* [PATCH 5.4 001/135] iommu/qcom: Fix bogus detach logic
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 002/135] ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Brian Masney, Naresh Kamboju,
Robin Murphy, Stephan Gerhold, Joerg Roedel
From: Robin Murphy <robin.murphy@arm.com>
commit faf305c51aeabd1ea2d7131e798ef5f55f4a7750 upstream.
Currently, the implementation of qcom_iommu_domain_free() is guaranteed
to do one of two things: WARN() and leak everything, or dereference NULL
and crash. That alone is terrible, but in fact the whole idea of trying
to track the liveness of a domain via the qcom_domain->iommu pointer as
a sanity check is full of fundamentally flawed assumptions. Make things
robust and actually functional by not trying to be quite so clever.
Reported-by: Brian Masney <masneyb@onstation.org>
Tested-by: Brian Masney <masneyb@onstation.org>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Fixes: 0ae349a0f33f ("iommu/qcom: Add qcom_iommu")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Stephan Gerhold <stephan@gerhold.net>
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iommu/qcom_iommu.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)
--- a/drivers/iommu/qcom_iommu.c
+++ b/drivers/iommu/qcom_iommu.c
@@ -345,21 +345,19 @@ static void qcom_iommu_domain_free(struc
{
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
- if (WARN_ON(qcom_domain->iommu)) /* forgot to detach? */
- return;
-
iommu_put_dma_cookie(domain);
- /* NOTE: unmap can be called after client device is powered off,
- * for example, with GPUs or anything involving dma-buf. So we
- * cannot rely on the device_link. Make sure the IOMMU is on to
- * avoid unclocked accesses in the TLB inv path:
- */
- pm_runtime_get_sync(qcom_domain->iommu->dev);
-
- free_io_pgtable_ops(qcom_domain->pgtbl_ops);
-
- pm_runtime_put_sync(qcom_domain->iommu->dev);
+ if (qcom_domain->iommu) {
+ /*
+ * NOTE: unmap can be called after client device is powered
+ * off, for example, with GPUs or anything involving dma-buf.
+ * So we cannot rely on the device_link. Make sure the IOMMU
+ * is on to avoid unclocked accesses in the TLB inv path:
+ */
+ pm_runtime_get_sync(qcom_domain->iommu->dev);
+ free_io_pgtable_ops(qcom_domain->pgtbl_ops);
+ pm_runtime_put_sync(qcom_domain->iommu->dev);
+ }
kfree(qcom_domain);
}
@@ -405,7 +403,7 @@ static void qcom_iommu_detach_dev(struct
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
unsigned i;
- if (!qcom_domain->iommu)
+ if (WARN_ON(!qcom_domain->iommu))
return;
pm_runtime_get_sync(qcom_iommu->dev);
@@ -418,8 +416,6 @@ static void qcom_iommu_detach_dev(struct
ctx->domain = NULL;
}
pm_runtime_put_sync(qcom_iommu->dev);
-
- qcom_domain->iommu = NULL;
}
static int qcom_iommu_map(struct iommu_domain *domain, unsigned long iova,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 002/135] ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 001/135] iommu/qcom: Fix bogus detach logic Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 003/135] ALSA: hda/realtek - Apply quirk for MSI GP63, too Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai
From: Takashi Iwai <tiwai@suse.de>
commit 44eeb081b8630bb3ad3cd381d1ae1831463e48bb upstream.
Some code in HD-audio driver calls snprintf() in a loop and still
expects that the return value were actually written size, while
snprintf() returns the expected would-be length instead. When the
given buffer limit were small, this leads to a buffer overflow.
Use scnprintf() for addressing those issues. It returns the actually
written size unlike snprintf().
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200218091409.27162-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/hda/hdmi_chmap.c | 2 +-
sound/pci/hda/hda_codec.c | 2 +-
sound/pci/hda/hda_eld.c | 2 +-
sound/pci/hda/hda_sysfs.c | 4 ++--
4 files changed, 5 insertions(+), 5 deletions(-)
--- a/sound/hda/hdmi_chmap.c
+++ b/sound/hda/hdmi_chmap.c
@@ -250,7 +250,7 @@ void snd_hdac_print_channel_allocation(i
for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) {
if (spk_alloc & (1 << i))
- j += snprintf(buf + j, buflen - j, " %s",
+ j += scnprintf(buf + j, buflen - j, " %s",
cea_speaker_allocation_names[i]);
}
buf[j] = '\0'; /* necessary when j == 0 */
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -4019,7 +4019,7 @@ void snd_print_pcm_bits(int pcm, char *b
for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++)
if (pcm & (AC_SUPPCM_BITS_8 << i))
- j += snprintf(buf + j, buflen - j, " %d", bits[i]);
+ j += scnprintf(buf + j, buflen - j, " %d", bits[i]);
buf[j] = '\0'; /* necessary when j == 0 */
}
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -360,7 +360,7 @@ static void hdmi_print_pcm_rates(int pcm
for (i = 0, j = 0; i < ARRAY_SIZE(alsa_rates); i++)
if (pcm & (1 << i))
- j += snprintf(buf + j, buflen - j, " %d",
+ j += scnprintf(buf + j, buflen - j, " %d",
alsa_rates[i]);
buf[j] = '\0'; /* necessary when j == 0 */
--- a/sound/pci/hda/hda_sysfs.c
+++ b/sound/pci/hda/hda_sysfs.c
@@ -222,7 +222,7 @@ static ssize_t init_verbs_show(struct de
int i, len = 0;
mutex_lock(&codec->user_mutex);
snd_array_for_each(&codec->init_verbs, i, v) {
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"0x%02x 0x%03x 0x%04x\n",
v->nid, v->verb, v->param);
}
@@ -272,7 +272,7 @@ static ssize_t hints_show(struct device
int i, len = 0;
mutex_lock(&codec->user_mutex);
snd_array_for_each(&codec->hints, i, hint) {
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"%s = %s\n", hint->key, hint->val);
}
mutex_unlock(&codec->user_mutex);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 003/135] ALSA: hda/realtek - Apply quirk for MSI GP63, too
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 001/135] iommu/qcom: Fix bogus detach logic Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 002/135] ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 004/135] ALSA: hda/realtek - Apply quirk for yet another MSI laptop Greg Kroah-Hartman
` (135 subsequent siblings)
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai
From: Takashi Iwai <tiwai@suse.de>
commit a655e2b107d463ce2745188ce050d07daed09a71 upstream.
The same quirk that was applied to MSI GL73 is needed for MSI GP63,
too. Adding the entry with the SSID 1462:1228.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=206503
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200217151947.17528-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/hda/patch_realtek.c | 1 +
1 file changed, 1 insertion(+)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2447,6 +2447,7 @@ static const struct snd_pci_quirk alc882
SND_PCI_QUIRK(0x1071, 0x8258, "Evesham Voyaeger", ALC882_FIXUP_EAPD),
SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte EP45-DS3/Z87X-UD3H", ALC889_FIXUP_FRONT_HP_NO_PRESENCE),
SND_PCI_QUIRK(0x1458, 0xa0b8, "Gigabyte AZ370-Gaming", ALC1220_FIXUP_GB_DUAL_CODECS),
+ SND_PCI_QUIRK(0x1462, 0x1228, "MSI-GP63", ALC1220_FIXUP_CLEVO_P950),
SND_PCI_QUIRK(0x1462, 0x1276, "MSI-GL73", ALC1220_FIXUP_CLEVO_P950),
SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
SND_PCI_QUIRK(0x1462, 0xda57, "MSI Z270-Gaming", ALC1220_FIXUP_GB_DUAL_CODECS),
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 004/135] ALSA: hda/realtek - Apply quirk for yet another MSI laptop
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (2 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 003/135] ALSA: hda/realtek - Apply quirk for MSI GP63, too Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 005/135] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Greg Kroah-Hartman
` (134 subsequent siblings)
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai
From: Takashi Iwai <tiwai@suse.de>
commit cc5049ae4d457194796f854eb2e38b9727ad8c2d upstream.
MSI GP65 laptop with SSID 1462:1293 requires the same quirk as other
MSI models.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204159
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200218080915.3433-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/hda/patch_realtek.c | 1 +
1 file changed, 1 insertion(+)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2449,6 +2449,7 @@ static const struct snd_pci_quirk alc882
SND_PCI_QUIRK(0x1458, 0xa0b8, "Gigabyte AZ370-Gaming", ALC1220_FIXUP_GB_DUAL_CODECS),
SND_PCI_QUIRK(0x1462, 0x1228, "MSI-GP63", ALC1220_FIXUP_CLEVO_P950),
SND_PCI_QUIRK(0x1462, 0x1276, "MSI-GL73", ALC1220_FIXUP_CLEVO_P950),
+ SND_PCI_QUIRK(0x1462, 0x1293, "MSI-GP65", ALC1220_FIXUP_CLEVO_P950),
SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
SND_PCI_QUIRK(0x1462, 0xda57, "MSI Z270-Gaming", ALC1220_FIXUP_GB_DUAL_CODECS),
SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 005/135] ASoC: codec2codec: avoid invalid/double-free of pcm runtime
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
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2020-02-27 13:35 ` [PATCH 5.4 004/135] ALSA: hda/realtek - Apply quirk for yet another MSI laptop Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 006/135] ASoC: sun8i-codec: Fix setting DAI data format Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Samuel Holland, Mark Brown
From: Samuel Holland <samuel@sholland.org>
commit b6570fdb96edf45bcf71884bd2644bd73d348d1a upstream.
The PCM runtime was freed during PMU in the case that the event hook
encountered an error. However, it is also unconditionally freed during
PMD. Avoid a double-free by dropping the call to kfree in the PMU hook.
Fixes: a72706ed8208 ("ASoC: codec2codec: remove ephemeral variables")
Cc: stable@vger.kernel.org
Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20200213061147.29386-2-samuel@sholland.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/soc-dapm.c | 3 ---
1 file changed, 3 deletions(-)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3888,9 +3888,6 @@ snd_soc_dai_link_event_pre_pmu(struct sn
runtime->rate = params_rate(params);
out:
- if (ret < 0)
- kfree(runtime);
-
kfree(params);
return ret;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 006/135] ASoC: sun8i-codec: Fix setting DAI data format
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (4 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 005/135] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 007/135] tpm: Initialize crypto_id of allocated_banks to HASH_ALGO__LAST Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Samuel Holland, Chen-Yu Tsai, stable,
Mark Brown
From: Samuel Holland <samuel@sholland.org>
commit 96781fd941b39e1f78098009344ebcd7af861c67 upstream.
Use the correct mask for this two-bit field. This fixes setting the DAI
data format to RIGHT_J or DSP_A.
Fixes: 36c684936fae ("ASoC: Add sun8i digital audio codec")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20200217064250.15516-7-samuel@sholland.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/sunxi/sun8i-codec.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/sound/soc/sunxi/sun8i-codec.c
+++ b/sound/soc/sunxi/sun8i-codec.c
@@ -80,6 +80,7 @@
#define SUN8I_SYS_SR_CTRL_AIF1_FS_MASK GENMASK(15, 12)
#define SUN8I_SYS_SR_CTRL_AIF2_FS_MASK GENMASK(11, 8)
+#define SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT_MASK GENMASK(3, 2)
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK GENMASK(5, 4)
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK GENMASK(8, 6)
#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV_MASK GENMASK(12, 9)
@@ -241,7 +242,7 @@ static int sun8i_set_fmt(struct snd_soc_
return -EINVAL;
}
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
- BIT(SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT),
+ SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT_MASK,
value << SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT);
return 0;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 007/135] tpm: Initialize crypto_id of allocated_banks to HASH_ALGO__LAST
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (5 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 006/135] ASoC: sun8i-codec: Fix setting DAI data format Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 008/135] ecryptfs: fix a memory leak bug in parse_tag_1_packet() Greg Kroah-Hartman
` (131 subsequent siblings)
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Roberto Sassu, Petr Vorel, Jarkko Sakkinen
From: Roberto Sassu <roberto.sassu@huawei.com>
commit dc10e4181c05a2315ddc375e963b7c763b5ee0df upstream.
chip->allocated_banks, an array of tpm_bank_info structures, contains the
list of TPM algorithm IDs of allocated PCR banks. It also contains the
corresponding ID of the crypto subsystem, so that users of the TPM driver
can calculate a digest for a PCR extend operation.
However, if there is no mapping between TPM algorithm ID and crypto ID, the
crypto_id field of tpm_bank_info remains set to zero (the array is
allocated and initialized with kcalloc() in tpm2_get_pcr_allocation()).
Zero should not be used as value for unknown mappings, as it is a valid
crypto ID (HASH_ALGO_MD4).
Thus, initialize crypto_id to HASH_ALGO__LAST.
Cc: stable@vger.kernel.org # 5.1.x
Fixes: 879b589210a9 ("tpm: retrieve digest size of unknown algorithms with PCR read")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/char/tpm/tpm2-cmd.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -831,6 +831,8 @@ static int tpm2_init_bank_info(struct tp
return 0;
}
+ bank->crypto_id = HASH_ALGO__LAST;
+
return tpm2_pcr_read(chip, 0, &digest, &bank->digest_size);
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 008/135] ecryptfs: fix a memory leak bug in parse_tag_1_packet()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (6 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 007/135] tpm: Initialize crypto_id of allocated_banks to HASH_ALGO__LAST Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 009/135] ecryptfs: fix a memory leak bug in ecryptfs_init_messaging() Greg Kroah-Hartman
` (130 subsequent siblings)
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Wenwen Wang, Tyler Hicks
From: Wenwen Wang <wenwen@cs.uga.edu>
commit fe2e082f5da5b4a0a92ae32978f81507ef37ec66 upstream.
In parse_tag_1_packet(), if tag 1 packet contains a key larger than
ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES, no cleanup is executed, leading to a
memory leak on the allocated 'auth_tok_list_item'. To fix this issue, go to
the label 'out_free' to perform the cleanup work.
Cc: stable@vger.kernel.org
Fixes: dddfa461fc89 ("[PATCH] eCryptfs: Public key; packet management")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ecryptfs/keystore.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1304,7 +1304,7 @@ parse_tag_1_packet(struct ecryptfs_crypt
printk(KERN_WARNING "Tag 1 packet contains key larger "
"than ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES\n");
rc = -EINVAL;
- goto out;
+ goto out_free;
}
memcpy((*new_auth_tok)->session_key.encrypted_key,
&data[(*packet_size)], (body_size - (ECRYPTFS_SIG_SIZE + 2)));
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 009/135] ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (7 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 008/135] ecryptfs: fix a memory leak bug in parse_tag_1_packet() Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 010/135] btrfs: handle logged extent failure properly Greg Kroah-Hartman
` (129 subsequent siblings)
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From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Wenwen Wang, Tyler Hicks
From: Wenwen Wang <wenwen@cs.uga.edu>
commit b4a81b87a4cfe2bb26a4a943b748d96a43ef20e8 upstream.
In ecryptfs_init_messaging(), if the allocation for 'ecryptfs_msg_ctx_arr'
fails, the previously allocated 'ecryptfs_daemon_hash' is not deallocated,
leading to a memory leak bug. To fix this issue, free
'ecryptfs_daemon_hash' before returning the error.
Cc: stable@vger.kernel.org
Fixes: 88b4a07e6610 ("[PATCH] eCryptfs: Public key transport mechanism")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ecryptfs/messaging.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -379,6 +379,7 @@ int __init ecryptfs_init_messaging(void)
* ecryptfs_message_buf_len),
GFP_KERNEL);
if (!ecryptfs_msg_ctx_arr) {
+ kfree(ecryptfs_daemon_hash);
rc = -ENOMEM;
goto out;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 010/135] btrfs: handle logged extent failure properly
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (8 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 009/135] ecryptfs: fix a memory leak bug in ecryptfs_init_messaging() Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 011/135] thunderbolt: Prevent crash if non-active NVMem file is read Greg Kroah-Hartman
` (128 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Johannes Thumshirn, Nikolay Borisov,
Qu Wenruo, Josef Bacik, David Sterba
From: Josef Bacik <josef@toxicpanda.com>
commit bd727173e4432fe6cb70ba108dc1f3602c5409d7 upstream.
If we're allocating a logged extent we attempt to insert an extent
record for the file extent directly. We increase
space_info->bytes_reserved, because the extent entry addition will call
btrfs_update_block_group(), which will convert the ->bytes_reserved to
->bytes_used. However if we fail at any point while inserting the
extent entry we will bail and leave space on ->bytes_reserved, which
will trigger a WARN_ON() on umount. Fix this by pinning the space if we
fail to insert, which is what happens in every other failure case that
involves adding the extent entry.
CC: stable@vger.kernel.org # 5.4+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/extent-tree.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4411,6 +4411,8 @@ int btrfs_alloc_logged_file_extent(struc
ret = alloc_reserved_file_extent(trans, 0, root_objectid, 0, owner,
offset, ins, 1);
+ if (ret)
+ btrfs_pin_extent(fs_info, ins->objectid, ins->offset, 1);
btrfs_put_block_group(block_group);
return ret;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 011/135] thunderbolt: Prevent crash if non-active NVMem file is read
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (9 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 010/135] btrfs: handle logged extent failure properly Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 012/135] USB: misc: iowarrior: add support for 2 OEMed devices Greg Kroah-Hartman
` (127 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Nicholas Johnson, Mika Westerberg
From: Mika Westerberg <mika.westerberg@linux.intel.com>
commit 03cd45d2e219301880cabc357e3cf478a500080f upstream.
The driver does not populate .reg_read callback for the non-active NVMem
because the file is supposed to be write-only. However, it turns out
NVMem subsystem does not yet support this and expects that the .reg_read
callback is provided. If user reads the binary attribute it triggers
NULL pointer dereference like this one:
BUG: kernel NULL pointer dereference, address: 0000000000000000
...
Call Trace:
bin_attr_nvmem_read+0x64/0x80
kernfs_fop_read+0xa7/0x180
vfs_read+0xbd/0x170
ksys_read+0x5a/0xd0
do_syscall_64+0x43/0x150
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fix this in the driver by providing .reg_read callback that always
returns an error.
Reported-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
Fixes: e6b245ccd524 ("thunderbolt: Add support for host and device NVM firmware upgrade")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200213095604.1074-1-mika.westerberg@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/thunderbolt/switch.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -274,6 +274,12 @@ out:
return ret;
}
+static int tb_switch_nvm_no_read(void *priv, unsigned int offset, void *val,
+ size_t bytes)
+{
+ return -EPERM;
+}
+
static int tb_switch_nvm_write(void *priv, unsigned int offset, void *val,
size_t bytes)
{
@@ -319,6 +325,7 @@ static struct nvmem_device *register_nvm
config.read_only = true;
} else {
config.name = "nvm_non_active";
+ config.reg_read = tb_switch_nvm_no_read;
config.reg_write = tb_switch_nvm_write;
config.root_only = true;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 012/135] USB: misc: iowarrior: add support for 2 OEMed devices
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (10 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 011/135] thunderbolt: Prevent crash if non-active NVMem file is read Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 013/135] USB: misc: iowarrior: add support for the 28 and 28L devices Greg Kroah-Hartman
` (126 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Christoph Jung
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 461d8deb26a7d70254bc0391feb4fd8a95e674e8 upstream.
Add support for two OEM devices that are identical to existing
IO-Warrior devices, except for the USB device id.
Cc: Christoph Jung <jung@codemercs.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200212040422.2991-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/misc/iowarrior.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -34,6 +34,10 @@
/* full speed iowarrior */
#define USB_DEVICE_ID_CODEMERCS_IOW56 0x1503
+/* OEMed devices */
+#define USB_DEVICE_ID_CODEMERCS_IOW24SAG 0x158a
+#define USB_DEVICE_ID_CODEMERCS_IOW56AM 0x158b
+
/* Get a minor range for your devices from the usb maintainer */
#ifdef CONFIG_USB_DYNAMIC_MINORS
#define IOWARRIOR_MINOR_BASE 0
@@ -133,6 +137,8 @@ static const struct usb_device_id iowarr
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOWPV1)},
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOWPV2)},
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW56)},
+ {USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24SAG)},
+ {USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW56AM)},
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, iowarrior_ids);
@@ -357,6 +363,7 @@ static ssize_t iowarrior_write(struct fi
}
switch (dev->product_id) {
case USB_DEVICE_ID_CODEMERCS_IOW24:
+ case USB_DEVICE_ID_CODEMERCS_IOW24SAG:
case USB_DEVICE_ID_CODEMERCS_IOWPV1:
case USB_DEVICE_ID_CODEMERCS_IOWPV2:
case USB_DEVICE_ID_CODEMERCS_IOW40:
@@ -371,6 +378,7 @@ static ssize_t iowarrior_write(struct fi
goto exit;
break;
case USB_DEVICE_ID_CODEMERCS_IOW56:
+ case USB_DEVICE_ID_CODEMERCS_IOW56AM:
/* The IOW56 uses asynchronous IO and more urbs */
if (atomic_read(&dev->write_busy) == MAX_WRITES_IN_FLIGHT) {
/* Wait until we are below the limit for submitted urbs */
@@ -493,6 +501,7 @@ static long iowarrior_ioctl(struct file
switch (cmd) {
case IOW_WRITE:
if (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW24 ||
+ dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW24SAG ||
dev->product_id == USB_DEVICE_ID_CODEMERCS_IOWPV1 ||
dev->product_id == USB_DEVICE_ID_CODEMERCS_IOWPV2 ||
dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW40) {
@@ -767,7 +776,8 @@ static int iowarrior_probe(struct usb_in
goto error;
}
- if (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) {
+ if ((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM)) {
res = usb_find_last_int_out_endpoint(iface_desc,
&dev->int_out_endpoint);
if (res) {
@@ -780,7 +790,8 @@ static int iowarrior_probe(struct usb_in
/* we have to check the report_size often, so remember it in the endianness suitable for our machine */
dev->report_size = usb_endpoint_maxp(dev->int_in_endpoint);
if ((dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) &&
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56))
+ ((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM)))
/* IOWarrior56 has wMaxPacketSize different from report size */
dev->report_size = 7;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 013/135] USB: misc: iowarrior: add support for the 28 and 28L devices
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (11 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 012/135] USB: misc: iowarrior: add support for 2 OEMed devices Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 014/135] USB: misc: iowarrior: add support for the 100 device Greg Kroah-Hartman
` (125 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Christoph Jung
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5f6f8da2d7b5a431d3f391d0d73ace8edfb42af7 upstream.
Add new device ids for the 28 and 28L devices. These have 4 interfaces
instead of 2, but the driver binds the same, so the driver changes are
minimal.
Cc: Christoph Jung <jung@codemercs.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200212040422.2991-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/misc/iowarrior.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -33,6 +33,9 @@
#define USB_DEVICE_ID_CODEMERCS_IOWPV2 0x1512
/* full speed iowarrior */
#define USB_DEVICE_ID_CODEMERCS_IOW56 0x1503
+/* fuller speed iowarrior */
+#define USB_DEVICE_ID_CODEMERCS_IOW28 0x1504
+#define USB_DEVICE_ID_CODEMERCS_IOW28L 0x1505
/* OEMed devices */
#define USB_DEVICE_ID_CODEMERCS_IOW24SAG 0x158a
@@ -139,6 +142,8 @@ static const struct usb_device_id iowarr
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW56)},
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24SAG)},
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW56AM)},
+ {USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28)},
+ {USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28L)},
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, iowarrior_ids);
@@ -379,6 +384,8 @@ static ssize_t iowarrior_write(struct fi
break;
case USB_DEVICE_ID_CODEMERCS_IOW56:
case USB_DEVICE_ID_CODEMERCS_IOW56AM:
+ case USB_DEVICE_ID_CODEMERCS_IOW28:
+ case USB_DEVICE_ID_CODEMERCS_IOW28L:
/* The IOW56 uses asynchronous IO and more urbs */
if (atomic_read(&dev->write_busy) == MAX_WRITES_IN_FLIGHT) {
/* Wait until we are below the limit for submitted urbs */
@@ -777,7 +784,9 @@ static int iowarrior_probe(struct usb_in
}
if ((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM)) {
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L)) {
res = usb_find_last_int_out_endpoint(iface_desc,
&dev->int_out_endpoint);
if (res) {
@@ -791,7 +800,9 @@ static int iowarrior_probe(struct usb_in
dev->report_size = usb_endpoint_maxp(dev->int_in_endpoint);
if ((dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) &&
((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM)))
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L)))
/* IOWarrior56 has wMaxPacketSize different from report size */
dev->report_size = 7;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 014/135] USB: misc: iowarrior: add support for the 100 device
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (12 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 013/135] USB: misc: iowarrior: add support for the 28 and 28L devices Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 015/135] e1000e: Use rtnl_lock to prevent race conditions between net and pci/pm Greg Kroah-Hartman
` (124 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Christoph Jung
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bab5417f5f0118ce914bc5b2f8381e959e891155 upstream.
Add a new device id for the 100 devie. It has 4 interfaces like the 28
and 28L devices but a larger endpoint so more I/O pins.
Cc: Christoph Jung <jung@codemercs.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200214161148.GA3963518@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/misc/iowarrior.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -36,6 +36,7 @@
/* fuller speed iowarrior */
#define USB_DEVICE_ID_CODEMERCS_IOW28 0x1504
#define USB_DEVICE_ID_CODEMERCS_IOW28L 0x1505
+#define USB_DEVICE_ID_CODEMERCS_IOW100 0x1506
/* OEMed devices */
#define USB_DEVICE_ID_CODEMERCS_IOW24SAG 0x158a
@@ -144,6 +145,7 @@ static const struct usb_device_id iowarr
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW56AM)},
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28)},
{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28L)},
+ {USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW100)},
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, iowarrior_ids);
@@ -386,6 +388,7 @@ static ssize_t iowarrior_write(struct fi
case USB_DEVICE_ID_CODEMERCS_IOW56AM:
case USB_DEVICE_ID_CODEMERCS_IOW28:
case USB_DEVICE_ID_CODEMERCS_IOW28L:
+ case USB_DEVICE_ID_CODEMERCS_IOW100:
/* The IOW56 uses asynchronous IO and more urbs */
if (atomic_read(&dev->write_busy) == MAX_WRITES_IN_FLIGHT) {
/* Wait until we are below the limit for submitted urbs */
@@ -786,7 +789,8 @@ static int iowarrior_probe(struct usb_in
if ((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
(dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM) ||
(dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L)) {
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW100)) {
res = usb_find_last_int_out_endpoint(iface_desc,
&dev->int_out_endpoint);
if (res) {
@@ -802,7 +806,8 @@ static int iowarrior_probe(struct usb_in
((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
(dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM) ||
(dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L)))
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L) ||
+ (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW100)))
/* IOWarrior56 has wMaxPacketSize different from report size */
dev->report_size = 7;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 015/135] e1000e: Use rtnl_lock to prevent race conditions between net and pci/pm
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (13 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 014/135] USB: misc: iowarrior: add support for the 100 device Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 016/135] floppy: check FDC index for errors before assigning it Greg Kroah-Hartman
` (123 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Morumuri Srivalli, Alexander Duyck,
David Dai, Aaron Brown, Kai-Heng Feng
From: Alexander Duyck <alexander.h.duyck@linux.intel.com>
commit a7023819404ac9bd2bb311a4fafd38515cfa71ec upstream.
This patch is meant to address possible race conditions that can exist
between network configuration and power management. A similar issue was
fixed for igb in commit 9474933caf21 ("igb: close/suspend race in
netif_device_detach").
In addition it consolidates the code so that the PCI error handling code
will essentially perform the power management freeze on the device prior to
attempting a reset, and will thaw the device afterwards if that is what it
is planning to do. Otherwise when we call close on the interface it should
see it is detached and not attempt to call the logic to down the interface
and free the IRQs again.
>From what I can tell the check that was adding the check for __E1000_DOWN
in e1000e_close was added when runtime power management was added. However
it should not be relevant for us as we perform a call to
pm_runtime_get_sync before we call e1000_down/free_irq so it should always
be back up before we call into this anyway.
Reported-by: Morumuri Srivalli <smorumu1@in.ibm.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Tested-by: David Dai <zdai@linux.vnet.ibm.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/e1000e/netdev.c | 68 ++++++++++++++---------------
1 file changed, 35 insertions(+), 33 deletions(-)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4713,12 +4713,12 @@ int e1000e_close(struct net_device *netd
pm_runtime_get_sync(&pdev->dev);
- if (!test_bit(__E1000_DOWN, &adapter->state)) {
+ if (netif_device_present(netdev)) {
e1000e_down(adapter, true);
e1000_free_irq(adapter);
/* Link status message must follow this format */
- pr_info("%s NIC Link is Down\n", adapter->netdev->name);
+ pr_info("%s NIC Link is Down\n", netdev->name);
}
napi_disable(&adapter->napi);
@@ -6309,10 +6309,14 @@ static int e1000e_pm_freeze(struct devic
{
struct net_device *netdev = dev_get_drvdata(dev);
struct e1000_adapter *adapter = netdev_priv(netdev);
+ bool present;
+ rtnl_lock();
+
+ present = netif_device_present(netdev);
netif_device_detach(netdev);
- if (netif_running(netdev)) {
+ if (present && netif_running(netdev)) {
int count = E1000_CHECK_RESET_COUNT;
while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
@@ -6324,6 +6328,8 @@ static int e1000e_pm_freeze(struct devic
e1000e_down(adapter, false);
e1000_free_irq(adapter);
}
+ rtnl_unlock();
+
e1000e_reset_interrupt_capability(adapter);
/* Allow time for pending master requests to run */
@@ -6571,6 +6577,30 @@ static void e1000e_disable_aspm_locked(s
__e1000e_disable_aspm(pdev, state, 1);
}
+static int e1000e_pm_thaw(struct device *dev)
+{
+ struct net_device *netdev = dev_get_drvdata(dev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ int rc = 0;
+
+ e1000e_set_interrupt_capability(adapter);
+
+ rtnl_lock();
+ if (netif_running(netdev)) {
+ rc = e1000_request_irq(adapter);
+ if (rc)
+ goto err_irq;
+
+ e1000e_up(adapter);
+ }
+
+ netif_device_attach(netdev);
+err_irq:
+ rtnl_unlock();
+
+ return rc;
+}
+
#ifdef CONFIG_PM
static int __e1000_resume(struct pci_dev *pdev)
{
@@ -6638,26 +6668,6 @@ static int __e1000_resume(struct pci_dev
}
#ifdef CONFIG_PM_SLEEP
-static int e1000e_pm_thaw(struct device *dev)
-{
- struct net_device *netdev = dev_get_drvdata(dev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- e1000e_set_interrupt_capability(adapter);
- if (netif_running(netdev)) {
- u32 err = e1000_request_irq(adapter);
-
- if (err)
- return err;
-
- e1000e_up(adapter);
- }
-
- netif_device_attach(netdev);
-
- return 0;
-}
-
static int e1000e_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
@@ -6829,16 +6839,11 @@ static void e1000_netpoll(struct net_dev
static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- netif_device_detach(netdev);
+ e1000e_pm_freeze(&pdev->dev);
if (state == pci_channel_io_perm_failure)
return PCI_ERS_RESULT_DISCONNECT;
- if (netif_running(netdev))
- e1000e_down(adapter, true);
pci_disable_device(pdev);
/* Request a slot slot reset. */
@@ -6904,10 +6909,7 @@ static void e1000_io_resume(struct pci_d
e1000_init_manageability_pt(adapter);
- if (netif_running(netdev))
- e1000e_up(adapter);
-
- netif_device_attach(netdev);
+ e1000e_pm_thaw(&pdev->dev);
/* If the controller has AMT, do not set DRV_LOAD until the interface
* is up. For all other cases, let the f/w know that the h/w is now
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 016/135] floppy: check FDC index for errors before assigning it
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (14 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 015/135] e1000e: Use rtnl_lock to prevent race conditions between net and pci/pm Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 017/135] vt: fix scrollback flushing on background consoles Greg Kroah-Hartman
` (122 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Jordy Zomer, Willy Tarreau,
Dan Carpenter, Linus Torvalds
From: Linus Torvalds <torvalds@linux-foundation.org>
commit 2e90ca68b0d2f5548804f22f0dd61145516171e3 upstream.
Jordy Zomer reported a KASAN out-of-bounds read in the floppy driver in
wait_til_ready().
Which on the face of it can't happen, since as Willy Tarreau points out,
the function does no particular memory access. Except through the FDCS
macro, which just indexes a static allocation through teh current fdc,
which is always checked against N_FDC.
Except the checking happens after we've already assigned the value.
The floppy driver is a disgrace (a lot of it going back to my original
horrd "design"), and has no real maintainer. Nobody has the hardware,
and nobody really cares. But it still gets used in virtual environment
because it's one of those things that everybody supports.
The whole thing should be re-written, or at least parts of it should be
seriously cleaned up. The 'current fdc' index, which is used by the
FDCS macro, and which is often shadowed by a local 'fdc' variable, is a
prime example of how not to write code.
But because nobody has the hardware or the motivation, let's just fix up
the immediate problem with a nasty band-aid: test the fdc index before
actually assigning it to the static 'fdc' variable.
Reported-by: Jordy Zomer <jordy@simplyhacker.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/block/floppy.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -853,14 +853,17 @@ static void reset_fdc_info(int mode)
/* selects the fdc and drive, and enables the fdc's input/dma. */
static void set_fdc(int drive)
{
+ unsigned int new_fdc = fdc;
+
if (drive >= 0 && drive < N_DRIVE) {
- fdc = FDC(drive);
+ new_fdc = FDC(drive);
current_drive = drive;
}
- if (fdc != 1 && fdc != 0) {
+ if (new_fdc >= N_FDC) {
pr_info("bad fdc value\n");
return;
}
+ fdc = new_fdc;
set_dor(fdc, ~0, 8);
#if N_FDC > 1
set_dor(1 - fdc, ~8, 0);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 017/135] vt: fix scrollback flushing on background consoles
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (15 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 016/135] floppy: check FDC index for errors before assigning it Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 018/135] vt: selection, handle pending signals in paste_selection Greg Kroah-Hartman
` (121 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Nicolas Pitre, Lukas Wunner
From: Nicolas Pitre <nico@fluxnic.net>
commit 3f4ef485be9d54040b695f32ec76d0f1ea50bbf3 upstream.
Commit a6dbe4427559 ("vt: perform safe console erase in the right
order") provided fixes to an earlier commit by gathering all console
scrollback flushing operations in a function of its own. This includes
the invocation of vc_sw->con_switch() as previously done through a
update_screen() call. That commit failed to carry over the
con_is_visible() conditional though, as well as cursor handling, which
caused problems when "\e[3J" was written to a background console.
One could argue for preserving the call to update_screen(). However
this does far more than we need, and it is best to remove scrollback
assumptions from it. Instead let's gather the minimum needed to actually
perform scrollback flushing properly in that one place.
While at it, let's document the vc_sw->con_switch() side effect being
relied upon.
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Reported-and-tested-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/nycvar.YSQ.7.76.2001281205560.1655@knanqh.ubzr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/vt/vt.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -936,10 +936,21 @@ static void flush_scrollback(struct vc_d
WARN_CONSOLE_UNLOCKED();
set_origin(vc);
- if (vc->vc_sw->con_flush_scrollback)
+ if (vc->vc_sw->con_flush_scrollback) {
vc->vc_sw->con_flush_scrollback(vc);
- else
+ } else if (con_is_visible(vc)) {
+ /*
+ * When no con_flush_scrollback method is provided then the
+ * legacy way for flushing the scrollback buffer is to use
+ * a side effect of the con_switch method. We do it only on
+ * the foreground console as background consoles have no
+ * scrollback buffers in that case and we obviously don't
+ * want to switch to them.
+ */
+ hide_cursor(vc);
vc->vc_sw->con_switch(vc);
+ set_cursor(vc);
+ }
}
/*
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 018/135] vt: selection, handle pending signals in paste_selection
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (16 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 017/135] vt: fix scrollback flushing on background consoles Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:35 ` [PATCH 5.4 019/135] vt: selection, close sel_buffer race Greg Kroah-Hartman
` (120 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Jiri Slaby
From: Jiri Slaby <jslaby@suse.cz>
commit 687bff0cd08f790d540cfb7b2349f0d876cdddec upstream.
When pasting a selection to a vt, the task is set as INTERRUPTIBLE while
waiting for a tty to unthrottle. But signals are not handled at all.
Normally, this is not a problem as tty_ldisc_receive_buf receives all
the goods and a user has no reason to interrupt the task.
There are two scenarios where this matters:
1) when the tty is throttled and a signal is sent to the process, it
spins on a CPU until the tty is unthrottled. schedule() does not
really echedule, but returns immediately, of course.
2) when the sel_buffer becomes invalid, KASAN prevents any reads from it
and the loop simply does not proceed and spins forever (causing the
tty to throttle, but the code never sleeps, the same as above). This
sometimes happens as there is a race in the sel_buffer handling code.
So add signal handling to this ioctl (TIOCL_PASTESEL) and return -EINTR
in case a signal is pending.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210081131.23572-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/vt/selection.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/tty/vt/selection.c
+++ b/drivers/tty/vt/selection.c
@@ -29,6 +29,8 @@
#include <linux/console.h>
#include <linux/tty_flip.h>
+#include <linux/sched/signal.h>
+
/* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */
#define isspace(c) ((c) == ' ')
@@ -350,6 +352,7 @@ int paste_selection(struct tty_struct *t
unsigned int count;
struct tty_ldisc *ld;
DECLARE_WAITQUEUE(wait, current);
+ int ret = 0;
console_lock();
poke_blanked_console();
@@ -363,6 +366,10 @@ int paste_selection(struct tty_struct *t
add_wait_queue(&vc->paste_wait, &wait);
while (sel_buffer && sel_buffer_lth > pasted) {
set_current_state(TASK_INTERRUPTIBLE);
+ if (signal_pending(current)) {
+ ret = -EINTR;
+ break;
+ }
if (tty_throttled(tty)) {
schedule();
continue;
@@ -378,6 +385,6 @@ int paste_selection(struct tty_struct *t
tty_buffer_unlock_exclusive(&vc->port);
tty_ldisc_deref(ld);
- return 0;
+ return ret;
}
EXPORT_SYMBOL_GPL(paste_selection);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 019/135] vt: selection, close sel_buffer race
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (17 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 018/135] vt: selection, handle pending signals in paste_selection Greg Kroah-Hartman
@ 2020-02-27 13:35 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 020/135] vt: vt_ioctl: fix race in VT_RESIZEX Greg Kroah-Hartman
` (119 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:35 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Jiri Slaby, syzbot+59997e8d5cbdc486e6f6
From: Jiri Slaby <jslaby@suse.cz>
commit 07e6124a1a46b4b5a9b3cacc0c306b50da87abf5 upstream.
syzkaller reported this UAF:
BUG: KASAN: use-after-free in n_tty_receive_buf_common+0x2481/0x2940 drivers/tty/n_tty.c:1741
Read of size 1 at addr ffff8880089e40e9 by task syz-executor.1/13184
CPU: 0 PID: 13184 Comm: syz-executor.1 Not tainted 5.4.7 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
...
kasan_report+0xe/0x20 mm/kasan/common.c:634
n_tty_receive_buf_common+0x2481/0x2940 drivers/tty/n_tty.c:1741
tty_ldisc_receive_buf+0xac/0x190 drivers/tty/tty_buffer.c:461
paste_selection+0x297/0x400 drivers/tty/vt/selection.c:372
tioclinux+0x20d/0x4e0 drivers/tty/vt/vt.c:3044
vt_ioctl+0x1bcf/0x28d0 drivers/tty/vt/vt_ioctl.c:364
tty_ioctl+0x525/0x15a0 drivers/tty/tty_io.c:2657
vfs_ioctl fs/ioctl.c:47 [inline]
It is due to a race between parallel paste_selection (TIOCL_PASTESEL)
and set_selection_user (TIOCL_SETSEL) invocations. One uses sel_buffer,
while the other frees it and reallocates a new one for another
selection. Add a mutex to close this race.
The mutex takes care properly of sel_buffer and sel_buffer_lth only. The
other selection global variables (like sel_start, sel_end, and sel_cons)
are protected only in set_selection_user. The other functions need quite
some more work to close the races of the variables there. This is going
to happen later.
This likely fixes (I am unsure as there is no reproducer provided) bug
206361 too. It was marked as CVE-2020-8648.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: syzbot+59997e8d5cbdc486e6f6@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210081131.23572-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/vt/selection.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
--- a/drivers/tty/vt/selection.c
+++ b/drivers/tty/vt/selection.c
@@ -16,6 +16,7 @@
#include <linux/tty.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/types.h>
@@ -45,6 +46,7 @@ static volatile int sel_start = -1; /*
static int sel_end;
static int sel_buffer_lth;
static char *sel_buffer;
+static DEFINE_MUTEX(sel_lock);
/* clear_selection, highlight and highlight_pointer can be called
from interrupt (via scrollback/front) */
@@ -186,7 +188,7 @@ int set_selection_kernel(struct tiocl_se
char *bp, *obp;
int i, ps, pe, multiplier;
u32 c;
- int mode;
+ int mode, ret = 0;
poke_blanked_console();
@@ -212,6 +214,7 @@ int set_selection_kernel(struct tiocl_se
if (ps > pe) /* make sel_start <= sel_end */
swap(ps, pe);
+ mutex_lock(&sel_lock);
if (sel_cons != vc_cons[fg_console].d) {
clear_selection();
sel_cons = vc_cons[fg_console].d;
@@ -257,9 +260,10 @@ int set_selection_kernel(struct tiocl_se
break;
case TIOCL_SELPOINTER:
highlight_pointer(pe);
- return 0;
+ goto unlock;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
/* remove the pointer */
@@ -281,7 +285,7 @@ int set_selection_kernel(struct tiocl_se
else if (new_sel_start == sel_start)
{
if (new_sel_end == sel_end) /* no action required */
- return 0;
+ goto unlock;
else if (new_sel_end > sel_end) /* extend to right */
highlight(sel_end + 2, new_sel_end);
else /* contract from right */
@@ -309,7 +313,8 @@ int set_selection_kernel(struct tiocl_se
if (!bp) {
printk(KERN_WARNING "selection: kmalloc() failed\n");
clear_selection();
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto unlock;
}
kfree(sel_buffer);
sel_buffer = bp;
@@ -334,7 +339,9 @@ int set_selection_kernel(struct tiocl_se
}
}
sel_buffer_lth = bp - sel_buffer;
- return 0;
+unlock:
+ mutex_unlock(&sel_lock);
+ return ret;
}
EXPORT_SYMBOL_GPL(set_selection_kernel);
@@ -364,6 +371,7 @@ int paste_selection(struct tty_struct *t
tty_buffer_lock_exclusive(&vc->port);
add_wait_queue(&vc->paste_wait, &wait);
+ mutex_lock(&sel_lock);
while (sel_buffer && sel_buffer_lth > pasted) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current)) {
@@ -371,7 +379,9 @@ int paste_selection(struct tty_struct *t
break;
}
if (tty_throttled(tty)) {
+ mutex_unlock(&sel_lock);
schedule();
+ mutex_lock(&sel_lock);
continue;
}
__set_current_state(TASK_RUNNING);
@@ -380,6 +390,7 @@ int paste_selection(struct tty_struct *t
count);
pasted += count;
}
+ mutex_unlock(&sel_lock);
remove_wait_queue(&vc->paste_wait, &wait);
__set_current_state(TASK_RUNNING);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 020/135] vt: vt_ioctl: fix race in VT_RESIZEX
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (18 preceding siblings ...)
2020-02-27 13:35 ` [PATCH 5.4 019/135] vt: selection, close sel_buffer race Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 021/135] staging: android: ashmem: Disallow ashmem memory from being remapped Greg Kroah-Hartman
` (118 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Eric Dumazet, syzbot
From: Eric Dumazet <edumazet@google.com>
commit 6cd1ed50efd88261298577cd92a14f2768eddeeb upstream.
We need to make sure vc_cons[i].d is not NULL after grabbing
console_lock(), or risk a crash.
general protection fault, probably for non-canonical address 0xdffffc0000000068: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000340-0x0000000000000347]
CPU: 1 PID: 19462 Comm: syz-executor.5 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vt_ioctl+0x1f96/0x26d0 drivers/tty/vt/vt_ioctl.c:883
Code: 74 41 e8 bd a6 84 fd 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 e4 04 00 00 48 8b 03 48 8d b8 40 03 00 00 48 89 fa 48 c1 ea 03 <42> 0f b6 14 2a 84 d2 74 09 80 fa 03 0f 8e b1 05 00 00 44 89 b8 40
RSP: 0018:ffffc900086d7bb0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffffff8c34ee88 RCX: ffffc9001415c000
RDX: 0000000000000068 RSI: ffffffff83f0e6e3 RDI: 0000000000000340
RBP: ffffc900086d7cd0 R08: ffff888054ce0100 R09: fffffbfff16a2f6d
R10: ffff888054ce0998 R11: ffff888054ce0100 R12: 000000000000001d
R13: dffffc0000000000 R14: 1ffff920010daf79 R15: 000000000000ff7f
FS: 00007f7d13c12700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd477e3c38 CR3: 0000000095d0a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tty_ioctl+0xa37/0x14f0 drivers/tty/tty_io.c:2660
vfs_ioctl fs/ioctl.c:47 [inline]
ksys_ioctl+0x123/0x180 fs/ioctl.c:763
__do_sys_ioctl fs/ioctl.c:772 [inline]
__se_sys_ioctl fs/ioctl.c:770 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:770
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b399
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7d13c11c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7d13c126d4 RCX: 000000000045b399
RDX: 0000000020000080 RSI: 000000000000560a RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000666 R14: 00000000004c7f04 R15: 000000000075bf2c
Modules linked in:
---[ end trace 80970faf7a67eb77 ]---
RIP: 0010:vt_ioctl+0x1f96/0x26d0 drivers/tty/vt/vt_ioctl.c:883
Code: 74 41 e8 bd a6 84 fd 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 e4 04 00 00 48 8b 03 48 8d b8 40 03 00 00 48 89 fa 48 c1 ea 03 <42> 0f b6 14 2a 84 d2 74 09 80 fa 03 0f 8e b1 05 00 00 44 89 b8 40
RSP: 0018:ffffc900086d7bb0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffffff8c34ee88 RCX: ffffc9001415c000
RDX: 0000000000000068 RSI: ffffffff83f0e6e3 RDI: 0000000000000340
RBP: ffffc900086d7cd0 R08: ffff888054ce0100 R09: fffffbfff16a2f6d
R10: ffff888054ce0998 R11: ffff888054ce0100 R12: 000000000000001d
R13: dffffc0000000000 R14: 1ffff920010daf79 R15: 000000000000ff7f
FS: 00007f7d13c12700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd477e3c38 CR3: 0000000095d0a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: stable <stable@vger.kernel.org>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20200210190721.200418-1-edumazet@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/vt/vt_ioctl.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -876,15 +876,20 @@ int vt_ioctl(struct tty_struct *tty,
return -EINVAL;
for (i = 0; i < MAX_NR_CONSOLES; i++) {
+ struct vc_data *vcp;
+
if (!vc_cons[i].d)
continue;
console_lock();
- if (v.v_vlin)
- vc_cons[i].d->vc_scan_lines = v.v_vlin;
- if (v.v_clin)
- vc_cons[i].d->vc_font.height = v.v_clin;
- vc_cons[i].d->vc_resize_user = 1;
- vc_resize(vc_cons[i].d, v.v_cols, v.v_rows);
+ vcp = vc_cons[i].d;
+ if (vcp) {
+ if (v.v_vlin)
+ vcp->vc_scan_lines = v.v_vlin;
+ if (v.v_clin)
+ vcp->vc_font.height = v.v_clin;
+ vcp->vc_resize_user = 1;
+ vc_resize(vcp, v.v_cols, v.v_rows);
+ }
console_unlock();
}
break;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 021/135] staging: android: ashmem: Disallow ashmem memory from being remapped
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (19 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 020/135] vt: vt_ioctl: fix race in VT_RESIZEX Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 022/135] staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi Greg Kroah-Hartman
` (117 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Jann Horn, Suren Baghdasaryan,
Todd Kjos, Joel Fernandes (Google)
From: Suren Baghdasaryan <surenb@google.com>
commit 6d67b0290b4b84c477e6a2fc6e005e174d3c7786 upstream.
When ashmem file is mmapped, the resulting vma->vm_file points to the
backing shmem file with the generic fops that do not check ashmem
permissions like fops of ashmem do. If an mremap is done on the ashmem
region, then the permission checks will be skipped. Fix that by disallowing
mapping operation on the backing shmem file.
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: stable <stable@vger.kernel.org> # 4.4,4.9,4.14,4.18,5.4
Signed-off-by: Todd Kjos <tkjos@google.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20200127235616.48920-1-tkjos@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/android/ashmem.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
--- a/drivers/staging/android/ashmem.c
+++ b/drivers/staging/android/ashmem.c
@@ -351,8 +351,23 @@ static inline vm_flags_t calc_vm_may_fla
_calc_vm_trans(prot, PROT_EXEC, VM_MAYEXEC);
}
+static int ashmem_vmfile_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ /* do not allow to mmap ashmem backing shmem file directly */
+ return -EPERM;
+}
+
+static unsigned long
+ashmem_vmfile_get_unmapped_area(struct file *file, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags)
+{
+ return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
+}
+
static int ashmem_mmap(struct file *file, struct vm_area_struct *vma)
{
+ static struct file_operations vmfile_fops;
struct ashmem_area *asma = file->private_data;
int ret = 0;
@@ -393,6 +408,19 @@ static int ashmem_mmap(struct file *file
}
vmfile->f_mode |= FMODE_LSEEK;
asma->file = vmfile;
+ /*
+ * override mmap operation of the vmfile so that it can't be
+ * remapped which would lead to creation of a new vma with no
+ * asma permission checks. Have to override get_unmapped_area
+ * as well to prevent VM_BUG_ON check for f_ops modification.
+ */
+ if (!vmfile_fops.mmap) {
+ vmfile_fops = *vmfile->f_op;
+ vmfile_fops.mmap = ashmem_vmfile_mmap;
+ vmfile_fops.get_unmapped_area =
+ ashmem_vmfile_get_unmapped_area;
+ }
+ vmfile->f_op = &vmfile_fops;
}
get_file(asma->file);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 022/135] staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi.
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (20 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 021/135] staging: android: ashmem: Disallow ashmem memory from being remapped Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 023/135] xhci: Force Maximum Packet size for Full-speed bulk devices to valid range Greg Kroah-Hartman
` (116 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Malcolm Priestley
From: Malcolm Priestley <tvboxspy@gmail.com>
commit 93134df520f23f4e9998c425b8987edca7016817 upstream.
bb_pre_ed_rssi is an u8 rx_dm always returns negative signed
values add minus operator to always yield positive.
fixes issue where rx sensitivity is always set to maximum because
the unsigned numbers were always greater then 100.
Fixes: 63b9907f58f1 ("staging: vt6656: mac80211 conversion: create rx function.")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/aceac98c-6e69-3ce1-dfec-2bf27b980221@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/vt6656/dpc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/vt6656/dpc.c
+++ b/drivers/staging/vt6656/dpc.c
@@ -130,7 +130,7 @@ int vnt_rx_data(struct vnt_private *priv
vnt_rf_rssi_to_dbm(priv, *rssi, &rx_dbm);
- priv->bb_pre_ed_rssi = (u8)rx_dbm + 1;
+ priv->bb_pre_ed_rssi = (u8)-rx_dbm + 1;
priv->current_rssi = priv->bb_pre_ed_rssi;
skb_pull(skb, 8);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 023/135] xhci: Force Maximum Packet size for Full-speed bulk devices to valid range.
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (21 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 022/135] staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 024/135] xhci: fix runtime pm enabling for quirky Intel hosts Greg Kroah-Hartman
` (115 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Rene D Obermueller, Mathias Nyman
From: Mathias Nyman <mathias.nyman@linux.intel.com>
commit f148b9f402ef002b57bcff3964d45abc8ffb6c3f upstream.
A Full-speed bulk USB audio device (DJ-Tech CTRL) with a invalid Maximum
Packet Size of 4 causes a xHC "Parameter Error" at enumeration.
This is because valid Maximum packet sizes for Full-speed bulk endpoints
are 8, 16, 32 and 64 bytes. Hosts are not required to support other values
than these. See usb 2 specs section 5.8.3 for details.
The device starts working after forcing the maximum packet size to 8.
This is most likely the case with other devices as well, so force the
maximum packet size to a valid range.
Cc: stable@vger.kernel.org
Reported-by: Rene D Obermueller <cmdrrdo@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200210134553.9144-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-mem.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1475,9 +1475,15 @@ int xhci_endpoint_init(struct xhci_hcd *
/* Allow 3 retries for everything but isoc, set CErr = 3 */
if (!usb_endpoint_xfer_isoc(&ep->desc))
err_count = 3;
- /* Some devices get this wrong */
- if (usb_endpoint_xfer_bulk(&ep->desc) && udev->speed == USB_SPEED_HIGH)
- max_packet = 512;
+ /* HS bulk max packet should be 512, FS bulk supports 8, 16, 32 or 64 */
+ if (usb_endpoint_xfer_bulk(&ep->desc)) {
+ if (udev->speed == USB_SPEED_HIGH)
+ max_packet = 512;
+ if (udev->speed == USB_SPEED_FULL) {
+ max_packet = rounddown_pow_of_two(max_packet);
+ max_packet = clamp_val(max_packet, 8, 64);
+ }
+ }
/* xHCI 1.0 and 1.1 indicates that ctrl ep avg TRB Length should be 8 */
if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version >= 0x100)
avg_trb_len = 8;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 024/135] xhci: fix runtime pm enabling for quirky Intel hosts
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (22 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 023/135] xhci: Force Maximum Packet size for Full-speed bulk devices to valid range Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 025/135] xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms Greg Kroah-Hartman
` (114 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Mathias Nyman
From: Mathias Nyman <mathias.nyman@linux.intel.com>
commit 024d411e9c5d49eb96c825af52a3ce2682895676 upstream.
Intel hosts that need the XHCI_PME_STUCK_QUIRK flag should enable
runtime pm by calling xhci_pme_acpi_rtd3_enable() before
usb_hcd_pci_probe() calls pci_dev_run_wake().
Otherwise usage count for the device won't be decreased, and runtime
suspend is prevented.
usb_hcd_pci_probe() only decreases the usage count if device can
generate run-time wake-up events, i.e. when pci_dev_run_wake()
returns true.
This issue was exposed by pci_dev_run_wake() change in
commit 8feaec33b986 ("PCI / PM: Always check PME wakeup capability for
runtime wakeup support")
and should be backported to kernels with that change
Cc: <stable@vger.kernel.org> # 4.13+
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200210134553.9144-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-pci.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -302,6 +302,9 @@ static int xhci_pci_setup(struct usb_hcd
if (!usb_hcd_is_primary_hcd(hcd))
return 0;
+ if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
+ xhci_pme_acpi_rtd3_enable(pdev);
+
xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
/* Find any debug ports */
@@ -359,9 +362,6 @@ static int xhci_pci_probe(struct pci_dev
HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
- if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
- xhci_pme_acpi_rtd3_enable(dev);
-
/* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
pm_runtime_put_noidle(&dev->dev);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 025/135] xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (23 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 024/135] xhci: fix runtime pm enabling for quirky Intel hosts Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 026/135] xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2 Greg Kroah-Hartman
` (113 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Mathias Nyman
From: Mathias Nyman <mathias.nyman@linux.intel.com>
commit a3ae87dce3a5abe0b57c811bab02b2564b574106 upstream.
Intel Comet Lake based platform require the XHCI_PME_STUCK_QUIRK
quirk as well. Without this xHC can not enter D3 in runtime suspend.
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200210134553.9144-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -49,6 +49,7 @@
#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_XHCI 0x15ec
#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_XHCI 0x15f0
#define PCI_DEVICE_ID_INTEL_ICE_LAKE_XHCI 0x8a13
+#define PCI_DEVICE_ID_INTEL_CML_XHCI 0xa3af
#define PCI_DEVICE_ID_AMD_PROMONTORYA_4 0x43b9
#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba
@@ -187,7 +188,8 @@ static void xhci_pci_quirks(struct devic
pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI ||
pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
- pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI)) {
+ pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_CML_XHCI)) {
xhci->quirks |= XHCI_PME_STUCK_QUIRK;
}
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 026/135] xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (24 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 025/135] xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 027/135] usb: host: xhci: update event ring dequeue pointer on purpose Greg Kroah-Hartman
` (112 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Paul Menzel, Sajja Venkateswara Rao,
Mathias Nyman, Marek Szyprowski
From: Mathias Nyman <mathias.nyman@linux.intel.com>
commit cf0ee7c60c89641f6e4d1d3c7867fe32b9e30300 upstream.
xhci driver assumed that xHC controllers have at most one custom
supported speed table (PSI) for all usb 3.x ports.
Memory was allocated for one PSI table under the xhci hub structure.
Turns out this is not the case, some controllers have a separate
"supported protocol capability" entry with a PSI table for each port.
This means each usb3 roothub port can in theory support different custom
speeds.
To solve this, cache all supported protocol capabilities with their PSI
tables in an array, and add pointers to the xhci port structure so that
every port points to its capability entry in the array.
When creating the SuperSpeedPlus USB Device Capability BOS descriptor
for the xhci USB 3.1 roothub we for now will use only data from the
first USB 3.1 capable protocol capability entry in the array.
This could be improved later, this patch focuses resolving
the memory leak.
Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reported-by: Sajja Venkateswara Rao <VenkateswaraRao.Sajja@amd.com>
Fixes: 47189098f8be ("xhci: parse xhci protocol speed ID list for usb 3.1 usage")
Cc: stable <stable@vger.kernel.org> # v4.4+
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200211150158.14475-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-hub.c | 25 ++++++++++++------
drivers/usb/host/xhci-mem.c | 61 +++++++++++++++++++++++++++-----------------
drivers/usb/host/xhci.h | 14 +++++++---
3 files changed, 66 insertions(+), 34 deletions(-)
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -55,6 +55,7 @@ static u8 usb_bos_descriptor [] = {
static int xhci_create_usb3_bos_desc(struct xhci_hcd *xhci, char *buf,
u16 wLength)
{
+ struct xhci_port_cap *port_cap = NULL;
int i, ssa_count;
u32 temp;
u16 desc_size, ssp_cap_size, ssa_size = 0;
@@ -64,16 +65,24 @@ static int xhci_create_usb3_bos_desc(str
ssp_cap_size = sizeof(usb_bos_descriptor) - desc_size;
/* does xhci support USB 3.1 Enhanced SuperSpeed */
- if (xhci->usb3_rhub.min_rev >= 0x01) {
+ for (i = 0; i < xhci->num_port_caps; i++) {
+ if (xhci->port_caps[i].maj_rev == 0x03 &&
+ xhci->port_caps[i].min_rev >= 0x01) {
+ usb3_1 = true;
+ port_cap = &xhci->port_caps[i];
+ break;
+ }
+ }
+
+ if (usb3_1) {
/* does xhci provide a PSI table for SSA speed attributes? */
- if (xhci->usb3_rhub.psi_count) {
+ if (port_cap->psi_count) {
/* two SSA entries for each unique PSI ID, RX and TX */
- ssa_count = xhci->usb3_rhub.psi_uid_count * 2;
+ ssa_count = port_cap->psi_uid_count * 2;
ssa_size = ssa_count * sizeof(u32);
ssp_cap_size -= 16; /* skip copying the default SSA */
}
desc_size += ssp_cap_size;
- usb3_1 = true;
}
memcpy(buf, &usb_bos_descriptor, min(desc_size, wLength));
@@ -99,7 +108,7 @@ static int xhci_create_usb3_bos_desc(str
}
/* If PSI table exists, add the custom speed attributes from it */
- if (usb3_1 && xhci->usb3_rhub.psi_count) {
+ if (usb3_1 && port_cap->psi_count) {
u32 ssp_cap_base, bm_attrib, psi, psi_mant, psi_exp;
int offset;
@@ -111,7 +120,7 @@ static int xhci_create_usb3_bos_desc(str
/* attribute count SSAC bits 4:0 and ID count SSIC bits 8:5 */
bm_attrib = (ssa_count - 1) & 0x1f;
- bm_attrib |= (xhci->usb3_rhub.psi_uid_count - 1) << 5;
+ bm_attrib |= (port_cap->psi_uid_count - 1) << 5;
put_unaligned_le32(bm_attrib, &buf[ssp_cap_base + 4]);
if (wLength < desc_size + ssa_size)
@@ -124,8 +133,8 @@ static int xhci_create_usb3_bos_desc(str
* USB 3.1 requires two SSA entries (RX and TX) for every link
*/
offset = desc_size;
- for (i = 0; i < xhci->usb3_rhub.psi_count; i++) {
- psi = xhci->usb3_rhub.psi[i];
+ for (i = 0; i < port_cap->psi_count; i++) {
+ psi = port_cap->psi[i];
psi &= ~USB_SSP_SUBLINK_SPEED_RSVD;
psi_exp = XHCI_EXT_PORT_PSIE(psi);
psi_mant = XHCI_EXT_PORT_PSIM(psi);
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1915,17 +1915,17 @@ no_bw:
xhci->usb3_rhub.num_ports = 0;
xhci->num_active_eps = 0;
kfree(xhci->usb2_rhub.ports);
- kfree(xhci->usb2_rhub.psi);
kfree(xhci->usb3_rhub.ports);
- kfree(xhci->usb3_rhub.psi);
kfree(xhci->hw_ports);
kfree(xhci->rh_bw);
kfree(xhci->ext_caps);
+ for (i = 0; i < xhci->num_port_caps; i++)
+ kfree(xhci->port_caps[i].psi);
+ kfree(xhci->port_caps);
+ xhci->num_port_caps = 0;
xhci->usb2_rhub.ports = NULL;
- xhci->usb2_rhub.psi = NULL;
xhci->usb3_rhub.ports = NULL;
- xhci->usb3_rhub.psi = NULL;
xhci->hw_ports = NULL;
xhci->rh_bw = NULL;
xhci->ext_caps = NULL;
@@ -2126,6 +2126,7 @@ static void xhci_add_in_port(struct xhci
u8 major_revision, minor_revision;
struct xhci_hub *rhub;
struct device *dev = xhci_to_hcd(xhci)->self.sysdev;
+ struct xhci_port_cap *port_cap;
temp = readl(addr);
major_revision = XHCI_EXT_PORT_MAJOR(temp);
@@ -2160,31 +2161,39 @@ static void xhci_add_in_port(struct xhci
/* WTF? "Valid values are ‘1’ to MaxPorts" */
return;
- rhub->psi_count = XHCI_EXT_PORT_PSIC(temp);
- if (rhub->psi_count) {
- rhub->psi = kcalloc_node(rhub->psi_count, sizeof(*rhub->psi),
- GFP_KERNEL, dev_to_node(dev));
- if (!rhub->psi)
- rhub->psi_count = 0;
-
- rhub->psi_uid_count++;
- for (i = 0; i < rhub->psi_count; i++) {
- rhub->psi[i] = readl(addr + 4 + i);
+ port_cap = &xhci->port_caps[xhci->num_port_caps++];
+ if (xhci->num_port_caps > max_caps)
+ return;
+
+ port_cap->maj_rev = major_revision;
+ port_cap->min_rev = minor_revision;
+ port_cap->psi_count = XHCI_EXT_PORT_PSIC(temp);
+
+ if (port_cap->psi_count) {
+ port_cap->psi = kcalloc_node(port_cap->psi_count,
+ sizeof(*port_cap->psi),
+ GFP_KERNEL, dev_to_node(dev));
+ if (!port_cap->psi)
+ port_cap->psi_count = 0;
+
+ port_cap->psi_uid_count++;
+ for (i = 0; i < port_cap->psi_count; i++) {
+ port_cap->psi[i] = readl(addr + 4 + i);
/* count unique ID values, two consecutive entries can
* have the same ID if link is assymetric
*/
- if (i && (XHCI_EXT_PORT_PSIV(rhub->psi[i]) !=
- XHCI_EXT_PORT_PSIV(rhub->psi[i - 1])))
- rhub->psi_uid_count++;
+ if (i && (XHCI_EXT_PORT_PSIV(port_cap->psi[i]) !=
+ XHCI_EXT_PORT_PSIV(port_cap->psi[i - 1])))
+ port_cap->psi_uid_count++;
xhci_dbg(xhci, "PSIV:%d PSIE:%d PLT:%d PFD:%d LP:%d PSIM:%d\n",
- XHCI_EXT_PORT_PSIV(rhub->psi[i]),
- XHCI_EXT_PORT_PSIE(rhub->psi[i]),
- XHCI_EXT_PORT_PLT(rhub->psi[i]),
- XHCI_EXT_PORT_PFD(rhub->psi[i]),
- XHCI_EXT_PORT_LP(rhub->psi[i]),
- XHCI_EXT_PORT_PSIM(rhub->psi[i]));
+ XHCI_EXT_PORT_PSIV(port_cap->psi[i]),
+ XHCI_EXT_PORT_PSIE(port_cap->psi[i]),
+ XHCI_EXT_PORT_PLT(port_cap->psi[i]),
+ XHCI_EXT_PORT_PFD(port_cap->psi[i]),
+ XHCI_EXT_PORT_LP(port_cap->psi[i]),
+ XHCI_EXT_PORT_PSIM(port_cap->psi[i]));
}
}
/* cache usb2 port capabilities */
@@ -2219,6 +2228,7 @@ static void xhci_add_in_port(struct xhci
continue;
}
hw_port->rhub = rhub;
+ hw_port->port_cap = port_cap;
rhub->num_ports++;
}
/* FIXME: Should we disable ports not in the Extended Capabilities? */
@@ -2309,6 +2319,11 @@ static int xhci_setup_port_arrays(struct
if (!xhci->ext_caps)
return -ENOMEM;
+ xhci->port_caps = kcalloc_node(cap_count, sizeof(*xhci->port_caps),
+ flags, dev_to_node(dev));
+ if (!xhci->port_caps)
+ return -ENOMEM;
+
offset = cap_start;
while (offset) {
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1702,12 +1702,20 @@ struct xhci_bus_state {
* Intel Lynx Point LP xHCI host.
*/
#define XHCI_MAX_REXIT_TIMEOUT_MS 20
+struct xhci_port_cap {
+ u32 *psi; /* array of protocol speed ID entries */
+ u8 psi_count;
+ u8 psi_uid_count;
+ u8 maj_rev;
+ u8 min_rev;
+};
struct xhci_port {
__le32 __iomem *addr;
int hw_portnum;
int hcd_portnum;
struct xhci_hub *rhub;
+ struct xhci_port_cap *port_cap;
};
struct xhci_hub {
@@ -1719,9 +1727,6 @@ struct xhci_hub {
/* supported prococol extended capabiliy values */
u8 maj_rev;
u8 min_rev;
- u32 *psi; /* array of protocol speed ID entries */
- u8 psi_count;
- u8 psi_uid_count;
};
/* There is one xhci_hcd structure per controller */
@@ -1880,6 +1885,9 @@ struct xhci_hcd {
/* cached usb2 extened protocol capabilites */
u32 *ext_caps;
unsigned int num_ext_caps;
+ /* cached extended protocol port capabilities */
+ struct xhci_port_cap *port_caps;
+ unsigned int num_port_caps;
/* Compliance Mode Recovery Data */
struct timer_list comp_mode_recovery_timer;
u32 port_status_u0;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 027/135] usb: host: xhci: update event ring dequeue pointer on purpose
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (25 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 026/135] xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2 Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 028/135] USB: core: add endpoint-blacklist quirk Greg Kroah-Hartman
` (111 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Peter Chen, Mathias Nyman, Fabio Estevam
From: Peter Chen <peter.chen@nxp.com>
commit dc0ffbea5729a3abafa577ebfce87f18b79e294b upstream.
On some situations, the software handles TRB events slower
than adding TRBs, then xhci_handle_event can't return zero
long time, the xHC will consider the event ring is full,
and trigger "Event Ring Full" error, but in fact, the software
has already finished lots of events, just no chance to
update ERDP (event ring dequeue pointer).
In this commit, we force update ERDP if half of TRBS_PER_SEGMENT
events have handled to avoid "Event Ring Full" error.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1573836603-10871-2-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-ring.c | 60 ++++++++++++++++++++++++++++++-------------
1 file changed, 43 insertions(+), 17 deletions(-)
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2741,6 +2741,42 @@ static int xhci_handle_event(struct xhci
}
/*
+ * Update Event Ring Dequeue Pointer:
+ * - When all events have finished
+ * - To avoid "Event Ring Full Error" condition
+ */
+static void xhci_update_erst_dequeue(struct xhci_hcd *xhci,
+ union xhci_trb *event_ring_deq)
+{
+ u64 temp_64;
+ dma_addr_t deq;
+
+ temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
+ /* If necessary, update the HW's version of the event ring deq ptr. */
+ if (event_ring_deq != xhci->event_ring->dequeue) {
+ deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg,
+ xhci->event_ring->dequeue);
+ if (deq == 0)
+ xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr\n");
+ /*
+ * Per 4.9.4, Software writes to the ERDP register shall
+ * always advance the Event Ring Dequeue Pointer value.
+ */
+ if ((temp_64 & (u64) ~ERST_PTR_MASK) ==
+ ((u64) deq & (u64) ~ERST_PTR_MASK))
+ return;
+
+ /* Update HC event ring dequeue pointer */
+ temp_64 &= ERST_PTR_MASK;
+ temp_64 |= ((u64) deq & (u64) ~ERST_PTR_MASK);
+ }
+
+ /* Clear the event handler busy flag (RW1C) */
+ temp_64 |= ERST_EHB;
+ xhci_write_64(xhci, temp_64, &xhci->ir_set->erst_dequeue);
+}
+
+/*
* xHCI spec says we can get an interrupt, and if the HC has an error condition,
* we might get bad data out of the event ring. Section 4.10.2.7 has a list of
* indicators of an event TRB error, but we check the status *first* to be safe.
@@ -2751,9 +2787,9 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd
union xhci_trb *event_ring_deq;
irqreturn_t ret = IRQ_NONE;
unsigned long flags;
- dma_addr_t deq;
u64 temp_64;
u32 status;
+ int event_loop = 0;
spin_lock_irqsave(&xhci->lock, flags);
/* Check if the xHC generated the interrupt, or the irq is shared */
@@ -2807,24 +2843,14 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd
/* FIXME this should be a delayed service routine
* that clears the EHB.
*/
- while (xhci_handle_event(xhci) > 0) {}
-
- temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
- /* If necessary, update the HW's version of the event ring deq ptr. */
- if (event_ring_deq != xhci->event_ring->dequeue) {
- deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg,
- xhci->event_ring->dequeue);
- if (deq == 0)
- xhci_warn(xhci, "WARN something wrong with SW event "
- "ring dequeue ptr.\n");
- /* Update HC event ring dequeue pointer */
- temp_64 &= ERST_PTR_MASK;
- temp_64 |= ((u64) deq & (u64) ~ERST_PTR_MASK);
+ while (xhci_handle_event(xhci) > 0) {
+ if (event_loop++ < TRBS_PER_SEGMENT / 2)
+ continue;
+ xhci_update_erst_dequeue(xhci, event_ring_deq);
+ event_loop = 0;
}
- /* Clear the event handler busy flag (RW1C); event ring is empty. */
- temp_64 |= ERST_EHB;
- xhci_write_64(xhci, temp_64, &xhci->ir_set->erst_dequeue);
+ xhci_update_erst_dequeue(xhci, event_ring_deq);
ret = IRQ_HANDLED;
out:
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 028/135] USB: core: add endpoint-blacklist quirk
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (26 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 027/135] usb: host: xhci: update event ring dequeue pointer on purpose Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 029/135] USB: quirks: blacklist duplicate ep on Sound Devices USBPre2 Greg Kroah-Hartman
` (110 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, edes, Johan Hovold
From: Johan Hovold <johan@kernel.org>
commit 73f8bda9b5dc1c69df2bc55c0cbb24461a6391a9 upstream.
Add a new device quirk that can be used to blacklist endpoints.
Since commit 3e4f8e21c4f2 ("USB: core: fix check for duplicate
endpoints") USB core ignores any duplicate endpoints found during
descriptor parsing.
In order to handle devices where the first interfaces with duplicate
endpoints are the ones that should have their endpoints ignored, we need
to add a blacklist.
Tested-by: edes <edes@gmx.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200203153830.26394-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/config.c | 11 +++++++++++
drivers/usb/core/quirks.c | 32 ++++++++++++++++++++++++++++++++
drivers/usb/core/usb.h | 3 +++
include/linux/usb/quirks.h | 3 +++
4 files changed, 49 insertions(+)
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -256,6 +256,7 @@ static int usb_parse_endpoint(struct dev
struct usb_host_interface *ifp, int num_ep,
unsigned char *buffer, int size)
{
+ struct usb_device *udev = to_usb_device(ddev);
unsigned char *buffer0 = buffer;
struct usb_endpoint_descriptor *d;
struct usb_host_endpoint *endpoint;
@@ -297,6 +298,16 @@ static int usb_parse_endpoint(struct dev
goto skip_to_next_endpoint_or_interface_descriptor;
}
+ /* Ignore blacklisted endpoints */
+ if (udev->quirks & USB_QUIRK_ENDPOINT_BLACKLIST) {
+ if (usb_endpoint_is_blacklisted(udev, ifp, d)) {
+ dev_warn(ddev, "config %d interface %d altsetting %d has a blacklisted endpoint with address 0x%X, skipping\n",
+ cfgno, inum, asnum,
+ d->bEndpointAddress);
+ goto skip_to_next_endpoint_or_interface_descriptor;
+ }
+ }
+
endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
++ifp->desc.bNumEndpoints;
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -472,6 +472,38 @@ static const struct usb_device_id usb_am
{ } /* terminating entry must be last */
};
+/*
+ * Entries for blacklisted endpoints that should be ignored when parsing
+ * configuration descriptors.
+ *
+ * Matched for devices with USB_QUIRK_ENDPOINT_BLACKLIST.
+ */
+static const struct usb_device_id usb_endpoint_blacklist[] = {
+ { }
+};
+
+bool usb_endpoint_is_blacklisted(struct usb_device *udev,
+ struct usb_host_interface *intf,
+ struct usb_endpoint_descriptor *epd)
+{
+ const struct usb_device_id *id;
+ unsigned int address;
+
+ for (id = usb_endpoint_blacklist; id->match_flags; ++id) {
+ if (!usb_match_device(udev, id))
+ continue;
+
+ if (!usb_match_one_id_intf(udev, intf, id))
+ continue;
+
+ address = id->driver_info;
+ if (address == epd->bEndpointAddress)
+ return true;
+ }
+
+ return false;
+}
+
static bool usb_match_any_interface(struct usb_device *udev,
const struct usb_device_id *id)
{
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -37,6 +37,9 @@ extern void usb_authorize_interface(stru
extern void usb_detect_quirks(struct usb_device *udev);
extern void usb_detect_interface_quirks(struct usb_device *udev);
extern void usb_release_quirk_list(void);
+extern bool usb_endpoint_is_blacklisted(struct usb_device *udev,
+ struct usb_host_interface *intf,
+ struct usb_endpoint_descriptor *epd);
extern int usb_remove_device(struct usb_device *udev);
extern int usb_get_device_descriptor(struct usb_device *dev,
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -69,4 +69,7 @@
/* Hub needs extra delay after resetting its port. */
#define USB_QUIRK_HUB_SLOW_RESET BIT(14)
+/* device has blacklisted endpoints */
+#define USB_QUIRK_ENDPOINT_BLACKLIST BIT(15)
+
#endif /* __LINUX_USB_QUIRKS_H */
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 029/135] USB: quirks: blacklist duplicate ep on Sound Devices USBPre2
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (27 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 028/135] USB: core: add endpoint-blacklist quirk Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 030/135] usb: uas: fix a plug & unplug racing Greg Kroah-Hartman
` (109 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, edes, Johan Hovold
From: Johan Hovold <johan@kernel.org>
commit bdd1b147b8026df0e4260b387026b251d888ed01 upstream.
This device has a broken vendor-specific altsetting for interface 1,
where endpoint 0x85 is declared as an isochronous endpoint despite being
used by interface 2 for audio capture.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x0926
idProduct 0x0202
bcdDevice 1.00
iManufacturer 1 Sound Devices
iProduct 2 USBPre2
iSerial 3 [...]
bNumConfigurations 1
[...]
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0126 1x 294 bytes
bInterval 1
[...]
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 4
bDelay 1 frames
wFormatTag 0x0001 PCM
AudioStreaming Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 6 Discrete
tSamFreq[ 0] 8000
tSamFreq[ 1] 16000
tSamFreq[ 2] 24000
tSamFreq[ 3] 32000
tSamFreq[ 4] 44100
tSamFreq[ 5] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0126 1x 294 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 0x0000
Since commit 3e4f8e21c4f2 ("USB: core: fix check for duplicate
endpoints") USB core ignores any duplicate endpoints found during
descriptor parsing, but in this case we need to ignore the first
instance in order to avoid breaking the audio capture interface.
Fixes: 3e4f8e21c4f2 ("USB: core: fix check for duplicate endpoints")
Cc: stable <stable@vger.kernel.org>
Reported-by: edes <edes@gmx.net>
Tested-by: edes <edes@gmx.net>
Link: https://lore.kernel.org/r/20200201105829.5682c887@acme7.acmenet
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200203153830.26394-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/quirks.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -354,6 +354,10 @@ static const struct usb_device_id usb_qu
{ USB_DEVICE(0x0904, 0x6103), .driver_info =
USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL },
+ /* Sound Devices USBPre2 */
+ { USB_DEVICE(0x0926, 0x0202), .driver_info =
+ USB_QUIRK_ENDPOINT_BLACKLIST },
+
/* Keytouch QWERTY Panel keyboard */
{ USB_DEVICE(0x0926, 0x3333), .driver_info =
USB_QUIRK_CONFIG_INTF_STRINGS },
@@ -479,6 +483,7 @@ static const struct usb_device_id usb_am
* Matched for devices with USB_QUIRK_ENDPOINT_BLACKLIST.
*/
static const struct usb_device_id usb_endpoint_blacklist[] = {
+ { USB_DEVICE_INTERFACE_NUMBER(0x0926, 0x0202, 1), .driver_info = 0x85 },
{ }
};
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 030/135] usb: uas: fix a plug & unplug racing
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (28 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 029/135] USB: quirks: blacklist duplicate ep on Sound Devices USBPre2 Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 031/135] USB: Fix novation SourceControl XL after suspend Greg Kroah-Hartman
` (108 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, EJ Hsu, Oliver Neukum
From: EJ Hsu <ejh@nvidia.com>
commit 3e99862c05a9caa5a27969f41566b428696f5a9a upstream.
When a uas disk is plugged into an external hub, uas_probe()
will be called by the hub thread to do the probe. It will
first create a SCSI host and then do the scan for this host.
During the scan, it will probe the LUN using SCSI INQUERY command
which will be packed in the URB and submitted to uas disk.
There might be a chance that this external hub with uas disk
attached is unplugged during the scan. In this case, uas driver
will fail to submit the URB (due to the NOTATTACHED state of uas
device) and try to put this SCSI command back to request queue
waiting for next chance to run.
In normal case, this cycle will terminate when hub thread gets
disconnection event and calls into uas_disconnect() accordingly.
But in this case, uas_disconnect() will not be called because
hub thread of external hub gets stuck waiting for the completion
of this SCSI command. A deadlock happened.
In this fix, uas will call scsi_scan_host() asynchronously to
avoid the blocking of hub thread.
Signed-off-by: EJ Hsu <ejh@nvidia.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200130092506.102760-1-ejh@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/storage/uas.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -45,6 +45,7 @@ struct uas_dev_info {
struct scsi_cmnd *cmnd[MAX_CMNDS];
spinlock_t lock;
struct work_struct work;
+ struct work_struct scan_work; /* for async scanning */
};
enum {
@@ -114,6 +115,17 @@ out:
spin_unlock_irqrestore(&devinfo->lock, flags);
}
+static void uas_scan_work(struct work_struct *work)
+{
+ struct uas_dev_info *devinfo =
+ container_of(work, struct uas_dev_info, scan_work);
+ struct Scsi_Host *shost = usb_get_intfdata(devinfo->intf);
+
+ dev_dbg(&devinfo->intf->dev, "starting scan\n");
+ scsi_scan_host(shost);
+ dev_dbg(&devinfo->intf->dev, "scan complete\n");
+}
+
static void uas_add_work(struct uas_cmd_info *cmdinfo)
{
struct scsi_pointer *scp = (void *)cmdinfo;
@@ -983,6 +995,7 @@ static int uas_probe(struct usb_interfac
init_usb_anchor(&devinfo->data_urbs);
spin_lock_init(&devinfo->lock);
INIT_WORK(&devinfo->work, uas_do_work);
+ INIT_WORK(&devinfo->scan_work, uas_scan_work);
result = uas_configure_endpoints(devinfo);
if (result)
@@ -999,7 +1012,9 @@ static int uas_probe(struct usb_interfac
if (result)
goto free_streams;
- scsi_scan_host(shost);
+ /* Submit the delayed_work for SCSI-device scanning */
+ schedule_work(&devinfo->scan_work);
+
return result;
free_streams:
@@ -1167,6 +1182,12 @@ static void uas_disconnect(struct usb_in
usb_kill_anchored_urbs(&devinfo->data_urbs);
uas_zap_pending(devinfo, DID_NO_CONNECT);
+ /*
+ * Prevent SCSI scanning (if it hasn't started yet)
+ * or wait for the SCSI-scanning routine to stop.
+ */
+ cancel_work_sync(&devinfo->scan_work);
+
scsi_remove_host(shost);
uas_free_streams(devinfo);
scsi_host_put(shost);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 031/135] USB: Fix novation SourceControl XL after suspend
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (29 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 030/135] usb: uas: fix a plug & unplug racing Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 032/135] USB: hub: Dont record a connect-change event during reset-resume Greg Kroah-Hartman
` (107 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Richard Dodd
From: Richard Dodd <richard.o.dodd@gmail.com>
commit b692056db8ecc7f452b934f016c17348282b7699 upstream.
Currently, the SourceControl will stay in power-down mode after resuming
from suspend. This patch resets the device after suspend to power it up.
Signed-off-by: Richard Dodd <richard.o.dodd@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200212142220.36892-1-richard.o.dodd@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/quirks.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -449,6 +449,9 @@ static const struct usb_device_id usb_qu
/* INTEL VALUE SSD */
{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* novation SoundControl XL */
+ { USB_DEVICE(0x1235, 0x0061), .driver_info = USB_QUIRK_RESET_RESUME },
+
{ } /* terminating entry must be last */
};
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 032/135] USB: hub: Dont record a connect-change event during reset-resume
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (30 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 031/135] USB: Fix novation SourceControl XL after suspend Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 033/135] USB: hub: Fix the broken detection of USB3 device in SMSC hub Greg Kroah-Hartman
` (106 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Alan Stern, David Heinzelmann,
Paul Zimmerman
From: Alan Stern <stern@rowland.harvard.edu>
commit 8099f58f1ecddf4f374f4828a3dff8397c7cbd74 upstream.
Paul Zimmerman reports that his USB Bluetooth adapter sometimes
crashes following system resume, when it receives a
Get-Device-Descriptor request while it is busy doing something else.
Such a request was added by commit a4f55d8b8c14 ("usb: hub: Check
device descriptor before resusciation"). It gets sent when the hub
driver's work thread checks whether a connect-change event on an
enabled port really indicates a new device has been connected, as
opposed to an old device momentarily disconnecting and then
reconnecting (which can happen with xHCI host controllers, since they
automatically enable connected ports).
The same kind of thing occurs when a port's power session is lost
during system suspend. When the system wakes up it sees a
connect-change event on the port, and if the child device's
persist_enabled flag was set then hub_activate() sets the device's
reset_resume flag as well as the port's bit in hub->change_bits. The
reset-resume code then takes responsibility for checking that the same
device is still attached to the port, and it does this as part of the
device's resume pathway. By the time the hub driver's work thread
starts up again, the device has already been fully reinitialized and
is busy doing its own thing. There's no need for the work thread to
do the same check a second time, and in fact this unnecessary check is
what caused the problem that Paul observed.
Note that performing the unnecessary check is not actually a bug.
Devices are supposed to be able to send descriptors back to the host
even when they are busy doing something else. The underlying cause of
Paul's problem lies in his Bluetooth adapter. Nevertheless, we
shouldn't perform the same check twice in a row -- and as a nice side
benefit, removing the extra check allows the Bluetooth adapter to work
more reliably.
The work thread performs its check when it sees that the port's bit is
set in hub->change_bits. In this situation that bit is interpreted as
though a connect-change event had occurred on the port _after_ the
reset-resume, which is not what actually happened.
One possible fix would be to make the reset-resume code clear the
port's bit in hub->change_bits. But it seems simpler to just avoid
setting the bit during hub_activate() in the first place. That's what
this patch does.
(Proving that the patch is correct when CONFIG_PM is disabled requires
a little thought. In that setting hub_activate() will be called only
for initialization and resets, since there won't be any resumes or
reset-resumes. During initialization and hub resets the hub doesn't
have any child devices, and so this code path never gets executed.)
Reported-and-tested-by: Paul Zimmerman <pauldzim@gmail.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://marc.info/?t=157949360700001&r=1&w=2
CC: David Heinzelmann <heinzelmann.david@gmail.com>
CC: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/Pine.LNX.4.44L0.2001311037460.1577-100000@iolanthe.rowland.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/hub.c | 5 -----
1 file changed, 5 deletions(-)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1216,11 +1216,6 @@ static void hub_activate(struct usb_hub
#ifdef CONFIG_PM
udev->reset_resume = 1;
#endif
- /* Don't set the change_bits when the device
- * was powered off.
- */
- if (test_bit(port1, hub->power_bits))
- set_bit(port1, hub->change_bits);
} else {
/* The power session is gone; tell hub_wq */
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 033/135] USB: hub: Fix the broken detection of USB3 device in SMSC hub
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (31 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 032/135] USB: hub: Dont record a connect-change event during reset-resume Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 034/135] usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows Greg Kroah-Hartman
` (105 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Alan Stern, Hardik Gajjar, Eugeniu Rosca
From: Hardik Gajjar <hgajjar@de.adit-jv.com>
commit 1208f9e1d758c991b0a46a1bd60c616b906bbe27 upstream.
Renesas R-Car H3ULCB + Kingfisher Infotainment Board is either not able
to detect the USB3.0 mass storage devices or is detecting those as
USB2.0 high speed devices.
The explanation given by Renesas is that, due to a HW issue, the XHCI
driver does not wake up after going to sleep on connecting a USB3.0
device.
In order to mitigate that, disable the auto-suspend feature
specifically for SMSC hubs from hub_probe() function, as a quirk.
Renesas Kingfisher Infotainment Board has two USB3.0 ports (CN2) which
are connected via USB5534B 4-port SuperSpeed/Hi-Speed, low-power,
configurable hub controller.
[1] SanDisk USB 3.0 device detected as USB-2.0 before the patch
[ 74.036390] usb 5-1.1: new high-speed USB device number 4 using xhci-hcd
[ 74.061598] usb 5-1.1: New USB device found, idVendor=0781, idProduct=5581, bcdDevice= 1.00
[ 74.069976] usb 5-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 74.077303] usb 5-1.1: Product: Ultra
[ 74.080980] usb 5-1.1: Manufacturer: SanDisk
[ 74.085263] usb 5-1.1: SerialNumber: 4C530001110208116550
[2] SanDisk USB 3.0 device detected as USB-3.0 after the patch
[ 34.565078] usb 6-1.1: new SuperSpeed Gen 1 USB device number 3 using xhci-hcd
[ 34.588719] usb 6-1.1: New USB device found, idVendor=0781, idProduct=5581, bcdDevice= 1.00
[ 34.597098] usb 6-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 34.604430] usb 6-1.1: Product: Ultra
[ 34.608110] usb 6-1.1: Manufacturer: SanDisk
[ 34.612397] usb 6-1.1: SerialNumber: 4C530001110208116550
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Hardik Gajjar <hgajjar@de.adit-jv.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1580989763-32291-1-git-send-email-hgajjar@de.adit-jv.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/hub.c | 15 +++++++++++++++
drivers/usb/core/hub.h | 1 +
2 files changed, 16 insertions(+)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -37,7 +37,9 @@
#include "otg_whitelist.h"
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
+#define USB_VENDOR_SMSC 0x0424
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
+#define HUB_QUIRK_DISABLE_AUTOSUSPEND 0x02
#define USB_TP_TRANSMISSION_DELAY 40 /* ns */
#define USB_TP_TRANSMISSION_DELAY_MAX 65535 /* ns */
@@ -1725,6 +1727,10 @@ static void hub_disconnect(struct usb_in
kfree(hub->buffer);
pm_suspend_ignore_children(&intf->dev, false);
+
+ if (hub->quirk_disable_autosuspend)
+ usb_autopm_put_interface(intf);
+
kref_put(&hub->kref, hub_release);
}
@@ -1857,6 +1863,11 @@ static int hub_probe(struct usb_interfac
if (id->driver_info & HUB_QUIRK_CHECK_PORT_AUTOSUSPEND)
hub->quirk_check_port_auto_suspend = 1;
+ if (id->driver_info & HUB_QUIRK_DISABLE_AUTOSUSPEND) {
+ hub->quirk_disable_autosuspend = 1;
+ usb_autopm_get_interface(intf);
+ }
+
if (hub_configure(hub, &desc->endpoint[0].desc) >= 0)
return 0;
@@ -5479,6 +5490,10 @@ out_hdev_lock:
}
static const struct usb_device_id hub_id_table[] = {
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_CLASS,
+ .idVendor = USB_VENDOR_SMSC,
+ .bInterfaceClass = USB_CLASS_HUB,
+ .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
{ .match_flags = USB_DEVICE_ID_MATCH_VENDOR
| USB_DEVICE_ID_MATCH_INT_CLASS,
.idVendor = USB_VENDOR_GENESYS_LOGIC,
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -61,6 +61,7 @@ struct usb_hub {
unsigned quiescing:1;
unsigned disconnected:1;
unsigned in_reset:1;
+ unsigned quirk_disable_autosuspend:1;
unsigned quirk_check_port_auto_suspend:1;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 034/135] usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (32 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 033/135] USB: hub: Fix the broken detection of USB3 device in SMSC hub Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 035/135] usb: dwc3: gadget: Check for IOC/LST bit in TRB->ctrl fields Greg Kroah-Hartman
` (104 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Minas Harutyunyan, Jack Mitchell,
Felipe Balbi
From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
commit 9a0d6f7c0a83844baae1d6d85482863d2bf3b7a7 upstream.
SET/CLEAR_FEATURE for Remote Wakeup allowance not handled correctly.
GET_STATUS handling provided not correct data on DATA Stage.
Issue seen when gadget's dr_mode set to "otg" mode and connected
to MacOS.
Both are fixed and tested using USBCV Ch.9 tests.
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Fixes: fa389a6d7726 ("usb: dwc2: gadget: Add remote_wakeup_allowed flag")
Tested-by: Jack Mitchell <ml@embed.me.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/dwc2/gadget.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -1632,6 +1632,7 @@ static int dwc2_hsotg_process_req_status
struct dwc2_hsotg_ep *ep0 = hsotg->eps_out[0];
struct dwc2_hsotg_ep *ep;
__le16 reply;
+ u16 status;
int ret;
dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__);
@@ -1643,11 +1644,10 @@ static int dwc2_hsotg_process_req_status
switch (ctrl->bRequestType & USB_RECIP_MASK) {
case USB_RECIP_DEVICE:
- /*
- * bit 0 => self powered
- * bit 1 => remote wakeup
- */
- reply = cpu_to_le16(0);
+ status = 1 << USB_DEVICE_SELF_POWERED;
+ status |= hsotg->remote_wakeup_allowed <<
+ USB_DEVICE_REMOTE_WAKEUP;
+ reply = cpu_to_le16(status);
break;
case USB_RECIP_INTERFACE:
@@ -1758,7 +1758,10 @@ static int dwc2_hsotg_process_req_featur
case USB_RECIP_DEVICE:
switch (wValue) {
case USB_DEVICE_REMOTE_WAKEUP:
- hsotg->remote_wakeup_allowed = 1;
+ if (set)
+ hsotg->remote_wakeup_allowed = 1;
+ else
+ hsotg->remote_wakeup_allowed = 0;
break;
case USB_DEVICE_TEST_MODE:
@@ -1768,16 +1771,17 @@ static int dwc2_hsotg_process_req_featur
return -EINVAL;
hsotg->test_mode = wIndex >> 8;
- ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0);
- if (ret) {
- dev_err(hsotg->dev,
- "%s: failed to send reply\n", __func__);
- return ret;
- }
break;
default:
return -ENOENT;
}
+
+ ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0);
+ if (ret) {
+ dev_err(hsotg->dev,
+ "%s: failed to send reply\n", __func__);
+ return ret;
+ }
break;
case USB_RECIP_ENDPOINT:
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 035/135] usb: dwc3: gadget: Check for IOC/LST bit in TRB->ctrl fields
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (33 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 034/135] usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 036/135] usb: dwc3: debug: fix string position formatting mixup with ret and len Greg Kroah-Hartman
` (103 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Felipe Balbi, Yang Fei, Thinh Nguyen,
Tejas Joglekar, Andrzej Pietrasiewicz, Jack Pham, Todd Kjos,
Linux USB List, Anurag Kumar Vulisha, John Stultz
From: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
commit 5ee858975b13a9b40db00f456989a689fdbb296c upstream.
The current code in dwc3_gadget_ep_reclaim_completed_trb() will
check for IOC/LST bit in the event->status and returns if
IOC/LST bit is set. This logic doesn't work if multiple TRBs
are queued per request and the IOC/LST bit is set on the last
TRB of that request.
Consider an example where a queued request has multiple queued
TRBs and IOC/LST bit is set only for the last TRB. In this case,
the core generates XferComplete/XferInProgress events only for
the last TRB (since IOC/LST are set only for the last TRB). As
per the logic in dwc3_gadget_ep_reclaim_completed_trb()
event->status is checked for IOC/LST bit and returns on the
first TRB. This leaves the remaining TRBs left unhandled.
Similarly, if the gadget function enqueues an unaligned request
with sglist already in it, it should fail the same way, since we
will append another TRB to something that already uses more than
one TRB.
To aviod this, this patch changes the code to check for IOC/LST
bits in TRB->ctrl instead.
At a practical level, this patch resolves USB transfer stalls seen
with adb on dwc3 based HiKey960 after functionfs gadget added
scatter-gather support around v4.20.
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Yang Fei <fei.yang@intel.com>
Cc: Thinh Nguyen <thinhn@synopsys.com>
Cc: Tejas Joglekar <tejas.joglekar@synopsys.com>
Cc: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Cc: Jack Pham <jackp@codeaurora.org>
Cc: Todd Kjos <tkjos@google.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Linux USB List <linux-usb@vger.kernel.org>
Cc: stable <stable@vger.kernel.org>
Tested-by: Tejas Joglekar <tejas.joglekar@synopsys.com>
Reviewed-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
[jstultz: forward ported to mainline, reworded commit log, reworked
to only check trb->ctrl as suggested by Felipe]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/dwc3/gadget.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2426,7 +2426,8 @@ static int dwc3_gadget_ep_reclaim_comple
if (event->status & DEPEVT_STATUS_SHORT && !chain)
return 1;
- if (event->status & DEPEVT_STATUS_IOC)
+ if ((trb->ctrl & DWC3_TRB_CTRL_IOC) ||
+ (trb->ctrl & DWC3_TRB_CTRL_LST))
return 1;
return 0;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 036/135] usb: dwc3: debug: fix string position formatting mixup with ret and len
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (34 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 035/135] usb: dwc3: gadget: Check for IOC/LST bit in TRB->ctrl fields Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 037/135] scsi: Revert "target/core: Inline transport_lun_remove_cmd()" Greg Kroah-Hartman
` (102 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Colin Ian King, Dan Carpenter
From: Colin Ian King <colin.king@canonical.com>
commit b32196e35bd7bbc8038db1aba1fbf022dc469b6a upstream.
Currently the string formatting is mixing up the offset of ret and
len. Re-work the code to use just len, remove ret and use scnprintf
instead of snprintf and len position accumulation where required.
Remove the -ve return check since scnprintf never returns a failure
-ve size. Also break overly long lines to clean up checkpatch
warnings.
Addresses-Coverity: ("Unused value")
Fixes: 1381a5113caf ("usb: dwc3: debug: purge usage of strcat")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210095139.328711-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/dwc3/debug.h | 39 +++++++++++++++------------------------
1 file changed, 15 insertions(+), 24 deletions(-)
--- a/drivers/usb/dwc3/debug.h
+++ b/drivers/usb/dwc3/debug.h
@@ -256,86 +256,77 @@ static inline const char *dwc3_ep_event_
u8 epnum = event->endpoint_number;
size_t len;
int status;
- int ret;
- ret = snprintf(str, size, "ep%d%s: ", epnum >> 1,
+ len = scnprintf(str, size, "ep%d%s: ", epnum >> 1,
(epnum & 1) ? "in" : "out");
- if (ret < 0)
- return "UNKNOWN";
status = event->status;
switch (event->endpoint_event) {
case DWC3_DEPEVT_XFERCOMPLETE:
- len = strlen(str);
- snprintf(str + len, size - len, "Transfer Complete (%c%c%c)",
+ len += scnprintf(str + len, size - len,
+ "Transfer Complete (%c%c%c)",
status & DEPEVT_STATUS_SHORT ? 'S' : 's',
status & DEPEVT_STATUS_IOC ? 'I' : 'i',
status & DEPEVT_STATUS_LST ? 'L' : 'l');
- len = strlen(str);
-
if (epnum <= 1)
- snprintf(str + len, size - len, " [%s]",
+ scnprintf(str + len, size - len, " [%s]",
dwc3_ep0_state_string(ep0state));
break;
case DWC3_DEPEVT_XFERINPROGRESS:
- len = strlen(str);
-
- snprintf(str + len, size - len, "Transfer In Progress [%d] (%c%c%c)",
+ scnprintf(str + len, size - len,
+ "Transfer In Progress [%d] (%c%c%c)",
event->parameters,
status & DEPEVT_STATUS_SHORT ? 'S' : 's',
status & DEPEVT_STATUS_IOC ? 'I' : 'i',
status & DEPEVT_STATUS_LST ? 'M' : 'm');
break;
case DWC3_DEPEVT_XFERNOTREADY:
- len = strlen(str);
-
- snprintf(str + len, size - len, "Transfer Not Ready [%d]%s",
+ len += scnprintf(str + len, size - len,
+ "Transfer Not Ready [%d]%s",
event->parameters,
status & DEPEVT_STATUS_TRANSFER_ACTIVE ?
" (Active)" : " (Not Active)");
- len = strlen(str);
-
/* Control Endpoints */
if (epnum <= 1) {
int phase = DEPEVT_STATUS_CONTROL_PHASE(event->status);
switch (phase) {
case DEPEVT_STATUS_CONTROL_DATA:
- snprintf(str + ret, size - ret,
+ scnprintf(str + len, size - len,
" [Data Phase]");
break;
case DEPEVT_STATUS_CONTROL_STATUS:
- snprintf(str + ret, size - ret,
+ scnprintf(str + len, size - len,
" [Status Phase]");
}
}
break;
case DWC3_DEPEVT_RXTXFIFOEVT:
- snprintf(str + ret, size - ret, "FIFO");
+ scnprintf(str + len, size - len, "FIFO");
break;
case DWC3_DEPEVT_STREAMEVT:
status = event->status;
switch (status) {
case DEPEVT_STREAMEVT_FOUND:
- snprintf(str + ret, size - ret, " Stream %d Found",
+ scnprintf(str + len, size - len, " Stream %d Found",
event->parameters);
break;
case DEPEVT_STREAMEVT_NOTFOUND:
default:
- snprintf(str + ret, size - ret, " Stream Not Found");
+ scnprintf(str + len, size - len, " Stream Not Found");
break;
}
break;
case DWC3_DEPEVT_EPCMDCMPLT:
- snprintf(str + ret, size - ret, "Endpoint Command Complete");
+ scnprintf(str + len, size - len, "Endpoint Command Complete");
break;
default:
- snprintf(str, size, "UNKNOWN");
+ scnprintf(str + len, size - len, "UNKNOWN");
}
return str;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 037/135] scsi: Revert "target/core: Inline transport_lun_remove_cmd()"
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (35 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 036/135] usb: dwc3: debug: fix string position formatting mixup with ret and len Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 038/135] staging: rtl8188eu: Fix potential security hole Greg Kroah-Hartman
` (101 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Pavel Zakharov, Mike Christie,
Bart Van Assche, Martin K. Petersen
From: Bart Van Assche <bvanassche@acm.org>
commit c14335ebb92a98646ddbf447e6cacc66de5269ad upstream.
Commit 83f85b8ec305 postponed the percpu_ref_put(&se_cmd->se_lun->lun_ref)
call from command completion to the time when the final command reference
is dropped. That approach is not compatible with the iSCSI target driver
because the iSCSI target driver keeps the command with the highest stat_sn
after it has completed until the next command is received (see also
iscsit_ack_from_expstatsn()). Fix this regression by reverting commit
83f85b8ec305.
Fixes: 83f85b8ec305 ("scsi: target/core: Inline transport_lun_remove_cmd()")
Cc: Pavel Zakharov <pavel.zakharov@delphix.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210051202.12934-1-bvanassche@acm.org
Reported-by: Pavel Zakharov <pavel.zakharov@delphix.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/target/target_core_transport.c | 31 ++++++++++++++++++++++++++++---
1 file changed, 28 insertions(+), 3 deletions(-)
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -666,6 +666,11 @@ static int transport_cmd_check_stop_to_f
target_remove_from_state_list(cmd);
+ /*
+ * Clear struct se_cmd->se_lun before the handoff to FE.
+ */
+ cmd->se_lun = NULL;
+
spin_lock_irqsave(&cmd->t_state_lock, flags);
/*
* Determine if frontend context caller is requesting the stopping of
@@ -693,6 +698,17 @@ static int transport_cmd_check_stop_to_f
return cmd->se_tfo->check_stop_free(cmd);
}
+static void transport_lun_remove_cmd(struct se_cmd *cmd)
+{
+ struct se_lun *lun = cmd->se_lun;
+
+ if (!lun)
+ return;
+
+ if (cmpxchg(&cmd->lun_ref_active, true, false))
+ percpu_ref_put(&lun->lun_ref);
+}
+
static void target_complete_failure_work(struct work_struct *work)
{
struct se_cmd *cmd = container_of(work, struct se_cmd, work);
@@ -783,6 +799,8 @@ static void target_handle_abort(struct s
WARN_ON_ONCE(kref_read(&cmd->cmd_kref) == 0);
+ transport_lun_remove_cmd(cmd);
+
transport_cmd_check_stop_to_fabric(cmd);
}
@@ -1695,6 +1713,7 @@ static void target_complete_tmr_failure(
se_cmd->se_tmr_req->response = TMR_LUN_DOES_NOT_EXIST;
se_cmd->se_tfo->queue_tm_rsp(se_cmd);
+ transport_lun_remove_cmd(se_cmd);
transport_cmd_check_stop_to_fabric(se_cmd);
}
@@ -1885,6 +1904,7 @@ void transport_generic_request_failure(s
goto queue_full;
check_stop:
+ transport_lun_remove_cmd(cmd);
transport_cmd_check_stop_to_fabric(cmd);
return;
@@ -2182,6 +2202,7 @@ queue_status:
transport_handle_queue_full(cmd, cmd->se_dev, ret, false);
return;
}
+ transport_lun_remove_cmd(cmd);
transport_cmd_check_stop_to_fabric(cmd);
}
@@ -2276,6 +2297,7 @@ static void target_complete_ok_work(stru
if (ret)
goto queue_full;
+ transport_lun_remove_cmd(cmd);
transport_cmd_check_stop_to_fabric(cmd);
return;
}
@@ -2301,6 +2323,7 @@ static void target_complete_ok_work(stru
if (ret)
goto queue_full;
+ transport_lun_remove_cmd(cmd);
transport_cmd_check_stop_to_fabric(cmd);
return;
}
@@ -2336,6 +2359,7 @@ queue_rsp:
if (ret)
goto queue_full;
+ transport_lun_remove_cmd(cmd);
transport_cmd_check_stop_to_fabric(cmd);
return;
}
@@ -2371,6 +2395,7 @@ queue_status:
break;
}
+ transport_lun_remove_cmd(cmd);
transport_cmd_check_stop_to_fabric(cmd);
return;
@@ -2697,6 +2722,9 @@ int transport_generic_free_cmd(struct se
*/
if (cmd->state_active)
target_remove_from_state_list(cmd);
+
+ if (cmd->se_lun)
+ transport_lun_remove_cmd(cmd);
}
if (aborted)
cmd->free_compl = &compl;
@@ -2768,9 +2796,6 @@ static void target_release_cmd_kref(stru
struct completion *abrt_compl = se_cmd->abrt_compl;
unsigned long flags;
- if (se_cmd->lun_ref_active)
- percpu_ref_put(&se_cmd->se_lun->lun_ref);
-
if (se_sess) {
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
list_del_init(&se_cmd->se_cmd_list);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 038/135] staging: rtl8188eu: Fix potential security hole
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (36 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 037/135] scsi: Revert "target/core: Inline transport_lun_remove_cmd()" Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 039/135] staging: rtl8188eu: Fix potential overuse of kernel memory Greg Kroah-Hartman
` (100 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Pietro Oliva, Larry Finger
From: Larry Finger <Larry.Finger@lwfinger.net>
commit 499c405b2b80bb3a04425ba3541d20305e014d3e upstream.
In routine rtw_hostapd_ioctl(), the user-controlled p->length is assumed
to be at least the size of struct ieee_param size, but this assumption is
never checked. This could result in out-of-bounds read/write on kernel
heap in case a p->length less than the size of struct ieee_param is
specified by the user. If p->length is allowed to be greater than the size
of the struct, then a malicious user could be wasting kernel memory.
Fixes commit a2c60d42d97c ("Add files for new driver - part 16").
Reported by: Pietro Oliva <pietroliva@gmail.com>
Cc: Pietro Oliva <pietroliva@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Fixes: a2c60d42d97c ("staging: r8188eu: Add files for new driver - part 16")
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20200210180235.21691-2-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -2812,7 +2812,7 @@ static int rtw_hostapd_ioctl(struct net_
goto out;
}
- if (!p->pointer) {
+ if (!p->pointer || p->length != sizeof(struct ieee_param)) {
ret = -EINVAL;
goto out;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 039/135] staging: rtl8188eu: Fix potential overuse of kernel memory
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (37 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 038/135] staging: rtl8188eu: Fix potential security hole Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 040/135] staging: rtl8723bs: Fix potential security hole Greg Kroah-Hartman
` (99 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Pietro Oliva, Larry Finger
From: Larry Finger <Larry.Finger@lwfinger.net>
commit 4ddf8ab8d15ddbc52eefb44eb64e38466ce1f70f upstream.
In routine wpa_supplicant_ioctl(), the user-controlled p->length is
checked to be at least the size of struct ieee_param size, but the code
does not detect the case where p->length is greater than the size
of the struct, thus a malicious user could be wasting kernel memory.
Fixes commit a2c60d42d97c ("Add files for new driver - part 16").
Reported by: Pietro Oliva <pietroliva@gmail.com>
Cc: Pietro Oliva <pietroliva@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Fixes commit a2c60d42d97c ("Add files for new driver - part 16").
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20200210180235.21691-4-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -2025,7 +2025,7 @@ static int wpa_supplicant_ioctl(struct n
struct ieee_param *param;
uint ret = 0;
- if (p->length < sizeof(struct ieee_param) || !p->pointer) {
+ if (!p->pointer || p->length != sizeof(struct ieee_param)) {
ret = -EINVAL;
goto out;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 040/135] staging: rtl8723bs: Fix potential security hole
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (38 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 039/135] staging: rtl8188eu: Fix potential overuse of kernel memory Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 041/135] staging: rtl8723bs: Fix potential overuse of kernel memory Greg Kroah-Hartman
` (98 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Pietro Oliva, Larry Finger
From: Larry Finger <Larry.Finger@lwfinger.net>
commit ac33597c0c0d1d819dccfe001bcd0acef7107e7c upstream.
In routine rtw_hostapd_ioctl(), the user-controlled p->length is assumed
to be at least the size of struct ieee_param size, but this assumption is
never checked. This could result in out-of-bounds read/write on kernel
heap in case a p->length less than the size of struct ieee_param is
specified by the user. If p->length is allowed to be greater than the size
of the struct, then a malicious user could be wasting kernel memory.
Fixes commit 554c0a3abf216 ("0taging: Add rtl8723bs sdio wifi driver").
Reported by: Pietro Oliva <pietroliva@gmail.com>
Cc: Pietro Oliva <pietroliva@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Fixes 554c0a3abf216 ("0taging: Add rtl8723bs sdio wifi driver").
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20200210180235.21691-3-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
@@ -4213,7 +4213,7 @@ static int rtw_hostapd_ioctl(struct net_
/* if (p->length < sizeof(struct ieee_param) || !p->pointer) { */
- if (!p->pointer) {
+ if (!p->pointer || p->length != sizeof(*param)) {
ret = -EINVAL;
goto out;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 041/135] staging: rtl8723bs: Fix potential overuse of kernel memory
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (39 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 040/135] staging: rtl8723bs: Fix potential security hole Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 042/135] drm/panfrost: perfcnt: Reserve/use the AS attached to the perfcnt MMU context Greg Kroah-Hartman
` (97 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Pietro Oliva, Larry Finger
From: Larry Finger <Larry.Finger@lwfinger.net>
commit 23954cb078febfc63a755301fe77e06bccdb4d2a upstream.
In routine wpa_supplicant_ioctl(), the user-controlled p->length is
checked to be at least the size of struct ieee_param size, but the code
does not detect the case where p->length is greater than the size
of the struct, thus a malicious user could be wasting kernel memory.
Fixes commit 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver").
Reported by: Pietro Oliva <pietroliva@gmail.com>
Cc: Pietro Oliva <pietroliva@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Fixes: 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver").
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20200210180235.21691-5-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
@@ -3379,7 +3379,7 @@ static int wpa_supplicant_ioctl(struct n
/* down(&ieee->wx_sem); */
- if (p->length < sizeof(struct ieee_param) || !p->pointer) {
+ if (!p->pointer || p->length != sizeof(struct ieee_param)) {
ret = -EINVAL;
goto out;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 042/135] drm/panfrost: perfcnt: Reserve/use the AS attached to the perfcnt MMU context
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (40 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 041/135] staging: rtl8723bs: Fix potential overuse of kernel memory Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 043/135] powerpc/8xx: Fix clearing of bits 20-23 in ITLB miss Greg Kroah-Hartman
` (96 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Antonio Caggiano, Boris Brezillon,
Steven Price, Rob Herring
From: Boris Brezillon <boris.brezillon@collabora.com>
commit dde2bb2da01e96c17f0a44b4a3cf72a30e66e3ef upstream.
We need to use the AS attached to the opened FD when dumping counters.
Reported-by: Antonio Caggiano <antonio.caggiano@collabora.com>
Fixes: 7282f7645d06 ("drm/panfrost: Implement per FD address spaces")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Tested-by: Antonio Caggiano <antonio.caggiano@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200206141327.446127-1-boris.brezillon@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/panfrost/panfrost_mmu.c | 7 ++++++-
drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 11 ++++-------
2 files changed, 10 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -151,7 +151,12 @@ u32 panfrost_mmu_as_get(struct panfrost_
as = mmu->as;
if (as >= 0) {
int en = atomic_inc_return(&mmu->as_count);
- WARN_ON(en >= NUM_JOB_SLOTS);
+
+ /*
+ * AS can be retained by active jobs or a perfcnt context,
+ * hence the '+ 1' here.
+ */
+ WARN_ON(en >= (NUM_JOB_SLOTS + 1));
list_move(&mmu->list, &pfdev->as_lru_list);
goto out;
--- a/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
+++ b/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
@@ -73,7 +73,7 @@ static int panfrost_perfcnt_enable_locke
struct panfrost_file_priv *user = file_priv->driver_priv;
struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
struct drm_gem_shmem_object *bo;
- u32 cfg;
+ u32 cfg, as;
int ret;
if (user == perfcnt->user)
@@ -126,12 +126,8 @@ static int panfrost_perfcnt_enable_locke
perfcnt->user = user;
- /*
- * Always use address space 0 for now.
- * FIXME: this needs to be updated when we start using different
- * address space.
- */
- cfg = GPU_PERFCNT_CFG_AS(0) |
+ as = panfrost_mmu_as_get(pfdev, perfcnt->mapping->mmu);
+ cfg = GPU_PERFCNT_CFG_AS(as) |
GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_MANUAL);
/*
@@ -195,6 +191,7 @@ static int panfrost_perfcnt_disable_lock
drm_gem_shmem_vunmap(&perfcnt->mapping->obj->base.base, perfcnt->buf);
perfcnt->buf = NULL;
panfrost_gem_close(&perfcnt->mapping->obj->base.base, file_priv);
+ panfrost_mmu_as_put(pfdev, perfcnt->mapping->mmu);
panfrost_gem_mapping_put(perfcnt->mapping);
perfcnt->mapping = NULL;
pm_runtime_mark_last_busy(pfdev->dev);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 043/135] powerpc/8xx: Fix clearing of bits 20-23 in ITLB miss
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (41 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 042/135] drm/panfrost: perfcnt: Reserve/use the AS attached to the perfcnt MMU context Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 044/135] powerpc/eeh: Fix deadlock handling dead PHB Greg Kroah-Hartman
` (95 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Christophe Leroy, Leonardo Bras,
Michael Ellerman
From: Christophe Leroy <christophe.leroy@c-s.fr>
commit a4031afb9d10d97f4d0285844abbc0ab04245304 upstream.
In ITLB miss handled the line supposed to clear bits 20-23 on the L2
ITLB entry is buggy and does indeed nothing, leading to undefined
value which could allow execution when it shouldn't.
Properly do the clearing with the relevant instruction.
Fixes: 74fabcadfd43 ("powerpc/8xx: don't use r12/SPRN_SPRG_SCRATCH2 in TLB Miss handlers")
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Leonardo Bras <leonardo@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4f70c2778163affce8508a210f65d140e84524b4.1581272050.git.christophe.leroy@c-s.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/kernel/head_8xx.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -289,7 +289,7 @@ InstructionTLBMiss:
* set. All other Linux PTE bits control the behavior
* of the MMU.
*/
- rlwimi r10, r10, 0, 0x0f00 /* Clear bits 20-23 */
+ rlwinm r10, r10, 0, ~0x0f00 /* Clear bits 20-23 */
rlwimi r10, r10, 4, 0x0400 /* Copy _PAGE_EXEC into bit 21 */
ori r10, r10, RPN_PATTERN | 0x200 /* Set 22 and 24-27 */
mtspr SPRN_MI_RPN, r10 /* Update TLB entry */
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 044/135] powerpc/eeh: Fix deadlock handling dead PHB
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (42 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 043/135] powerpc/8xx: Fix clearing of bits 20-23 in ITLB miss Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 045/135] powerpc/tm: Fix clearing MSR[TS] in current when reclaiming on signal delivery Greg Kroah-Hartman
` (94 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Sam Bobroff, Frederic Barrat,
Michael Ellerman
From: Sam Bobroff <sbobroff@linux.ibm.com>
commit d4f194ed9eb9841a8f978710e4d24296f791a85b upstream.
Recovering a dead PHB can currently cause a deadlock as the PCI
rescan/remove lock is taken twice.
This is caused as part of an existing bug in
eeh_handle_special_event(). The pe is processed while traversing the
PHBs even though the pe is unrelated to the loop. This causes the pe
to be, incorrectly, processed more than once.
Untangling this section can move the pe processing out of the loop and
also outside the locked section, correcting both problems.
Fixes: 2e25505147b8 ("powerpc/eeh: Fix crash when edev->pdev changes")
Cc: stable@vger.kernel.org # 5.4+
Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Tested-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0547e82dbf90ee0729a2979a8cac5c91665c621f.1581051445.git.sbobroff@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/kernel/eeh_driver.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -1200,6 +1200,17 @@ void eeh_handle_special_event(void)
eeh_pe_state_mark(pe, EEH_PE_RECOVERING);
eeh_handle_normal_event(pe);
} else {
+ eeh_for_each_pe(pe, tmp_pe)
+ eeh_pe_for_each_dev(tmp_pe, edev, tmp_edev)
+ edev->mode &= ~EEH_DEV_NO_HANDLER;
+
+ /* Notify all devices to be down */
+ eeh_pe_state_clear(pe, EEH_PE_PRI_BUS, true);
+ eeh_set_channel_state(pe, pci_channel_io_perm_failure);
+ eeh_pe_report(
+ "error_detected(permanent failure)", pe,
+ eeh_report_failure, NULL);
+
pci_lock_rescan_remove();
list_for_each_entry(hose, &hose_list, list_node) {
phb_pe = eeh_phb_pe_get(hose);
@@ -1208,16 +1219,6 @@ void eeh_handle_special_event(void)
(phb_pe->state & EEH_PE_RECOVERING))
continue;
- eeh_for_each_pe(pe, tmp_pe)
- eeh_pe_for_each_dev(tmp_pe, edev, tmp_edev)
- edev->mode &= ~EEH_DEV_NO_HANDLER;
-
- /* Notify all devices to be down */
- eeh_pe_state_clear(pe, EEH_PE_PRI_BUS, true);
- eeh_set_channel_state(pe, pci_channel_io_perm_failure);
- eeh_pe_report(
- "error_detected(permanent failure)", pe,
- eeh_report_failure, NULL);
bus = eeh_pe_bus_get(phb_pe);
if (!bus) {
pr_err("%s: Cannot find PCI bus for "
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 045/135] powerpc/tm: Fix clearing MSR[TS] in current when reclaiming on signal delivery
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (43 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 044/135] powerpc/eeh: Fix deadlock handling dead PHB Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 046/135] powerpc/entry: Fix an #if which should be an #ifdef in entry_32.S Greg Kroah-Hartman
` (93 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Gustavo Luiz Duarte, Michael Neuling,
Michael Ellerman
From: Gustavo Luiz Duarte <gustavold@linux.ibm.com>
commit 2464cc4c345699adea52c7aef75707207cb8a2f6 upstream.
After a treclaim, we expect to be in non-transactional state. If we
don't clear the current thread's MSR[TS] before we get preempted, then
tm_recheckpoint_new_task() will recheckpoint and we get rescheduled in
suspended transaction state.
When handling a signal caught in transactional state,
handle_rt_signal64() calls get_tm_stackpointer() that treclaims the
transaction using tm_reclaim_current() but without clearing the
thread's MSR[TS]. This can cause the TM Bad Thing exception below if
later we pagefault and get preempted trying to access the user's
sigframe, using __put_user(). Afterwards, when we are rescheduled back
into do_page_fault() (but now in suspended state since the thread's
MSR[TS] was not cleared), upon executing 'rfid' after completion of
the page fault handling, the exception is raised because a transition
from suspended to non-transactional state is invalid.
Unexpected TM Bad Thing exception at c00000000000de44 (msr 0x8000000302a03031) tm_scratch=800000010280b033
Oops: Unrecoverable exception, sig: 6 [#1]
LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
CPU: 25 PID: 15547 Comm: a.out Not tainted 5.4.0-rc2 #32
NIP: c00000000000de44 LR: c000000000034728 CTR: 0000000000000000
REGS: c00000003fe7bd70 TRAP: 0700 Not tainted (5.4.0-rc2)
MSR: 8000000302a03031 <SF,VEC,VSX,FP,ME,IR,DR,LE,TM[SE]> CR: 44000884 XER: 00000000
CFAR: c00000000000dda4 IRQMASK: 0
PACATMSCRATCH: 800000010280b033
GPR00: c000000000034728 c000000f65a17c80 c000000001662800 00007fffacf3fd78
GPR04: 0000000000001000 0000000000001000 0000000000000000 c000000f611f8af0
GPR08: 0000000000000000 0000000078006001 0000000000000000 000c000000000000
GPR12: c000000f611f84b0 c00000003ffcb200 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 c000000f611f8140
GPR24: 0000000000000000 00007fffacf3fd68 c000000f65a17d90 c000000f611f7800
GPR28: c000000f65a17e90 c000000f65a17e90 c000000001685e18 00007fffacf3f000
NIP [c00000000000de44] fast_exception_return+0xf4/0x1b0
LR [c000000000034728] handle_rt_signal64+0x78/0xc50
Call Trace:
[c000000f65a17c80] [c000000000034710] handle_rt_signal64+0x60/0xc50 (unreliable)
[c000000f65a17d30] [c000000000023640] do_notify_resume+0x330/0x460
[c000000f65a17e20] [c00000000000dcc4] ret_from_except_lite+0x70/0x74
Instruction dump:
7c4ff120 e8410170 7c5a03a6 38400000 f8410060 e8010070 e8410080 e8610088
60000000 60000000 e8810090 e8210078 <4c000024> 48000000 e8610178 88ed0989
---[ end trace 93094aa44b442f87 ]---
The simplified sequence of events that triggers the above exception is:
... # userspace in NON-TRANSACTIONAL state
tbegin # userspace in TRANSACTIONAL state
signal delivery # kernelspace in SUSPENDED state
handle_rt_signal64()
get_tm_stackpointer()
treclaim # kernelspace in NON-TRANSACTIONAL state
__put_user()
page fault happens. We will never get back here because of the TM Bad Thing exception.
page fault handling kicks in and we voluntarily preempt ourselves
do_page_fault()
__schedule()
__switch_to(other_task)
our task is rescheduled and we recheckpoint because the thread's MSR[TS] was not cleared
__switch_to(our_task)
switch_to_tm()
tm_recheckpoint_new_task()
trechkpt # kernelspace in SUSPENDED state
The page fault handling resumes, but now we are in suspended transaction state
do_page_fault() completes
rfid <----- trying to get back where the page fault happened (we were non-transactional back then)
TM Bad Thing # illegal transition from suspended to non-transactional
This patch fixes that issue by clearing the current thread's MSR[TS]
just after treclaim in get_tm_stackpointer() so that we stay in
non-transactional state in case we are preempted. In order to make
treclaim and clearing the thread's MSR[TS] atomic from a preemption
perspective when CONFIG_PREEMPT is set, preempt_disable/enable() is
used. It's also necessary to save the previous value of the thread's
MSR before get_tm_stackpointer() is called so that it can be exposed
to the signal handler later in setup_tm_sigcontexts() to inform the
userspace MSR at the moment of the signal delivery.
Found with tm-signal-context-force-tm kernel selftest.
Fixes: 2b0a576d15e0 ("powerpc: Add new transactional memory state to the signal context")
Cc: stable@vger.kernel.org # v3.9
Signed-off-by: Gustavo Luiz Duarte <gustavold@linux.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200211033831.11165-1-gustavold@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/kernel/signal.c | 17 +++++++++++++++--
arch/powerpc/kernel/signal_32.c | 28 ++++++++++++++--------------
arch/powerpc/kernel/signal_64.c | 22 ++++++++++------------
3 files changed, 39 insertions(+), 28 deletions(-)
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -200,14 +200,27 @@ unsigned long get_tm_stackpointer(struct
* normal/non-checkpointed stack pointer.
*/
+ unsigned long ret = tsk->thread.regs->gpr[1];
+
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
BUG_ON(tsk != current);
if (MSR_TM_ACTIVE(tsk->thread.regs->msr)) {
+ preempt_disable();
tm_reclaim_current(TM_CAUSE_SIGNAL);
if (MSR_TM_TRANSACTIONAL(tsk->thread.regs->msr))
- return tsk->thread.ckpt_regs.gpr[1];
+ ret = tsk->thread.ckpt_regs.gpr[1];
+
+ /*
+ * If we treclaim, we must clear the current thread's TM bits
+ * before re-enabling preemption. Otherwise we might be
+ * preempted and have the live MSR[TS] changed behind our back
+ * (tm_recheckpoint_new_task() would recheckpoint). Besides, we
+ * enter the signal handler in non-transactional state.
+ */
+ tsk->thread.regs->msr &= ~MSR_TS_MASK;
+ preempt_enable();
}
#endif
- return tsk->thread.regs->gpr[1];
+ return ret;
}
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -489,19 +489,11 @@ static int save_user_regs(struct pt_regs
*/
static int save_tm_user_regs(struct pt_regs *regs,
struct mcontext __user *frame,
- struct mcontext __user *tm_frame, int sigret)
+ struct mcontext __user *tm_frame, int sigret,
+ unsigned long msr)
{
- unsigned long msr = regs->msr;
-
WARN_ON(tm_suspend_disabled);
- /* Remove TM bits from thread's MSR. The MSR in the sigcontext
- * just indicates to userland that we were doing a transaction, but we
- * don't want to return in transactional state. This also ensures
- * that flush_fp_to_thread won't set TIF_RESTORE_TM again.
- */
- regs->msr &= ~MSR_TS_MASK;
-
/* Save both sets of general registers */
if (save_general_regs(¤t->thread.ckpt_regs, frame)
|| save_general_regs(regs, tm_frame))
@@ -912,6 +904,10 @@ int handle_rt_signal32(struct ksignal *k
int sigret;
unsigned long tramp;
struct pt_regs *regs = tsk->thread.regs;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ /* Save the thread's msr before get_tm_stackpointer() changes it */
+ unsigned long msr = regs->msr;
+#endif
BUG_ON(tsk != current);
@@ -944,13 +940,13 @@ int handle_rt_signal32(struct ksignal *k
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
tm_frame = &rt_sf->uc_transact.uc_mcontext;
- if (MSR_TM_ACTIVE(regs->msr)) {
+ if (MSR_TM_ACTIVE(msr)) {
if (__put_user((unsigned long)&rt_sf->uc_transact,
&rt_sf->uc.uc_link) ||
__put_user((unsigned long)tm_frame,
&rt_sf->uc_transact.uc_regs))
goto badframe;
- if (save_tm_user_regs(regs, frame, tm_frame, sigret))
+ if (save_tm_user_regs(regs, frame, tm_frame, sigret, msr))
goto badframe;
}
else
@@ -1369,6 +1365,10 @@ int handle_signal32(struct ksignal *ksig
int sigret;
unsigned long tramp;
struct pt_regs *regs = tsk->thread.regs;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ /* Save the thread's msr before get_tm_stackpointer() changes it */
+ unsigned long msr = regs->msr;
+#endif
BUG_ON(tsk != current);
@@ -1402,9 +1402,9 @@ int handle_signal32(struct ksignal *ksig
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
tm_mctx = &frame->mctx_transact;
- if (MSR_TM_ACTIVE(regs->msr)) {
+ if (MSR_TM_ACTIVE(msr)) {
if (save_tm_user_regs(regs, &frame->mctx, &frame->mctx_transact,
- sigret))
+ sigret, msr))
goto badframe;
}
else
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -192,7 +192,8 @@ static long setup_sigcontext(struct sigc
static long setup_tm_sigcontexts(struct sigcontext __user *sc,
struct sigcontext __user *tm_sc,
struct task_struct *tsk,
- int signr, sigset_t *set, unsigned long handler)
+ int signr, sigset_t *set, unsigned long handler,
+ unsigned long msr)
{
/* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
* process never used altivec yet (MSR_VEC is zero in pt_regs of
@@ -207,12 +208,11 @@ static long setup_tm_sigcontexts(struct
elf_vrreg_t __user *tm_v_regs = sigcontext_vmx_regs(tm_sc);
#endif
struct pt_regs *regs = tsk->thread.regs;
- unsigned long msr = tsk->thread.regs->msr;
long err = 0;
BUG_ON(tsk != current);
- BUG_ON(!MSR_TM_ACTIVE(regs->msr));
+ BUG_ON(!MSR_TM_ACTIVE(msr));
WARN_ON(tm_suspend_disabled);
@@ -222,13 +222,6 @@ static long setup_tm_sigcontexts(struct
*/
msr |= tsk->thread.ckpt_regs.msr & (MSR_FP | MSR_VEC | MSR_VSX);
- /* Remove TM bits from thread's MSR. The MSR in the sigcontext
- * just indicates to userland that we were doing a transaction, but we
- * don't want to return in transactional state. This also ensures
- * that flush_fp_to_thread won't set TIF_RESTORE_TM again.
- */
- regs->msr &= ~MSR_TS_MASK;
-
#ifdef CONFIG_ALTIVEC
err |= __put_user(v_regs, &sc->v_regs);
err |= __put_user(tm_v_regs, &tm_sc->v_regs);
@@ -824,6 +817,10 @@ int handle_rt_signal64(struct ksignal *k
unsigned long newsp = 0;
long err = 0;
struct pt_regs *regs = tsk->thread.regs;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ /* Save the thread's msr before get_tm_stackpointer() changes it */
+ unsigned long msr = regs->msr;
+#endif
BUG_ON(tsk != current);
@@ -841,7 +838,7 @@ int handle_rt_signal64(struct ksignal *k
err |= __put_user(0, &frame->uc.uc_flags);
err |= __save_altstack(&frame->uc.uc_stack, regs->gpr[1]);
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
- if (MSR_TM_ACTIVE(regs->msr)) {
+ if (MSR_TM_ACTIVE(msr)) {
/* The ucontext_t passed to userland points to the second
* ucontext_t (for transactional state) with its uc_link ptr.
*/
@@ -849,7 +846,8 @@ int handle_rt_signal64(struct ksignal *k
err |= setup_tm_sigcontexts(&frame->uc.uc_mcontext,
&frame->uc_transact.uc_mcontext,
tsk, ksig->sig, NULL,
- (unsigned long)ksig->ka.sa.sa_handler);
+ (unsigned long)ksig->ka.sa.sa_handler,
+ msr);
} else
#endif
{
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 046/135] powerpc/entry: Fix an #if which should be an #ifdef in entry_32.S
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (44 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 045/135] powerpc/tm: Fix clearing MSR[TS] in current when reclaiming on signal delivery Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 047/135] powerpc/hugetlb: Fix 512k hugepages on 8xx with 16k page size Greg Kroah-Hartman
` (92 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Christophe Leroy, Michael Ellerman
From: Christophe Leroy <christophe.leroy@c-s.fr>
commit 9eb425b2e04e0e3006adffea5bf5f227a896f128 upstream.
Fixes: 12c3f1fd87bf ("powerpc/32s: get rid of CPU_FTR_601 feature")
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a99fc0ad65b87a1ba51cfa3e0e9034ee294c3e07.1582034961.git.christophe.leroy@c-s.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/kernel/entry_32.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -778,7 +778,7 @@ fast_exception_return:
1: lis r3,exc_exit_restart_end@ha
addi r3,r3,exc_exit_restart_end@l
cmplw r12,r3
-#if CONFIG_PPC_BOOK3S_601
+#ifdef CONFIG_PPC_BOOK3S_601
bge 2b
#else
bge 3f
@@ -786,7 +786,7 @@ fast_exception_return:
lis r4,exc_exit_restart@ha
addi r4,r4,exc_exit_restart@l
cmplw r12,r4
-#if CONFIG_PPC_BOOK3S_601
+#ifdef CONFIG_PPC_BOOK3S_601
blt 2b
#else
blt 3f
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 047/135] powerpc/hugetlb: Fix 512k hugepages on 8xx with 16k page size
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (45 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 046/135] powerpc/entry: Fix an #if which should be an #ifdef in entry_32.S Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 048/135] powerpc/hugetlb: Fix 8M hugepages on 8xx Greg Kroah-Hartman
` (91 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Christophe Leroy, Michael Ellerman
From: Christophe Leroy <christophe.leroy@c-s.fr>
commit f2b67ef90b0d5eca0f2255e02cf2f620bc0ddcdb upstream.
Commit 55c8fc3f4930 ("powerpc/8xx: reintroduce 16K pages with HW
assistance") redefined pte_t as a struct of 4 pte_basic_t, because
in 16K pages mode there are four identical entries in the
page table. But the size of hugepage tables is calculated based
of the size of (void *). Therefore, we end up with page tables
of size 1k instead of 4k for 512k pages.
As 512k hugepage tables are the same size as standard page tables,
ie 4k, use the standard page tables instead of PGT_CACHE tables.
Fixes: 3fb69c6a1a13 ("powerpc/8xx: Enable 512k hugepage support with HW assistance")
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/90ec56a2315be602494619ed0223bba3b0b8d619.1580997007.git.christophe.leroy@c-s.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/mm/hugetlbpage.c | 29 ++++++++++++++++++-----------
1 file changed, 18 insertions(+), 11 deletions(-)
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -53,20 +53,24 @@ static int __hugepte_alloc(struct mm_str
if (pshift >= pdshift) {
cachep = PGT_CACHE(PTE_T_ORDER);
num_hugepd = 1 << (pshift - pdshift);
+ new = NULL;
} else if (IS_ENABLED(CONFIG_PPC_8xx)) {
- cachep = PGT_CACHE(PTE_INDEX_SIZE);
+ cachep = NULL;
num_hugepd = 1;
+ new = pte_alloc_one(mm);
} else {
cachep = PGT_CACHE(pdshift - pshift);
num_hugepd = 1;
+ new = NULL;
}
- if (!cachep) {
+ if (!cachep && !new) {
WARN_ONCE(1, "No page table cache created for hugetlb tables");
return -ENOMEM;
}
- new = kmem_cache_alloc(cachep, pgtable_gfp_flags(mm, GFP_KERNEL));
+ if (cachep)
+ new = kmem_cache_alloc(cachep, pgtable_gfp_flags(mm, GFP_KERNEL));
BUG_ON(pshift > HUGEPD_SHIFT_MASK);
BUG_ON((unsigned long)new & HUGEPD_SHIFT_MASK);
@@ -97,7 +101,10 @@ static int __hugepte_alloc(struct mm_str
if (i < num_hugepd) {
for (i = i - 1 ; i >= 0; i--, hpdp--)
*hpdp = __hugepd(0);
- kmem_cache_free(cachep, new);
+ if (cachep)
+ kmem_cache_free(cachep, new);
+ else
+ pte_free(mm, new);
} else {
kmemleak_ignore(new);
}
@@ -324,8 +331,7 @@ static void free_hugepd_range(struct mmu
if (shift >= pdshift)
hugepd_free(tlb, hugepte);
else if (IS_ENABLED(CONFIG_PPC_8xx))
- pgtable_free_tlb(tlb, hugepte,
- get_hugepd_cache_index(PTE_INDEX_SIZE));
+ pgtable_free_tlb(tlb, hugepte, 0);
else
pgtable_free_tlb(tlb, hugepte,
get_hugepd_cache_index(pdshift - shift));
@@ -639,12 +645,13 @@ static int __init hugetlbpage_init(void)
* if we have pdshift and shift value same, we don't
* use pgt cache for hugepd.
*/
- if (pdshift > shift && IS_ENABLED(CONFIG_PPC_8xx))
- pgtable_cache_add(PTE_INDEX_SIZE);
- else if (pdshift > shift)
- pgtable_cache_add(pdshift - shift);
- else if (IS_ENABLED(CONFIG_PPC_FSL_BOOK3E) || IS_ENABLED(CONFIG_PPC_8xx))
+ if (pdshift > shift) {
+ if (!IS_ENABLED(CONFIG_PPC_8xx))
+ pgtable_cache_add(pdshift - shift);
+ } else if (IS_ENABLED(CONFIG_PPC_FSL_BOOK3E) ||
+ IS_ENABLED(CONFIG_PPC_8xx)) {
pgtable_cache_add(PTE_T_ORDER);
+ }
configured = true;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 048/135] powerpc/hugetlb: Fix 8M hugepages on 8xx
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (46 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 047/135] powerpc/hugetlb: Fix 512k hugepages on 8xx with 16k page size Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 049/135] arm64: memory: Add missing brackets to untagged_addr() macro Greg Kroah-Hartman
` (90 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Christophe Leroy, Michael Ellerman
From: Christophe Leroy <christophe.leroy@c-s.fr>
commit 50a175dd18de7a647e72aca7daf4744e3a5a81e3 upstream.
With HW assistance all page tables must be 4k aligned, the 8xx drops
the last 12 bits during the walk.
Redefine HUGEPD_SHIFT_MASK to mask last 12 bits out. HUGEPD_SHIFT_MASK
is used to for alignment of page table cache.
Fixes: 22569b881d37 ("powerpc/8xx: Enable 8M hugepage support with HW assistance")
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/778b1a248c4c7ca79640eeff7740044da6a220a0.1581264115.git.christophe.leroy@c-s.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/include/asm/page.h | 5 +++++
1 file changed, 5 insertions(+)
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -295,8 +295,13 @@ static inline bool pfn_valid(unsigned lo
/*
* Some number of bits at the level of the page table that points to
* a hugepte are used to encode the size. This masks those bits.
+ * On 8xx, HW assistance requires 4k alignment for the hugepte.
*/
+#ifdef CONFIG_PPC_8xx
+#define HUGEPD_SHIFT_MASK 0xfff
+#else
#define HUGEPD_SHIFT_MASK 0x3f
+#endif
#ifndef __ASSEMBLY__
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 049/135] arm64: memory: Add missing brackets to untagged_addr() macro
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (47 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 048/135] powerpc/hugetlb: Fix 8M hugepages on 8xx Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 050/135] jbd2: fix ocfs2 corrupt when clearing block group bits Greg Kroah-Hartman
` (89 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Linus Torvalds, Will Deacon
From: Will Deacon <will@kernel.org>
commit d0022c0ef29b78bcbe8a5c5894bd2307143afce1 upstream.
Add brackets around the evaluation of the 'addr' parameter to the
untagged_addr() macro so that the cast to 'u64' applies to the result
of the expression.
Cc: <stable@vger.kernel.org>
Fixes: 597399d0cb91 ("arm64: tags: Preserve tags for addresses translated via TTBR1")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/include/asm/memory.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -219,7 +219,7 @@ static inline unsigned long kaslr_offset
((__force __typeof__(addr))sign_extend64((__force u64)(addr), 55))
#define untagged_addr(addr) ({ \
- u64 __addr = (__force u64)addr; \
+ u64 __addr = (__force u64)(addr); \
__addr &= __untagged_addr(__addr); \
(__force __typeof__(addr))__addr; \
})
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 050/135] jbd2: fix ocfs2 corrupt when clearing block group bits
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (48 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 049/135] arm64: memory: Add missing brackets to untagged_addr() macro Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 051/135] x86/ima: use correct identifier for SetupMode variable Greg Kroah-Hartman
` (88 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Yan Wang, Theodore Tso, Jun Piao,
Jan Kara, stable
From: wangyan <wangyan122@huawei.com>
commit 8eedabfd66b68a4623beec0789eac54b8c9d0fb6 upstream.
I found a NULL pointer dereference in ocfs2_block_group_clear_bits().
The running environment:
kernel version: 4.19
A cluster with two nodes, 5 luns mounted on two nodes, and do some
file operations like dd/fallocate/truncate/rm on every lun with storage
network disconnection.
The fallocate operation on dm-23-45 caused an null pointer dereference.
The information of NULL pointer dereference as follows:
[577992.878282] JBD2: Error -5 detected when updating journal superblock for dm-23-45.
[577992.878290] Aborting journal on device dm-23-45.
...
[577992.890778] JBD2: Error -5 detected when updating journal superblock for dm-24-46.
[577992.890908] __journal_remove_journal_head: freeing b_committed_data
[577992.890916] (fallocate,88392,52):ocfs2_extend_trans:474 ERROR: status = -30
[577992.890918] __journal_remove_journal_head: freeing b_committed_data
[577992.890920] (fallocate,88392,52):ocfs2_rotate_tree_right:2500 ERROR: status = -30
[577992.890922] __journal_remove_journal_head: freeing b_committed_data
[577992.890924] (fallocate,88392,52):ocfs2_do_insert_extent:4382 ERROR: status = -30
[577992.890928] (fallocate,88392,52):ocfs2_insert_extent:4842 ERROR: status = -30
[577992.890928] __journal_remove_journal_head: freeing b_committed_data
[577992.890930] (fallocate,88392,52):ocfs2_add_clusters_in_btree:4947 ERROR: status = -30
[577992.890933] __journal_remove_journal_head: freeing b_committed_data
[577992.890939] __journal_remove_journal_head: freeing b_committed_data
[577992.890949] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020
[577992.890950] Mem abort info:
[577992.890951] ESR = 0x96000004
[577992.890952] Exception class = DABT (current EL), IL = 32 bits
[577992.890952] SET = 0, FnV = 0
[577992.890953] EA = 0, S1PTW = 0
[577992.890954] Data abort info:
[577992.890955] ISV = 0, ISS = 0x00000004
[577992.890956] CM = 0, WnR = 0
[577992.890958] user pgtable: 4k pages, 48-bit VAs, pgdp = 00000000f8da07a9
[577992.890960] [0000000000000020] pgd=0000000000000000
[577992.890964] Internal error: Oops: 96000004 [#1] SMP
[577992.890965] Process fallocate (pid: 88392, stack limit = 0x00000000013db2fd)
[577992.890968] CPU: 52 PID: 88392 Comm: fallocate Kdump: loaded Tainted: G W OE 4.19.36 #1
[577992.890969] Hardware name: Huawei TaiShan 2280 V2/BC82AMDD, BIOS 0.98 08/25/2019
[577992.890971] pstate: 60400009 (nZCv daif +PAN -UAO)
[577992.891054] pc : _ocfs2_free_suballoc_bits+0x63c/0x968 [ocfs2]
[577992.891082] lr : _ocfs2_free_suballoc_bits+0x618/0x968 [ocfs2]
[577992.891084] sp : ffff0000c8e2b810
[577992.891085] x29: ffff0000c8e2b820 x28: 0000000000000000
[577992.891087] x27: 00000000000006f3 x26: ffffa07957b02e70
[577992.891089] x25: ffff807c59d50000 x24: 00000000000006f2
[577992.891091] x23: 0000000000000001 x22: ffff807bd39abc30
[577992.891093] x21: ffff0000811d9000 x20: ffffa07535d6a000
[577992.891097] x19: ffff000001681638 x18: ffffffffffffffff
[577992.891098] x17: 0000000000000000 x16: ffff000080a03df0
[577992.891100] x15: ffff0000811d9708 x14: 203d207375746174
[577992.891101] x13: 73203a524f525245 x12: 20373439343a6565
[577992.891103] x11: 0000000000000038 x10: 0101010101010101
[577992.891106] x9 : ffffa07c68a85d70 x8 : 7f7f7f7f7f7f7f7f
[577992.891109] x7 : 0000000000000000 x6 : 0000000000000080
[577992.891110] x5 : 0000000000000000 x4 : 0000000000000002
[577992.891112] x3 : ffff000001713390 x2 : 2ff90f88b1c22f00
[577992.891114] x1 : ffff807bd39abc30 x0 : 0000000000000000
[577992.891116] Call trace:
[577992.891139] _ocfs2_free_suballoc_bits+0x63c/0x968 [ocfs2]
[577992.891162] _ocfs2_free_clusters+0x100/0x290 [ocfs2]
[577992.891185] ocfs2_free_clusters+0x50/0x68 [ocfs2]
[577992.891206] ocfs2_add_clusters_in_btree+0x198/0x5e0 [ocfs2]
[577992.891227] ocfs2_add_inode_data+0x94/0xc8 [ocfs2]
[577992.891248] ocfs2_extend_allocation+0x1bc/0x7a8 [ocfs2]
[577992.891269] ocfs2_allocate_extents+0x14c/0x338 [ocfs2]
[577992.891290] __ocfs2_change_file_space+0x3f8/0x610 [ocfs2]
[577992.891309] ocfs2_fallocate+0xe4/0x128 [ocfs2]
[577992.891316] vfs_fallocate+0x11c/0x250
[577992.891317] ksys_fallocate+0x54/0x88
[577992.891319] __arm64_sys_fallocate+0x28/0x38
[577992.891323] el0_svc_common+0x78/0x130
[577992.891325] el0_svc_handler+0x38/0x78
[577992.891327] el0_svc+0x8/0xc
My analysis process as follows:
ocfs2_fallocate
__ocfs2_change_file_space
ocfs2_allocate_extents
ocfs2_extend_allocation
ocfs2_add_inode_data
ocfs2_add_clusters_in_btree
ocfs2_insert_extent
ocfs2_do_insert_extent
ocfs2_rotate_tree_right
ocfs2_extend_rotate_transaction
ocfs2_extend_trans
jbd2_journal_restart
jbd2__journal_restart
/* handle->h_transaction is NULL,
* is_handle_aborted(handle) is true
*/
handle->h_transaction = NULL;
start_this_handle
return -EROFS;
ocfs2_free_clusters
_ocfs2_free_clusters
_ocfs2_free_suballoc_bits
ocfs2_block_group_clear_bits
ocfs2_journal_access_gd
__ocfs2_journal_access
jbd2_journal_get_undo_access
/* I think jbd2_write_access_granted() will
* return true, because do_get_write_access()
* will return -EROFS.
*/
if (jbd2_write_access_granted(...)) return 0;
do_get_write_access
/* handle->h_transaction is NULL, it will
* return -EROFS here, so do_get_write_access()
* was not called.
*/
if (is_handle_aborted(handle)) return -EROFS;
/* bh2jh(group_bh) is NULL, caused NULL
pointer dereference */
undo_bg = (struct ocfs2_group_desc *)
bh2jh(group_bh)->b_committed_data;
If handle->h_transaction == NULL, then jbd2_write_access_granted()
does not really guarantee that journal_head will stay around,
not even speaking of its b_committed_data. The bh2jh(group_bh)
can be removed after ocfs2_journal_access_gd() and before call
"bh2jh(group_bh)->b_committed_data". So, we should move
is_handle_aborted() check from do_get_write_access() into
jbd2_journal_get_undo_access() and jbd2_journal_get_write_access()
before the call to jbd2_write_access_granted().
Link: https://lore.kernel.org/r/f72a623f-b3f1-381a-d91d-d22a1c83a336@huawei.com
Signed-off-by: Yan Wang <wangyan122@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jun Piao <piaojun@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/jbd2/transaction.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -865,8 +865,6 @@ do_get_write_access(handle_t *handle, st
char *frozen_buffer = NULL;
unsigned long start_lock, time_lock;
- if (is_handle_aborted(handle))
- return -EROFS;
journal = transaction->t_journal;
jbd_debug(5, "journal_head %p, force_copy %d\n", jh, force_copy);
@@ -1118,6 +1116,9 @@ int jbd2_journal_get_write_access(handle
struct journal_head *jh;
int rc;
+ if (is_handle_aborted(handle))
+ return -EROFS;
+
if (jbd2_write_access_granted(handle, bh, false))
return 0;
@@ -1255,6 +1256,9 @@ int jbd2_journal_get_undo_access(handle_
struct journal_head *jh;
char *committed_data = NULL;
+ if (is_handle_aborted(handle))
+ return -EROFS;
+
if (jbd2_write_access_granted(handle, bh, true))
return 0;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 051/135] x86/ima: use correct identifier for SetupMode variable
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (49 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 050/135] jbd2: fix ocfs2 corrupt when clearing block group bits Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 052/135] x86/mce/amd: Publish the bank pointer only after setup has succeeded Greg Kroah-Hartman
` (87 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Matthew Garrett, Ard Biesheuvel, Mimi Zohar
From: Ard Biesheuvel <ardb@kernel.org>
commit ff5ac61ee83c13f516544d29847d28be093a40ee upstream.
The IMA arch code attempts to inspect the "SetupMode" EFI variable
by populating a variable called efi_SetupMode_name with the string
"SecureBoot" and passing that to the EFI GetVariable service, which
obviously does not yield the expected result.
Given that the string is only referenced a single time, let's get
rid of the intermediate variable, and pass the correct string as
an immediate argument. While at it, do the same for "SecureBoot".
Fixes: 399574c64eaf ("x86/ima: retry detecting secure boot mode")
Fixes: 980ef4d22a95 ("x86/ima: check EFI SetupMode too")
Cc: Matthew Garrett <mjg59@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: stable@vger.kernel.org # v5.3
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/ima_arch.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/arch/x86/kernel/ima_arch.c
+++ b/arch/x86/kernel/ima_arch.c
@@ -10,8 +10,6 @@ extern struct boot_params boot_params;
static enum efi_secureboot_mode get_sb_mode(void)
{
- efi_char16_t efi_SecureBoot_name[] = L"SecureBoot";
- efi_char16_t efi_SetupMode_name[] = L"SecureBoot";
efi_guid_t efi_variable_guid = EFI_GLOBAL_VARIABLE_GUID;
efi_status_t status;
unsigned long size;
@@ -25,7 +23,7 @@ static enum efi_secureboot_mode get_sb_m
}
/* Get variable contents into buffer */
- status = efi.get_variable(efi_SecureBoot_name, &efi_variable_guid,
+ status = efi.get_variable(L"SecureBoot", &efi_variable_guid,
NULL, &size, &secboot);
if (status == EFI_NOT_FOUND) {
pr_info("ima: secureboot mode disabled\n");
@@ -38,7 +36,7 @@ static enum efi_secureboot_mode get_sb_m
}
size = sizeof(setupmode);
- status = efi.get_variable(efi_SetupMode_name, &efi_variable_guid,
+ status = efi.get_variable(L"SetupMode", &efi_variable_guid,
NULL, &size, &setupmode);
if (status != EFI_SUCCESS) /* ignore unknown SetupMode */
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 052/135] x86/mce/amd: Publish the bank pointer only after setup has succeeded
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (50 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 051/135] x86/ima: use correct identifier for SetupMode variable Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 053/135] x86/mce/amd: Fix kobject lifetime Greg Kroah-Hartman
` (86 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Saar Amar, Dan Carpenter, Borislav Petkov
From: Borislav Petkov <bp@suse.de>
commit 6e5cf31fbe651bed7ba1df768f2e123531132417 upstream.
threshold_create_bank() creates a bank descriptor per MCA error
thresholding counter which can be controlled over sysfs. It publishes
the pointer to that bank in a per-CPU variable and then goes on to
create additional thresholding blocks if the bank has such.
However, that creation of additional blocks in
allocate_threshold_blocks() can fail, leading to a use-after-free
through the per-CPU pointer.
Therefore, publish that pointer only after all blocks have been setup
successfully.
Fixes: 019f34fccfd5 ("x86, MCE, AMD: Move shared bank to node descriptor")
Reported-by: Saar Amar <Saar.Amar@microsoft.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200128140846.phctkvx5btiexvbx@kili.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/cpu/mce/amd.c | 33 ++++++++++++++++-----------------
1 file changed, 16 insertions(+), 17 deletions(-)
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -1196,8 +1196,9 @@ static const char *get_name(unsigned int
return buf_mcatype;
}
-static int allocate_threshold_blocks(unsigned int cpu, unsigned int bank,
- unsigned int block, u32 address)
+static int allocate_threshold_blocks(unsigned int cpu, struct threshold_bank *tb,
+ unsigned int bank, unsigned int block,
+ u32 address)
{
struct threshold_block *b = NULL;
u32 low, high;
@@ -1241,16 +1242,12 @@ static int allocate_threshold_blocks(uns
INIT_LIST_HEAD(&b->miscj);
- if (per_cpu(threshold_banks, cpu)[bank]->blocks) {
- list_add(&b->miscj,
- &per_cpu(threshold_banks, cpu)[bank]->blocks->miscj);
- } else {
- per_cpu(threshold_banks, cpu)[bank]->blocks = b;
- }
+ if (tb->blocks)
+ list_add(&b->miscj, &tb->blocks->miscj);
+ else
+ tb->blocks = b;
- err = kobject_init_and_add(&b->kobj, &threshold_ktype,
- per_cpu(threshold_banks, cpu)[bank]->kobj,
- get_name(bank, b));
+ err = kobject_init_and_add(&b->kobj, &threshold_ktype, tb->kobj, get_name(bank, b));
if (err)
goto out_free;
recurse:
@@ -1258,7 +1255,7 @@ recurse:
if (!address)
return 0;
- err = allocate_threshold_blocks(cpu, bank, block, address);
+ err = allocate_threshold_blocks(cpu, tb, bank, block, address);
if (err)
goto out_free;
@@ -1343,8 +1340,6 @@ static int threshold_create_bank(unsigne
goto out_free;
}
- per_cpu(threshold_banks, cpu)[bank] = b;
-
if (is_shared_bank(bank)) {
refcount_set(&b->cpus, 1);
@@ -1355,9 +1350,13 @@ static int threshold_create_bank(unsigne
}
}
- err = allocate_threshold_blocks(cpu, bank, 0, msr_ops.misc(bank));
- if (!err)
- goto out;
+ err = allocate_threshold_blocks(cpu, b, bank, 0, msr_ops.misc(bank));
+ if (err)
+ goto out_free;
+
+ per_cpu(threshold_banks, cpu)[bank] = b;
+
+ return 0;
out_free:
kfree(b);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 053/135] x86/mce/amd: Fix kobject lifetime
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (51 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 052/135] x86/mce/amd: Publish the bank pointer only after setup has succeeded Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 054/135] x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF Greg Kroah-Hartman
` (85 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Thomas Gleixner, Borislav Petkov
From: Thomas Gleixner <tglx@linutronix.de>
commit 51dede9c05df2b78acd6dcf6a17d21f0877d2d7b upstream.
Accessing the MCA thresholding controls in sysfs concurrently with CPU
hotplug can lead to a couple of KASAN-reported issues:
BUG: KASAN: use-after-free in sysfs_file_ops+0x155/0x180
Read of size 8 at addr ffff888367578940 by task grep/4019
and
BUG: KASAN: use-after-free in show_error_count+0x15c/0x180
Read of size 2 at addr ffff888368a05514 by task grep/4454
for example. Both result from the fact that the threshold block
creation/teardown code frees the descriptor memory itself instead of
defining proper ->release function and leaving it to the driver core to
take care of that, after all sysfs accesses have completed.
Do that and get rid of the custom freeing code, fixing the above UAFs in
the process.
[ bp: write commit message. ]
Fixes: 95268664390b ("[PATCH] x86_64: mce_amd support for family 0x10 processors")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20200214082801.13836-1-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/cpu/mce/amd.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -1161,9 +1161,12 @@ static const struct sysfs_ops threshold_
.store = store,
};
+static void threshold_block_release(struct kobject *kobj);
+
static struct kobj_type threshold_ktype = {
.sysfs_ops = &threshold_ops,
.default_attrs = default_attrs,
+ .release = threshold_block_release,
};
static const char *get_name(unsigned int bank, struct threshold_block *b)
@@ -1365,8 +1368,12 @@ static int threshold_create_bank(unsigne
return err;
}
-static void deallocate_threshold_block(unsigned int cpu,
- unsigned int bank)
+static void threshold_block_release(struct kobject *kobj)
+{
+ kfree(to_block(kobj));
+}
+
+static void deallocate_threshold_block(unsigned int cpu, unsigned int bank)
{
struct threshold_block *pos = NULL;
struct threshold_block *tmp = NULL;
@@ -1376,13 +1383,11 @@ static void deallocate_threshold_block(u
return;
list_for_each_entry_safe(pos, tmp, &head->blocks->miscj, miscj) {
- kobject_put(&pos->kobj);
list_del(&pos->miscj);
- kfree(pos);
+ kobject_put(&pos->kobj);
}
- kfree(per_cpu(threshold_banks, cpu)[bank]->blocks);
- per_cpu(threshold_banks, cpu)[bank]->blocks = NULL;
+ kobject_put(&head->blocks->kobj);
}
static void __threshold_remove_blocks(struct threshold_bank *b)
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 054/135] x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (52 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 053/135] x86/mce/amd: Fix kobject lifetime Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 055/135] serial: 8250: Check UPF_IRQ_SHARED in advance Greg Kroah-Hartman
` (84 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Kim Phillips, Borislav Petkov,
Peter Zijlstra
From: Kim Phillips <kim.phillips@amd.com>
commit 21b5ee59ef18e27d85810584caf1f7ddc705ea83 upstream.
Commit
aaf248848db50 ("perf/x86/msr: Add AMD IRPERF (Instructions Retired)
performance counter")
added support for access to the free-running counter via 'perf -e
msr/irperf/', but when exercised, it always returns a 0 count:
BEFORE:
$ perf stat -e instructions,msr/irperf/ true
Performance counter stats for 'true':
624,833 instructions
0 msr/irperf/
Simply set its enable bit - HWCR bit 30 - to make it start counting.
Enablement is restricted to all machines advertising IRPERF capability,
except those susceptible to an erratum that makes the IRPERF return
bad values.
That erratum occurs in Family 17h models 00-1fh [1], but not in F17h
models 20h and above [2].
AFTER (on a family 17h model 31h machine):
$ perf stat -e instructions,msr/irperf/ true
Performance counter stats for 'true':
621,690 instructions
622,490 msr/irperf/
[1] Revision Guide for AMD Family 17h Models 00h-0Fh Processors
[2] Revision Guide for AMD Family 17h Models 30h-3Fh Processors
The revision guides are available from the bugzilla Link below.
[ bp: Massage commit message. ]
Fixes: aaf248848db50 ("perf/x86/msr: Add AMD IRPERF (Instructions Retired) performance counter")
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537
Link: http://lkml.kernel.org/r/20200214201805.13830-1-kim.phillips@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/include/asm/msr-index.h | 2 ++
arch/x86/kernel/cpu/amd.c | 14 ++++++++++++++
2 files changed, 16 insertions(+)
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -510,6 +510,8 @@
#define MSR_K7_HWCR 0xc0010015
#define MSR_K7_HWCR_SMMLOCK_BIT 0
#define MSR_K7_HWCR_SMMLOCK BIT_ULL(MSR_K7_HWCR_SMMLOCK_BIT)
+#define MSR_K7_HWCR_IRPERF_EN_BIT 30
+#define MSR_K7_HWCR_IRPERF_EN BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT)
#define MSR_K7_FID_VID_CTL 0xc0010041
#define MSR_K7_FID_VID_STATUS 0xc0010042
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -28,6 +28,7 @@
static const int amd_erratum_383[];
static const int amd_erratum_400[];
+static const int amd_erratum_1054[];
static bool cpu_has_amd_erratum(struct cpuinfo_x86 *cpu, const int *erratum);
/*
@@ -978,6 +979,15 @@ static void init_amd(struct cpuinfo_x86
/* AMD CPUs don't reset SS attributes on SYSRET, Xen does. */
if (!cpu_has(c, X86_FEATURE_XENPV))
set_cpu_bug(c, X86_BUG_SYSRET_SS_ATTRS);
+
+ /*
+ * Turn on the Instructions Retired free counter on machines not
+ * susceptible to erratum #1054 "Instructions Retired Performance
+ * Counter May Be Inaccurate".
+ */
+ if (cpu_has(c, X86_FEATURE_IRPERF) &&
+ !cpu_has_amd_erratum(c, amd_erratum_1054))
+ msr_set_bit(MSR_K7_HWCR, MSR_K7_HWCR_IRPERF_EN_BIT);
}
#ifdef CONFIG_X86_32
@@ -1105,6 +1115,10 @@ static const int amd_erratum_400[] =
static const int amd_erratum_383[] =
AMD_OSVW_ERRATUM(3, AMD_MODEL_RANGE(0x10, 0, 0, 0xff, 0xf));
+/* #1054: Instructions Retired Performance Counter May Be Inaccurate */
+static const int amd_erratum_1054[] =
+ AMD_OSVW_ERRATUM(0, AMD_MODEL_RANGE(0x17, 0, 0, 0x2f, 0xf));
+
static bool cpu_has_amd_erratum(struct cpuinfo_x86 *cpu, const int *erratum)
{
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 055/135] serial: 8250: Check UPF_IRQ_SHARED in advance
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (53 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 054/135] x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 056/135] tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode Greg Kroah-Hartman
` (83 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Li RongQing, Kurt Kanzenbach,
Vikram Pandita, Andy Shevchenko
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
commit 7febbcbc48fc92e3f33863b32ed715ba4aff18c4 upstream.
The commit 54e53b2e8081
("tty: serial: 8250: pass IRQ shared flag to UART ports")
nicely explained the problem:
---8<---8<---
On some systems IRQ lines between multiple UARTs might be shared. If so, the
irqflags have to be configured accordingly. The reason is: The 8250 port startup
code performs IRQ tests *before* the IRQ handler for that particular port is
registered. This is performed in serial8250_do_startup(). This function checks
whether IRQF_SHARED is configured and only then disables the IRQ line while
testing.
This test is performed upon each open() of the UART device. Imagine two UARTs
share the same IRQ line: On is already opened and the IRQ is active. When the
second UART is opened, the IRQ line has to be disabled while performing IRQ
tests. Otherwise an IRQ might handler might be invoked, but the IRQ itself
cannot be handled, because the corresponding handler isn't registered,
yet. That's because the 8250 code uses a chain-handler and invokes the
corresponding port's IRQ handling routines himself.
Unfortunately this IRQF_SHARED flag isn't configured for UARTs probed via device
tree even if the IRQs are shared. This way, the actual and shared IRQ line isn't
disabled while performing tests and the kernel correctly detects a spurious
IRQ. So, adding this flag to the DT probe solves the issue.
Note: The UPF_SHARE_IRQ flag is configured unconditionally. Therefore, the
IRQF_SHARED flag can be set unconditionally as well.
Example stack trace by performing `echo 1 > /dev/ttyS2` on a non-patched system:
|irq 85: nobody cared (try booting with the "irqpoll" option)
| [...]
|handlers:
|[<ffff0000080fc628>] irq_default_primary_handler threaded [<ffff00000855fbb8>] serial8250_interrupt
|Disabling IRQ #85
---8<---8<---
But unfortunately didn't fix the root cause. Let's try again here by moving
IRQ flag assignment from serial_link_irq_chain() to serial8250_do_startup().
This should fix the similar issue reported for 8250_pnp case.
Since this change we don't need to have custom solutions in 8250_aspeed_vuart
and 8250_of drivers, thus, drop them.
Fixes: 1c2f04937b3e ("serial: 8250: add IRQ trigger support")
Reported-by: Li RongQing <lirongqing@baidu.com>
Cc: Kurt Kanzenbach <kurt@linutronix.de>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Kurt Kanzenbach <kurt@linutronix.de>
Link: https://lore.kernel.org/r/20200211135559.85960-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/8250/8250_aspeed_vuart.c | 1 -
drivers/tty/serial/8250/8250_core.c | 5 ++---
drivers/tty/serial/8250/8250_of.c | 1 -
drivers/tty/serial/8250/8250_port.c | 4 ++++
4 files changed, 6 insertions(+), 5 deletions(-)
--- a/drivers/tty/serial/8250/8250_aspeed_vuart.c
+++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c
@@ -379,7 +379,6 @@ static int aspeed_vuart_probe(struct pla
port.port.line = rc;
port.port.irq = irq_of_parse_and_map(np, 0);
- port.port.irqflags = IRQF_SHARED;
port.port.handle_irq = aspeed_vuart_handle_irq;
port.port.iotype = UPIO_MEM;
port.port.type = PORT_16550A;
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -174,7 +174,7 @@ static int serial_link_irq_chain(struct
struct hlist_head *h;
struct hlist_node *n;
struct irq_info *i;
- int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0;
+ int ret;
mutex_lock(&hash_mutex);
@@ -209,9 +209,8 @@ static int serial_link_irq_chain(struct
INIT_LIST_HEAD(&up->list);
i->head = &up->list;
spin_unlock_irq(&i->lock);
- irq_flags |= up->port.irqflags;
ret = request_irq(up->port.irq, serial8250_interrupt,
- irq_flags, up->port.name, i);
+ up->port.irqflags, up->port.name, i);
if (ret < 0)
serial_do_unlink(i, up);
}
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -172,7 +172,6 @@ static int of_platform_serial_setup(stru
port->type = type;
port->uartclk = clk;
- port->irqflags |= IRQF_SHARED;
if (of_property_read_bool(np, "no-loopback-test"))
port->flags |= UPF_SKIP_TEST;
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2192,6 +2192,10 @@ int serial8250_do_startup(struct uart_po
}
}
+ /* Check if we need to have shared IRQs */
+ if (port->irq && (up->port.flags & UPF_SHARE_IRQ))
+ up->port.irqflags |= IRQF_SHARED;
+
if (port->irq && !(up->port.flags & UPF_NO_THRE_TEST)) {
unsigned char iir1;
/*
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 056/135] tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (54 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 055/135] serial: 8250: Check UPF_IRQ_SHARED in advance Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 057/135] tty: serial: imx: setup the correct sg entry for tx dma Greg Kroah-Hartman
` (82 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Nicolas Ferre
From: Nicolas Ferre <nicolas.ferre@microchip.com>
commit 04b5bfe3dc94e64d0590c54045815cb5183fb095 upstream.
In atmel_shutdown() we call atmel_stop_rx() and atmel_stop_tx() functions.
Prevent the rx restart that is implemented in RS485 or ISO7816 modes when
calling atmel_stop_tx() by using the atomic information tasklet_shutdown
that is already in place for this purpose.
Fixes: 98f2082c3ac4 ("tty/serial: atmel: enforce tasklet init and termination sequences")
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210152053.8289-1-nicolas.ferre@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/atmel_serial.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -574,7 +574,8 @@ static void atmel_stop_tx(struct uart_po
atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask);
if (atmel_uart_is_half_duplex(port))
- atmel_start_rx(port);
+ if (!atomic_read(&atmel_port->tasklet_shutdown))
+ atmel_start_rx(port);
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 057/135] tty: serial: imx: setup the correct sg entry for tx dma
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (55 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 056/135] tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 058/135] tty: serial: qcom_geni_serial: Fix RX cancel command failure Greg Kroah-Hartman
` (81 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Eagle Zhou, Fugang Duan,
Uwe Kleine-König
From: Fugang Duan <fugang.duan@nxp.com>
commit f76707831829530ffdd3888bebc108aecefccaa0 upstream.
There has oops as below happen on i.MX8MP EVK platform that has
6G bytes DDR memory.
when (xmit->tail < xmit->head) && (xmit->head == 0),
it setups one sg entry with sg->length is zero:
sg_set_buf(sgl + 1, xmit->buf, xmit->head);
if xmit->buf is allocated from >4G address space, and SDMA only
support <4G address space, then dma_map_sg() will call swiotlb_map()
to do bounce buffer copying and mapping.
But swiotlb_map() don't allow sg entry's length is zero, otherwise
report BUG_ON().
So the patch is to correct the tx DMA scatter list.
Oops:
[ 287.675715] kernel BUG at kernel/dma/swiotlb.c:497!
[ 287.680592] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 287.686075] Modules linked in:
[ 287.689133] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.3-00016-g3fdc4e0-dirty #10
[ 287.696872] Hardware name: FSL i.MX8MP EVK (DT)
[ 287.701402] pstate: 80000085 (Nzcv daIf -PAN -UAO)
[ 287.706199] pc : swiotlb_tbl_map_single+0x1fc/0x310
[ 287.711076] lr : swiotlb_map+0x60/0x148
[ 287.714909] sp : ffff800010003c00
[ 287.718221] x29: ffff800010003c00 x28: 0000000000000000
[ 287.723533] x27: 0000000000000040 x26: ffff800011ae0000
[ 287.728844] x25: ffff800011ae09f8 x24: 0000000000000000
[ 287.734155] x23: 00000001b7af9000 x22: 0000000000000000
[ 287.739465] x21: ffff000176409c10 x20: 00000000001f7ffe
[ 287.744776] x19: ffff000176409c10 x18: 000000000000002e
[ 287.750087] x17: 0000000000000000 x16: 0000000000000000
[ 287.755397] x15: 0000000000000000 x14: 0000000000000000
[ 287.760707] x13: ffff00017f334000 x12: 0000000000000001
[ 287.766018] x11: 00000000001fffff x10: 0000000000000000
[ 287.771328] x9 : 0000000000000003 x8 : 0000000000000000
[ 287.776638] x7 : 0000000000000000 x6 : 0000000000000000
[ 287.781949] x5 : 0000000000200000 x4 : 0000000000000000
[ 287.787259] x3 : 0000000000000001 x2 : 00000001b7af9000
[ 287.792570] x1 : 00000000fbfff000 x0 : 0000000000000000
[ 287.797881] Call trace:
[ 287.800328] swiotlb_tbl_map_single+0x1fc/0x310
[ 287.804859] swiotlb_map+0x60/0x148
[ 287.808347] dma_direct_map_page+0xf0/0x130
[ 287.812530] dma_direct_map_sg+0x78/0xe0
[ 287.816453] imx_uart_dma_tx+0x134/0x2f8
[ 287.820374] imx_uart_dma_tx_callback+0xd8/0x168
[ 287.824992] vchan_complete+0x194/0x200
[ 287.828828] tasklet_action_common.isra.0+0x154/0x1a0
[ 287.833879] tasklet_action+0x24/0x30
[ 287.837540] __do_softirq+0x120/0x23c
[ 287.841202] irq_exit+0xb8/0xd8
[ 287.844343] __handle_domain_irq+0x64/0xb8
[ 287.848438] gic_handle_irq+0x5c/0x148
[ 287.852185] el1_irq+0xb8/0x180
[ 287.855327] cpuidle_enter_state+0x84/0x360
[ 287.859508] cpuidle_enter+0x34/0x48
[ 287.863083] call_cpuidle+0x18/0x38
[ 287.866571] do_idle+0x1e0/0x280
[ 287.869798] cpu_startup_entry+0x20/0x40
[ 287.873721] rest_init+0xd4/0xe0
[ 287.876949] arch_call_rest_init+0xc/0x14
[ 287.880958] start_kernel+0x420/0x44c
[ 287.884622] Code: 9124c021 9417aff8 a94363f7 17ffffd5 (d4210000)
[ 287.890718] ---[ end trace 5bc44c4ab6b009ce ]---
[ 287.895334] Kernel panic - not syncing: Fatal exception in interrupt
[ 287.901686] SMP: stopping secondary CPUs
[ 288.905607] SMP: failed to stop secondary CPUs 0-1
[ 288.910395] Kernel Offset: disabled
[ 288.913882] CPU features: 0x0002,2000200c
[ 288.917888] Memory Limit: none
[ 288.920944] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
Reported-by: Eagle Zhou <eagle.zhou@nxp.com>
Tested-by: Eagle Zhou <eagle.zhou@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Cc: stable <stable@vger.kernel.org>
Fixes: 7942f8577f2a ("serial: imx: TX DMA: clean up sg initialization")
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/1581401761-6378-1-git-send-email-fugang.duan@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/imx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -603,7 +603,7 @@ static void imx_uart_dma_tx(struct imx_p
sport->tx_bytes = uart_circ_chars_pending(xmit);
- if (xmit->tail < xmit->head) {
+ if (xmit->tail < xmit->head || xmit->head == 0) {
sport->dma_tx_nents = 1;
sg_init_one(sgl, xmit->buf + xmit->tail, sport->tx_bytes);
} else {
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 058/135] tty: serial: qcom_geni_serial: Fix RX cancel command failure
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (56 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 057/135] tty: serial: imx: setup the correct sg entry for tx dma Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 059/135] serdev: ttyport: restore client ops on deregistration Greg Kroah-Hartman
` (80 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, satya priya
From: satya priya <skakit@codeaurora.org>
commit 679aac5ead2f18d223554a52b543e1195e181811 upstream.
RX cancel command fails when BT is switched on and off multiple times.
To handle this, poll for the cancel bit in SE_GENI_S_IRQ_STATUS register
instead of SE_GENI_S_CMD_CTRL_REG.
As per the HPG update, handle the RX last bit after cancel command
and flush out the RX FIFO buffer.
Signed-off-by: satya priya <skakit@codeaurora.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1581415982-8793-1-git-send-email-skakit@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/qcom_geni_serial.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -125,6 +125,7 @@ static int handle_rx_console(struct uart
static int handle_rx_uart(struct uart_port *uport, u32 bytes, bool drop);
static unsigned int qcom_geni_serial_tx_empty(struct uart_port *port);
static void qcom_geni_serial_stop_rx(struct uart_port *uport);
+static void qcom_geni_serial_handle_rx(struct uart_port *uport, bool drop);
static const unsigned long root_freq[] = {7372800, 14745600, 19200000, 29491200,
32000000, 48000000, 64000000, 80000000,
@@ -615,7 +616,7 @@ static void qcom_geni_serial_stop_rx(str
u32 irq_en;
u32 status;
struct qcom_geni_serial_port *port = to_dev_port(uport, uport);
- u32 irq_clear = S_CMD_DONE_EN;
+ u32 s_irq_status;
irq_en = readl(uport->membase + SE_GENI_S_IRQ_EN);
irq_en &= ~(S_RX_FIFO_WATERMARK_EN | S_RX_FIFO_LAST_EN);
@@ -631,10 +632,19 @@ static void qcom_geni_serial_stop_rx(str
return;
geni_se_cancel_s_cmd(&port->se);
- qcom_geni_serial_poll_bit(uport, SE_GENI_S_CMD_CTRL_REG,
- S_GENI_CMD_CANCEL, false);
+ qcom_geni_serial_poll_bit(uport, SE_GENI_S_IRQ_STATUS,
+ S_CMD_CANCEL_EN, true);
+ /*
+ * If timeout occurs secondary engine remains active
+ * and Abort sequence is executed.
+ */
+ s_irq_status = readl(uport->membase + SE_GENI_S_IRQ_STATUS);
+ /* Flush the Rx buffer */
+ if (s_irq_status & S_RX_FIFO_LAST_EN)
+ qcom_geni_serial_handle_rx(uport, true);
+ writel(s_irq_status, uport->membase + SE_GENI_S_IRQ_CLEAR);
+
status = readl(uport->membase + SE_GENI_STATUS);
- writel(irq_clear, uport->membase + SE_GENI_S_IRQ_CLEAR);
if (status & S_GENI_CMD_ACTIVE)
qcom_geni_serial_abort_rx(uport);
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 059/135] serdev: ttyport: restore client ops on deregistration
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (57 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 058/135] tty: serial: qcom_geni_serial: Fix RX cancel command failure Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 060/135] MAINTAINERS: Update drm/i915 bug filing URL Greg Kroah-Hartman
` (79 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Loic Poulain, Johan Hovold
From: Johan Hovold <johan@kernel.org>
commit 0c5aae59270fb1f827acce182786094c9ccf598e upstream.
The serdev tty-port controller driver should reset the tty-port client
operations also on deregistration to avoid a NULL-pointer dereference in
case the port is later re-registered as a normal tty device.
Note that this can only happen with tty drivers such as 8250 which have
statically allocated port structures that can end up being reused and
where a later registration would not register a serdev controller (e.g.
due to registration errors or if the devicetree has been changed in
between).
Specifically, this can be an issue for any statically defined ports that
would be registered by 8250 core when an 8250 driver is being unbound.
Fixes: bed35c6dfa6a ("serdev: add a tty port controller driver")
Cc: stable <stable@vger.kernel.org> # 4.11
Reported-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200210145730.22762-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serdev/serdev-ttyport.c | 6 ++----
drivers/tty/tty_port.c | 5 +++--
include/linux/tty.h | 2 ++
3 files changed, 7 insertions(+), 6 deletions(-)
--- a/drivers/tty/serdev/serdev-ttyport.c
+++ b/drivers/tty/serdev/serdev-ttyport.c
@@ -265,7 +265,6 @@ struct device *serdev_tty_port_register(
struct device *parent,
struct tty_driver *drv, int idx)
{
- const struct tty_port_client_operations *old_ops;
struct serdev_controller *ctrl;
struct serport *serport;
int ret;
@@ -284,7 +283,6 @@ struct device *serdev_tty_port_register(
ctrl->ops = &ctrl_ops;
- old_ops = port->client_ops;
port->client_ops = &client_ops;
port->client_data = ctrl;
@@ -297,7 +295,7 @@ struct device *serdev_tty_port_register(
err_reset_data:
port->client_data = NULL;
- port->client_ops = old_ops;
+ port->client_ops = &tty_port_default_client_ops;
serdev_controller_put(ctrl);
return ERR_PTR(ret);
@@ -312,8 +310,8 @@ int serdev_tty_port_unregister(struct tt
return -ENODEV;
serdev_controller_remove(ctrl);
- port->client_ops = NULL;
port->client_data = NULL;
+ port->client_ops = &tty_port_default_client_ops;
serdev_controller_put(ctrl);
return 0;
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -52,10 +52,11 @@ static void tty_port_default_wakeup(stru
}
}
-static const struct tty_port_client_operations default_client_ops = {
+const struct tty_port_client_operations tty_port_default_client_ops = {
.receive_buf = tty_port_default_receive_buf,
.write_wakeup = tty_port_default_wakeup,
};
+EXPORT_SYMBOL_GPL(tty_port_default_client_ops);
void tty_port_init(struct tty_port *port)
{
@@ -68,7 +69,7 @@ void tty_port_init(struct tty_port *port
spin_lock_init(&port->lock);
port->close_delay = (50 * HZ) / 100;
port->closing_wait = (3000 * HZ) / 100;
- port->client_ops = &default_client_ops;
+ port->client_ops = &tty_port_default_client_ops;
kref_init(&port->kref);
}
EXPORT_SYMBOL(tty_port_init);
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -225,6 +225,8 @@ struct tty_port_client_operations {
void (*write_wakeup)(struct tty_port *port);
};
+extern const struct tty_port_client_operations tty_port_default_client_ops;
+
struct tty_port {
struct tty_bufhead buf; /* Locked internally */
struct tty_struct *tty; /* Back pointer */
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 060/135] MAINTAINERS: Update drm/i915 bug filing URL
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (58 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 059/135] serdev: ttyport: restore client ops on deregistration Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 061/135] ACPI: PM: s2idle: Check fixed wakeup events in acpi_s2idle_wake() Greg Kroah-Hartman
` (78 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Chris Wilson, Jani Nikula
From: Jani Nikula <jani.nikula@intel.com>
commit 96228b7df33f8eb9006f8ae96949400aed9bd303 upstream.
We've moved from bugzilla to gitlab.
Cc: stable@vger.kernel.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200212160434.6437-1-jani.nikula@intel.com
(cherry picked from commit 3a6a4f0810c8ade6f1ff63c34aa9834176b9d88b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
MAINTAINERS | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8201,7 +8201,7 @@ M: Joonas Lahtinen <joonas.lahtinen@linu
M: Rodrigo Vivi <rodrigo.vivi@intel.com>
L: intel-gfx@lists.freedesktop.org
W: https://01.org/linuxgraphics/
-B: https://01.org/linuxgraphics/documentation/how-report-bugs
+B: https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
C: irc://chat.freenode.net/intel-gfx
Q: http://patchwork.freedesktop.org/project/intel-gfx/
T: git git://anongit.freedesktop.org/drm-intel
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 061/135] ACPI: PM: s2idle: Check fixed wakeup events in acpi_s2idle_wake()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (59 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 060/135] MAINTAINERS: Update drm/i915 bug filing URL Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 062/135] Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()" Greg Kroah-Hartman
` (77 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Rafael J. Wysocki, Linus Torvalds,
Chris Wilson
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 63fb9623427fbb44e3782233b6e4714057b76ff2 upstream.
Commit fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from
waking up the system") overlooked the fact that fixed events can wake
up the system too and broke RTC wakeup from suspend-to-idle as a
result.
Fix this issue by checking the fixed events in acpi_s2idle_wake() in
addition to checking wakeup GPEs and break out of the suspend-to-idle
loop if the status bits of any enabled fixed events are set then.
Fixes: fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system")
Reported-and-tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/acpi/acpica/evevent.c | 45 ++++++++++++++++++++++++++++++++++++++++++
drivers/acpi/sleep.c | 7 ++++++
include/acpi/acpixf.h | 1
3 files changed, 53 insertions(+)
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -265,4 +265,49 @@ static u32 acpi_ev_fixed_event_dispatch(
handler) (acpi_gbl_fixed_event_handlers[event].context));
}
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_any_fixed_event_status_set
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: TRUE or FALSE
+ *
+ * DESCRIPTION: Checks the PM status register for active fixed events
+ *
+ ******************************************************************************/
+
+u32 acpi_any_fixed_event_status_set(void)
+{
+ acpi_status status;
+ u32 in_status;
+ u32 in_enable;
+ u32 i;
+
+ status = acpi_hw_register_read(ACPI_REGISTER_PM1_ENABLE, &in_enable);
+ if (ACPI_FAILURE(status)) {
+ return (FALSE);
+ }
+
+ status = acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, &in_status);
+ if (ACPI_FAILURE(status)) {
+ return (FALSE);
+ }
+
+ /*
+ * Check for all possible Fixed Events and dispatch those that are active
+ */
+ for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
+
+ /* Both the status and enable bits must be on for this event */
+
+ if ((in_status & acpi_gbl_fixed_event_info[i].status_bit_mask) &&
+ (in_enable & acpi_gbl_fixed_event_info[i].enable_bit_mask)) {
+ return (TRUE);
+ }
+ }
+
+ return (FALSE);
+}
+
#endif /* !ACPI_REDUCED_HARDWARE */
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -993,6 +993,13 @@ static bool acpi_s2idle_wake(void)
return true;
/*
+ * If the status bit of any enabled fixed event is set, the
+ * wakeup is regarded as valid.
+ */
+ if (acpi_any_fixed_event_status_set())
+ return true;
+
+ /*
* If there are no EC events to process and at least one of the
* other enabled GPEs is active, the wakeup is regarded as a
* genuine one.
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -749,6 +749,7 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_sta
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_wakeup_gpes(void))
ACPI_HW_DEPENDENT_RETURN_UINT32(u32 acpi_any_gpe_status_set(void))
+ACPI_HW_DEPENDENT_RETURN_UINT32(u32 acpi_any_fixed_event_status_set(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_get_gpe_device(u32 gpe_index,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 062/135] Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()"
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (60 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 061/135] ACPI: PM: s2idle: Check fixed wakeup events in acpi_s2idle_wake() Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 063/135] mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps() Greg Kroah-Hartman
` (76 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Ioanna Alifieraki, Manfred Spraul,
Herton R. Krzesinski, Arnd Bergmann, Catalin Marinas, malat,
Joel Fernandes (Google),
Davidlohr Bueso, Jay Vosburgh, Andrew Morton, Linus Torvalds
From: Ioanna Alifieraki <ioanna-maria.alifieraki@canonical.com>
commit edf28f4061afe4c2d9eb1c3323d90e882c1d6800 upstream.
This reverts commit a97955844807e327df11aa33869009d14d6b7de0.
Commit a97955844807 ("ipc,sem: remove uneeded sem_undo_list lock usage
in exit_sem()") removes a lock that is needed. This leads to a process
looping infinitely in exit_sem() and can also lead to a crash. There is
a reproducer available in [1] and with the commit reverted the issue
does not reproduce anymore.
Using the reproducer found in [1] is fairly easy to reach a point where
one of the child processes is looping infinitely in exit_sem between
for(;;) and if (semid == -1) block, while it's trying to free its last
sem_undo structure which has already been freed by freeary().
Each sem_undo struct is on two lists: one per semaphore set (list_id)
and one per process (list_proc). The list_id list tracks undos by
semaphore set, and the list_proc by process.
Undo structures are removed either by freeary() or by exit_sem(). The
freeary function is invoked when the user invokes a syscall to remove a
semaphore set. During this operation freeary() traverses the list_id
associated with the semaphore set and removes the undo structures from
both the list_id and list_proc lists.
For this case, exit_sem() is called at process exit. Each process
contains a struct sem_undo_list (referred to as "ulp") which contains
the head for the list_proc list. When the process exits, exit_sem()
traverses this list to remove each sem_undo struct. As in freeary(),
whenever a sem_undo struct is removed from list_proc, it is also removed
from the list_id list.
Removing elements from list_id is safe for both exit_sem() and freeary()
due to sem_lock(). Removing elements from list_proc is not safe;
freeary() locks &un->ulp->lock when it performs
list_del_rcu(&un->list_proc) but exit_sem() does not (locking was
removed by commit a97955844807 ("ipc,sem: remove uneeded sem_undo_list
lock usage in exit_sem()").
This can result in the following situation while executing the
reproducer [1] : Consider a child process in exit_sem() and the parent
in freeary() (because of semctl(sid[i], NSEM, IPC_RMID)).
- The list_proc for the child contains the last two undo structs A and
B (the rest have been removed either by exit_sem() or freeary()).
- The semid for A is 1 and semid for B is 2.
- exit_sem() removes A and at the same time freeary() removes B.
- Since A and B have different semid sem_lock() will acquire different
locks for each process and both can proceed.
The bug is that they remove A and B from the same list_proc at the same
time because only freeary() acquires the ulp lock. When exit_sem()
removes A it makes ulp->list_proc.next to point at B and at the same
time freeary() removes B setting B->semid=-1.
At the next iteration of for(;;) loop exit_sem() will try to remove B.
The only way to break from for(;;) is for (&un->list_proc ==
&ulp->list_proc) to be true which is not. Then exit_sem() will check if
B->semid=-1 which is and will continue looping in for(;;) until the
memory for B is reallocated and the value at B->semid is changed.
At that point, exit_sem() will crash attempting to unlink B from the
lists (this can be easily triggered by running the reproducer [1] a
second time).
To prove this scenario instrumentation was added to keep information
about each sem_undo (un) struct that is removed per process and per
semaphore set (sma).
CPU0 CPU1
[caller holds sem_lock(sma for A)] ...
freeary() exit_sem()
... ...
... sem_lock(sma for B)
spin_lock(A->ulp->lock) ...
list_del_rcu(un_A->list_proc) list_del_rcu(un_B->list_proc)
Undo structures A and B have different semid and sem_lock() operations
proceed. However they belong to the same list_proc list and they are
removed at the same time. This results into ulp->list_proc.next
pointing to the address of B which is already removed.
After reverting commit a97955844807 ("ipc,sem: remove uneeded
sem_undo_list lock usage in exit_sem()") the issue was no longer
reproducible.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1694779
Link: http://lkml.kernel.org/r/20191211191318.11860-1-ioanna-maria.alifieraki@canonical.com
Fixes: a97955844807 ("ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()")
Signed-off-by: Ioanna Alifieraki <ioanna-maria.alifieraki@canonical.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Acked-by: Herton R. Krzesinski <herton@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: <malat@debian.org>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Jay Vosburgh <jay.vosburgh@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
ipc/sem.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -2368,11 +2368,9 @@ void exit_sem(struct task_struct *tsk)
ipc_assert_locked_object(&sma->sem_perm);
list_del(&un->list_id);
- /* we are the last process using this ulp, acquiring ulp->lock
- * isn't required. Besides that, we are also protected against
- * IPC_RMID as we hold sma->sem_perm lock now
- */
+ spin_lock(&ulp->lock);
list_del_rcu(&un->list_proc);
+ spin_unlock(&ulp->lock);
/* perform adjustments registered in un */
for (i = 0; i < sma->sem_nsems; i++) {
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 063/135] mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (61 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 062/135] Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()" Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 064/135] nvme-multipath: Fix memory leak with ana_log_buf Greg Kroah-Hartman
` (75 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Vasily Averin, Kirill Tkhai,
Michal Hocko, Roman Gushchin, Johannes Weiner, Vladimir Davydov,
Andrew Morton, Linus Torvalds
From: Vasily Averin <vvs@virtuozzo.com>
commit 75866af62b439859d5146b7093ceb6b482852683 upstream.
for_each_mem_cgroup() increases css reference counter for memory cgroup
and requires to use mem_cgroup_iter_break() if the walk is cancelled.
Link: http://lkml.kernel.org/r/c98414fb-7e1f-da0f-867a-9340ec4bd30b@virtuozzo.com
Fixes: 0a4465d34028 ("mm, memcg: assign memcg-aware shrinkers bitmap to memcg")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/memcontrol.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -418,8 +418,10 @@ int memcg_expand_shrinker_maps(int new_i
if (mem_cgroup_is_root(memcg))
continue;
ret = memcg_expand_one_shrinker_map(memcg, size, old_size);
- if (ret)
+ if (ret) {
+ mem_cgroup_iter_break(NULL, memcg);
goto unlock;
+ }
}
unlock:
if (!ret)
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 064/135] nvme-multipath: Fix memory leak with ana_log_buf
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (62 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 063/135] mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps() Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 065/135] genirq/irqdomain: Make sure all irq domain flags are distinct Greg Kroah-Hartman
` (74 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Sagi Grimberg, Christoph Hellwig,
Logan Gunthorpe, Keith Busch
From: Logan Gunthorpe <logang@deltatee.com>
commit 3b7830904e17202524bad1974505a9bfc718d31f upstream.
kmemleak reports a memory leak with the ana_log_buf allocated by
nvme_mpath_init():
unreferenced object 0xffff888120e94000 (size 8208):
comm "nvme", pid 6884, jiffies 4295020435 (age 78786.312s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ................
01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000e2360188>] kmalloc_order+0x97/0xc0
[<0000000079b18dd4>] kmalloc_order_trace+0x24/0x100
[<00000000f50c0406>] __kmalloc+0x24c/0x2d0
[<00000000f31a10b9>] nvme_mpath_init+0x23c/0x2b0
[<000000005802589e>] nvme_init_identify+0x75f/0x1600
[<0000000058ef911b>] nvme_loop_configure_admin_queue+0x26d/0x280
[<00000000673774b9>] nvme_loop_create_ctrl+0x2a7/0x710
[<00000000f1c7a233>] nvmf_dev_write+0xc66/0x10b9
[<000000004199f8d0>] __vfs_write+0x50/0xa0
[<0000000065466fef>] vfs_write+0xf3/0x280
[<00000000b0db9a8b>] ksys_write+0xc6/0x160
[<0000000082156b91>] __x64_sys_write+0x43/0x50
[<00000000c34fbb6d>] do_syscall_64+0x77/0x2f0
[<00000000bbc574c9>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
nvme_mpath_init() is called by nvme_init_identify() which is called in
multiple places (nvme_reset_work(), nvme_passthru_end(), etc). This
means nvme_mpath_init() may be called multiple times before
nvme_mpath_uninit() (which is only called on nvme_free_ctrl()).
When nvme_mpath_init() is called multiple times, it overwrites the
ana_log_buf pointer with a new allocation, thus leaking the previous
allocation.
To fix this, free ana_log_buf before allocating a new one.
Fixes: 0d0b660f214dc490 ("nvme: add ANA support")
Cc: <stable@vger.kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/nvme/host/multipath.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -711,6 +711,7 @@ int nvme_mpath_init(struct nvme_ctrl *ct
}
INIT_WORK(&ctrl->ana_work, nvme_ana_work);
+ kfree(ctrl->ana_log_buf);
ctrl->ana_log_buf = kmalloc(ctrl->ana_log_size, GFP_KERNEL);
if (!ctrl->ana_log_buf) {
error = -ENOMEM;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 065/135] genirq/irqdomain: Make sure all irq domain flags are distinct
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (63 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 064/135] nvme-multipath: Fix memory leak with ana_log_buf Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 066/135] mm/vmscan.c: dont round up scan size for online memory cgroup Greg Kroah-Hartman
` (73 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Zenghui Yu, Thomas Gleixner
From: Zenghui Yu <yuzenghui@huawei.com>
commit 2546287c5fb363a0165933ae2181c92f03e701d0 upstream.
This was noticed when printing debugfs for MSIs on my ARM64 server. The
new dstate IRQD_MSI_NOMASK_QUIRK came out surprisingly while it should only
be the x86 stuff for the time being...
The new MSI quirk flag uses the same bit as IRQ_DOMAIN_NAME_ALLOCATED which
is oddly defined as bit 6 for no good reason.
Switch it to the non used bit 1.
Fixes: 6f1a4891a592 ("x86/apic/msi: Plug non-maskable MSI affinity race")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20200221020725.2038-1-yuzenghui@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/irqdomain.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -191,7 +191,7 @@ enum {
IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
/* Irq domain name was allocated in __irq_domain_add() */
- IRQ_DOMAIN_NAME_ALLOCATED = (1 << 6),
+ IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1),
/* Irq domain is an IPI domain with virq per cpu */
IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2),
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 066/135] mm/vmscan.c: dont round up scan size for online memory cgroup
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (64 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 065/135] genirq/irqdomain: Make sure all irq domain flags are distinct Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 067/135] mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM Greg Kroah-Hartman
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138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Gavin Shan, Roman Gushchin,
Andrew Morton, Linus Torvalds
From: Gavin Shan <gshan@redhat.com>
commit 76073c646f5f4999d763f471df9e38a5a912d70d upstream.
Commit 68600f623d69 ("mm: don't miss the last page because of round-off
error") makes the scan size round up to @denominator regardless of the
memory cgroup's state, online or offline. This affects the overall
reclaiming behavior: the corresponding LRU list is eligible for
reclaiming only when its size logically right shifted by @sc->priority
is bigger than zero in the former formula.
For example, the inactive anonymous LRU list should have at least 0x4000
pages to be eligible for reclaiming when we have 60/12 for
swappiness/priority and without taking scan/rotation ratio into account.
After the roundup is applied, the inactive anonymous LRU list becomes
eligible for reclaiming when its size is bigger than or equal to 0x1000
in the same condition.
(0x4000 >> 12) * 60 / (60 + 140 + 1) = 1
((0x1000 >> 12) * 60) + 200) / (60 + 140 + 1) = 1
aarch64 has 512MB huge page size when the base page size is 64KB. The
memory cgroup that has a huge page is always eligible for reclaiming in
that case.
The reclaiming is likely to stop after the huge page is reclaimed,
meaing the further iteration on @sc->priority and the silbing and child
memory cgroups will be skipped. The overall behaviour has been changed.
This fixes the issue by applying the roundup to offlined memory cgroups
only, to give more preference to reclaim memory from offlined memory
cgroup. It sounds reasonable as those memory is unlikedly to be used by
anyone.
The issue was found by starting up 8 VMs on a Ampere Mustang machine,
which has 8 CPUs and 16 GB memory. Each VM is given with 2 vCPUs and
2GB memory. It took 264 seconds for all VMs to be completely up and
784MB swap is consumed after that. With this patch applied, it took 236
seconds and 60MB swap to do same thing. So there is 10% performance
improvement for my case. Note that KSM is disable while THP is enabled
in the testing.
total used free shared buff/cache available
Mem: 16196 10065 2049 16 4081 3749
Swap: 8175 784 7391
total used free shared buff/cache available
Mem: 16196 11324 3656 24 1215 2936
Swap: 8175 60 8115
Link: http://lkml.kernel.org/r/20200211024514.8730-1-gshan@redhat.com
Fixes: 68600f623d69 ("mm: don't miss the last page because of round-off error")
Signed-off-by: Gavin Shan <gshan@redhat.com>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: <stable@vger.kernel.org> [4.20+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/vmscan.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2530,10 +2530,13 @@ out:
/*
* Scan types proportional to swappiness and
* their relative recent reclaim efficiency.
- * Make sure we don't miss the last page
- * because of a round-off error.
+ * Make sure we don't miss the last page on
+ * the offlined memory cgroups because of a
+ * round-off error.
*/
- scan = DIV64_U64_ROUND_UP(scan * fraction[file],
+ scan = mem_cgroup_online(memcg) ?
+ div64_u64(scan * fraction[file], denominator) :
+ DIV64_U64_ROUND_UP(scan * fraction[file],
denominator);
break;
case SCAN_FILE:
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 067/135] mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (65 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 066/135] mm/vmscan.c: dont round up scan size for online memory cgroup Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 068/135] lib/stackdepot.c: fix global out-of-bounds in stack_slabs Greg Kroah-Hartman
` (71 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Wei Yang, Baoquan He,
David Hildenbrand, Dan Williams, Michal Hocko, Mike Rapoport,
Oscar Salvador, Andrew Morton, Linus Torvalds
From: Wei Yang <richardw.yang@linux.intel.com>
commit 18e19f195cd888f65643a77a0c6aee8f5be6439a upstream.
When we use SPARSEMEM instead of SPARSEMEM_VMEMMAP, pfn_to_page()
doesn't work before sparse_init_one_section() is called.
This leads to a crash when hotplug memory:
BUG: unable to handle page fault for address: 0000000006400000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0
Oops: 0002 [#1] SMP PTI
CPU: 3 PID: 221 Comm: kworker/u16:1 Tainted: G W 5.5.0-next-20200205+ #343
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
RIP: 0010:__memset+0x24/0x30
Code: cc cc cc cc cc cc 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 <f3> 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3
RSP: 0018:ffffb43ac0373c80 EFLAGS: 00010a87
RAX: ffffffffffffffff RBX: ffff8a1518800000 RCX: 0000000000050000
RDX: 0000000000000000 RSI: 00000000000000ff RDI: 0000000006400000
RBP: 0000000000140000 R08: 0000000000100000 R09: 0000000006400000
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000028 R14: 0000000000000000 R15: ffff8a153ffd9280
FS: 0000000000000000(0000) GS:ffff8a153ab00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000006400000 CR3: 0000000136fca000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sparse_add_section+0x1c9/0x26a
__add_pages+0xbf/0x150
add_pages+0x12/0x60
add_memory_resource+0xc8/0x210
__add_memory+0x62/0xb0
acpi_memory_device_add+0x13f/0x300
acpi_bus_attach+0xf6/0x200
acpi_bus_scan+0x43/0x90
acpi_device_hotplug+0x275/0x3d0
acpi_hotplug_work_fn+0x1a/0x30
process_one_work+0x1a7/0x370
worker_thread+0x30/0x380
kthread+0x112/0x130
ret_from_fork+0x35/0x40
We should use memmap as it did.
On x86 the impact is limited to x86_32 builds, or x86_64 configurations
that override the default setting for SPARSEMEM_VMEMMAP.
Other memory hotplug archs (arm64, ia64, and ppc) also default to
SPARSEMEM_VMEMMAP=y.
[dan.j.williams@intel.com: changelog update]
{rppt@linux.ibm.com: changelog update]
Link: http://lkml.kernel.org/r/20200219030454.4844-1-bhe@redhat.com
Fixes: ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug")
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/sparse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -884,7 +884,7 @@ int __meminit sparse_add_section(int nid
* Poison uninitialized struct pages in order to catch invalid flags
* combinations.
*/
- page_init_poison(pfn_to_page(start_pfn), sizeof(struct page) * nr_pages);
+ page_init_poison(memmap, sizeof(struct page) * nr_pages);
ms = __nr_to_section(section_nr);
set_section_nid(section_nr, nid);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 068/135] lib/stackdepot.c: fix global out-of-bounds in stack_slabs
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (66 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 067/135] mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 069/135] mm: Avoid creating virtual address aliases in brk()/mmap()/mremap() Greg Kroah-Hartman
` (70 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Alexander Potapenko, Walter Wu,
Dmitry Vyukov, Matthias Brugger, Thomas Gleixner, Josh Poimboeuf,
Kate Stewart, Andrew Morton, Linus Torvalds
From: Alexander Potapenko <glider@google.com>
commit 305e519ce48e935702c32241f07d393c3c8fed3e upstream.
Walter Wu has reported a potential case in which init_stack_slab() is
called after stack_slabs[STACK_ALLOC_MAX_SLABS - 1] has already been
initialized. In that case init_stack_slab() will overwrite
stack_slabs[STACK_ALLOC_MAX_SLABS], which may result in a memory
corruption.
Link: http://lkml.kernel.org/r/20200218102950.260263-1-glider@google.com
Fixes: cd11016e5f521 ("mm, kasan: stackdepot implementation. Enable stackdepot for SLAB")
Signed-off-by: Alexander Potapenko <glider@google.com>
Reported-by: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/stackdepot.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -83,15 +83,19 @@ static bool init_stack_slab(void **preal
return true;
if (stack_slabs[depot_index] == NULL) {
stack_slabs[depot_index] = *prealloc;
+ *prealloc = NULL;
} else {
- stack_slabs[depot_index + 1] = *prealloc;
+ /* If this is the last depot slab, do not touch the next one. */
+ if (depot_index + 1 < STACK_ALLOC_MAX_SLABS) {
+ stack_slabs[depot_index + 1] = *prealloc;
+ *prealloc = NULL;
+ }
/*
* This smp_store_release pairs with smp_load_acquire() from
* |next_slab_inited| above and in stack_depot_save().
*/
smp_store_release(&next_slab_inited, 1);
}
- *prealloc = NULL;
return true;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 069/135] mm: Avoid creating virtual address aliases in brk()/mmap()/mremap()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (67 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 068/135] lib/stackdepot.c: fix global out-of-bounds in stack_slabs Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 070/135] drm/amdgpu/soc15: fix xclk for raven Greg Kroah-Hartman
` (69 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Florian Weimer, Andrew Morton,
Victor Stinner, Will Deacon, Andrey Konovalov, Catalin Marinas
From: Catalin Marinas <catalin.marinas@arm.com>
commit dcde237319e626d1ec3c9d8b7613032f0fd4663a upstream.
Currently the arm64 kernel ignores the top address byte passed to brk(),
mmap() and mremap(). When the user is not aware of the 56-bit address
limit or relies on the kernel to return an error, untagging such
pointers has the potential to create address aliases in user-space.
Passing a tagged address to munmap(), madvise() is permitted since the
tagged pointer is expected to be inside an existing mapping.
The current behaviour breaks the existing glibc malloc() implementation
which relies on brk() with an address beyond 56-bit to be rejected by
the kernel.
Remove untagging in the above functions by partially reverting commit
ce18d171cb73 ("mm: untag user pointers in mmap/munmap/mremap/brk"). In
addition, update the arm64 tagged-address-abi.rst document accordingly.
Link: https://bugzilla.redhat.com/1797052
Fixes: ce18d171cb73 ("mm: untag user pointers in mmap/munmap/mremap/brk")
Cc: <stable@vger.kernel.org> # 5.4.x-
Cc: Florian Weimer <fweimer@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Victor Stinner <vstinner@redhat.com>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/arm64/tagged-address-abi.rst | 11 +++++++++--
mm/mmap.c | 4 ----
mm/mremap.c | 1 -
3 files changed, 9 insertions(+), 7 deletions(-)
--- a/Documentation/arm64/tagged-address-abi.rst
+++ b/Documentation/arm64/tagged-address-abi.rst
@@ -44,8 +44,15 @@ The AArch64 Tagged Address ABI has two s
how the user addresses are used by the kernel:
1. User addresses not accessed by the kernel but used for address space
- management (e.g. ``mmap()``, ``mprotect()``, ``madvise()``). The use
- of valid tagged pointers in this context is always allowed.
+ management (e.g. ``mprotect()``, ``madvise()``). The use of valid
+ tagged pointers in this context is allowed with the exception of
+ ``brk()``, ``mmap()`` and the ``new_address`` argument to
+ ``mremap()`` as these have the potential to alias with existing
+ user addresses.
+
+ NOTE: This behaviour changed in v5.6 and so some earlier kernels may
+ incorrectly accept valid tagged pointers for the ``brk()``,
+ ``mmap()`` and ``mremap()`` system calls.
2. User addresses accessed by the kernel (e.g. ``write()``). This ABI
relaxation is disabled by default and the application thread needs to
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -195,8 +195,6 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
bool downgraded = false;
LIST_HEAD(uf);
- brk = untagged_addr(brk);
-
if (down_write_killable(&mm->mmap_sem))
return -EINTR;
@@ -1583,8 +1581,6 @@ unsigned long ksys_mmap_pgoff(unsigned l
struct file *file = NULL;
unsigned long retval;
- addr = untagged_addr(addr);
-
if (!(flags & MAP_ANONYMOUS)) {
audit_mmap_fd(fd, flags);
file = fget(fd);
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -607,7 +607,6 @@ SYSCALL_DEFINE5(mremap, unsigned long, a
LIST_HEAD(uf_unmap);
addr = untagged_addr(addr);
- new_addr = untagged_addr(new_addr);
if (flags & ~(MREMAP_FIXED | MREMAP_MAYMOVE))
return ret;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 070/135] drm/amdgpu/soc15: fix xclk for raven
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (68 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 069/135] mm: Avoid creating virtual address aliases in brk()/mmap()/mremap() Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 071/135] drm/amdgpu/gfx9: disable gfxoff when reading rlc clock Greg Kroah-Hartman
` (68 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Evan Quan, Alex Deucher
From: Alex Deucher <alexander.deucher@amd.com>
commit c657b936ea98630ef5ba4f130ab1ad5c534d0165 upstream.
It's 25 Mhz (refclk / 4). This fixes the interpretation
of the rlc clock counter.
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/soc15.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -267,7 +267,12 @@ static u32 soc15_get_config_memsize(stru
static u32 soc15_get_xclk(struct amdgpu_device *adev)
{
- return adev->clock.spll.reference_freq;
+ u32 reference_clock = adev->clock.spll.reference_freq;
+
+ if (adev->asic_type == CHIP_RAVEN)
+ return reference_clock / 4;
+
+ return reference_clock;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 071/135] drm/amdgpu/gfx9: disable gfxoff when reading rlc clock
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (69 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 070/135] drm/amdgpu/soc15: fix xclk for raven Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 072/135] drm/amdgpu/gfx10: " Greg Kroah-Hartman
` (67 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Xiaojie Yuan, Alex Deucher
From: Alex Deucher <alexander.deucher@amd.com>
commit 120cf959308e1bda984e40a9edd25ee2d6262efd upstream.
Otherwise we readback all ones. Fixes rlc counter
readback while gfxoff is active.
Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -4080,11 +4080,13 @@ static uint64_t gfx_v9_0_get_gpu_clock_c
{
uint64_t clock;
+ amdgpu_gfx_off_ctrl(adev, false);
mutex_lock(&adev->gfx.gpu_clock_mutex);
WREG32_SOC15(GC, 0, mmRLC_CAPTURE_GPU_CLOCK_COUNT, 1);
clock = (uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_LSB) |
((uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_MSB) << 32ULL);
mutex_unlock(&adev->gfx.gpu_clock_mutex);
+ amdgpu_gfx_off_ctrl(adev, true);
return clock;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 072/135] drm/amdgpu/gfx10: disable gfxoff when reading rlc clock
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (70 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 071/135] drm/amdgpu/gfx9: disable gfxoff when reading rlc clock Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 073/135] drm/nouveau/kms/gv100-: Re-set LUT after clearing for modesets Greg Kroah-Hartman
` (66 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Xiaojie Yuan, Alex Deucher
From: Alex Deucher <alexander.deucher@amd.com>
commit b08c3ed609aabc4e76e74edc4404f0c26279d7ed upstream.
Otherwise we readback all ones. Fixes rlc counter
readback while gfxoff is active.
Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -3977,11 +3977,13 @@ static uint64_t gfx_v10_0_get_gpu_clock_
{
uint64_t clock;
+ amdgpu_gfx_off_ctrl(adev, false);
mutex_lock(&adev->gfx.gpu_clock_mutex);
WREG32_SOC15(GC, 0, mmRLC_CAPTURE_GPU_CLOCK_COUNT, 1);
clock = (uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_LSB) |
((uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_MSB) << 32ULL);
mutex_unlock(&adev->gfx.gpu_clock_mutex);
+ amdgpu_gfx_off_ctrl(adev, true);
return clock;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 073/135] drm/nouveau/kms/gv100-: Re-set LUT after clearing for modesets
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (71 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 072/135] drm/amdgpu/gfx10: " Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 074/135] drm/i915: Wean off drm_pci_alloc/drm_pci_free Greg Kroah-Hartman
` (65 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Lyude Paul, Ben Skeggs
From: Lyude Paul <lyude@redhat.com>
commit f287d3d19769b1d22cba4e51fa0487f2697713c9 upstream.
While certain modeset operations on gv100+ need us to temporarily
disable the LUT, we make the mistake of sometimes neglecting to
reprogram the LUT after such modesets. In particular, moving a head from
one encoder to another seems to trigger this quite often. GV100+ is very
picky about having a LUT in most scenarios, so this causes the display
engine to hang with the following error code:
disp: chid 1 stat 00005080 reason 5 [INVALID_STATE] mthd 0200 data
00000001 code 0000002d)
So, fix this by always re-programming the LUT if we're clearing it in a
state where the wndw is still visible, and has a XLUT handle programmed.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Fixes: facaed62b4cb ("drm/nouveau/kms/gv100: initial support")
Cc: <stable@vger.kernel.org> # v4.18+
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/nouveau/dispnv50/wndw.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
@@ -451,6 +451,8 @@ nv50_wndw_atomic_check(struct drm_plane
asyw->clr.ntfy = armw->ntfy.handle != 0;
asyw->clr.sema = armw->sema.handle != 0;
asyw->clr.xlut = armw->xlut.handle != 0;
+ if (asyw->clr.xlut && asyw->visible)
+ asyw->set.xlut = asyw->xlut.handle != 0;
asyw->clr.csc = armw->csc.valid;
if (wndw->func->image_clr)
asyw->clr.image = armw->image.handle[0] != 0;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 074/135] drm/i915: Wean off drm_pci_alloc/drm_pci_free
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (72 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 073/135] drm/nouveau/kms/gv100-: Re-set LUT after clearing for modesets Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 075/135] drm/i915: Update drm/i915 bug filing URL Greg Kroah-Hartman
` (64 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Chris Wilson, Daniel Vetter, Jani Nikula
From: Chris Wilson <chris@chris-wilson.co.uk>
commit aa3146193ae25d0fe4b96d815169a135db2e8f01 upstream.
drm_pci_alloc and drm_pci_free are just very thin wrappers around
dma_alloc_coherent, with a note that we should be removing them.
Furthermore since
commit de09d31dd38a50fdce106c15abd68432eebbd014
Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Date: Fri Jan 15 16:51:42 2016 -0800
page-flags: define PG_reserved behavior on compound pages
As far as I can see there's no users of PG_reserved on compound pages.
Let's use PF_NO_COMPOUND here.
drm_pci_alloc has been declared broken since it mixes GFP_COMP and
SetPageReserved. Avoid this conflict by weaning ourselves off using the
abstraction and using the dma functions directly.
Reported-by: Taketo Kabe
Closes: https://gitlab.freedesktop.org/drm/intel/issues/1027
Fixes: de09d31dd38a ("page-flags: define PG_reserved behavior on compound pages")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: <stable@vger.kernel.org> # v4.5+
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200202153934.3899472-1-chris@chris-wilson.co.uk
(cherry picked from commit c6790dc22312f592c1434577258b31c48c72d52a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_display.c | 2
drivers/gpu/drm/i915/gem/i915_gem_object_types.h | 3
drivers/gpu/drm/i915/gem/i915_gem_phys.c | 98 +++++++++++------------
drivers/gpu/drm/i915/i915_gem.c | 8 -
4 files changed, 55 insertions(+), 56 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10510,7 +10510,7 @@ static u32 intel_cursor_base(const struc
u32 base;
if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
- base = obj->phys_handle->busaddr;
+ base = sg_dma_address(obj->mm.pages->sgl);
else
base = intel_plane_ggtt_offset(plane_state);
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
@@ -240,9 +240,6 @@ struct drm_i915_gem_object {
void *gvt_info;
};
-
- /** for phys allocated objects */
- struct drm_dma_handle *phys_handle;
};
static inline struct drm_i915_gem_object *
--- a/drivers/gpu/drm/i915/gem/i915_gem_phys.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_phys.c
@@ -21,88 +21,87 @@
static int i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj)
{
struct address_space *mapping = obj->base.filp->f_mapping;
- struct drm_dma_handle *phys;
- struct sg_table *st;
struct scatterlist *sg;
- char *vaddr;
+ struct sg_table *st;
+ dma_addr_t dma;
+ void *vaddr;
+ void *dst;
int i;
- int err;
if (WARN_ON(i915_gem_object_needs_bit17_swizzle(obj)))
return -EINVAL;
- /* Always aligning to the object size, allows a single allocation
+ /*
+ * Always aligning to the object size, allows a single allocation
* to handle all possible callers, and given typical object sizes,
* the alignment of the buddy allocation will naturally match.
*/
- phys = drm_pci_alloc(obj->base.dev,
- roundup_pow_of_two(obj->base.size),
- roundup_pow_of_two(obj->base.size));
- if (!phys)
+ vaddr = dma_alloc_coherent(&obj->base.dev->pdev->dev,
+ roundup_pow_of_two(obj->base.size),
+ &dma, GFP_KERNEL);
+ if (!vaddr)
return -ENOMEM;
- vaddr = phys->vaddr;
+ st = kmalloc(sizeof(*st), GFP_KERNEL);
+ if (!st)
+ goto err_pci;
+
+ if (sg_alloc_table(st, 1, GFP_KERNEL))
+ goto err_st;
+
+ sg = st->sgl;
+ sg->offset = 0;
+ sg->length = obj->base.size;
+
+ sg_assign_page(sg, (struct page *)vaddr);
+ sg_dma_address(sg) = dma;
+ sg_dma_len(sg) = obj->base.size;
+
+ dst = vaddr;
for (i = 0; i < obj->base.size / PAGE_SIZE; i++) {
struct page *page;
- char *src;
+ void *src;
page = shmem_read_mapping_page(mapping, i);
- if (IS_ERR(page)) {
- err = PTR_ERR(page);
- goto err_phys;
- }
+ if (IS_ERR(page))
+ goto err_st;
src = kmap_atomic(page);
- memcpy(vaddr, src, PAGE_SIZE);
- drm_clflush_virt_range(vaddr, PAGE_SIZE);
+ memcpy(dst, src, PAGE_SIZE);
+ drm_clflush_virt_range(dst, PAGE_SIZE);
kunmap_atomic(src);
put_page(page);
- vaddr += PAGE_SIZE;
+ dst += PAGE_SIZE;
}
intel_gt_chipset_flush(&to_i915(obj->base.dev)->gt);
- st = kmalloc(sizeof(*st), GFP_KERNEL);
- if (!st) {
- err = -ENOMEM;
- goto err_phys;
- }
-
- if (sg_alloc_table(st, 1, GFP_KERNEL)) {
- kfree(st);
- err = -ENOMEM;
- goto err_phys;
- }
-
- sg = st->sgl;
- sg->offset = 0;
- sg->length = obj->base.size;
-
- sg_dma_address(sg) = phys->busaddr;
- sg_dma_len(sg) = obj->base.size;
-
- obj->phys_handle = phys;
-
__i915_gem_object_set_pages(obj, st, sg->length);
return 0;
-err_phys:
- drm_pci_free(obj->base.dev, phys);
-
- return err;
+err_st:
+ kfree(st);
+err_pci:
+ dma_free_coherent(&obj->base.dev->pdev->dev,
+ roundup_pow_of_two(obj->base.size),
+ vaddr, dma);
+ return -ENOMEM;
}
static void
i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj,
struct sg_table *pages)
{
+ dma_addr_t dma = sg_dma_address(pages->sgl);
+ void *vaddr = sg_page(pages->sgl);
+
__i915_gem_object_release_shmem(obj, pages, false);
if (obj->mm.dirty) {
struct address_space *mapping = obj->base.filp->f_mapping;
- char *vaddr = obj->phys_handle->vaddr;
+ void *src = vaddr;
int i;
for (i = 0; i < obj->base.size / PAGE_SIZE; i++) {
@@ -114,15 +113,16 @@ i915_gem_object_put_pages_phys(struct dr
continue;
dst = kmap_atomic(page);
- drm_clflush_virt_range(vaddr, PAGE_SIZE);
- memcpy(dst, vaddr, PAGE_SIZE);
+ drm_clflush_virt_range(src, PAGE_SIZE);
+ memcpy(dst, src, PAGE_SIZE);
kunmap_atomic(dst);
set_page_dirty(page);
if (obj->mm.madv == I915_MADV_WILLNEED)
mark_page_accessed(page);
put_page(page);
- vaddr += PAGE_SIZE;
+
+ src += PAGE_SIZE;
}
obj->mm.dirty = false;
}
@@ -130,7 +130,9 @@ i915_gem_object_put_pages_phys(struct dr
sg_free_table(pages);
kfree(pages);
- drm_pci_free(obj->base.dev, obj->phys_handle);
+ dma_free_coherent(&obj->base.dev->pdev->dev,
+ roundup_pow_of_two(obj->base.size),
+ vaddr, dma);
}
static void phys_release(struct drm_i915_gem_object *obj)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -136,7 +136,7 @@ i915_gem_phys_pwrite(struct drm_i915_gem
struct drm_i915_gem_pwrite *args,
struct drm_file *file)
{
- void *vaddr = obj->phys_handle->vaddr + args->offset;
+ void *vaddr = sg_page(obj->mm.pages->sgl) + args->offset;
char __user *user_data = u64_to_user_ptr(args->data_ptr);
/*
@@ -802,10 +802,10 @@ i915_gem_pwrite_ioctl(struct drm_device
ret = i915_gem_gtt_pwrite_fast(obj, args);
if (ret == -EFAULT || ret == -ENOSPC) {
- if (obj->phys_handle)
- ret = i915_gem_phys_pwrite(obj, args, file);
- else
+ if (i915_gem_object_has_struct_page(obj))
ret = i915_gem_shmem_pwrite(obj, args);
+ else
+ ret = i915_gem_phys_pwrite(obj, args, file);
}
i915_gem_object_unpin_pages(obj);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 075/135] drm/i915: Update drm/i915 bug filing URL
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (73 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 074/135] drm/i915: Wean off drm_pci_alloc/drm_pci_free Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 076/135] sched/psi: Fix OOB write when writing 0 bytes to PSI files Greg Kroah-Hartman
` (63 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Chris Wilson, Jani Nikula
From: Jani Nikula <jani.nikula@intel.com>
commit 7ddc7005a0aa2f43a826b71f5d6bd7d4b90f8f2a upstream.
We've moved from bugzilla to gitlab.
Cc: stable@vger.kernel.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200212160434.6437-2-jani.nikula@intel.com
(cherry picked from commit ddae4d7af0bbe3b2051f1603459a8b24e9a19324)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/Kconfig | 5 ++---
drivers/gpu/drm/i915/i915_gpu_error.c | 3 ++-
drivers/gpu/drm/i915/i915_utils.c | 5 ++---
3 files changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -75,9 +75,8 @@ config DRM_I915_CAPTURE_ERROR
help
This option enables capturing the GPU state when a hang is detected.
This information is vital for triaging hangs and assists in debugging.
- Please report any hang to
- https://bugs.freedesktop.org/enter_bug.cgi?product=DRI
- for triaging.
+ Please report any hang for triaging according to:
+ https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
If in doubt, say "Y".
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1768,7 +1768,8 @@ void i915_capture_error_state(struct drm
if (!xchg(&warned, true) &&
ktime_get_real_seconds() - DRIVER_TIMESTAMP < DAY_AS_SECONDS(180)) {
pr_info("GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.\n");
- pr_info("Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel\n");
+ pr_info("Please file a _new_ bug report at https://gitlab.freedesktop.org/drm/intel/issues/new.\n");
+ pr_info("Please see https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs for details.\n");
pr_info("drm/i915 developers can then reassign to the right component if it's not a kernel issue.\n");
pr_info("The GPU crash dump is required to analyze GPU hangs, so please always attach it.\n");
pr_info("GPU crash dump saved to /sys/class/drm/card%d/error\n",
--- a/drivers/gpu/drm/i915/i915_utils.c
+++ b/drivers/gpu/drm/i915/i915_utils.c
@@ -8,9 +8,8 @@
#include "i915_drv.h"
#include "i915_utils.h"
-#define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
-#define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
- "providing the dmesg log by booting with drm.debug=0xf"
+#define FDO_BUG_URL "https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs"
+#define FDO_BUG_MSG "Please file a bug on drm/i915; see " FDO_BUG_URL " for details."
void
__i915_printk(struct drm_i915_private *dev_priv, const char *level,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 076/135] sched/psi: Fix OOB write when writing 0 bytes to PSI files
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (74 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 075/135] drm/i915: Update drm/i915 bug filing URL Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 077/135] KVM: nVMX: Dont emulate instructions in guest mode Greg Kroah-Hartman
` (62 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Suren Baghdasaryan,
Peter Zijlstra (Intel),
Ingo Molnar, Johannes Weiner
From: Suren Baghdasaryan <surenb@google.com>
commit 6fcca0fa48118e6d63733eb4644c6cd880c15b8f upstream.
Issuing write() with count parameter set to 0 on any file under
/proc/pressure/ will cause an OOB write because of the access to
buf[buf_size-1] when NUL-termination is performed. Fix this by checking
for buf_size to be non-zero.
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lkml.kernel.org/r/20200203212216.7076-1-surenb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/sched/psi.c | 3 +++
1 file changed, 3 insertions(+)
--- a/kernel/sched/psi.c
+++ b/kernel/sched/psi.c
@@ -1199,6 +1199,9 @@ static ssize_t psi_write(struct file *fi
if (static_branch_likely(&psi_disabled))
return -EOPNOTSUPP;
+ if (!nbytes)
+ return -EINVAL;
+
buf_size = min(nbytes, sizeof(buf));
if (copy_from_user(buf, user_buf, buf_size))
return -EFAULT;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 077/135] KVM: nVMX: Dont emulate instructions in guest mode
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (75 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 076/135] sched/psi: Fix OOB write when writing 0 bytes to PSI files Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 078/135] KVM: x86: dont notify userspace IOAPIC on edge-triggered interrupt EOI Greg Kroah-Hartman
` (61 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Oliver Upton, Paolo Bonzini
From: Paolo Bonzini <pbonzini@redhat.com>
commit 07721feee46b4b248402133228235318199b05ec upstream.
vmx_check_intercept is not yet fully implemented. To avoid emulating
instructions disallowed by the L1 hypervisor, refuse to emulate
instructions by default.
Cc: stable@vger.kernel.org
[Made commit, added commit msg - Oliver]
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/vmx/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7151,7 +7151,7 @@ static int vmx_check_intercept(struct kv
}
/* TODO: check more intercepts... */
- return X86EMUL_CONTINUE;
+ return X86EMUL_UNHANDLEABLE;
}
#ifdef CONFIG_X86_64
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 078/135] KVM: x86: dont notify userspace IOAPIC on edge-triggered interrupt EOI
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (76 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 077/135] KVM: nVMX: Dont emulate instructions in guest mode Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:36 ` [PATCH 5.4 079/135] ext4: fix a data race in EXT4_I(inode)->i_disksize Greg Kroah-Hartman
` (60 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Miaohe Lin, Paolo Bonzini
From: Miaohe Lin <linmiaohe@huawei.com>
commit 7455a8327674e1a7c9a1f5dd1b0743ab6713f6d1 upstream.
Commit 13db77347db1 ("KVM: x86: don't notify userspace IOAPIC on edge
EOI") said, edge-triggered interrupts don't set a bit in TMR, which means
that IOAPIC isn't notified on EOI. And var level indicates level-triggered
interrupt.
But commit 3159d36ad799 ("KVM: x86: use generic function for MSI parsing")
replace var level with irq.level by mistake. Fix it by changing irq.level
to irq.trig_mode.
Cc: stable@vger.kernel.org
Fixes: 3159d36ad799 ("KVM: x86: use generic function for MSI parsing")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/irq_comm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -416,7 +416,7 @@ void kvm_scan_ioapic_routes(struct kvm_v
kvm_set_msi_irq(vcpu->kvm, entry, &irq);
- if (irq.level && kvm_apic_match_dest(vcpu, NULL, 0,
+ if (irq.trig_mode && kvm_apic_match_dest(vcpu, NULL, 0,
irq.dest_id, irq.dest_mode))
__set_bit(irq.vector, ioapic_handled_vectors);
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 079/135] ext4: fix a data race in EXT4_I(inode)->i_disksize
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (77 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 078/135] KVM: x86: dont notify userspace IOAPIC on edge-triggered interrupt EOI Greg Kroah-Hartman
@ 2020-02-27 13:36 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 080/135] ext4: add cond_resched() to __ext4_find_entry() Greg Kroah-Hartman
` (59 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:36 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Qian Cai, Theodore Tso, stable
From: Qian Cai <cai@lca.pw>
commit 35df4299a6487f323b0aca120ea3f485dfee2ae3 upstream.
EXT4_I(inode)->i_disksize could be accessed concurrently as noticed by
KCSAN,
BUG: KCSAN: data-race in ext4_write_end [ext4] / ext4_writepages [ext4]
write to 0xffff91c6713b00f8 of 8 bytes by task 49268 on cpu 127:
ext4_write_end+0x4e3/0x750 [ext4]
ext4_update_i_disksize at fs/ext4/ext4.h:3032
(inlined by) ext4_update_inode_size at fs/ext4/ext4.h:3046
(inlined by) ext4_write_end at fs/ext4/inode.c:1287
generic_perform_write+0x208/0x2a0
ext4_buffered_write_iter+0x11f/0x210 [ext4]
ext4_file_write_iter+0xce/0x9e0 [ext4]
new_sync_write+0x29c/0x3b0
__vfs_write+0x92/0xa0
vfs_write+0x103/0x260
ksys_write+0x9d/0x130
__x64_sys_write+0x4c/0x60
do_syscall_64+0x91/0xb47
entry_SYSCALL_64_after_hwframe+0x49/0xbe
read to 0xffff91c6713b00f8 of 8 bytes by task 24872 on cpu 37:
ext4_writepages+0x10ac/0x1d00 [ext4]
mpage_map_and_submit_extent at fs/ext4/inode.c:2468
(inlined by) ext4_writepages at fs/ext4/inode.c:2772
do_writepages+0x5e/0x130
__writeback_single_inode+0xeb/0xb20
writeback_sb_inodes+0x429/0x900
__writeback_inodes_wb+0xc4/0x150
wb_writeback+0x4bd/0x870
wb_workfn+0x6b4/0x960
process_one_work+0x54c/0xbe0
worker_thread+0x80/0x650
kthread+0x1e0/0x200
ret_from_fork+0x27/0x50
Reported by Kernel Concurrency Sanitizer on:
CPU: 37 PID: 24872 Comm: kworker/u261:2 Tainted: G W O L 5.5.0-next-20200204+ #5
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 07/10/2019
Workqueue: writeback wb_workfn (flush-7:0)
Since only the read is operating as lockless (outside of the
"i_data_sem"), load tearing could introduce a logic bug. Fix it by
adding READ_ONCE() for the read and WRITE_ONCE() for the write.
Signed-off-by: Qian Cai <cai@lca.pw>
Link: https://lore.kernel.org/r/1581085751-31793-1-git-send-email-cai@lca.pw
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/ext4.h | 2 +-
fs/ext4/inode.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2969,7 +2969,7 @@ static inline void ext4_update_i_disksiz
!inode_is_locked(inode));
down_write(&EXT4_I(inode)->i_data_sem);
if (newsize > EXT4_I(inode)->i_disksize)
- EXT4_I(inode)->i_disksize = newsize;
+ WRITE_ONCE(EXT4_I(inode)->i_disksize, newsize);
up_write(&EXT4_I(inode)->i_data_sem);
}
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2573,7 +2573,7 @@ update_disksize:
* truncate are avoided by checking i_size under i_data_sem.
*/
disksize = ((loff_t)mpd->first_page) << PAGE_SHIFT;
- if (disksize > EXT4_I(inode)->i_disksize) {
+ if (disksize > READ_ONCE(EXT4_I(inode)->i_disksize)) {
int err2;
loff_t i_size;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 080/135] ext4: add cond_resched() to __ext4_find_entry()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (78 preceding siblings ...)
2020-02-27 13:36 ` [PATCH 5.4 079/135] ext4: fix a data race in EXT4_I(inode)->i_disksize Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 081/135] ext4: fix potential race between online resizing and write operations Greg Kroah-Hartman
` (58 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Shijie Luo, Theodore Tso, Jan Kara, stable
From: Shijie Luo <luoshijie1@huawei.com>
commit 9424ef56e13a1f14c57ea161eed3ecfdc7b2770e upstream.
We tested a soft lockup problem in linux 4.19 which could also
be found in linux 5.x.
When dir inode takes up a large number of blocks, and if the
directory is growing when we are searching, it's possible the
restart branch could be called many times, and the do while loop
could hold cpu a long time.
Here is the call trace in linux 4.19.
[ 473.756186] Call trace:
[ 473.756196] dump_backtrace+0x0/0x198
[ 473.756199] show_stack+0x24/0x30
[ 473.756205] dump_stack+0xa4/0xcc
[ 473.756210] watchdog_timer_fn+0x300/0x3e8
[ 473.756215] __hrtimer_run_queues+0x114/0x358
[ 473.756217] hrtimer_interrupt+0x104/0x2d8
[ 473.756222] arch_timer_handler_virt+0x38/0x58
[ 473.756226] handle_percpu_devid_irq+0x90/0x248
[ 473.756231] generic_handle_irq+0x34/0x50
[ 473.756234] __handle_domain_irq+0x68/0xc0
[ 473.756236] gic_handle_irq+0x6c/0x150
[ 473.756238] el1_irq+0xb8/0x140
[ 473.756286] ext4_es_lookup_extent+0xdc/0x258 [ext4]
[ 473.756310] ext4_map_blocks+0x64/0x5c0 [ext4]
[ 473.756333] ext4_getblk+0x6c/0x1d0 [ext4]
[ 473.756356] ext4_bread_batch+0x7c/0x1f8 [ext4]
[ 473.756379] ext4_find_entry+0x124/0x3f8 [ext4]
[ 473.756402] ext4_lookup+0x8c/0x258 [ext4]
[ 473.756407] __lookup_hash+0x8c/0xe8
[ 473.756411] filename_create+0xa0/0x170
[ 473.756413] do_mkdirat+0x6c/0x140
[ 473.756415] __arm64_sys_mkdirat+0x28/0x38
[ 473.756419] el0_svc_common+0x78/0x130
[ 473.756421] el0_svc_handler+0x38/0x78
[ 473.756423] el0_svc+0x8/0xc
[ 485.755156] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [tmp:5149]
Add cond_resched() to avoid soft lockup and to provide a better
system responding.
Link: https://lore.kernel.org/r/20200215080206.13293-1-luoshijie1@huawei.com
Signed-off-by: Shijie Luo <luoshijie1@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/namei.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1507,6 +1507,7 @@ restart:
/*
* We deal with the read-ahead logic here.
*/
+ cond_resched();
if (ra_ptr >= ra_max) {
/* Refill the readahead buffer */
ra_ptr = 0;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 081/135] ext4: fix potential race between online resizing and write operations
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (79 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 080/135] ext4: add cond_resched() to __ext4_find_entry() Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 082/135] ext4: fix potential race between s_group_info online resizing and access Greg Kroah-Hartman
` (57 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Suraj Jitindar Singh, Theodore Tso, stable
From: Theodore Ts'o <tytso@mit.edu>
commit 1d0c3924a92e69bfa91163bda83c12a994b4d106 upstream.
During an online resize an array of pointers to buffer heads gets
replaced so it can get enlarged. If there is a racing block
allocation or deallocation which uses the old array, and the old array
has gotten reused this can lead to a GPF or some other random kernel
memory getting modified.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206443
Link: https://lore.kernel.org/r/20200221053458.730016-2-tytso@mit.edu
Reported-by: Suraj Jitindar Singh <surajjs@amazon.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/balloc.c | 14 +++++++++++---
fs/ext4/ext4.h | 20 +++++++++++++++++++-
fs/ext4/resize.c | 55 ++++++++++++++++++++++++++++++++++++++++++++-----------
fs/ext4/super.c | 33 +++++++++++++++++++++++----------
4 files changed, 97 insertions(+), 25 deletions(-)
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -270,6 +270,7 @@ struct ext4_group_desc * ext4_get_group_
ext4_group_t ngroups = ext4_get_groups_count(sb);
struct ext4_group_desc *desc;
struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct buffer_head *bh_p;
if (block_group >= ngroups) {
ext4_error(sb, "block_group >= groups_count - block_group = %u,"
@@ -280,7 +281,14 @@ struct ext4_group_desc * ext4_get_group_
group_desc = block_group >> EXT4_DESC_PER_BLOCK_BITS(sb);
offset = block_group & (EXT4_DESC_PER_BLOCK(sb) - 1);
- if (!sbi->s_group_desc[group_desc]) {
+ bh_p = sbi_array_rcu_deref(sbi, s_group_desc, group_desc);
+ /*
+ * sbi_array_rcu_deref returns with rcu unlocked, this is ok since
+ * the pointer being dereferenced won't be dereferenced again. By
+ * looking at the usage in add_new_gdb() the value isn't modified,
+ * just the pointer, and so it remains valid.
+ */
+ if (!bh_p) {
ext4_error(sb, "Group descriptor not loaded - "
"block_group = %u, group_desc = %u, desc = %u",
block_group, group_desc, offset);
@@ -288,10 +296,10 @@ struct ext4_group_desc * ext4_get_group_
}
desc = (struct ext4_group_desc *)(
- (__u8 *)sbi->s_group_desc[group_desc]->b_data +
+ (__u8 *)bh_p->b_data +
offset * EXT4_DESC_SIZE(sb));
if (bh)
- *bh = sbi->s_group_desc[group_desc];
+ *bh = bh_p;
return desc;
}
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1396,7 +1396,7 @@ struct ext4_sb_info {
loff_t s_bitmap_maxbytes; /* max bytes for bitmap files */
struct buffer_head * s_sbh; /* Buffer containing the super block */
struct ext4_super_block *s_es; /* Pointer to the super block in the buffer */
- struct buffer_head **s_group_desc;
+ struct buffer_head * __rcu *s_group_desc;
unsigned int s_mount_opt;
unsigned int s_mount_opt2;
unsigned int s_mount_flags;
@@ -1570,6 +1570,23 @@ static inline int ext4_valid_inum(struct
}
/*
+ * Returns: sbi->field[index]
+ * Used to access an array element from the following sbi fields which require
+ * rcu protection to avoid dereferencing an invalid pointer due to reassignment
+ * - s_group_desc
+ * - s_group_info
+ * - s_flex_group
+ */
+#define sbi_array_rcu_deref(sbi, field, index) \
+({ \
+ typeof(*((sbi)->field)) _v; \
+ rcu_read_lock(); \
+ _v = ((typeof(_v)*)rcu_dereference((sbi)->field))[index]; \
+ rcu_read_unlock(); \
+ _v; \
+})
+
+/*
* Inode dynamic state flags
*/
enum {
@@ -2666,6 +2683,7 @@ extern int ext4_generic_delete_entry(han
extern bool ext4_empty_dir(struct inode *inode);
/* resize.c */
+extern void ext4_kvfree_array_rcu(void *to_free);
extern int ext4_group_add(struct super_block *sb,
struct ext4_new_group_data *input);
extern int ext4_group_extend(struct super_block *sb,
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -17,6 +17,33 @@
#include "ext4_jbd2.h"
+struct ext4_rcu_ptr {
+ struct rcu_head rcu;
+ void *ptr;
+};
+
+static void ext4_rcu_ptr_callback(struct rcu_head *head)
+{
+ struct ext4_rcu_ptr *ptr;
+
+ ptr = container_of(head, struct ext4_rcu_ptr, rcu);
+ kvfree(ptr->ptr);
+ kfree(ptr);
+}
+
+void ext4_kvfree_array_rcu(void *to_free)
+{
+ struct ext4_rcu_ptr *ptr = kzalloc(sizeof(*ptr), GFP_KERNEL);
+
+ if (ptr) {
+ ptr->ptr = to_free;
+ call_rcu(&ptr->rcu, ext4_rcu_ptr_callback);
+ return;
+ }
+ synchronize_rcu();
+ kvfree(to_free);
+}
+
int ext4_resize_begin(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -560,8 +587,8 @@ static int setup_new_flex_group_blocks(s
brelse(gdb);
goto out;
}
- memcpy(gdb->b_data, sbi->s_group_desc[j]->b_data,
- gdb->b_size);
+ memcpy(gdb->b_data, sbi_array_rcu_deref(sbi,
+ s_group_desc, j)->b_data, gdb->b_size);
set_buffer_uptodate(gdb);
err = ext4_handle_dirty_metadata(handle, NULL, gdb);
@@ -879,13 +906,15 @@ static int add_new_gdb(handle_t *handle,
}
brelse(dind);
- o_group_desc = EXT4_SB(sb)->s_group_desc;
+ rcu_read_lock();
+ o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc);
memcpy(n_group_desc, o_group_desc,
EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
+ rcu_read_unlock();
n_group_desc[gdb_num] = gdb_bh;
- EXT4_SB(sb)->s_group_desc = n_group_desc;
+ rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc);
EXT4_SB(sb)->s_gdb_count++;
- kvfree(o_group_desc);
+ ext4_kvfree_array_rcu(o_group_desc);
le16_add_cpu(&es->s_reserved_gdt_blocks, -1);
err = ext4_handle_dirty_super(handle, sb);
@@ -929,9 +958,11 @@ static int add_new_gdb_meta_bg(struct su
return err;
}
- o_group_desc = EXT4_SB(sb)->s_group_desc;
+ rcu_read_lock();
+ o_group_desc = rcu_dereference(EXT4_SB(sb)->s_group_desc);
memcpy(n_group_desc, o_group_desc,
EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
+ rcu_read_unlock();
n_group_desc[gdb_num] = gdb_bh;
BUFFER_TRACE(gdb_bh, "get_write_access");
@@ -942,9 +973,9 @@ static int add_new_gdb_meta_bg(struct su
return err;
}
- EXT4_SB(sb)->s_group_desc = n_group_desc;
+ rcu_assign_pointer(EXT4_SB(sb)->s_group_desc, n_group_desc);
EXT4_SB(sb)->s_gdb_count++;
- kvfree(o_group_desc);
+ ext4_kvfree_array_rcu(o_group_desc);
return err;
}
@@ -1210,7 +1241,8 @@ static int ext4_add_new_descs(handle_t *
* use non-sparse filesystems anymore. This is already checked above.
*/
if (gdb_off) {
- gdb_bh = sbi->s_group_desc[gdb_num];
+ gdb_bh = sbi_array_rcu_deref(sbi, s_group_desc,
+ gdb_num);
BUFFER_TRACE(gdb_bh, "get_write_access");
err = ext4_journal_get_write_access(handle, gdb_bh);
@@ -1292,7 +1324,7 @@ static int ext4_setup_new_descs(handle_t
/*
* get_write_access() has been called on gdb_bh by ext4_add_new_desc().
*/
- gdb_bh = sbi->s_group_desc[gdb_num];
+ gdb_bh = sbi_array_rcu_deref(sbi, s_group_desc, gdb_num);
/* Update group descriptor block for new group */
gdp = (struct ext4_group_desc *)(gdb_bh->b_data +
gdb_off * EXT4_DESC_SIZE(sb));
@@ -1519,7 +1551,8 @@ exit_journal:
for (; gdb_num <= gdb_num_end; gdb_num++) {
struct buffer_head *gdb_bh;
- gdb_bh = sbi->s_group_desc[gdb_num];
+ gdb_bh = sbi_array_rcu_deref(sbi, s_group_desc,
+ gdb_num);
if (old_gdb == gdb_bh->b_blocknr)
continue;
update_backups(sb, gdb_bh->b_blocknr, gdb_bh->b_data,
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -970,6 +970,7 @@ static void ext4_put_super(struct super_
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
+ struct buffer_head **group_desc;
int aborted = 0;
int i, err;
@@ -1000,9 +1001,12 @@ static void ext4_put_super(struct super_
if (!sb_rdonly(sb))
ext4_commit_super(sb, 1);
+ rcu_read_lock();
+ group_desc = rcu_dereference(sbi->s_group_desc);
for (i = 0; i < sbi->s_gdb_count; i++)
- brelse(sbi->s_group_desc[i]);
- kvfree(sbi->s_group_desc);
+ brelse(group_desc[i]);
+ kvfree(group_desc);
+ rcu_read_unlock();
kvfree(sbi->s_flex_groups);
percpu_counter_destroy(&sbi->s_freeclusters_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
@@ -3586,7 +3590,7 @@ static int ext4_fill_super(struct super_
{
struct dax_device *dax_dev = fs_dax_get_by_bdev(sb->s_bdev);
char *orig_data = kstrdup(data, GFP_KERNEL);
- struct buffer_head *bh;
+ struct buffer_head *bh, **group_desc;
struct ext4_super_block *es = NULL;
struct ext4_sb_info *sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
ext4_fsblk_t block;
@@ -4242,9 +4246,10 @@ static int ext4_fill_super(struct super_
goto failed_mount;
}
}
- sbi->s_group_desc = kvmalloc_array(db_count,
- sizeof(struct buffer_head *),
- GFP_KERNEL);
+ rcu_assign_pointer(sbi->s_group_desc,
+ kvmalloc_array(db_count,
+ sizeof(struct buffer_head *),
+ GFP_KERNEL));
if (sbi->s_group_desc == NULL) {
ext4_msg(sb, KERN_ERR, "not enough memory");
ret = -ENOMEM;
@@ -4260,14 +4265,19 @@ static int ext4_fill_super(struct super_
}
for (i = 0; i < db_count; i++) {
+ struct buffer_head *bh;
+
block = descriptor_loc(sb, logical_sb_block, i);
- sbi->s_group_desc[i] = sb_bread_unmovable(sb, block);
- if (!sbi->s_group_desc[i]) {
+ bh = sb_bread_unmovable(sb, block);
+ if (!bh) {
ext4_msg(sb, KERN_ERR,
"can't read group descriptor %d", i);
db_count = i;
goto failed_mount2;
}
+ rcu_read_lock();
+ rcu_dereference(sbi->s_group_desc)[i] = bh;
+ rcu_read_unlock();
}
sbi->s_gdb_count = db_count;
if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) {
@@ -4676,9 +4686,12 @@ failed_mount3:
if (sbi->s_mmp_tsk)
kthread_stop(sbi->s_mmp_tsk);
failed_mount2:
+ rcu_read_lock();
+ group_desc = rcu_dereference(sbi->s_group_desc);
for (i = 0; i < db_count; i++)
- brelse(sbi->s_group_desc[i]);
- kvfree(sbi->s_group_desc);
+ brelse(group_desc[i]);
+ kvfree(group_desc);
+ rcu_read_unlock();
failed_mount:
if (sbi->s_chksum_driver)
crypto_free_shash(sbi->s_chksum_driver);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 082/135] ext4: fix potential race between s_group_info online resizing and access
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (80 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 081/135] ext4: fix potential race between online resizing and write operations Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 083/135] ext4: fix potential race between s_flex_groups " Greg Kroah-Hartman
` (56 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Suraj Jitindar Singh, Theodore Tso,
Balbir Singh, stable
From: Suraj Jitindar Singh <surajjs@amazon.com>
commit df3da4ea5a0fc5d115c90d5aa6caa4dd433750a7 upstream.
During an online resize an array of pointers to s_group_info gets replaced
so it can get enlarged. If there is a concurrent access to the array in
ext4_get_group_info() and this memory has been reused then this can lead to
an invalid memory access.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206443
Link: https://lore.kernel.org/r/20200221053458.730016-3-tytso@mit.edu
Signed-off-by: Suraj Jitindar Singh <surajjs@amazon.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Balbir Singh <sblbir@amazon.com>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/ext4.h | 8 ++++----
fs/ext4/mballoc.c | 52 +++++++++++++++++++++++++++++++++++-----------------
2 files changed, 39 insertions(+), 21 deletions(-)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1458,7 +1458,7 @@ struct ext4_sb_info {
#endif
/* for buddy allocator */
- struct ext4_group_info ***s_group_info;
+ struct ext4_group_info ** __rcu *s_group_info;
struct inode *s_buddy_cache;
spinlock_t s_md_lock;
unsigned short *s_mb_offsets;
@@ -2931,13 +2931,13 @@ static inline
struct ext4_group_info *ext4_get_group_info(struct super_block *sb,
ext4_group_t group)
{
- struct ext4_group_info ***grp_info;
+ struct ext4_group_info **grp_info;
long indexv, indexh;
BUG_ON(group >= EXT4_SB(sb)->s_groups_count);
- grp_info = EXT4_SB(sb)->s_group_info;
indexv = group >> (EXT4_DESC_PER_BLOCK_BITS(sb));
indexh = group & ((EXT4_DESC_PER_BLOCK(sb)) - 1);
- return grp_info[indexv][indexh];
+ grp_info = sbi_array_rcu_deref(EXT4_SB(sb), s_group_info, indexv);
+ return grp_info[indexh];
}
/*
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2356,7 +2356,7 @@ int ext4_mb_alloc_groupinfo(struct super
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
unsigned size;
- struct ext4_group_info ***new_groupinfo;
+ struct ext4_group_info ***old_groupinfo, ***new_groupinfo;
size = (ngroups + EXT4_DESC_PER_BLOCK(sb) - 1) >>
EXT4_DESC_PER_BLOCK_BITS(sb);
@@ -2369,13 +2369,16 @@ int ext4_mb_alloc_groupinfo(struct super
ext4_msg(sb, KERN_ERR, "can't allocate buddy meta group");
return -ENOMEM;
}
- if (sbi->s_group_info) {
- memcpy(new_groupinfo, sbi->s_group_info,
+ rcu_read_lock();
+ old_groupinfo = rcu_dereference(sbi->s_group_info);
+ if (old_groupinfo)
+ memcpy(new_groupinfo, old_groupinfo,
sbi->s_group_info_size * sizeof(*sbi->s_group_info));
- kvfree(sbi->s_group_info);
- }
- sbi->s_group_info = new_groupinfo;
+ rcu_read_unlock();
+ rcu_assign_pointer(sbi->s_group_info, new_groupinfo);
sbi->s_group_info_size = size / sizeof(*sbi->s_group_info);
+ if (old_groupinfo)
+ ext4_kvfree_array_rcu(old_groupinfo);
ext4_debug("allocated s_groupinfo array for %d meta_bg's\n",
sbi->s_group_info_size);
return 0;
@@ -2387,6 +2390,7 @@ int ext4_mb_add_groupinfo(struct super_b
{
int i;
int metalen = 0;
+ int idx = group >> EXT4_DESC_PER_BLOCK_BITS(sb);
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_group_info **meta_group_info;
struct kmem_cache *cachep = get_groupinfo_cache(sb->s_blocksize_bits);
@@ -2405,12 +2409,12 @@ int ext4_mb_add_groupinfo(struct super_b
"for a buddy group");
goto exit_meta_group_info;
}
- sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)] =
- meta_group_info;
+ rcu_read_lock();
+ rcu_dereference(sbi->s_group_info)[idx] = meta_group_info;
+ rcu_read_unlock();
}
- meta_group_info =
- sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)];
+ meta_group_info = sbi_array_rcu_deref(sbi, s_group_info, idx);
i = group & (EXT4_DESC_PER_BLOCK(sb) - 1);
meta_group_info[i] = kmem_cache_zalloc(cachep, GFP_NOFS);
@@ -2458,8 +2462,13 @@ int ext4_mb_add_groupinfo(struct super_b
exit_group_info:
/* If a meta_group_info table has been allocated, release it now */
if (group % EXT4_DESC_PER_BLOCK(sb) == 0) {
- kfree(sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)]);
- sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)] = NULL;
+ struct ext4_group_info ***group_info;
+
+ rcu_read_lock();
+ group_info = rcu_dereference(sbi->s_group_info);
+ kfree(group_info[idx]);
+ group_info[idx] = NULL;
+ rcu_read_unlock();
}
exit_meta_group_info:
return -ENOMEM;
@@ -2472,6 +2481,7 @@ static int ext4_mb_init_backend(struct s
struct ext4_sb_info *sbi = EXT4_SB(sb);
int err;
struct ext4_group_desc *desc;
+ struct ext4_group_info ***group_info;
struct kmem_cache *cachep;
err = ext4_mb_alloc_groupinfo(sb, ngroups);
@@ -2507,11 +2517,16 @@ err_freebuddy:
while (i-- > 0)
kmem_cache_free(cachep, ext4_get_group_info(sb, i));
i = sbi->s_group_info_size;
+ rcu_read_lock();
+ group_info = rcu_dereference(sbi->s_group_info);
while (i-- > 0)
- kfree(sbi->s_group_info[i]);
+ kfree(group_info[i]);
+ rcu_read_unlock();
iput(sbi->s_buddy_cache);
err_freesgi:
- kvfree(sbi->s_group_info);
+ rcu_read_lock();
+ kvfree(rcu_dereference(sbi->s_group_info));
+ rcu_read_unlock();
return -ENOMEM;
}
@@ -2700,7 +2715,7 @@ int ext4_mb_release(struct super_block *
ext4_group_t ngroups = ext4_get_groups_count(sb);
ext4_group_t i;
int num_meta_group_infos;
- struct ext4_group_info *grinfo;
+ struct ext4_group_info *grinfo, ***group_info;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct kmem_cache *cachep = get_groupinfo_cache(sb->s_blocksize_bits);
@@ -2719,9 +2734,12 @@ int ext4_mb_release(struct super_block *
num_meta_group_infos = (ngroups +
EXT4_DESC_PER_BLOCK(sb) - 1) >>
EXT4_DESC_PER_BLOCK_BITS(sb);
+ rcu_read_lock();
+ group_info = rcu_dereference(sbi->s_group_info);
for (i = 0; i < num_meta_group_infos; i++)
- kfree(sbi->s_group_info[i]);
- kvfree(sbi->s_group_info);
+ kfree(group_info[i]);
+ kvfree(group_info);
+ rcu_read_unlock();
}
kfree(sbi->s_mb_offsets);
kfree(sbi->s_mb_maxs);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 083/135] ext4: fix potential race between s_flex_groups online resizing and access
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (81 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 082/135] ext4: fix potential race between s_group_info online resizing and access Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 084/135] ext4: fix mount failure with quota configured as module Greg Kroah-Hartman
` (55 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Suraj Jitindar Singh, Theodore Tso, stable
From: Suraj Jitindar Singh <surajjs@amazon.com>
commit 7c990728b99ed6fbe9c75fc202fce1172d9916da upstream.
During an online resize an array of s_flex_groups structures gets replaced
so it can get enlarged. If there is a concurrent access to the array and
this memory has been reused then this can lead to an invalid memory access.
The s_flex_group array has been converted into an array of pointers rather
than an array of structures. This is to ensure that the information
contained in the structures cannot get out of sync during a resize due to
an accessor updating the value in the old structure after it has been
copied but before the array pointer is updated. Since the structures them-
selves are no longer copied but only the pointers to them this case is
mitigated.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206443
Link: https://lore.kernel.org/r/20200221053458.730016-4-tytso@mit.edu
Signed-off-by: Suraj Jitindar Singh <surajjs@amazon.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/ext4.h | 2 -
fs/ext4/ialloc.c | 23 ++++++++++-------
fs/ext4/mballoc.c | 9 ++++--
fs/ext4/resize.c | 7 +++--
fs/ext4/super.c | 72 +++++++++++++++++++++++++++++++++++++-----------------
5 files changed, 76 insertions(+), 37 deletions(-)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1508,7 +1508,7 @@ struct ext4_sb_info {
unsigned int s_extent_max_zeroout_kb;
unsigned int s_log_groups_per_flex;
- struct flex_groups *s_flex_groups;
+ struct flex_groups * __rcu *s_flex_groups;
ext4_group_t s_flex_groups_allocated;
/* workqueue for reserved extent conversions (buffered io) */
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -325,11 +325,13 @@ void ext4_free_inode(handle_t *handle, s
percpu_counter_inc(&sbi->s_freeinodes_counter);
if (sbi->s_log_groups_per_flex) {
- ext4_group_t f = ext4_flex_group(sbi, block_group);
+ struct flex_groups *fg;
- atomic_inc(&sbi->s_flex_groups[f].free_inodes);
+ fg = sbi_array_rcu_deref(sbi, s_flex_groups,
+ ext4_flex_group(sbi, block_group));
+ atomic_inc(&fg->free_inodes);
if (is_directory)
- atomic_dec(&sbi->s_flex_groups[f].used_dirs);
+ atomic_dec(&fg->used_dirs);
}
BUFFER_TRACE(bh2, "call ext4_handle_dirty_metadata");
fatal = ext4_handle_dirty_metadata(handle, NULL, bh2);
@@ -365,12 +367,13 @@ static void get_orlov_stats(struct super
int flex_size, struct orlov_stats *stats)
{
struct ext4_group_desc *desc;
- struct flex_groups *flex_group = EXT4_SB(sb)->s_flex_groups;
if (flex_size > 1) {
- stats->free_inodes = atomic_read(&flex_group[g].free_inodes);
- stats->free_clusters = atomic64_read(&flex_group[g].free_clusters);
- stats->used_dirs = atomic_read(&flex_group[g].used_dirs);
+ struct flex_groups *fg = sbi_array_rcu_deref(EXT4_SB(sb),
+ s_flex_groups, g);
+ stats->free_inodes = atomic_read(&fg->free_inodes);
+ stats->free_clusters = atomic64_read(&fg->free_clusters);
+ stats->used_dirs = atomic_read(&fg->used_dirs);
return;
}
@@ -1051,7 +1054,8 @@ got:
if (sbi->s_log_groups_per_flex) {
ext4_group_t f = ext4_flex_group(sbi, group);
- atomic_inc(&sbi->s_flex_groups[f].used_dirs);
+ atomic_inc(&sbi_array_rcu_deref(sbi, s_flex_groups,
+ f)->used_dirs);
}
}
if (ext4_has_group_desc_csum(sb)) {
@@ -1074,7 +1078,8 @@ got:
if (sbi->s_log_groups_per_flex) {
flex_group = ext4_flex_group(sbi, group);
- atomic_dec(&sbi->s_flex_groups[flex_group].free_inodes);
+ atomic_dec(&sbi_array_rcu_deref(sbi, s_flex_groups,
+ flex_group)->free_inodes);
}
inode->i_ino = ino + group * EXT4_INODES_PER_GROUP(sb);
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3038,7 +3038,8 @@ ext4_mb_mark_diskspace_used(struct ext4_
ext4_group_t flex_group = ext4_flex_group(sbi,
ac->ac_b_ex.fe_group);
atomic64_sub(ac->ac_b_ex.fe_len,
- &sbi->s_flex_groups[flex_group].free_clusters);
+ &sbi_array_rcu_deref(sbi, s_flex_groups,
+ flex_group)->free_clusters);
}
err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
@@ -4932,7 +4933,8 @@ do_more:
if (sbi->s_log_groups_per_flex) {
ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
atomic64_add(count_clusters,
- &sbi->s_flex_groups[flex_group].free_clusters);
+ &sbi_array_rcu_deref(sbi, s_flex_groups,
+ flex_group)->free_clusters);
}
/*
@@ -5089,7 +5091,8 @@ int ext4_group_add_blocks(handle_t *hand
if (sbi->s_log_groups_per_flex) {
ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
atomic64_add(clusters_freed,
- &sbi->s_flex_groups[flex_group].free_clusters);
+ &sbi_array_rcu_deref(sbi, s_flex_groups,
+ flex_group)->free_clusters);
}
ext4_mb_unload_buddy(&e4b);
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1452,11 +1452,14 @@ static void ext4_update_super(struct sup
percpu_counter_read(&sbi->s_freeclusters_counter));
if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) {
ext4_group_t flex_group;
+ struct flex_groups *fg;
+
flex_group = ext4_flex_group(sbi, group_data[0].group);
+ fg = sbi_array_rcu_deref(sbi, s_flex_groups, flex_group);
atomic64_add(EXT4_NUM_B2C(sbi, free_blocks),
- &sbi->s_flex_groups[flex_group].free_clusters);
+ &fg->free_clusters);
atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count,
- &sbi->s_flex_groups[flex_group].free_inodes);
+ &fg->free_inodes);
}
/*
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -971,6 +971,7 @@ static void ext4_put_super(struct super_
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
struct buffer_head **group_desc;
+ struct flex_groups **flex_groups;
int aborted = 0;
int i, err;
@@ -1006,8 +1007,13 @@ static void ext4_put_super(struct super_
for (i = 0; i < sbi->s_gdb_count; i++)
brelse(group_desc[i]);
kvfree(group_desc);
+ flex_groups = rcu_dereference(sbi->s_flex_groups);
+ if (flex_groups) {
+ for (i = 0; i < sbi->s_flex_groups_allocated; i++)
+ kvfree(flex_groups[i]);
+ kvfree(flex_groups);
+ }
rcu_read_unlock();
- kvfree(sbi->s_flex_groups);
percpu_counter_destroy(&sbi->s_freeclusters_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
@@ -2336,8 +2342,8 @@ done:
int ext4_alloc_flex_bg_array(struct super_block *sb, ext4_group_t ngroup)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- struct flex_groups *new_groups;
- int size;
+ struct flex_groups **old_groups, **new_groups;
+ int size, i;
if (!sbi->s_log_groups_per_flex)
return 0;
@@ -2346,22 +2352,37 @@ int ext4_alloc_flex_bg_array(struct supe
if (size <= sbi->s_flex_groups_allocated)
return 0;
- size = roundup_pow_of_two(size * sizeof(struct flex_groups));
- new_groups = kvzalloc(size, GFP_KERNEL);
+ new_groups = kvzalloc(roundup_pow_of_two(size *
+ sizeof(*sbi->s_flex_groups)), GFP_KERNEL);
if (!new_groups) {
- ext4_msg(sb, KERN_ERR, "not enough memory for %d flex groups",
- size / (int) sizeof(struct flex_groups));
+ ext4_msg(sb, KERN_ERR,
+ "not enough memory for %d flex group pointers", size);
return -ENOMEM;
}
-
- if (sbi->s_flex_groups) {
- memcpy(new_groups, sbi->s_flex_groups,
- (sbi->s_flex_groups_allocated *
- sizeof(struct flex_groups)));
- kvfree(sbi->s_flex_groups);
+ for (i = sbi->s_flex_groups_allocated; i < size; i++) {
+ new_groups[i] = kvzalloc(roundup_pow_of_two(
+ sizeof(struct flex_groups)),
+ GFP_KERNEL);
+ if (!new_groups[i]) {
+ for (i--; i >= sbi->s_flex_groups_allocated; i--)
+ kvfree(new_groups[i]);
+ kvfree(new_groups);
+ ext4_msg(sb, KERN_ERR,
+ "not enough memory for %d flex groups", size);
+ return -ENOMEM;
+ }
}
- sbi->s_flex_groups = new_groups;
- sbi->s_flex_groups_allocated = size / sizeof(struct flex_groups);
+ rcu_read_lock();
+ old_groups = rcu_dereference(sbi->s_flex_groups);
+ if (old_groups)
+ memcpy(new_groups, old_groups,
+ (sbi->s_flex_groups_allocated *
+ sizeof(struct flex_groups *)));
+ rcu_read_unlock();
+ rcu_assign_pointer(sbi->s_flex_groups, new_groups);
+ sbi->s_flex_groups_allocated = size;
+ if (old_groups)
+ ext4_kvfree_array_rcu(old_groups);
return 0;
}
@@ -2369,6 +2390,7 @@ static int ext4_fill_flex_info(struct su
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_group_desc *gdp = NULL;
+ struct flex_groups *fg;
ext4_group_t flex_group;
int i, err;
@@ -2386,12 +2408,11 @@ static int ext4_fill_flex_info(struct su
gdp = ext4_get_group_desc(sb, i, NULL);
flex_group = ext4_flex_group(sbi, i);
- atomic_add(ext4_free_inodes_count(sb, gdp),
- &sbi->s_flex_groups[flex_group].free_inodes);
+ fg = sbi_array_rcu_deref(sbi, s_flex_groups, flex_group);
+ atomic_add(ext4_free_inodes_count(sb, gdp), &fg->free_inodes);
atomic64_add(ext4_free_group_clusters(sb, gdp),
- &sbi->s_flex_groups[flex_group].free_clusters);
- atomic_add(ext4_used_dirs_count(sb, gdp),
- &sbi->s_flex_groups[flex_group].used_dirs);
+ &fg->free_clusters);
+ atomic_add(ext4_used_dirs_count(sb, gdp), &fg->used_dirs);
}
return 1;
@@ -3593,6 +3614,7 @@ static int ext4_fill_super(struct super_
struct buffer_head *bh, **group_desc;
struct ext4_super_block *es = NULL;
struct ext4_sb_info *sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
+ struct flex_groups **flex_groups;
ext4_fsblk_t block;
ext4_fsblk_t sb_block = get_sb_block(&data);
ext4_fsblk_t logical_sb_block;
@@ -4651,8 +4673,14 @@ failed_mount7:
ext4_unregister_li_request(sb);
failed_mount6:
ext4_mb_release(sb);
- if (sbi->s_flex_groups)
- kvfree(sbi->s_flex_groups);
+ rcu_read_lock();
+ flex_groups = rcu_dereference(sbi->s_flex_groups);
+ if (flex_groups) {
+ for (i = 0; i < sbi->s_flex_groups_allocated; i++)
+ kvfree(flex_groups[i]);
+ kvfree(flex_groups);
+ }
+ rcu_read_unlock();
percpu_counter_destroy(&sbi->s_freeclusters_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 084/135] ext4: fix mount failure with quota configured as module
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (82 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 083/135] ext4: fix potential race between s_flex_groups " Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 085/135] ext4: rename s_journal_flag_rwsem to s_writepages_rwsem Greg Kroah-Hartman
` (54 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Jan Kara, Theodore Tso, stable
From: Jan Kara <jack@suse.cz>
commit 9db176bceb5c5df4990486709da386edadc6bd1d upstream.
When CONFIG_QFMT_V2 is configured as a module, the test in
ext4_feature_set_ok() fails and so mount of filesystems with quota or
project features fails. Fix the test to use IS_ENABLED macro which
works properly even for modules.
Link: https://lore.kernel.org/r/20200221100835.9332-1-jack@suse.cz
Fixes: d65d87a07476 ("ext4: improve explanation of a mount failure caused by a misconfigured kernel")
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2986,7 +2986,7 @@ static int ext4_feature_set_ok(struct su
return 0;
}
-#if !defined(CONFIG_QUOTA) || !defined(CONFIG_QFMT_V2)
+#if !IS_ENABLED(CONFIG_QUOTA) || !IS_ENABLED(CONFIG_QFMT_V2)
if (!readonly && (ext4_has_feature_quota(sb) ||
ext4_has_feature_project(sb))) {
ext4_msg(sb, KERN_ERR,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 085/135] ext4: rename s_journal_flag_rwsem to s_writepages_rwsem
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (83 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 084/135] ext4: fix mount failure with quota configured as module Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 086/135] ext4: fix race between writepages and enabling EXT4_EXTENTS_FL Greg Kroah-Hartman
` (53 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Eric Biggers, Theodore Tso, Jan Kara, stable
From: Eric Biggers <ebiggers@google.com>
commit bbd55937de8f2754adc5792b0f8e5ff7d9c0420e upstream.
In preparation for making s_journal_flag_rwsem synchronize
ext4_writepages() with changes to both the EXTENTS and JOURNAL_DATA
flags (rather than just JOURNAL_DATA as it does currently), rename it to
s_writepages_rwsem.
Link: https://lore.kernel.org/r/20200219183047.47417-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/ext4.h | 2 +-
fs/ext4/inode.c | 14 +++++++-------
fs/ext4/super.c | 6 +++---
3 files changed, 11 insertions(+), 11 deletions(-)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1549,7 +1549,7 @@ struct ext4_sb_info {
struct ratelimit_state s_msg_ratelimit_state;
/* Barrier between changing inodes' journal flags and writepages ops. */
- struct percpu_rw_semaphore s_journal_flag_rwsem;
+ struct percpu_rw_semaphore s_writepages_rwsem;
struct dax_device *s_daxdev;
};
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2734,7 +2734,7 @@ static int ext4_writepages(struct addres
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return -EIO;
- percpu_down_read(&sbi->s_journal_flag_rwsem);
+ percpu_down_read(&sbi->s_writepages_rwsem);
trace_ext4_writepages(inode, wbc);
/*
@@ -2955,7 +2955,7 @@ unplug:
out_writepages:
trace_ext4_writepages_result(inode, wbc, ret,
nr_to_write - wbc->nr_to_write);
- percpu_up_read(&sbi->s_journal_flag_rwsem);
+ percpu_up_read(&sbi->s_writepages_rwsem);
return ret;
}
@@ -2970,13 +2970,13 @@ static int ext4_dax_writepages(struct ad
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return -EIO;
- percpu_down_read(&sbi->s_journal_flag_rwsem);
+ percpu_down_read(&sbi->s_writepages_rwsem);
trace_ext4_writepages(inode, wbc);
ret = dax_writeback_mapping_range(mapping, inode->i_sb->s_bdev, wbc);
trace_ext4_writepages_result(inode, wbc, ret,
nr_to_write - wbc->nr_to_write);
- percpu_up_read(&sbi->s_journal_flag_rwsem);
+ percpu_up_read(&sbi->s_writepages_rwsem);
return ret;
}
@@ -6185,7 +6185,7 @@ int ext4_change_inode_journal_flag(struc
}
}
- percpu_down_write(&sbi->s_journal_flag_rwsem);
+ percpu_down_write(&sbi->s_writepages_rwsem);
jbd2_journal_lock_updates(journal);
/*
@@ -6202,7 +6202,7 @@ int ext4_change_inode_journal_flag(struc
err = jbd2_journal_flush(journal);
if (err < 0) {
jbd2_journal_unlock_updates(journal);
- percpu_up_write(&sbi->s_journal_flag_rwsem);
+ percpu_up_write(&sbi->s_writepages_rwsem);
return err;
}
ext4_clear_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
@@ -6210,7 +6210,7 @@ int ext4_change_inode_journal_flag(struc
ext4_set_aops(inode);
jbd2_journal_unlock_updates(journal);
- percpu_up_write(&sbi->s_journal_flag_rwsem);
+ percpu_up_write(&sbi->s_writepages_rwsem);
if (val)
up_write(&EXT4_I(inode)->i_mmap_sem);
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1018,7 +1018,7 @@ static void ext4_put_super(struct super_
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
- percpu_free_rwsem(&sbi->s_journal_flag_rwsem);
+ percpu_free_rwsem(&sbi->s_writepages_rwsem);
#ifdef CONFIG_QUOTA
for (i = 0; i < EXT4_MAXQUOTAS; i++)
kfree(get_qf_name(sb, sbi, i));
@@ -4585,7 +4585,7 @@ no_journal:
err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0,
GFP_KERNEL);
if (!err)
- err = percpu_init_rwsem(&sbi->s_journal_flag_rwsem);
+ err = percpu_init_rwsem(&sbi->s_writepages_rwsem);
if (err) {
ext4_msg(sb, KERN_ERR, "insufficient memory");
@@ -4685,7 +4685,7 @@ failed_mount6:
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
- percpu_free_rwsem(&sbi->s_journal_flag_rwsem);
+ percpu_free_rwsem(&sbi->s_writepages_rwsem);
failed_mount5:
ext4_ext_release(sb);
ext4_release_system_zone(sb);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 086/135] ext4: fix race between writepages and enabling EXT4_EXTENTS_FL
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (84 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 085/135] ext4: rename s_journal_flag_rwsem to s_writepages_rwsem Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 087/135] KVM: nVMX: Refactor IO bitmap checks into helper function Greg Kroah-Hartman
` (52 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, syzbot+2202a584a00fffd19fbf,
Eric Biggers, Theodore Tso, Jan Kara, stable
From: Eric Biggers <ebiggers@google.com>
commit cb85f4d23f794e24127f3e562cb3b54b0803f456 upstream.
If EXT4_EXTENTS_FL is set on an inode while ext4_writepages() is running
on it, the following warning in ext4_add_complete_io() can be hit:
WARNING: CPU: 1 PID: 0 at fs/ext4/page-io.c:234 ext4_put_io_end_defer+0xf0/0x120
Here's a minimal reproducer (not 100% reliable) (root isn't required):
while true; do
sync
done &
while true; do
rm -f file
touch file
chattr -e file
echo X >> file
chattr +e file
done
The problem is that in ext4_writepages(), ext4_should_dioread_nolock()
(which only returns true on extent-based files) is checked once to set
the number of reserved journal credits, and also again later to select
the flags for ext4_map_blocks() and copy the reserved journal handle to
ext4_io_end::handle. But if EXT4_EXTENTS_FL is being concurrently set,
the first check can see dioread_nolock disabled while the later one can
see it enabled, causing the reserved handle to unexpectedly be NULL.
Since changing EXT4_EXTENTS_FL is uncommon, and there may be other races
related to doing so as well, fix this by synchronizing changing
EXT4_EXTENTS_FL with ext4_writepages() via the existing
s_writepages_rwsem (previously called s_journal_flag_rwsem).
This was originally reported by syzbot without a reproducer at
https://syzkaller.appspot.com/bug?extid=2202a584a00fffd19fbf,
but now that dioread_nolock is the default I also started seeing this
when running syzkaller locally.
Link: https://lore.kernel.org/r/20200219183047.47417-3-ebiggers@kernel.org
Reported-by: syzbot+2202a584a00fffd19fbf@syzkaller.appspotmail.com
Fixes: 6b523df4fb5a ("ext4: use transaction reservation for extent conversion in ext4_end_io")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/ext4.h | 5 ++++-
fs/ext4/migrate.c | 27 +++++++++++++++++++--------
2 files changed, 23 insertions(+), 9 deletions(-)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1548,7 +1548,10 @@ struct ext4_sb_info {
struct ratelimit_state s_warning_ratelimit_state;
struct ratelimit_state s_msg_ratelimit_state;
- /* Barrier between changing inodes' journal flags and writepages ops. */
+ /*
+ * Barrier between writepages ops and changing any inode's JOURNAL_DATA
+ * or EXTENTS flag.
+ */
struct percpu_rw_semaphore s_writepages_rwsem;
struct dax_device *s_daxdev;
};
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -427,6 +427,7 @@ static int free_ext_block(handle_t *hand
int ext4_ext_migrate(struct inode *inode)
{
+ struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
handle_t *handle;
int retval = 0, i;
__le32 *i_data;
@@ -451,6 +452,8 @@ int ext4_ext_migrate(struct inode *inode
*/
return retval;
+ percpu_down_write(&sbi->s_writepages_rwsem);
+
/*
* Worst case we can touch the allocation bitmaps, a bgd
* block, and a block to link in the orphan list. We do need
@@ -461,7 +464,7 @@ int ext4_ext_migrate(struct inode *inode
if (IS_ERR(handle)) {
retval = PTR_ERR(handle);
- return retval;
+ goto out_unlock;
}
goal = (((inode->i_ino - 1) / EXT4_INODES_PER_GROUP(inode->i_sb)) *
EXT4_INODES_PER_GROUP(inode->i_sb)) + 1;
@@ -472,7 +475,7 @@ int ext4_ext_migrate(struct inode *inode
if (IS_ERR(tmp_inode)) {
retval = PTR_ERR(tmp_inode);
ext4_journal_stop(handle);
- return retval;
+ goto out_unlock;
}
i_size_write(tmp_inode, i_size_read(inode));
/*
@@ -514,7 +517,7 @@ int ext4_ext_migrate(struct inode *inode
*/
ext4_orphan_del(NULL, tmp_inode);
retval = PTR_ERR(handle);
- goto out;
+ goto out_tmp_inode;
}
ei = EXT4_I(inode);
@@ -595,10 +598,11 @@ err_out:
/* Reset the extent details */
ext4_ext_tree_init(handle, tmp_inode);
ext4_journal_stop(handle);
-out:
+out_tmp_inode:
unlock_new_inode(tmp_inode);
iput(tmp_inode);
-
+out_unlock:
+ percpu_up_write(&sbi->s_writepages_rwsem);
return retval;
}
@@ -608,7 +612,8 @@ out:
int ext4_ind_migrate(struct inode *inode)
{
struct ext4_extent_header *eh;
- struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
+ struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+ struct ext4_super_block *es = sbi->s_es;
struct ext4_inode_info *ei = EXT4_I(inode);
struct ext4_extent *ex;
unsigned int i, len;
@@ -632,9 +637,13 @@ int ext4_ind_migrate(struct inode *inode
if (test_opt(inode->i_sb, DELALLOC))
ext4_alloc_da_blocks(inode);
+ percpu_down_write(&sbi->s_writepages_rwsem);
+
handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ goto out_unlock;
+ }
down_write(&EXT4_I(inode)->i_data_sem);
ret = ext4_ext_check_inode(inode);
@@ -669,5 +678,7 @@ int ext4_ind_migrate(struct inode *inode
errout:
ext4_journal_stop(handle);
up_write(&EXT4_I(inode)->i_data_sem);
+out_unlock:
+ percpu_up_write(&sbi->s_writepages_rwsem);
return ret;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 087/135] KVM: nVMX: Refactor IO bitmap checks into helper function
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (85 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 086/135] ext4: fix race between writepages and enabling EXT4_EXTENTS_FL Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 088/135] KVM: nVMX: Check IO instruction VM-exit conditions Greg Kroah-Hartman
` (51 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Oliver Upton, Vitaly Kuznetsov,
Paolo Bonzini
From: Oliver Upton <oupton@google.com>
commit e71237d3ff1abf9f3388337cfebf53b96df2020d upstream.
Checks against the IO bitmap are useful for both instruction emulation
and VM-exit reflection. Refactor the IO bitmap checks into a helper
function.
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/vmx/nested.c | 39 +++++++++++++++++++++++++--------------
arch/x86/kvm/vmx/nested.h | 2 ++
2 files changed, 27 insertions(+), 14 deletions(-)
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -5132,24 +5132,17 @@ fail:
return 1;
}
-
-static bool nested_vmx_exit_handled_io(struct kvm_vcpu *vcpu,
- struct vmcs12 *vmcs12)
+/*
+ * Return true if an IO instruction with the specified port and size should cause
+ * a VM-exit into L1.
+ */
+bool nested_vmx_check_io_bitmaps(struct kvm_vcpu *vcpu, unsigned int port,
+ int size)
{
- unsigned long exit_qualification;
+ struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
gpa_t bitmap, last_bitmap;
- unsigned int port;
- int size;
u8 b;
- if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
- return nested_cpu_has(vmcs12, CPU_BASED_UNCOND_IO_EXITING);
-
- exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-
- port = exit_qualification >> 16;
- size = (exit_qualification & 7) + 1;
-
last_bitmap = (gpa_t)-1;
b = -1;
@@ -5176,6 +5169,24 @@ static bool nested_vmx_exit_handled_io(s
return false;
}
+static bool nested_vmx_exit_handled_io(struct kvm_vcpu *vcpu,
+ struct vmcs12 *vmcs12)
+{
+ unsigned long exit_qualification;
+ unsigned int port;
+ int size;
+
+ if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
+ return nested_cpu_has(vmcs12, CPU_BASED_UNCOND_IO_EXITING);
+
+ exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+
+ port = exit_qualification >> 16;
+ size = (exit_qualification & 7) + 1;
+
+ return nested_vmx_check_io_bitmaps(vcpu, port, size);
+}
+
/*
* Return 1 if we should exit from L2 to L1 to handle an MSR access access,
* rather than handle it ourselves in L0. I.e., check whether L1 expressed
--- a/arch/x86/kvm/vmx/nested.h
+++ b/arch/x86/kvm/vmx/nested.h
@@ -33,6 +33,8 @@ int vmx_set_vmx_msr(struct kvm_vcpu *vcp
int vmx_get_vmx_msr(struct nested_vmx_msrs *msrs, u32 msr_index, u64 *pdata);
int get_vmx_mem_address(struct kvm_vcpu *vcpu, unsigned long exit_qualification,
u32 vmx_instruction_info, bool wr, int len, gva_t *ret);
+bool nested_vmx_check_io_bitmaps(struct kvm_vcpu *vcpu, unsigned int port,
+ int size);
static inline struct vmcs12 *get_vmcs12(struct kvm_vcpu *vcpu)
{
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 088/135] KVM: nVMX: Check IO instruction VM-exit conditions
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (86 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 087/135] KVM: nVMX: Refactor IO bitmap checks into helper function Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 089/135] KVM: nVMX: clear PIN_BASED_POSTED_INTR from nested pinbased_ctls only when apicv is globally disabled Greg Kroah-Hartman
` (50 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Oliver Upton, Paolo Bonzini
From: Oliver Upton <oupton@google.com>
commit 35a571346a94fb93b5b3b6a599675ef3384bc75c upstream.
Consult the 'unconditional IO exiting' and 'use IO bitmaps' VM-execution
controls when checking instruction interception. If the 'use IO bitmaps'
VM-execution control is 1, check the instruction access against the IO
bitmaps to determine if the instruction causes a VM-exit.
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/vmx/nested.c | 2 -
arch/x86/kvm/vmx/vmx.c | 57 +++++++++++++++++++++++++++++++++++++++++-----
2 files changed, 52 insertions(+), 7 deletions(-)
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -5173,7 +5173,7 @@ static bool nested_vmx_exit_handled_io(s
struct vmcs12 *vmcs12)
{
unsigned long exit_qualification;
- unsigned int port;
+ unsigned short port;
int size;
if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7132,6 +7132,39 @@ static void vmx_request_immediate_exit(s
to_vmx(vcpu)->req_immediate_exit = true;
}
+static int vmx_check_intercept_io(struct kvm_vcpu *vcpu,
+ struct x86_instruction_info *info)
+{
+ struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+ unsigned short port;
+ bool intercept;
+ int size;
+
+ if (info->intercept == x86_intercept_in ||
+ info->intercept == x86_intercept_ins) {
+ port = info->src_val;
+ size = info->dst_bytes;
+ } else {
+ port = info->dst_val;
+ size = info->src_bytes;
+ }
+
+ /*
+ * If the 'use IO bitmaps' VM-execution control is 0, IO instruction
+ * VM-exits depend on the 'unconditional IO exiting' VM-execution
+ * control.
+ *
+ * Otherwise, IO instruction VM-exits are controlled by the IO bitmaps.
+ */
+ if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
+ intercept = nested_cpu_has(vmcs12,
+ CPU_BASED_UNCOND_IO_EXITING);
+ else
+ intercept = nested_vmx_check_io_bitmaps(vcpu, port, size);
+
+ return intercept ? X86EMUL_UNHANDLEABLE : X86EMUL_CONTINUE;
+}
+
static int vmx_check_intercept(struct kvm_vcpu *vcpu,
struct x86_instruction_info *info,
enum x86_intercept_stage stage)
@@ -7139,18 +7172,30 @@ static int vmx_check_intercept(struct kv
struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
+ switch (info->intercept) {
/*
* RDPID causes #UD if disabled through secondary execution controls.
* Because it is marked as EmulateOnUD, we need to intercept it here.
*/
- if (info->intercept == x86_intercept_rdtscp &&
- !nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDTSCP)) {
- ctxt->exception.vector = UD_VECTOR;
- ctxt->exception.error_code_valid = false;
- return X86EMUL_PROPAGATE_FAULT;
- }
+ case x86_intercept_rdtscp:
+ if (!nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDTSCP)) {
+ ctxt->exception.vector = UD_VECTOR;
+ ctxt->exception.error_code_valid = false;
+ return X86EMUL_PROPAGATE_FAULT;
+ }
+ break;
+
+ case x86_intercept_in:
+ case x86_intercept_ins:
+ case x86_intercept_out:
+ case x86_intercept_outs:
+ return vmx_check_intercept_io(vcpu, info);
/* TODO: check more intercepts... */
+ default:
+ break;
+ }
+
return X86EMUL_UNHANDLEABLE;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 089/135] KVM: nVMX: clear PIN_BASED_POSTED_INTR from nested pinbased_ctls only when apicv is globally disabled
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (87 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 088/135] KVM: nVMX: Check IO instruction VM-exit conditions Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 090/135] KVM: nVMX: handle nested posted interrupts when apicv is disabled for L1 Greg Kroah-Hartman
` (49 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Vitaly Kuznetsov, Paolo Bonzini
From: Vitaly Kuznetsov <vkuznets@redhat.com>
commit a4443267800af240072280c44521caab61924e55 upstream.
When apicv is disabled on a vCPU (e.g. by enabling KVM_CAP_HYPERV_SYNIC*),
nothing happens to VMX MSRs on the already existing vCPUs, however, all new
ones are created with PIN_BASED_POSTED_INTR filtered out. This is very
confusing and results in the following picture inside the guest:
$ rdmsr -ax 0x48d
ff00000016
7f00000016
7f00000016
7f00000016
This is observed with QEMU and 4-vCPU guest: QEMU creates vCPU0, does
KVM_CAP_HYPERV_SYNIC2 and then creates the remaining three.
L1 hypervisor may only check CPU0's controls to find out what features
are available and it will be very confused later. Switch to setting
PIN_BASED_POSTED_INTR control based on global 'enable_apicv' setting.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/vmx/capabilities.h | 1 +
arch/x86/kvm/vmx/nested.c | 5 ++---
arch/x86/kvm/vmx/nested.h | 3 +--
arch/x86/kvm/vmx/vmx.c | 10 ++++------
4 files changed, 8 insertions(+), 11 deletions(-)
--- a/arch/x86/kvm/vmx/capabilities.h
+++ b/arch/x86/kvm/vmx/capabilities.h
@@ -12,6 +12,7 @@ extern bool __read_mostly enable_ept;
extern bool __read_mostly enable_unrestricted_guest;
extern bool __read_mostly enable_ept_ad_bits;
extern bool __read_mostly enable_pml;
+extern bool __read_mostly enable_apicv;
extern int __read_mostly pt_mode;
#define PT_MODE_SYSTEM 0
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -5807,8 +5807,7 @@ void nested_vmx_vcpu_setup(void)
* bit in the high half is on if the corresponding bit in the control field
* may be on. See also vmx_control_verify().
*/
-void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps,
- bool apicv)
+void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps)
{
/*
* Note that as a general rule, the high half of the MSRs (bits in
@@ -5835,7 +5834,7 @@ void nested_vmx_setup_ctls_msrs(struct n
PIN_BASED_EXT_INTR_MASK |
PIN_BASED_NMI_EXITING |
PIN_BASED_VIRTUAL_NMIS |
- (apicv ? PIN_BASED_POSTED_INTR : 0);
+ (enable_apicv ? PIN_BASED_POSTED_INTR : 0);
msrs->pinbased_ctls_high |=
PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR |
PIN_BASED_VMX_PREEMPTION_TIMER;
--- a/arch/x86/kvm/vmx/nested.h
+++ b/arch/x86/kvm/vmx/nested.h
@@ -17,8 +17,7 @@ enum nvmx_vmentry_status {
};
void vmx_leave_nested(struct kvm_vcpu *vcpu);
-void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps,
- bool apicv);
+void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps);
void nested_vmx_hardware_unsetup(void);
__init int nested_vmx_hardware_setup(int (*exit_handlers[])(struct kvm_vcpu *));
void nested_vmx_vcpu_setup(void);
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -95,7 +95,7 @@ module_param(emulate_invalid_guest_state
static bool __read_mostly fasteoi = 1;
module_param(fasteoi, bool, S_IRUGO);
-static bool __read_mostly enable_apicv = 1;
+bool __read_mostly enable_apicv = 1;
module_param(enable_apicv, bool, S_IRUGO);
/*
@@ -6802,8 +6802,7 @@ static struct kvm_vcpu *vmx_create_vcpu(
if (nested)
nested_vmx_setup_ctls_msrs(&vmx->nested.msrs,
- vmx_capability.ept,
- kvm_vcpu_apicv_active(&vmx->vcpu));
+ vmx_capability.ept);
else
memset(&vmx->nested.msrs, 0, sizeof(vmx->nested.msrs));
@@ -6885,8 +6884,7 @@ static int __init vmx_check_processor_co
if (setup_vmcs_config(&vmcs_conf, &vmx_cap) < 0)
return -EIO;
if (nested)
- nested_vmx_setup_ctls_msrs(&vmcs_conf.nested, vmx_cap.ept,
- enable_apicv);
+ nested_vmx_setup_ctls_msrs(&vmcs_conf.nested, vmx_cap.ept);
if (memcmp(&vmcs_config, &vmcs_conf, sizeof(struct vmcs_config)) != 0) {
printk(KERN_ERR "kvm: CPU %d feature inconsistency!\n",
smp_processor_id());
@@ -7781,7 +7779,7 @@ static __init int hardware_setup(void)
if (nested) {
nested_vmx_setup_ctls_msrs(&vmcs_config.nested,
- vmx_capability.ept, enable_apicv);
+ vmx_capability.ept);
r = nested_vmx_hardware_setup(kvm_vmx_exit_handlers);
if (r)
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 090/135] KVM: nVMX: handle nested posted interrupts when apicv is disabled for L1
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (88 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 089/135] KVM: nVMX: clear PIN_BASED_POSTED_INTR from nested pinbased_ctls only when apicv is globally disabled Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 091/135] KVM: apic: avoid calculating pending eoi from an uninitialized val Greg Kroah-Hartman
` (48 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Paolo Bonzini, Vitaly Kuznetsov
From: Vitaly Kuznetsov <vkuznets@redhat.com>
commit 91a5f413af596ad01097e59bf487eb07cb3f1331 upstream.
Even when APICv is disabled for L1 it can (and, actually, is) still
available for L2, this means we need to always call
vmx_deliver_nested_posted_interrupt() when attempting an interrupt
delivery.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/lapic.c | 5 +----
arch/x86/kvm/svm.c | 7 ++++++-
arch/x86/kvm/vmx/vmx.c | 13 +++++++++----
4 files changed, 17 insertions(+), 10 deletions(-)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1098,7 +1098,7 @@ struct kvm_x86_ops {
void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
void (*set_virtual_apic_mode)(struct kvm_vcpu *vcpu);
void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
- void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
+ int (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
int (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*set_identity_map_addr)(struct kvm *kvm, u64 ident_addr);
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1056,11 +1056,8 @@ static int __apic_accept_irq(struct kvm_
apic->regs + APIC_TMR);
}
- if (vcpu->arch.apicv_active)
- kvm_x86_ops->deliver_posted_interrupt(vcpu, vector);
- else {
+ if (kvm_x86_ops->deliver_posted_interrupt(vcpu, vector)) {
kvm_lapic_set_irr(vector, apic);
-
kvm_make_request(KVM_REQ_EVENT, vcpu);
kvm_vcpu_kick(vcpu);
}
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -5141,8 +5141,11 @@ static void svm_load_eoi_exitmap(struct
return;
}
-static void svm_deliver_avic_intr(struct kvm_vcpu *vcpu, int vec)
+static int svm_deliver_avic_intr(struct kvm_vcpu *vcpu, int vec)
{
+ if (!vcpu->arch.apicv_active)
+ return -1;
+
kvm_lapic_set_irr(vec, vcpu->arch.apic);
smp_mb__after_atomic();
@@ -5154,6 +5157,8 @@ static void svm_deliver_avic_intr(struct
put_cpu();
} else
kvm_vcpu_wake_up(vcpu);
+
+ return 0;
}
static bool svm_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -3853,24 +3853,29 @@ static int vmx_deliver_nested_posted_int
* 2. If target vcpu isn't running(root mode), kick it to pick up the
* interrupt from PIR in next vmentry.
*/
-static void vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
+static int vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
int r;
r = vmx_deliver_nested_posted_interrupt(vcpu, vector);
if (!r)
- return;
+ return 0;
+
+ if (!vcpu->arch.apicv_active)
+ return -1;
if (pi_test_and_set_pir(vector, &vmx->pi_desc))
- return;
+ return 0;
/* If a previous notification has sent the IPI, nothing to do. */
if (pi_test_and_set_on(&vmx->pi_desc))
- return;
+ return 0;
if (!kvm_vcpu_trigger_posted_interrupt(vcpu, false))
kvm_vcpu_kick(vcpu);
+
+ return 0;
}
/*
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 091/135] KVM: apic: avoid calculating pending eoi from an uninitialized val
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (89 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 090/135] KVM: nVMX: handle nested posted interrupts when apicv is disabled for L1 Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 092/135] btrfs: destroy qgroup extent records on transaction abort Greg Kroah-Hartman
` (47 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Vitaly Kuznetsov, Miaohe Lin, Paolo Bonzini
From: Miaohe Lin <linmiaohe@huawei.com>
commit 23520b2def95205f132e167cf5b25c609975e959 upstream.
When pv_eoi_get_user() fails, 'val' may remain uninitialized and the return
value of pv_eoi_get_pending() becomes random. Fix the issue by initializing
the variable.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/lapic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -637,9 +637,11 @@ static inline bool pv_eoi_enabled(struct
static bool pv_eoi_get_pending(struct kvm_vcpu *vcpu)
{
u8 val;
- if (pv_eoi_get_user(vcpu, &val) < 0)
+ if (pv_eoi_get_user(vcpu, &val) < 0) {
printk(KERN_WARNING "Can't read EOI MSR value: 0x%llx\n",
(unsigned long long)vcpu->arch.pv_eoi.msr_val);
+ return false;
+ }
return val & 0x1;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 092/135] btrfs: destroy qgroup extent records on transaction abort
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (90 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 091/135] KVM: apic: avoid calculating pending eoi from an uninitialized val Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 093/135] btrfs: fix bytes_may_use underflow in prealloc error condtition Greg Kroah-Hartman
` (46 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Josef Bacik, Jeff Mahoney, Qu Wenruo,
David Sterba
From: Jeff Mahoney <jeffm@suse.com>
commit 81f7eb00ff5bb8326e82503a32809421d14abb8a upstream.
We clean up the delayed references when we abort a transaction but we
leave the pending qgroup extent records behind, leaking memory.
This patch destroys the extent records when we destroy the delayed refs
and makes sure ensure they're gone before releasing the transaction.
Fixes: 3368d001ba5d ("btrfs: qgroup: Record possible quota-related extent for qgroup.")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
[ Rebased to latest upstream, remove to_qgroup() helper, use
rbtree_postorder_for_each_entry_safe() wrapper ]
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/disk-io.c | 1 +
fs/btrfs/qgroup.c | 13 +++++++++++++
fs/btrfs/qgroup.h | 1 +
fs/btrfs/transaction.c | 2 ++
4 files changed, 17 insertions(+)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -4293,6 +4293,7 @@ static int btrfs_destroy_delayed_refs(st
cond_resched();
spin_lock(&delayed_refs->lock);
}
+ btrfs_qgroup_destroy_extent_records(trans);
spin_unlock(&delayed_refs->lock);
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -4018,3 +4018,16 @@ out:
}
return ret;
}
+
+void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans)
+{
+ struct btrfs_qgroup_extent_record *entry;
+ struct btrfs_qgroup_extent_record *next;
+ struct rb_root *root;
+
+ root = &trans->delayed_refs.dirty_extent_root;
+ rbtree_postorder_for_each_entry_safe(entry, next, root, node) {
+ ulist_free(entry->old_roots);
+ kfree(entry);
+ }
+}
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -414,5 +414,6 @@ int btrfs_qgroup_add_swapped_blocks(stru
u64 last_snapshot);
int btrfs_qgroup_trace_subtree_after_cow(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *eb);
+void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans);
#endif
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -51,6 +51,8 @@ void btrfs_put_transaction(struct btrfs_
BUG_ON(!list_empty(&transaction->list));
WARN_ON(!RB_EMPTY_ROOT(
&transaction->delayed_refs.href_root.rb_root));
+ WARN_ON(!RB_EMPTY_ROOT(
+ &transaction->delayed_refs.dirty_extent_root));
if (transaction->delayed_refs.pending_csums)
btrfs_err(transaction->fs_info,
"pending csums is %llu",
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 093/135] btrfs: fix bytes_may_use underflow in prealloc error condtition
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (91 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 092/135] btrfs: destroy qgroup extent records on transaction abort Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 094/135] btrfs: reset fs_root to NULL on error in open_ctree Greg Kroah-Hartman
` (45 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Qu Wenruo, Josef Bacik, David Sterba
From: Josef Bacik <josef@toxicpanda.com>
commit b778cf962d71a0e737923d55d0432f3bd287258e upstream.
I hit the following warning while running my error injection stress
testing:
WARNING: CPU: 3 PID: 1453 at fs/btrfs/space-info.h:108 btrfs_free_reserved_data_space_noquota+0xfd/0x160 [btrfs]
RIP: 0010:btrfs_free_reserved_data_space_noquota+0xfd/0x160 [btrfs]
Call Trace:
btrfs_free_reserved_data_space+0x4f/0x70 [btrfs]
__btrfs_prealloc_file_range+0x378/0x470 [btrfs]
elfcorehdr_read+0x40/0x40
? elfcorehdr_read+0x40/0x40
? btrfs_commit_transaction+0xca/0xa50 [btrfs]
? dput+0xb4/0x2a0
? btrfs_log_dentry_safe+0x55/0x70 [btrfs]
? btrfs_sync_file+0x30e/0x420 [btrfs]
? do_fsync+0x38/0x70
? __x64_sys_fdatasync+0x13/0x20
? do_syscall_64+0x5b/0x1b0
? entry_SYSCALL_64_after_hwframe+0x44/0xa9
This happens if we fail to insert our reserved file extent. At this
point we've already converted our reservation from ->bytes_may_use to
->bytes_reserved. However once we break we will attempt to free
everything from [cur_offset, end] from ->bytes_may_use, but our extent
reservation will overlap part of this.
Fix this problem by adding ins.offset (our extent allocation size) to
cur_offset so we remove the actual remaining part from ->bytes_may_use.
I validated this fix using my inject-error.py script
python inject-error.py -o should_fail_bio -t cache_save_setup -t \
__btrfs_prealloc_file_range \
-t insert_reserved_file_extent.constprop.0 \
-r "-5" ./run-fsstress.sh
where run-fsstress.sh simply mounts and runs fsstress on a disk.
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/inode.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -10464,6 +10464,7 @@ static int __btrfs_prealloc_file_range(s
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_key ins;
u64 cur_offset = start;
+ u64 clear_offset = start;
u64 i_size;
u64 cur_bytes;
u64 last_alloc = (u64)-1;
@@ -10498,6 +10499,15 @@ static int __btrfs_prealloc_file_range(s
btrfs_end_transaction(trans);
break;
}
+
+ /*
+ * We've reserved this space, and thus converted it from
+ * ->bytes_may_use to ->bytes_reserved. Any error that happens
+ * from here on out we will only need to clear our reservation
+ * for the remaining unreserved area, so advance our
+ * clear_offset by our extent size.
+ */
+ clear_offset += ins.offset;
btrfs_dec_block_group_reservations(fs_info, ins.objectid);
last_alloc = ins.offset;
@@ -10578,9 +10588,9 @@ next:
if (own_trans)
btrfs_end_transaction(trans);
}
- if (cur_offset < end)
- btrfs_free_reserved_data_space(inode, NULL, cur_offset,
- end - cur_offset + 1);
+ if (clear_offset < end)
+ btrfs_free_reserved_data_space(inode, NULL, clear_offset,
+ end - clear_offset + 1);
return ret;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 094/135] btrfs: reset fs_root to NULL on error in open_ctree
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (92 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 093/135] btrfs: fix bytes_may_use underflow in prealloc error condtition Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 095/135] btrfs: do not check delayed items are empty for single transaction cleanup Greg Kroah-Hartman
` (44 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Nikolay Borisov, Johannes Thumshirn,
Qu Wenruo, Josef Bacik, David Sterba
From: Josef Bacik <josef@toxicpanda.com>
commit 315bf8ef914f31d51d084af950703aa1e09a728c upstream.
While running my error injection script I hit a panic when we tried to
clean up the fs_root when freeing the fs_root. This is because
fs_info->fs_root == PTR_ERR(-EIO), which isn't great. Fix this by
setting fs_info->fs_root = NULL; if we fail to read the root.
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/disk-io.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3203,6 +3203,7 @@ retry_root_backup:
if (IS_ERR(fs_info->fs_root)) {
err = PTR_ERR(fs_info->fs_root);
btrfs_warn(fs_info, "failed to read fs tree: %d", err);
+ fs_info->fs_root = NULL;
goto fail_qgroup;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 095/135] btrfs: do not check delayed items are empty for single transaction cleanup
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (93 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 094/135] btrfs: reset fs_root to NULL on error in open_ctree Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 096/135] Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents Greg Kroah-Hartman
` (43 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Johannes Thumshirn, Nikolay Borisov,
Qu Wenruo, Josef Bacik, David Sterba
From: Josef Bacik <josef@toxicpanda.com>
commit 1e90315149f3fe148e114a5de86f0196d1c21fa5 upstream.
btrfs_assert_delayed_root_empty() will check if the delayed root is
completely empty, but this is a filesystem-wide check. On cleanup we
may have allowed other transactions to begin, for whatever reason, and
thus the delayed root is not empty.
So remove this check from cleanup_one_transation(). This however can
stay in btrfs_cleanup_transaction(), because it checks only after all of
the transactions have been properly cleaned up, and thus is valid.
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/disk-io.c | 1 -
1 file changed, 1 deletion(-)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -4520,7 +4520,6 @@ void btrfs_cleanup_one_transaction(struc
wake_up(&fs_info->transaction_wait);
btrfs_destroy_delayed_inodes(fs_info);
- btrfs_assert_delayed_root_empty(fs_info);
btrfs_destroy_marked_extents(fs_info, &cur_trans->dirty_pages,
EXTENT_DIRTY);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 096/135] Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (94 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 095/135] btrfs: do not check delayed items are empty for single transaction cleanup Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 097/135] Btrfs: fix race between shrinking truncate and fiemap Greg Kroah-Hartman
` (42 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Qu Wenruo, Josef Bacik,
Filipe Manana, David Sterba
From: Filipe Manana <fdmanana@suse.com>
commit e75fd33b3f744f644061a4f9662bd63f5434f806 upstream.
In btrfs_wait_ordered_range() once we find an ordered extent that has
finished with an error we exit the loop and don't wait for any other
ordered extents that might be still in progress.
All the users of btrfs_wait_ordered_range() expect that there are no more
ordered extents in progress after that function returns. So past fixes
such like the ones from the two following commits:
ff612ba7849964 ("btrfs: fix panic during relocation after ENOSPC before
writeback happens")
28aeeac1dd3080 ("Btrfs: fix panic when starting bg cache writeout after
IO error")
don't work when there are multiple ordered extents in the range.
Fix that by making btrfs_wait_ordered_range() wait for all ordered extents
even after it finds one that had an error.
Link: https://github.com/kdave/btrfs-progs/issues/228#issuecomment-569777554
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/ordered-data.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -690,10 +690,15 @@ int btrfs_wait_ordered_range(struct inod
}
btrfs_start_ordered_extent(inode, ordered, 1);
end = ordered->file_offset;
+ /*
+ * If the ordered extent had an error save the error but don't
+ * exit without waiting first for all other ordered extents in
+ * the range to complete.
+ */
if (test_bit(BTRFS_ORDERED_IOERR, &ordered->flags))
ret = -EIO;
btrfs_put_ordered_extent(ordered);
- if (ret || end == 0 || end == start)
+ if (end == 0 || end == start)
break;
end--;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 097/135] Btrfs: fix race between shrinking truncate and fiemap
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (95 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 096/135] Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 098/135] btrfs: dont set path->leave_spinning for truncate Greg Kroah-Hartman
` (41 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Josef Bacik, Filipe Manana, David Sterba
From: Filipe Manana <fdmanana@suse.com>
commit 28553fa992cb28be6a65566681aac6cafabb4f2d upstream.
When there is a fiemap executing in parallel with a shrinking truncate
we can end up in a situation where we have extent maps for which we no
longer have corresponding file extent items. This is generally harmless
and at the moment the only consequences are missing file extent items
representing holes after we expand the file size again after the
truncate operation removed the prealloc extent items, and stale
information for future fiemap calls (reporting extents that no longer
exist or may have been reallocated to other files for example).
Consider the following example:
1) Our inode has a size of 128KiB, one 128KiB extent at file offset 0
and a 1MiB prealloc extent at file offset 128KiB;
2) Task A starts doing a shrinking truncate of our inode to reduce it to
a size of 64KiB. Before it searches the subvolume tree for file
extent items to delete, it drops all the extent maps in the range
from 64KiB to (u64)-1 by calling btrfs_drop_extent_cache();
3) Task B starts doing a fiemap against our inode. When looking up for
the inode's extent maps in the range from 128KiB to (u64)-1, it
doesn't find any in the inode's extent map tree, since they were
removed by task A. Because it didn't find any in the extent map
tree, it scans the inode's subvolume tree for file extent items, and
it finds the 1MiB prealloc extent at file offset 128KiB, then it
creates an extent map based on that file extent item and adds it to
inode's extent map tree (this ends up being done by
btrfs_get_extent() <- btrfs_get_extent_fiemap() <-
get_extent_skip_holes());
4) Task A then drops the prealloc extent at file offset 128KiB and
shrinks the 128KiB extent file offset 0 to a length of 64KiB. The
truncation operation finishes and we end up with an extent map
representing a 1MiB prealloc extent at file offset 128KiB, despite we
don't have any more that extent;
After this the two types of problems we have are:
1) Future calls to fiemap always report that a 1MiB prealloc extent
exists at file offset 128KiB. This is stale information, no longer
correct;
2) If the size of the file is increased, by a truncate operation that
increases the file size or by a write into a file offset > 64KiB for
example, we end up not inserting file extent items to represent holes
for any range between 128KiB and 128KiB + 1MiB, since the hole
expansion function, btrfs_cont_expand() will skip hole insertion for
any range for which an extent map exists that represents a prealloc
extent. This causes fsck to complain about missing file extent items
when not using the NO_HOLES feature.
The second issue could be often triggered by test case generic/561 from
fstests, which runs fsstress and duperemove in parallel, and duperemove
does frequent fiemap calls.
Essentially the problems happens because fiemap does not acquire the
inode's lock while truncate does, and fiemap locks the file range in the
inode's iotree while truncate does not. So fix the issue by making
btrfs_truncate_inode_items() lock the file range from the new file size
to (u64)-1, so that it serializes with fiemap.
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/inode.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4734,6 +4734,8 @@ int btrfs_truncate_inode_items(struct bt
u64 bytes_deleted = 0;
bool be_nice = false;
bool should_throttle = false;
+ const u64 lock_start = ALIGN_DOWN(new_size, fs_info->sectorsize);
+ struct extent_state *cached_state = NULL;
BUG_ON(new_size > 0 && min_type != BTRFS_EXTENT_DATA_KEY);
@@ -4750,6 +4752,9 @@ int btrfs_truncate_inode_items(struct bt
return -ENOMEM;
path->reada = READA_BACK;
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
+ &cached_state);
+
/*
* We want to drop from the next block forward in case this new size is
* not block aligned since we will be keeping the last block of the
@@ -5016,6 +5021,9 @@ out:
btrfs_ordered_update_i_size(inode, last_size, NULL);
}
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
+ &cached_state);
+
btrfs_free_path(path);
return ret;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 098/135] btrfs: dont set path->leave_spinning for truncate
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (96 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 097/135] Btrfs: fix race between shrinking truncate and fiemap Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 099/135] Btrfs: fix deadlock during fast fsync when logging prealloc extents beyond eof Greg Kroah-Hartman
` (40 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Dave Jones, Filipe Manana,
Josef Bacik, David Sterba
From: Josef Bacik <josef@toxicpanda.com>
commit 52e29e331070cd7d52a64cbf1b0958212a340e28 upstream.
The only time we actually leave the path spinning is if we're truncating
a small amount and don't actually free an extent, which is not a common
occurrence. We have to set the path blocking in order to add the
delayed ref anyway, so the first extent we find we set the path to
blocking and stay blocking for the duration of the operation. With the
upcoming file extent map stuff there will be another case that we have
to have the path blocking, so just swap to blocking always.
Note: this patch also fixes a warning after 28553fa992cb ("Btrfs: fix
race between shrinking truncate and fiemap") got merged that inserts
extent locks around truncation so the path must not leave spinning locks
after btrfs_search_slot.
[70.794783] BUG: sleeping function called from invalid context at mm/slab.h:565
[70.794834] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1141, name: rsync
[70.794863] 5 locks held by rsync/1141:
[70.794876] #0: ffff888417b9c408 (sb_writers#17){.+.+}, at: mnt_want_write+0x20/0x50
[70.795030] #1: ffff888428de28e8 (&type->i_mutex_dir_key#13/1){+.+.}, at: lock_rename+0xf1/0x100
[70.795051] #2: ffff888417b9c608 (sb_internal#2){.+.+}, at: start_transaction+0x394/0x560
[70.795124] #3: ffff888403081768 (btrfs-fs-01){++++}, at: btrfs_try_tree_write_lock+0x2f/0x160
[70.795203] #4: ffff888403086568 (btrfs-fs-00){++++}, at: btrfs_try_tree_write_lock+0x2f/0x160
[70.795222] CPU: 5 PID: 1141 Comm: rsync Not tainted 5.6.0-rc2-backup+ #2
[70.795362] Call Trace:
[70.795374] dump_stack+0x71/0xa0
[70.795445] ___might_sleep.part.96.cold.106+0xa6/0xb6
[70.795459] kmem_cache_alloc+0x1d3/0x290
[70.795471] alloc_extent_state+0x22/0x1c0
[70.795544] __clear_extent_bit+0x3ba/0x580
[70.795557] ? _raw_spin_unlock_irq+0x24/0x30
[70.795569] btrfs_truncate_inode_items+0x339/0xe50
[70.795647] btrfs_evict_inode+0x269/0x540
[70.795659] ? dput.part.38+0x29/0x460
[70.795671] evict+0xcd/0x190
[70.795682] __dentry_kill+0xd6/0x180
[70.795754] dput.part.38+0x2ad/0x460
[70.795765] do_renameat2+0x3cb/0x540
[70.795777] __x64_sys_rename+0x1c/0x20
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Fixes: 28553fa992cb ("Btrfs: fix race between shrinking truncate and fiemap")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add note ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/inode.c | 2 --
1 file changed, 2 deletions(-)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4791,7 +4791,6 @@ search_again:
goto out;
}
- path->leave_spinning = 1;
ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
if (ret < 0)
goto out;
@@ -4943,7 +4942,6 @@ delete:
root == fs_info->tree_root)) {
struct btrfs_ref ref = { 0 };
- btrfs_set_path_blocking(path);
bytes_deleted += extent_num_bytes;
btrfs_init_generic_ref(&ref, BTRFS_DROP_DELAYED_REF,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 099/135] Btrfs: fix deadlock during fast fsync when logging prealloc extents beyond eof
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (97 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 098/135] btrfs: dont set path->leave_spinning for truncate Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 100/135] Revert "dmaengine: imx-sdma: Fix memory leak" Greg Kroah-Hartman
` (39 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Josef Bacik, Filipe Manana, David Sterba
From: Filipe Manana <fdmanana@suse.com>
commit a5ae50dea9111db63d30d700766dd5509602f7ad upstream.
While logging the prealloc extents of an inode during a fast fsync we call
btrfs_truncate_inode_items(), through btrfs_log_prealloc_extents(), while
holding a read lock on a leaf of the inode's root (not the log root, the
fs/subvol root), and then that function locks the file range in the inode's
iotree. This can lead to a deadlock when:
* the fsync is ranged
* the file has prealloc extents beyond eof
* writeback for a range different from the fsync range starts
during the fsync
* the size of the file is not sector size aligned
Because when finishing an ordered extent we lock first a file range and
then try to COW the fs/subvol tree to insert an extent item.
The following diagram shows how the deadlock can happen.
CPU 1 CPU 2
btrfs_sync_file()
--> for range [0, 1MiB)
--> inode has a size of
1MiB and has 1 prealloc
extent beyond the
i_size, starting at offset
4MiB
flushes all delalloc for the
range [0MiB, 1MiB) and waits
for the respective ordered
extents to complete
--> before task at CPU 1 locks the
inode, a write into file range
[1MiB, 2MiB + 1KiB) is made
--> i_size is updated to 2MiB + 1KiB
--> writeback is started for that
range, [1MiB, 2MiB + 4KiB)
--> end offset rounded up to
be sector size aligned
btrfs_log_dentry_safe()
btrfs_log_inode_parent()
btrfs_log_inode()
btrfs_log_changed_extents()
btrfs_log_prealloc_extents()
--> does a search on the
inode's root
--> holds a read lock on
leaf X
btrfs_finish_ordered_io()
--> locks range [1MiB, 2MiB + 4KiB)
--> end offset rounded up
to be sector size aligned
--> tries to cow leaf X, through
insert_reserved_file_extent()
--> already locked by the
task at CPU 1
btrfs_truncate_inode_items()
--> gets an i_size of
2MiB + 1KiB, which is
not sector size
aligned
--> tries to lock file
range [2MiB, (u64)-1)
--> the start range
is rounded down
from 2MiB + 1K
to 2MiB to be sector
size aligned
--> but the subrange
[2MiB, 2MiB + 4KiB) is
already locked by
task at CPU 2 which
is waiting to get a
write lock on leaf X
for which we are
holding a read lock
*** deadlock ***
This results in a stack trace like the following, triggered by test case
generic/561 from fstests:
[ 2779.973608] INFO: task kworker/u8:6:247 blocked for more than 120 seconds.
[ 2779.979536] Not tainted 5.6.0-rc2-btrfs-next-53 #1
[ 2779.984503] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2779.990136] kworker/u8:6 D 0 247 2 0x80004000
[ 2779.990457] Workqueue: btrfs-endio-write btrfs_work_helper [btrfs]
[ 2779.990466] Call Trace:
[ 2779.990491] ? __schedule+0x384/0xa30
[ 2779.990521] schedule+0x33/0xe0
[ 2779.990616] btrfs_tree_read_lock+0x19e/0x2e0 [btrfs]
[ 2779.990632] ? remove_wait_queue+0x60/0x60
[ 2779.990730] btrfs_read_lock_root_node+0x2f/0x40 [btrfs]
[ 2779.990782] btrfs_search_slot+0x510/0x1000 [btrfs]
[ 2779.990869] btrfs_lookup_file_extent+0x4a/0x70 [btrfs]
[ 2779.990944] __btrfs_drop_extents+0x161/0x1060 [btrfs]
[ 2779.990987] ? mark_held_locks+0x6d/0xc0
[ 2779.990994] ? __slab_alloc.isra.49+0x99/0x100
[ 2779.991060] ? insert_reserved_file_extent.constprop.19+0x64/0x300 [btrfs]
[ 2779.991145] insert_reserved_file_extent.constprop.19+0x97/0x300 [btrfs]
[ 2779.991222] ? start_transaction+0xdd/0x5c0 [btrfs]
[ 2779.991291] btrfs_finish_ordered_io+0x4f4/0x840 [btrfs]
[ 2779.991405] btrfs_work_helper+0xaa/0x720 [btrfs]
[ 2779.991432] process_one_work+0x26d/0x6a0
[ 2779.991460] worker_thread+0x4f/0x3e0
[ 2779.991481] ? process_one_work+0x6a0/0x6a0
[ 2779.991489] kthread+0x103/0x140
[ 2779.991499] ? kthread_create_worker_on_cpu+0x70/0x70
[ 2779.991515] ret_from_fork+0x3a/0x50
(...)
[ 2780.026211] INFO: task fsstress:17375 blocked for more than 120 seconds.
[ 2780.027480] Not tainted 5.6.0-rc2-btrfs-next-53 #1
[ 2780.028482] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2780.030035] fsstress D 0 17375 17373 0x00004000
[ 2780.030038] Call Trace:
[ 2780.030044] ? __schedule+0x384/0xa30
[ 2780.030052] schedule+0x33/0xe0
[ 2780.030075] lock_extent_bits+0x20c/0x320 [btrfs]
[ 2780.030094] ? btrfs_truncate_inode_items+0xf4/0x1150 [btrfs]
[ 2780.030098] ? rcu_read_lock_sched_held+0x59/0xa0
[ 2780.030102] ? remove_wait_queue+0x60/0x60
[ 2780.030122] btrfs_truncate_inode_items+0x133/0x1150 [btrfs]
[ 2780.030151] ? btrfs_set_path_blocking+0xb2/0x160 [btrfs]
[ 2780.030165] ? btrfs_search_slot+0x379/0x1000 [btrfs]
[ 2780.030195] btrfs_log_changed_extents.isra.8+0x841/0x93e [btrfs]
[ 2780.030202] ? do_raw_spin_unlock+0x49/0xc0
[ 2780.030215] ? btrfs_get_num_csums+0x10/0x10 [btrfs]
[ 2780.030239] btrfs_log_inode+0xf83/0x1124 [btrfs]
[ 2780.030251] ? __mutex_unlock_slowpath+0x45/0x2a0
[ 2780.030275] btrfs_log_inode_parent+0x2a0/0xe40 [btrfs]
[ 2780.030282] ? dget_parent+0xa1/0x370
[ 2780.030309] btrfs_log_dentry_safe+0x4a/0x70 [btrfs]
[ 2780.030329] btrfs_sync_file+0x3f3/0x490 [btrfs]
[ 2780.030339] do_fsync+0x38/0x60
[ 2780.030343] __x64_sys_fdatasync+0x13/0x20
[ 2780.030345] do_syscall_64+0x5c/0x280
[ 2780.030348] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 2780.030356] RIP: 0033:0x7f2d80f6d5f0
[ 2780.030361] Code: Bad RIP value.
[ 2780.030362] RSP: 002b:00007ffdba3c8548 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
[ 2780.030364] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2d80f6d5f0
[ 2780.030365] RDX: 00007ffdba3c84b0 RSI: 00007ffdba3c84b0 RDI: 0000000000000003
[ 2780.030367] RBP: 000000000000004a R08: 0000000000000001 R09: 00007ffdba3c855c
[ 2780.030368] R10: 0000000000000078 R11: 0000000000000246 R12: 00000000000001f4
[ 2780.030369] R13: 0000000051eb851f R14: 00007ffdba3c85f0 R15: 0000557a49220d90
So fix this by making btrfs_truncate_inode_items() not lock the range in
the inode's iotree when the target root is a log root, since it's not
needed to lock the range for log roots as the protection from the inode's
lock and log_mutex are all that's needed.
Fixes: 28553fa992cb28 ("Btrfs: fix race between shrinking truncate and fiemap")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/inode.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4752,8 +4752,9 @@ int btrfs_truncate_inode_items(struct bt
return -ENOMEM;
path->reada = READA_BACK;
- lock_extent_bits(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
- &cached_state);
+ if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID)
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
+ &cached_state);
/*
* We want to drop from the next block forward in case this new size is
@@ -5017,11 +5018,10 @@ out:
if (!ret && last_size > new_size)
last_size = new_size;
btrfs_ordered_update_i_size(inode, last_size, NULL);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start,
+ (u64)-1, &cached_state);
}
- unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
- &cached_state);
-
btrfs_free_path(path);
return ret;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 100/135] Revert "dmaengine: imx-sdma: Fix memory leak"
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (98 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 099/135] Btrfs: fix deadlock during fast fsync when logging prealloc extents beyond eof Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 101/135] drm/i915/gt: Detect if we miss WaIdleLiteRestore Greg Kroah-Hartman
` (38 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Andreas Tobler, Sascha Hauer,
Robin Gong, Vinod Koul, Sasha Levin
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 8a7aa4feeaeabc12181e1997a298eb73d2ed2d65 which is
commit 02939cd167095f16328a1bd5cab5a90b550606df upstream.
Andreas writes:
This patch breaks our imx6 board with the attached trace.
Reverting the patch makes it boot again.
Reported-by: Andreas Tobler <andreas.tobler@onway.ch>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Robin Gong <yibin.gong@nxp.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/dma/imx-sdma.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -760,8 +760,12 @@ static void sdma_start_desc(struct sdma_
return;
}
sdmac->desc = desc = to_sdma_desc(&vd->tx);
-
- list_del(&vd->node);
+ /*
+ * Do not delete the node in desc_issued list in cyclic mode, otherwise
+ * the desc allocated will never be freed in vchan_dma_desc_free_list
+ */
+ if (!(sdmac->flags & IMX_DMA_SG_LOOP))
+ list_del(&vd->node);
sdma->channel_control[channel].base_bd_ptr = desc->bd_phys;
sdma->channel_control[channel].current_bd_ptr = desc->bd_phys;
@@ -1067,6 +1071,7 @@ static void sdma_channel_terminate_work(
spin_lock_irqsave(&sdmac->vc.lock, flags);
vchan_get_all_descriptors(&sdmac->vc, &head);
+ sdmac->desc = NULL;
spin_unlock_irqrestore(&sdmac->vc.lock, flags);
vchan_dma_desc_free_list(&sdmac->vc, &head);
sdmac->context_loaded = false;
@@ -1075,19 +1080,11 @@ static void sdma_channel_terminate_work(
static int sdma_disable_channel_async(struct dma_chan *chan)
{
struct sdma_channel *sdmac = to_sdma_chan(chan);
- unsigned long flags;
-
- spin_lock_irqsave(&sdmac->vc.lock, flags);
sdma_disable_channel(chan);
- if (sdmac->desc) {
- vchan_terminate_vdesc(&sdmac->desc->vd);
- sdmac->desc = NULL;
+ if (sdmac->desc)
schedule_work(&sdmac->terminate_worker);
- }
-
- spin_unlock_irqrestore(&sdmac->vc.lock, flags);
return 0;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 101/135] drm/i915/gt: Detect if we miss WaIdleLiteRestore
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (99 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 100/135] Revert "dmaengine: imx-sdma: Fix memory leak" Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 102/135] drm/i915/execlists: Always force a context reload when rewinding RING_TAIL Greg Kroah-Hartman
` (37 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Chris Wilson, Mika Kuoppala,
Tvrtko Ursulin, stable
From: Chris Wilson <chris@chris-wilson.co.uk>
commit 82c69bf58650e644c61aa2bf5100b63a1070fd2f upstream.
In order to avoid confusing the HW, we must never submit an empty ring
during lite-restore, that is we should always advance the RING_TAIL
before submitting to stay ahead of the RING_HEAD.
Normally this is prevented by keeping a couple of spare NOPs in the
request->wa_tail so that on resubmission we can advance the tail. This
relies on the request only being resubmitted once, which is the normal
condition as it is seen once for ELSP[1] and then later in ELSP[0]. On
preemption, the requests are unwound and the tail reset back to the
normal end point (as we know the request is incomplete and therefore its
RING_HEAD is even earlier).
However, if this w/a should fail we would try and resubmit the request
with the RING_TAIL already set to the location of this request's wa_tail
potentially causing a GPU hang. We can spot when we do try and
incorrectly resubmit without advancing the RING_TAIL and spare any
embarrassment by forcing the context restore.
In the case of preempt-to-busy, we leave the requests running on the HW
while we unwind. As the ring is still live, we cannot rewind our
rq->tail without forcing a reload so leave it set to rq->wa_tail and
only force a reload if we resubmit after a lite-restore. (Normally, the
forced reload will be a part of the preemption event.)
Fixes: 22b7a426bbe1 ("drm/i915/execlists: Preempt-to-busy")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/673
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: stable@kernel.vger.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191209023215.3519970-1-chris@chris-wilson.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 42 +++++++++++++++++-------------------
1 file changed, 20 insertions(+), 22 deletions(-)
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -471,12 +471,6 @@ lrc_descriptor(struct intel_context *ce,
return desc;
}
-static void unwind_wa_tail(struct i915_request *rq)
-{
- rq->tail = intel_ring_wrap(rq->ring, rq->wa_tail - WA_TAIL_BYTES);
- assert_ring_tail_valid(rq->ring, rq->tail);
-}
-
static struct i915_request *
__unwind_incomplete_requests(struct intel_engine_cs *engine)
{
@@ -495,7 +489,6 @@ __unwind_incomplete_requests(struct inte
continue; /* XXX */
__i915_request_unsubmit(rq);
- unwind_wa_tail(rq);
/*
* Push the request back into the queue for later resubmission.
@@ -650,13 +643,29 @@ execlists_schedule_out(struct i915_reque
i915_request_put(rq);
}
-static u64 execlists_update_context(const struct i915_request *rq)
+static u64 execlists_update_context(struct i915_request *rq)
{
struct intel_context *ce = rq->hw_context;
- u64 desc;
+ u64 desc = ce->lrc_desc;
+ u32 tail;
- ce->lrc_reg_state[CTX_RING_TAIL + 1] =
- intel_ring_set_tail(rq->ring, rq->tail);
+ /*
+ * WaIdleLiteRestore:bdw,skl
+ *
+ * We should never submit the context with the same RING_TAIL twice
+ * just in case we submit an empty ring, which confuses the HW.
+ *
+ * We append a couple of NOOPs (gen8_emit_wa_tail) after the end of
+ * the normal request to be able to always advance the RING_TAIL on
+ * subsequent resubmissions (for lite restore). Should that fail us,
+ * and we try and submit the same tail again, force the context
+ * reload.
+ */
+ tail = intel_ring_set_tail(rq->ring, rq->tail);
+ if (unlikely(ce->lrc_reg_state[CTX_RING_TAIL + 1] == tail))
+ desc |= CTX_DESC_FORCE_RESTORE;
+ ce->lrc_reg_state[CTX_RING_TAIL + 1] = tail;
+ rq->tail = rq->wa_tail;
/*
* Make sure the context image is complete before we submit it to HW.
@@ -675,7 +684,6 @@ static u64 execlists_update_context(cons
*/
mb();
- desc = ce->lrc_desc;
ce->lrc_desc &= ~CTX_DESC_FORCE_RESTORE;
return desc;
@@ -1150,16 +1158,6 @@ static void execlists_dequeue(struct int
if (!list_is_last(&last->sched.link,
&engine->active.requests))
return;
-
- /*
- * WaIdleLiteRestore:bdw,skl
- * Apply the wa NOOPs to prevent
- * ring:HEAD == rq:TAIL as we resubmit the
- * request. See gen8_emit_fini_breadcrumb() for
- * where we prepare the padding after the
- * end of the request.
- */
- last->tail = last->wa_tail;
}
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 102/135] drm/i915/execlists: Always force a context reload when rewinding RING_TAIL
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (100 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 101/135] drm/i915/gt: Detect if we miss WaIdleLiteRestore Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 103/135] drm/i915/gvt: more locking for ppgtt mm LRU list Greg Kroah-Hartman
` (36 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Chris Wilson, Mika Kuoppala, Jani Nikula
From: Chris Wilson <chris@chris-wilson.co.uk>
commit b1339ecac661e1cf3e1dc78ac56bff3aeeaeb92c upstream.
If we rewind the RING_TAIL on a context, due to a preemption event, we
must force the context restore for the RING_TAIL update to be properly
handled. Rather than note which preemption events may cause us to rewind
the tail, compare the new request's tail with the previously submitted
RING_TAIL, as it turns out that timeslicing was causing unexpected
rewinds.
<idle>-0 0d.s2 1280851190us : __execlists_submission_tasklet: 0000:00:02.0 rcs0: expired last=130:4698, prio=3, hint=3
<idle>-0 0d.s2 1280851192us : __i915_request_unsubmit: 0000:00:02.0 rcs0: fence 66:119966, current 119964
<idle>-0 0d.s2 1280851195us : __i915_request_unsubmit: 0000:00:02.0 rcs0: fence 130:4698, current 4695
<idle>-0 0d.s2 1280851198us : __i915_request_unsubmit: 0000:00:02.0 rcs0: fence 130:4696, current 4695
^---- Note we unwind 2 requests from the same context
<idle>-0 0d.s2 1280851208us : __i915_request_submit: 0000:00:02.0 rcs0: fence 130:4696, current 4695
<idle>-0 0d.s2 1280851213us : __i915_request_submit: 0000:00:02.0 rcs0: fence 134:1508, current 1506
^---- But to apply the new timeslice, we have to replay the first request
before the new client can start -- the unexpected RING_TAIL rewind
<idle>-0 0d.s2 1280851219us : trace_ports: 0000:00:02.0 rcs0: submit { 130:4696*, 134:1508 }
synmark2-5425 2..s. 1280851239us : process_csb: 0000:00:02.0 rcs0: cs-irq head=5, tail=0
synmark2-5425 2..s. 1280851240us : process_csb: 0000:00:02.0 rcs0: csb[0]: status=0x00008002:0x00000000
^---- Preemption event for the ELSP update; note the lite-restore
synmark2-5425 2..s. 1280851243us : trace_ports: 0000:00:02.0 rcs0: preempted { 130:4698, 66:119966 }
synmark2-5425 2..s. 1280851246us : trace_ports: 0000:00:02.0 rcs0: promote { 130:4696*, 134:1508 }
synmark2-5425 2.... 1280851462us : __i915_request_commit: 0000:00:02.0 rcs0: fence 130:4700, current 4695
synmark2-5425 2.... 1280852111us : __i915_request_commit: 0000:00:02.0 rcs0: fence 130:4702, current 4695
synmark2-5425 2.Ns1 1280852296us : process_csb: 0000:00:02.0 rcs0: cs-irq head=0, tail=2
synmark2-5425 2.Ns1 1280852297us : process_csb: 0000:00:02.0 rcs0: csb[1]: status=0x00000814:0x00000000
synmark2-5425 2.Ns1 1280852299us : trace_ports: 0000:00:02.0 rcs0: completed { 130:4696!, 134:1508 }
synmark2-5425 2.Ns1 1280852301us : process_csb: 0000:00:02.0 rcs0: csb[2]: status=0x00000818:0x00000040
synmark2-5425 2.Ns1 1280852302us : trace_ports: 0000:00:02.0 rcs0: completed { 134:1508, 0:0 }
synmark2-5425 2.Ns1 1280852313us : process_csb: process_csb:2336 GEM_BUG_ON(!i915_request_completed(*execlists->active) && !reset_in_progress(execlists))
Fixes: 8ee36e048c98 ("drm/i915/execlists: Minimalistic timeslicing")
Referenecs: 82c69bf58650 ("drm/i915/gt: Detect if we miss WaIdleLiteRestore")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Link: https://patchwork.freedesktop.org/patch/msgid/20200207211452.2860634-1-chris@chris-wilson.co.uk
(cherry picked from commit 5ba32c7be81e53ea8a27190b0f6be98e6c6779af)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gt/intel_engine.h | 8 ++++++++
drivers/gpu/drm/i915/gt/intel_engine_types.h | 1 +
drivers/gpu/drm/i915/gt/intel_lrc.c | 18 ++++++++----------
drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 2 ++
4 files changed, 19 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -250,6 +250,14 @@ static inline u32 intel_ring_wrap(const
return pos & (ring->size - 1);
}
+static inline int intel_ring_direction(const struct intel_ring *ring,
+ u32 next, u32 prev)
+{
+ typecheck(typeof(ring->size), next);
+ typecheck(typeof(ring->size), prev);
+ return (next - prev) << ring->wrap;
+}
+
static inline bool
intel_ring_offset_valid(const struct intel_ring *ring,
unsigned int pos)
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -107,6 +107,7 @@ struct intel_ring {
u32 space;
u32 size;
+ u32 wrap;
u32 effective_size;
};
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -647,7 +647,7 @@ static u64 execlists_update_context(stru
{
struct intel_context *ce = rq->hw_context;
u64 desc = ce->lrc_desc;
- u32 tail;
+ u32 tail, prev;
/*
* WaIdleLiteRestore:bdw,skl
@@ -660,9 +660,15 @@ static u64 execlists_update_context(stru
* subsequent resubmissions (for lite restore). Should that fail us,
* and we try and submit the same tail again, force the context
* reload.
+ *
+ * If we need to return to a preempted context, we need to skip the
+ * lite-restore and force it to reload the RING_TAIL. Otherwise, the
+ * HW has a tendency to ignore us rewinding the TAIL to the end of
+ * an earlier request.
*/
tail = intel_ring_set_tail(rq->ring, rq->tail);
- if (unlikely(ce->lrc_reg_state[CTX_RING_TAIL + 1] == tail))
+ prev = ce->lrc_reg_state[CTX_RING_TAIL + 1];
+ if (unlikely(intel_ring_direction(rq->ring, tail, prev) <= 0))
desc |= CTX_DESC_FORCE_RESTORE;
ce->lrc_reg_state[CTX_RING_TAIL + 1] = tail;
rq->tail = rq->wa_tail;
@@ -1110,14 +1116,6 @@ static void execlists_dequeue(struct int
*/
__unwind_incomplete_requests(engine);
- /*
- * If we need to return to the preempted context, we
- * need to skip the lite-restore and force it to
- * reload the RING_TAIL. Otherwise, the HW has a
- * tendency to ignore us rewinding the TAIL to the
- * end of an earlier request.
- */
- last->hw_context->lrc_desc |= CTX_DESC_FORCE_RESTORE;
last = NULL;
} else if (need_timeslice(engine, last) &&
!timer_pending(&engine->execlists.timer)) {
--- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
@@ -1312,6 +1312,8 @@ intel_engine_create_ring(struct intel_en
kref_init(&ring->ref);
ring->size = size;
+ ring->wrap = BITS_PER_TYPE(ring->size) - ilog2(size);
+
/* Workaround an erratum on the i830 which causes a hang if
* the TAIL pointer points to within the last 2 cachelines
* of the buffer.
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 103/135] drm/i915/gvt: more locking for ppgtt mm LRU list
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (101 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 102/135] drm/i915/execlists: Always force a context reload when rewinding RING_TAIL Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 104/135] drm/bridge: tc358767: fix poll timeouts Greg Kroah-Hartman
` (35 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Igor Druzhinin, Zhenyu Wang
From: Igor Druzhinin <igor.druzhinin@citrix.com>
commit 0e9d7bb293f3f9c3ee376b126141407efb265f31 upstream.
When the lock was introduced in commit 72aabfb862e40 ("drm/i915/gvt: Add mutual
lock for ppgtt mm LRU list") one place got lost.
Fixes: 72aabfb862e4 ("drm/i915/gvt: Add mutual lock for ppgtt mm LRU list")
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1580742421-25194-1-git-send-email-igor.druzhinin@citrix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref
if (mm->type == INTEL_GVT_MM_PPGTT) {
list_del(&mm->ppgtt_mm.list);
+
+ mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
list_del(&mm->ppgtt_mm.lru_list);
+ mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
+
invalidate_ppgtt_mm(mm);
} else {
vfree(mm->ggtt_mm.virtual_ggtt);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 104/135] drm/bridge: tc358767: fix poll timeouts
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (102 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 103/135] drm/i915/gvt: more locking for ppgtt mm LRU list Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 105/135] drm/i915/gt: Protect defer_request() from new waiters Greg Kroah-Hartman
` (34 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Tomi Valkeinen, Andrey Smirnov,
Neil Armstrong
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
commit 8a6483ac634acda3f599f50082c652d2d37199c7 upstream.
Link training fails with:
Link training timeout waiting for LT_LOOPDONE!
main link enable error: -110
This is caused by too tight timeouts, which were changed recently in
aa92213f388b ("drm/bridge: tc358767: Simplify polling in tc_link_training()").
With a quick glance, the commit does not change the timeouts. However,
the method of delaying/sleeping is different, and as the timeout in the
previous implementation was not explicit, the new version in practice
has much tighter timeout.
The same change was made to other parts in the driver, but the link
training timeout is the only one I have seen causing issues.
Nevertheless, 1 us sleep is not very sane, and the timeouts look pretty
tight, so lets fix all the timeouts.
One exception was the aux busy poll, where the poll sleep was much
longer than necessary (or optimal).
I measured the times on my setup, and now the sleep times are set to
such values that they result in multiple loops, but not too many (say,
5-10 loops). The timeouts were all increased to 100ms, which should be
more than enough for all of these, but in case of bad errors, shouldn't
stop the driver as multi-second timeouts could do.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Fixes: aa92213f388b ("drm/bridge: tc358767: Simplify polling in tc_link_training()")
Tested-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191209082707.24531-1-tomi.valkeinen@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/bridge/tc358767.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -294,7 +294,7 @@ static inline int tc_poll_timeout(struct
static int tc_aux_wait_busy(struct tc_data *tc)
{
- return tc_poll_timeout(tc, DP0_AUXSTATUS, AUX_BUSY, 0, 1000, 100000);
+ return tc_poll_timeout(tc, DP0_AUXSTATUS, AUX_BUSY, 0, 100, 100000);
}
static int tc_aux_write_data(struct tc_data *tc, const void *data,
@@ -637,7 +637,7 @@ static int tc_aux_link_setup(struct tc_d
if (ret)
goto err;
- ret = tc_poll_timeout(tc, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 1, 1000);
+ ret = tc_poll_timeout(tc, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 100, 100000);
if (ret == -ETIMEDOUT) {
dev_err(tc->dev, "Timeout waiting for PHY to become ready");
return ret;
@@ -861,7 +861,7 @@ static int tc_wait_link_training(struct
int ret;
ret = tc_poll_timeout(tc, DP0_LTSTAT, LT_LOOPDONE,
- LT_LOOPDONE, 1, 1000);
+ LT_LOOPDONE, 500, 100000);
if (ret) {
dev_err(tc->dev, "Link training timeout waiting for LT_LOOPDONE!\n");
return ret;
@@ -934,7 +934,7 @@ static int tc_main_link_enable(struct tc
dp_phy_ctrl &= ~(DP_PHY_RST | PHY_M1_RST | PHY_M0_RST);
ret = regmap_write(tc->regmap, DP_PHY_CTRL, dp_phy_ctrl);
- ret = tc_poll_timeout(tc, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 1, 1000);
+ ret = tc_poll_timeout(tc, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 500, 100000);
if (ret) {
dev_err(dev, "timeout waiting for phy become ready");
return ret;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 105/135] drm/i915/gt: Protect defer_request() from new waiters
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (103 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 104/135] drm/bridge: tc358767: fix poll timeouts Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 106/135] drm/msm/dpu: fix BGR565 vs RGB565 confusion Greg Kroah-Hartman
` (33 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Chris Wilson, Mika Kuoppala, Jani Nikula
From: Chris Wilson <chris@chris-wilson.co.uk>
commit 19b5f3b419a61808ff2713f1f30b8a88fe14ac9b upstream.
Mika spotted
<4>[17436.705441] general protection fault: 0000 [#1] PREEMPT SMP PTI
<4>[17436.705447] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.5.0+ #1
<4>[17436.705449] Hardware name: System manufacturer System Product Name/Z170M-PLUS, BIOS 3805 05/16/2018
<4>[17436.705512] RIP: 0010:__execlists_submission_tasklet+0xc4d/0x16e0 [i915]
<4>[17436.705516] Code: c5 4c 8d 60 e0 75 17 e9 8c 07 00 00 49 8b 44 24 20 49 39 c5 4c 8d 60 e0 0f 84 7a 07 00 00 49 8b 5c 24 08 49 8b 87 80 00 00 00 <48> 39 83 d8 fe ff ff 75 d9 48 8b 83 88 fe ff ff a8 01 0f 84 b6 05
<4>[17436.705518] RSP: 0018:ffffc9000012ce80 EFLAGS: 00010083
<4>[17436.705521] RAX: ffff88822ae42000 RBX: 5a5a5a5a5a5a5a5a RCX: dead000000000122
<4>[17436.705523] RDX: ffff88822ae42588 RSI: ffff8881e32a7908 RDI: ffff8881c429fd48
<4>[17436.705525] RBP: ffffc9000012cf00 R08: ffff88822ae42588 R09: 00000000fffffffe
<4>[17436.705527] R10: ffff8881c429fb80 R11: 00000000a677cf08 R12: ffff8881c42a0aa8
<4>[17436.705529] R13: ffff8881c429fd38 R14: ffff88822ae42588 R15: ffff8881c429fb80
<4>[17436.705532] FS: 0000000000000000(0000) GS:ffff88822ed00000(0000) knlGS:0000000000000000
<4>[17436.705534] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[17436.705536] CR2: 00007f858c76d000 CR3: 0000000005610003 CR4: 00000000003606e0
<4>[17436.705538] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>[17436.705540] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
<4>[17436.705542] Call Trace:
<4>[17436.705545] <IRQ>
<4>[17436.705603] execlists_submission_tasklet+0xc0/0x130 [i915]
which is us consuming a partially initialised new waiter in
defer_requests(). We can prevent this by initialising the i915_dependency
prior to making it visible, and since we are using a concurrent
list_add/iterator mark them up to the compiler.
Fixes: 8ee36e048c98 ("drm/i915/execlists: Minimalistic timeslicing")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200206204915.2636606-2-chris@chris-wilson.co.uk
(cherry picked from commit f14f27b1663269a81ed62d3961fe70250a1a0623)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 7 ++++++-
drivers/gpu/drm/i915/i915_scheduler.c | 6 ++++--
2 files changed, 10 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -933,6 +933,11 @@ last_active(const struct intel_engine_ex
return *last;
}
+#define for_each_waiter(p__, rq__) \
+ list_for_each_entry_lockless(p__, \
+ &(rq__)->sched.waiters_list, \
+ wait_link)
+
static void defer_request(struct i915_request *rq, struct list_head * const pl)
{
LIST_HEAD(list);
@@ -950,7 +955,7 @@ static void defer_request(struct i915_re
GEM_BUG_ON(i915_request_is_active(rq));
list_move_tail(&rq->sched.link, pl);
- list_for_each_entry(p, &rq->sched.waiters_list, wait_link) {
+ for_each_waiter(p, rq) {
struct i915_request *w =
container_of(p->waiter, typeof(*w), sched);
--- a/drivers/gpu/drm/i915/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/i915_scheduler.c
@@ -418,8 +418,6 @@ bool __i915_sched_node_add_dependency(st
if (!node_signaled(signal)) {
INIT_LIST_HEAD(&dep->dfs_link);
- list_add(&dep->wait_link, &signal->waiters_list);
- list_add(&dep->signal_link, &node->signalers_list);
dep->signaler = signal;
dep->waiter = node;
dep->flags = flags;
@@ -429,6 +427,10 @@ bool __i915_sched_node_add_dependency(st
!node_started(signal))
node->flags |= I915_SCHED_HAS_SEMAPHORE_CHAIN;
+ /* All set, now publish. Beware the lockless walkers. */
+ list_add(&dep->signal_link, &node->signalers_list);
+ list_add_rcu(&dep->wait_link, &signal->waiters_list);
+
/*
* As we do not allow WAIT to preempt inflight requests,
* once we have executed a request, along with triggering
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 106/135] drm/msm/dpu: fix BGR565 vs RGB565 confusion
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (104 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 105/135] drm/i915/gt: Protect defer_request() from new waiters Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 107/135] scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout" Greg Kroah-Hartman
` (32 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Rob Clark, Sean Paul
From: Rob Clark <robdclark@chromium.org>
commit 8fc7036ee652207ca992fbb9abb64090c355a9e0 upstream.
The component order between the two was swapped, resulting in incorrect
color when games with 565 visual hit the overlay path instead of GPU
composition.
Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
@@ -255,13 +255,13 @@ static const struct dpu_format dpu_forma
INTERLEAVED_RGB_FMT(RGB565,
0, COLOR_5BIT, COLOR_6BIT, COLOR_5BIT,
- C2_R_Cr, C0_G_Y, C1_B_Cb, 0, 3,
+ C1_B_Cb, C0_G_Y, C2_R_Cr, 0, 3,
false, 2, 0,
DPU_FETCH_LINEAR, 1),
INTERLEAVED_RGB_FMT(BGR565,
0, COLOR_5BIT, COLOR_6BIT, COLOR_5BIT,
- C1_B_Cb, C0_G_Y, C2_R_Cr, 0, 3,
+ C2_R_Cr, C0_G_Y, C1_B_Cb, 0, 3,
false, 2, 0,
DPU_FETCH_LINEAR, 1),
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 107/135] scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout"
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (105 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 106/135] drm/msm/dpu: fix BGR565 vs RGB565 confusion Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 108/135] scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session" Greg Kroah-Hartman
` (31 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Rahul Kundu, Mike Marciniszyn,
Sagi Grimberg, Dakshaja Uppalapati, Bart Van Assche,
Martin K. Petersen
From: Bart Van Assche <bvanassche@acm.org>
commit 76261ada16dcc3be610396a46d35acc3efbda682 upstream.
Since commit 04060db41178 introduces soft lockups when toggling network
interfaces, revert it.
Link: https://marc.info/?l=target-devel&m=158157054906196
Cc: Rahul Kundu <rahul.kundu@chelsio.com>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Reported-by: Dakshaja Uppalapati <dakshaja@chelsio.com>
Fixes: 04060db41178 ("scsi: RDMA/isert: Fix a recently introduced regression related to logout")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/infiniband/ulp/isert/ib_isert.c | 12 ++++++++++++
drivers/target/iscsi/iscsi_target.c | 6 +++---
2 files changed, 15 insertions(+), 3 deletions(-)
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -2575,6 +2575,17 @@ isert_wait4logout(struct isert_conn *ise
}
}
+static void
+isert_wait4cmds(struct iscsi_conn *conn)
+{
+ isert_info("iscsi_conn %p\n", conn);
+
+ if (conn->sess) {
+ target_sess_cmd_list_set_waiting(conn->sess->se_sess);
+ target_wait_for_sess_cmds(conn->sess->se_sess);
+ }
+}
+
/**
* isert_put_unsol_pending_cmds() - Drop commands waiting for
* unsolicitate dataout
@@ -2622,6 +2633,7 @@ static void isert_wait_conn(struct iscsi
ib_drain_qp(isert_conn->qp);
isert_put_unsol_pending_cmds(conn);
+ isert_wait4cmds(conn);
isert_wait4logout(isert_conn);
queue_work(isert_release_wq, &isert_conn->release_work);
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -4151,6 +4151,9 @@ int iscsit_close_connection(
iscsit_stop_nopin_response_timer(conn);
iscsit_stop_nopin_timer(conn);
+ if (conn->conn_transport->iscsit_wait_conn)
+ conn->conn_transport->iscsit_wait_conn(conn);
+
/*
* During Connection recovery drop unacknowledged out of order
* commands for this connection, and prepare the other commands
@@ -4236,9 +4239,6 @@ int iscsit_close_connection(
target_sess_cmd_list_set_waiting(sess->se_sess);
target_wait_for_sess_cmds(sess->se_sess);
- if (conn->conn_transport->iscsit_wait_conn)
- conn->conn_transport->iscsit_wait_conn(conn);
-
ahash_request_free(conn->conn_tx_hash);
if (conn->conn_rx_hash) {
struct crypto_ahash *tfm;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 108/135] scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (106 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 107/135] scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout" Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 109/135] usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus Greg Kroah-Hartman
` (30 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Rahul Kundu, Mike Marciniszyn,
Sagi Grimberg, Dakshaja Uppalapati, Bart Van Assche,
Martin K. Petersen
From: Bart Van Assche <bvanassche@acm.org>
commit 807b9515b7d044cf77df31f1af9d842a76ecd5cb upstream.
Since commit e9d3009cb936 introduced a regression and since the fix for
that regression was not perfect, revert this commit.
Link: https://marc.info/?l=target-devel&m=158157054906195
Cc: Rahul Kundu <rahul.kundu@chelsio.com>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Reported-by: Dakshaja Uppalapati <dakshaja@chelsio.com>
Fixes: e9d3009cb936 ("scsi: target: iscsi: Wait for all commands to finish before freeing a session")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/target/iscsi/iscsi_target.c | 10 ++--------
include/scsi/iscsi_proto.h | 1 -
2 files changed, 2 insertions(+), 9 deletions(-)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1165,9 +1165,7 @@ int iscsit_setup_scsi_cmd(struct iscsi_c
hdr->cmdsn, be32_to_cpu(hdr->data_length), payload_length,
conn->cid);
- if (target_get_sess_cmd(&cmd->se_cmd, true) < 0)
- return iscsit_add_reject_cmd(cmd,
- ISCSI_REASON_WAITING_FOR_LOGOUT, buf);
+ target_get_sess_cmd(&cmd->se_cmd, true);
cmd->sense_reason = transport_lookup_cmd_lun(&cmd->se_cmd,
scsilun_to_int(&hdr->lun));
@@ -2004,9 +2002,7 @@ iscsit_handle_task_mgt_cmd(struct iscsi_
conn->sess->se_sess, 0, DMA_NONE,
TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
- if (target_get_sess_cmd(&cmd->se_cmd, true) < 0)
- return iscsit_add_reject_cmd(cmd,
- ISCSI_REASON_WAITING_FOR_LOGOUT, buf);
+ target_get_sess_cmd(&cmd->se_cmd, true);
/*
* TASK_REASSIGN for ERL=2 / connection stays inside of
@@ -4236,8 +4232,6 @@ int iscsit_close_connection(
* must wait until they have completed.
*/
iscsit_check_conn_usage_count(conn);
- target_sess_cmd_list_set_waiting(sess->se_sess);
- target_wait_for_sess_cmds(sess->se_sess);
ahash_request_free(conn->conn_tx_hash);
if (conn->conn_rx_hash) {
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -627,7 +627,6 @@ struct iscsi_reject {
#define ISCSI_REASON_BOOKMARK_INVALID 9
#define ISCSI_REASON_BOOKMARK_NO_RESOURCES 10
#define ISCSI_REASON_NEGOTIATION_RESET 11
-#define ISCSI_REASON_WAITING_FOR_LOGOUT 12
/* Max. number of Key=Value pairs in a text message */
#define MAX_KEY_VALUE_PAIRS 8192
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 109/135] usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (107 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 108/135] scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session" Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 110/135] usb: dwc2: Fix in ISOC request length checking Greg Kroah-Hartman
` (29 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Jack Pham, Felipe Balbi
From: Jack Pham <jackp@codeaurora.org>
commit c724417baf162bd3e035659e22cdf990cfb0d917 upstream.
SuperSpeedPlus peripherals must report their bMaxPower of the
configuration descriptor in units of 8mA as per the USB 3.2
specification. The current switch statement in encode_bMaxPower()
only checks for USB_SPEED_SUPER but not USB_SPEED_SUPER_PLUS so
the latter falls back to USB 2.0 encoding which uses 2mA units.
Replace the switch with a simple if/else.
Fixes: eae5820b852f ("usb: gadget: composite: Write SuperSpeedPlus config descriptors")
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/composite.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -437,12 +437,10 @@ static u8 encode_bMaxPower(enum usb_devi
val = CONFIG_USB_GADGET_VBUS_DRAW;
if (!val)
return 0;
- switch (speed) {
- case USB_SPEED_SUPER:
- return DIV_ROUND_UP(val, 8);
- default:
+ if (speed < USB_SPEED_SUPER)
return DIV_ROUND_UP(val, 2);
- }
+ else
+ return DIV_ROUND_UP(val, 8);
}
static int config_buf(struct usb_configuration *config,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 110/135] usb: dwc2: Fix in ISOC request length checking
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (108 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 109/135] usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 111/135] staging: rtl8723bs: fix copy of overlapping memory Greg Kroah-Hartman
` (28 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Minas Harutyunyan, Felipe Balbi
From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
commit 860ef6cd3f90b84a1832f8a6485c90c34d3b588b upstream.
Moved ISOC request length checking from dwc2_hsotg_start_req() function to
dwc2_hsotg_ep_queue().
Fixes: 4fca54aa58293 ("usb: gadget: s3c-hsotg: add multi count support")
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/dwc2/gadget.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -1083,11 +1083,6 @@ static void dwc2_hsotg_start_req(struct
else
packets = 1; /* send one packet if length is zero. */
- if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) {
- dev_err(hsotg->dev, "req length > maxpacket*mc\n");
- return;
- }
-
if (dir_in && index != 0)
if (hs_ep->isochronous)
epsize = DXEPTSIZ_MC(packets);
@@ -1391,6 +1386,13 @@ static int dwc2_hsotg_ep_queue(struct us
req->actual = 0;
req->status = -EINPROGRESS;
+ /* Don't queue ISOC request if length greater than mps*mc */
+ if (hs_ep->isochronous &&
+ req->length > (hs_ep->mc * hs_ep->ep.maxpacket)) {
+ dev_err(hs->dev, "req length > maxpacket*mc\n");
+ return -EINVAL;
+ }
+
/* In DDMA mode for ISOC's don't queue request if length greater
* than descriptor limits.
*/
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 111/135] staging: rtl8723bs: fix copy of overlapping memory
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (109 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 110/135] usb: dwc2: Fix in ISOC request length checking Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 112/135] staging: greybus: use after free in gb_audio_manager_remove_all() Greg Kroah-Hartman
` (27 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Colin Ian King, Hans de Goede
From: Colin Ian King <colin.king@canonical.com>
commit 8ae9a588ca35eb9c32dc03299c5e1f4a1e9a9617 upstream.
Currently the rtw_sprintf prints the contents of thread_name
onto thread_name and this can lead to a potential copy of a
string over itself. Avoid this by printing the literal string RTWHALXT
instread of the contents of thread_name.
Addresses-Coverity: ("copy of overlapping memory")
Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200126220549.9849-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8723bs/hal/rtl8723bs_xmit.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/staging/rtl8723bs/hal/rtl8723bs_xmit.c
+++ b/drivers/staging/rtl8723bs/hal/rtl8723bs_xmit.c
@@ -476,14 +476,13 @@ int rtl8723bs_xmit_thread(void *context)
s32 ret;
struct adapter *padapter;
struct xmit_priv *pxmitpriv;
- u8 thread_name[20] = "RTWHALXT";
-
+ u8 thread_name[20];
ret = _SUCCESS;
padapter = context;
pxmitpriv = &padapter->xmitpriv;
- rtw_sprintf(thread_name, 20, "%s-"ADPT_FMT, thread_name, ADPT_ARG(padapter));
+ rtw_sprintf(thread_name, 20, "RTWHALXT-" ADPT_FMT, ADPT_ARG(padapter));
thread_enter(thread_name);
DBG_871X("start "FUNC_ADPT_FMT"\n", FUNC_ADPT_ARG(padapter));
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 112/135] staging: greybus: use after free in gb_audio_manager_remove_all()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (110 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 111/135] staging: rtl8723bs: fix copy of overlapping memory Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 113/135] ASoC: atmel: fix atmel_ssc_set_audio link failure Greg Kroah-Hartman
` (26 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Viresh Kumar, Vaibhav Agarwal
From: Dan Carpenter <dan.carpenter@oracle.com>
commit b7db58105b80fa9232719c8329b995b3addfab55 upstream.
When we call kobject_put() and it's the last reference to the kobject
then it calls gb_audio_module_release() and frees module. We dereference
"module" on the next line which is a use after free.
Fixes: c77f85bbc91a ("greybus: audio: Fix incorrect counting of 'ida'")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Link: https://lore.kernel.org/r/20200205123217.jreendkyxulqsool@kili.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/greybus/audio_manager.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/greybus/audio_manager.c
+++ b/drivers/staging/greybus/audio_manager.c
@@ -92,8 +92,8 @@ void gb_audio_manager_remove_all(void)
list_for_each_entry_safe(module, next, &modules_list, list) {
list_del(&module->list);
- kobject_put(&module->kobj);
ida_simple_remove(&module_id, module->id);
+ kobject_put(&module->kobj);
}
is_empty = list_empty(&modules_list);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 113/135] ASoC: atmel: fix atmel_ssc_set_audio link failure
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (111 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 112/135] staging: greybus: use after free in gb_audio_manager_remove_all() Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 114/135] ASoC: fsl_sai: Fix exiting path on probing failure Greg Kroah-Hartman
` (25 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Arnd Bergmann, Codrin Ciubotariu,
Michał Mirosław, Mark Brown
From: Arnd Bergmann <arnd@arndb.de>
commit 9437bfda00f3b26eb5f475737ddaaf4dc07fee4f upstream.
The ssc audio driver can call into both pdc and dma backends. With the
latest rework, the logic to do this in a safe way avoiding link errors
was removed, bringing back link errors that were fixed long ago in commit
061981ff8cc8 ("ASoC: atmel: properly select dma driver state") such as
sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_set_audio':
atmel_ssc_dai.c:(.text+0xac): undefined reference to `atmel_pcm_pdc_platform_register'
Fix it this time using Makefile hacks and a comment to prevent this
from accidentally getting removed again rather than Kconfig hacks.
Fixes: 18291410557f ("ASoC: atmel: enable SOC_SSC_PDC and SOC_SSC_DMA in Kconfig")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20200130130545.31148-1-codrin.ciubotariu@microchip.com
Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/atmel/Kconfig | 4 ++--
sound/soc/atmel/Makefile | 10 ++++++++--
2 files changed, 10 insertions(+), 4 deletions(-)
--- a/sound/soc/atmel/Kconfig
+++ b/sound/soc/atmel/Kconfig
@@ -10,11 +10,11 @@ config SND_ATMEL_SOC
if SND_ATMEL_SOC
config SND_ATMEL_SOC_PDC
- tristate
+ bool
depends on HAS_DMA
config SND_ATMEL_SOC_DMA
- tristate
+ bool
select SND_SOC_GENERIC_DMAENGINE_PCM
config SND_ATMEL_SOC_SSC
--- a/sound/soc/atmel/Makefile
+++ b/sound/soc/atmel/Makefile
@@ -6,8 +6,14 @@ snd-soc-atmel_ssc_dai-objs := atmel_ssc_
snd-soc-atmel-i2s-objs := atmel-i2s.o
snd-soc-mchp-i2s-mcc-objs := mchp-i2s-mcc.o
-obj-$(CONFIG_SND_ATMEL_SOC_PDC) += snd-soc-atmel-pcm-pdc.o
-obj-$(CONFIG_SND_ATMEL_SOC_DMA) += snd-soc-atmel-pcm-dma.o
+# pdc and dma need to both be built-in if any user of
+# ssc is built-in.
+ifdef CONFIG_SND_ATMEL_SOC_PDC
+obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel-pcm-pdc.o
+endif
+ifdef CONFIG_SND_ATMEL_SOC_DMA
+obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel-pcm-dma.o
+endif
obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel_ssc_dai.o
obj-$(CONFIG_SND_ATMEL_SOC_I2S) += snd-soc-atmel-i2s.o
obj-$(CONFIG_SND_MCHP_SOC_I2S_MCC) += snd-soc-mchp-i2s-mcc.o
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 114/135] ASoC: fsl_sai: Fix exiting path on probing failure
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (112 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 113/135] ASoC: atmel: fix atmel_ssc_set_audio link failure Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 115/135] ecryptfs: replace BUG_ON with error handling code Greg Kroah-Hartman
` (24 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Oleksandr Suvorov, Mark Brown
From: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
commit d1520889782dff58610c0b6b54d4cf3211ceb690 upstream.
If the imx-sdma driver is built as a module, the fsl-sai device doesn't
disable on probing failure, which causes the warning in the next probing:
==================================================================
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
fsl-sai 308a0000.sai: Unbalanced pm_runtime_enable!
==================================================================
Disabling the device properly fixes the issue.
Fixes: 812ad463e089 ("ASoC: fsl_sai: Add support for runtime pm")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Link: https://lore.kernel.org/r/20200205160436.3813642-1-oleksandr.suvorov@toradex.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/fsl/fsl_sai.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1019,12 +1019,24 @@ static int fsl_sai_probe(struct platform
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
&fsl_sai_dai, 1);
if (ret)
- return ret;
+ goto err_pm_disable;
- if (sai->soc_data->use_imx_pcm)
- return imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
- else
- return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (sai->soc_data->use_imx_pcm) {
+ ret = imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
+ if (ret)
+ goto err_pm_disable;
+ } else {
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ return ret;
+
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+
+ return ret;
}
static int fsl_sai_remove(struct platform_device *pdev)
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 115/135] ecryptfs: replace BUG_ON with error handling code
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (113 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 114/135] ASoC: fsl_sai: Fix exiting path on probing failure Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 116/135] iommu/vt-d: Fix compile warning from intel-svm.h Greg Kroah-Hartman
` (23 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Aditya Pakki, Tyler Hicks
From: Aditya Pakki <pakki001@umn.edu>
commit 2c2a7552dd6465e8fde6bc9cccf8d66ed1c1eb72 upstream.
In crypt_scatterlist, if the crypt_stat argument is not set up
correctly, the kernel crashes. Instead, by returning an error code
upstream, the error is handled safely.
The issue is detected via a static analysis tool written by us.
Fixes: 237fead619984 (ecryptfs: fs/Makefile and fs/Kconfig)
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Tyler Hicks <code@tyhicks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ecryptfs/crypto.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -311,8 +311,10 @@ static int crypt_scatterlist(struct ecry
struct extent_crypt_result ecr;
int rc = 0;
- BUG_ON(!crypt_stat || !crypt_stat->tfm
- || !(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED));
+ if (!crypt_stat || !crypt_stat->tfm
+ || !(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED))
+ return -EINVAL;
+
if (unlikely(ecryptfs_verbosity > 0)) {
ecryptfs_printk(KERN_DEBUG, "Key size [%zd]; key:\n",
crypt_stat->key_size);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 116/135] iommu/vt-d: Fix compile warning from intel-svm.h
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (114 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 115/135] ecryptfs: replace BUG_ON with error handling code Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 117/135] crypto: rename sm3-256 to sm3 in hash_algo_name Greg Kroah-Hartman
` (22 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Borislav Petkov, Joerg Roedel
From: Joerg Roedel <jroedel@suse.de>
commit e7598fac323aad0e502415edeffd567315994dd6 upstream.
The intel_svm_is_pasid_valid() needs to be marked inline, otherwise it
causes the compile warning below:
CC [M] drivers/dma/idxd/cdev.o
In file included from drivers/dma/idxd/cdev.c:9:0:
./include/linux/intel-svm.h:125:12: warning: ‘intel_svm_is_pasid_valid’ defined but not used [-Wunused-function]
static int intel_svm_is_pasid_valid(struct device *dev, int pasid)
^~~~~~~~~~~~~~~~~~~~~~~~
Reported-by: Borislav Petkov <bp@alien8.de>
Fixes: 15060aba71711 ('iommu/vt-d: Helper function to query if a pasid has any active users')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/intel-svm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/intel-svm.h
+++ b/include/linux/intel-svm.h
@@ -122,7 +122,7 @@ static inline int intel_svm_unbind_mm(st
BUG();
}
-static int intel_svm_is_pasid_valid(struct device *dev, int pasid)
+static inline int intel_svm_is_pasid_valid(struct device *dev, int pasid)
{
return -EINVAL;
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 117/135] crypto: rename sm3-256 to sm3 in hash_algo_name
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (115 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 116/135] iommu/vt-d: Fix compile warning from intel-svm.h Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 118/135] genirq/proc: Reject invalid affinity masks (again) Greg Kroah-Hartman
` (21 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Tianjia Zhang, Pascal van Leeuwen,
Mimi Zohar
From: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
commit 6a30e1b1dcad0ba94fae757f797812d7d8dcb72c upstream.
The name sm3-256 is defined in hash_algo_name in hash_info, but the
algorithm name implemented in sm3_generic.c is sm3, which will cause
the sm3-256 algorithm to be not found in some application scenarios of
the hash algorithm, and an ENOENT error will occur. For example,
IMA, keys, and other subsystems that reference hash_algo_name all use
the hash algorithm of sm3.
Fixes: 5ca4c20cfd37 ("keys, trusted: select hash algorithm for TPM2 chips")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Pascal van Leeuwen <pvanleeuwen@rambus.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
crypto/hash_info.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/crypto/hash_info.c
+++ b/crypto/hash_info.c
@@ -26,7 +26,7 @@ const char *const hash_algo_name[HASH_AL
[HASH_ALGO_TGR_128] = "tgr128",
[HASH_ALGO_TGR_160] = "tgr160",
[HASH_ALGO_TGR_192] = "tgr192",
- [HASH_ALGO_SM3_256] = "sm3-256",
+ [HASH_ALGO_SM3_256] = "sm3",
[HASH_ALGO_STREEBOG_256] = "streebog256",
[HASH_ALGO_STREEBOG_512] = "streebog512",
};
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 118/135] genirq/proc: Reject invalid affinity masks (again)
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (116 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 117/135] crypto: rename sm3-256 to sm3 in hash_algo_name Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 119/135] bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill Greg Kroah-Hartman
` (20 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Qian Cai, Thomas Gleixner
From: Thomas Gleixner <tglx@linutronix.de>
commit cba6437a1854fde5934098ec3bd0ee83af3129f5 upstream.
Qian Cai reported that the WARN_ON() in the x86/msi affinity setting code,
which catches cases where the affinity setting is not done on the CPU which
is the current target of the interrupt, triggers during CPU hotplug stress
testing.
It turns out that the warning which was added with the commit addressing
the MSI affinity race unearthed yet another long standing bug.
If user space writes a bogus affinity mask, i.e. it contains no online CPUs,
then it calls irq_select_affinity_usr(). This was introduced for ALPHA in
eee45269b0f5 ("[PATCH] Alpha: convert to generic irq framework (generic part)")
and subsequently made available for all architectures in
18404756765c ("genirq: Expose default irq affinity mask (take 3)")
which introduced the circumvention of the affinity setting restrictions for
interrupt which cannot be moved in process context.
The whole exercise is bogus in various aspects:
1) If the interrupt is already started up then there is absolutely
no point to honour a bogus interrupt affinity setting from user
space. The interrupt is already assigned to an online CPU and it
does not make any sense to reassign it to some other randomly
chosen online CPU.
2) If the interupt is not yet started up then there is no point
either. A subsequent startup of the interrupt will invoke
irq_setup_affinity() anyway which will chose a valid target CPU.
So the only correct solution is to just return -EINVAL in case user space
wrote an affinity mask which does not contain any online CPUs, except for
ALPHA which has it's own magic sauce for this.
Fixes: 18404756765c ("genirq: Expose default irq affinity mask (take 3)")
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Qian Cai <cai@lca.pw>
Link: https://lkml.kernel.org/r/878sl8xdbm.fsf@nanos.tec.linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/irq/internals.h | 2 --
kernel/irq/manage.c | 18 ++----------------
kernel/irq/proc.c | 22 ++++++++++++++++++++++
3 files changed, 24 insertions(+), 18 deletions(-)
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -128,8 +128,6 @@ static inline void unregister_handler_pr
extern bool irq_can_set_affinity_usr(unsigned int irq);
-extern int irq_select_affinity_usr(unsigned int irq);
-
extern void irq_set_thread_affinity(struct irq_desc *desc);
extern int irq_do_set_affinity(struct irq_data *data,
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -442,23 +442,9 @@ int irq_setup_affinity(struct irq_desc *
{
return irq_select_affinity(irq_desc_get_irq(desc));
}
-#endif
+#endif /* CONFIG_AUTO_IRQ_AFFINITY */
+#endif /* CONFIG_SMP */
-/*
- * Called when a bogus affinity is set via /proc/irq
- */
-int irq_select_affinity_usr(unsigned int irq)
-{
- struct irq_desc *desc = irq_to_desc(irq);
- unsigned long flags;
- int ret;
-
- raw_spin_lock_irqsave(&desc->lock, flags);
- ret = irq_setup_affinity(desc);
- raw_spin_unlock_irqrestore(&desc->lock, flags);
- return ret;
-}
-#endif
/**
* irq_set_vcpu_affinity - Set vcpu affinity for the interrupt
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -111,6 +111,28 @@ static int irq_affinity_list_proc_show(s
return show_irq_affinity(AFFINITY_LIST, m);
}
+#ifndef CONFIG_AUTO_IRQ_AFFINITY
+static inline int irq_select_affinity_usr(unsigned int irq)
+{
+ /*
+ * If the interrupt is started up already then this fails. The
+ * interrupt is assigned to an online CPU already. There is no
+ * point to move it around randomly. Tell user space that the
+ * selected mask is bogus.
+ *
+ * If not then any change to the affinity is pointless because the
+ * startup code invokes irq_setup_affinity() which will select
+ * a online CPU anyway.
+ */
+ return -EINVAL;
+}
+#else
+/* ALPHA magic affinity auto selector. Keep it for historical reasons. */
+static inline int irq_select_affinity_usr(unsigned int irq)
+{
+ return irq_select_affinity(irq);
+}
+#endif
static ssize_t write_irq_affinity(int type, struct file *file,
const char __user *buffer, size_t count, loff_t *pos)
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 119/135] bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (117 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 118/135] genirq/proc: Reject invalid affinity masks (again) Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 120/135] arm64: lse: Fix LSE atomics with LLVM Greg Kroah-Hartman
` (19 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Johannes Krude, Daniel Borkmann,
Jakub Kicinski
From: Johannes Krude <johannes@krude.de>
commit e20d3a055a457a10a4c748ce5b7c2ed3173a1324 upstream.
This if guards whether user-space wants a copy of the offload-jited
bytecode and whether this bytecode exists. By erroneously doing a bitwise
AND instead of a logical AND on user- and kernel-space buffer-size can lead
to no data being copied to user-space especially when user-space size is a
power of two and bigger then the kernel-space buffer.
Fixes: fcfb126defda ("bpf: add new jited info fields in bpf_dev_offload and bpf_prog_info")
Signed-off-by: Johannes Krude <johannes@krude.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/bpf/20200212193227.GA3769@phlox.h.transitiv.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/bpf/offload.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/bpf/offload.c
+++ b/kernel/bpf/offload.c
@@ -321,7 +321,7 @@ int bpf_prog_offload_info_fill(struct bp
ulen = info->jited_prog_len;
info->jited_prog_len = aux->offload->jited_len;
- if (info->jited_prog_len & ulen) {
+ if (info->jited_prog_len && ulen) {
uinsns = u64_to_user_ptr(info->jited_prog_insns);
ulen = min_t(u32, info->jited_prog_len, ulen);
if (copy_to_user(uinsns, aux->offload->jited_image, ulen)) {
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 120/135] arm64: lse: Fix LSE atomics with LLVM
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (118 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 119/135] bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 121/135] io_uring: fix __io_iopoll_check deadlock in io_sq_thread Greg Kroah-Hartman
` (18 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Catalin Marinas, Will Deacon,
Amit Kachhap, Sami Tolvanen, Vincenzo Frascino
From: Vincenzo Frascino <vincenzo.frascino@arm.com>
commit dd1f6308b28edf0452dd5dc7877992903ec61e69 upstream.
Commit e0d5896bd356 ("arm64: lse: fix LSE atomics with LLVM's integrated
assembler") broke the build when clang is used in connjunction with the
binutils assembler ("-no-integrated-as"). This happens because
__LSE_PREAMBLE is defined as ".arch armv8-a+lse", which overrides the
version of the CPU architecture passed via the "-march" paramter to gas:
$ aarch64-none-linux-gnu-as -EL -I ./arch/arm64/include
-I ./arch/arm64/include/generated
-I ./include -I ./include
-I ./arch/arm64/include/uapi
-I ./arch/arm64/include/generated/uapi
-I ./include/uapi -I ./include/generated/uapi
-I ./init -I ./init
-march=armv8.3-a -o init/do_mounts.o
/tmp/do_mounts-d7992a.s
/tmp/do_mounts-d7992a.s: Assembler messages:
/tmp/do_mounts-d7992a.s:1959: Error: selected processor does not support `autiasp'
/tmp/do_mounts-d7992a.s:2021: Error: selected processor does not support `paciasp'
/tmp/do_mounts-d7992a.s:2157: Error: selected processor does not support `autiasp'
/tmp/do_mounts-d7992a.s:2175: Error: selected processor does not support `paciasp'
/tmp/do_mounts-d7992a.s:2494: Error: selected processor does not support `autiasp'
Fix the issue by replacing ".arch armv8-a+lse" with ".arch_extension lse".
Sami confirms that the clang integrated assembler does now support the
'.arch_extension' directive, so this change will be fine even for LTO
builds in future.
Fixes: e0d5896bd356cd ("arm64: lse: fix LSE atomics with LLVM's integrated assembler")
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Reported-by: Amit Kachhap <Amit.Kachhap@arm.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/include/asm/lse.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/include/asm/lse.h
+++ b/arch/arm64/include/asm/lse.h
@@ -6,7 +6,7 @@
#if defined(CONFIG_AS_LSE) && defined(CONFIG_ARM64_LSE_ATOMICS)
-#define __LSE_PREAMBLE ".arch armv8-a+lse\n"
+#define __LSE_PREAMBLE ".arch_extension lse\n"
#include <linux/compiler_types.h>
#include <linux/export.h>
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 121/135] io_uring: fix __io_iopoll_check deadlock in io_sq_thread
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (119 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 120/135] arm64: lse: Fix LSE atomics with LLVM Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 122/135] ALSA: rawmidi: Avoid bit fields for state flags Greg Kroah-Hartman
` (17 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Xiaoguang Wang, Jens Axboe
From: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
commit c7849be9cc2dd2754c48ddbaca27c2de6d80a95d upstream.
Since commit a3a0e43fd770 ("io_uring: don't enter poll loop if we have
CQEs pending"), if we already events pending, we won't enter poll loop.
In case SETUP_IOPOLL and SETUP_SQPOLL are both enabled, if app has
been terminated and don't reap pending events which are already in cq
ring, and there are some reqs in poll_list, io_sq_thread will enter
__io_iopoll_check(), and find pending events, then return, this loop
will never have a chance to exit.
I have seen this issue in fio stress tests, to fix this issue, let
io_sq_thread call io_iopoll_getevents() with argument 'min' being zero,
and remove __io_iopoll_check().
Fixes: a3a0e43fd770 ("io_uring: don't enter poll loop if we have CQEs pending")
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/io_uring.c | 27 +++++++++------------------
1 file changed, 9 insertions(+), 18 deletions(-)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -882,11 +882,17 @@ static void io_iopoll_reap_events(struct
mutex_unlock(&ctx->uring_lock);
}
-static int __io_iopoll_check(struct io_ring_ctx *ctx, unsigned *nr_events,
- long min)
+static int io_iopoll_check(struct io_ring_ctx *ctx, unsigned *nr_events,
+ long min)
{
int iters = 0, ret = 0;
+ /*
+ * We disallow the app entering submit/complete with polling, but we
+ * still need to lock the ring to prevent racing with polled issue
+ * that got punted to a workqueue.
+ */
+ mutex_lock(&ctx->uring_lock);
do {
int tmin = 0;
@@ -922,21 +928,6 @@ static int __io_iopoll_check(struct io_r
ret = 0;
} while (min && !*nr_events && !need_resched());
- return ret;
-}
-
-static int io_iopoll_check(struct io_ring_ctx *ctx, unsigned *nr_events,
- long min)
-{
- int ret;
-
- /*
- * We disallow the app entering submit/complete with polling, but we
- * still need to lock the ring to prevent racing with polled issue
- * that got punted to a workqueue.
- */
- mutex_lock(&ctx->uring_lock);
- ret = __io_iopoll_check(ctx, nr_events, min);
mutex_unlock(&ctx->uring_lock);
return ret;
}
@@ -2721,7 +2712,7 @@ static int io_sq_thread(void *data)
*/
mutex_lock(&ctx->uring_lock);
if (!list_empty(&ctx->poll_list))
- __io_iopoll_check(ctx, &nr_events, 0);
+ io_iopoll_getevents(ctx, &nr_events, 0);
else
inflight = 0;
mutex_unlock(&ctx->uring_lock);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 122/135] ALSA: rawmidi: Avoid bit fields for state flags
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (120 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 121/135] io_uring: fix __io_iopoll_check deadlock in io_sq_thread Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 123/135] ALSA: seq: Avoid concurrent access to queue flags Greg Kroah-Hartman
` (16 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, syzbot+576cc007eb9f2c968200, Takashi Iwai
From: Takashi Iwai <tiwai@suse.de>
commit dfa9a5efe8b932a84b3b319250aa3ac60c20f876 upstream.
The rawmidi state flags (opened, append, active_sensing) are stored in
bit fields that can be potentially racy when concurrently accessed
without any locks. Although the current code should be fine, there is
also no any real benefit by keeping the bitfields for this kind of
short number of members.
This patch changes those bit fields flags to the simple bool fields.
There should be no size increase of the snd_rawmidi_substream by this
change.
Reported-by: syzbot+576cc007eb9f2c968200@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20200214111316.26939-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/sound/rawmidi.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/include/sound/rawmidi.h
+++ b/include/sound/rawmidi.h
@@ -77,9 +77,9 @@ struct snd_rawmidi_substream {
struct list_head list; /* list of all substream for given stream */
int stream; /* direction */
int number; /* substream number */
- unsigned int opened: 1, /* open flag */
- append: 1, /* append flag (merge more streams) */
- active_sensing: 1; /* send active sensing when close */
+ bool opened; /* open flag */
+ bool append; /* append flag (merge more streams) */
+ bool active_sensing; /* send active sensing when close */
int use_count; /* use counter (for output) */
size_t bytes;
struct snd_rawmidi *rmidi;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 123/135] ALSA: seq: Avoid concurrent access to queue flags
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (121 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 122/135] ALSA: rawmidi: Avoid bit fields for state flags Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 124/135] ALSA: seq: Fix concurrent access to queue current tick/time Greg Kroah-Hartman
` (15 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, syzbot+65c6c92d04304d0a8efc,
syzbot+e60ddfa48717579799dd, Takashi Iwai
From: Takashi Iwai <tiwai@suse.de>
commit bb51e669fa49feb5904f452b2991b240ef31bc97 upstream.
The queue flags are represented in bit fields and the concurrent
access may result in unexpected results. Although the current code
should be mostly OK as it's only reading a field while writing other
fields as KCSAN reported, it's safer to cover both with a proper
spinlock protection.
This patch fixes the possible concurrent read by protecting with
q->owner_lock. Also the queue owner field is protected as well since
it's the field to be protected by the lock itself.
Reported-by: syzbot+65c6c92d04304d0a8efc@syzkaller.appspotmail.com
Reported-by: syzbot+e60ddfa48717579799dd@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20200214111316.26939-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/seq/seq_queue.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
--- a/sound/core/seq/seq_queue.c
+++ b/sound/core/seq/seq_queue.c
@@ -392,6 +392,7 @@ int snd_seq_queue_check_access(int queue
int snd_seq_queue_set_owner(int queueid, int client, int locked)
{
struct snd_seq_queue *q = queueptr(queueid);
+ unsigned long flags;
if (q == NULL)
return -EINVAL;
@@ -401,8 +402,10 @@ int snd_seq_queue_set_owner(int queueid,
return -EPERM;
}
+ spin_lock_irqsave(&q->owner_lock, flags);
q->locked = locked ? 1 : 0;
q->owner = client;
+ spin_unlock_irqrestore(&q->owner_lock, flags);
queue_access_unlock(q);
queuefree(q);
@@ -539,15 +542,17 @@ void snd_seq_queue_client_termination(in
unsigned long flags;
int i;
struct snd_seq_queue *q;
+ bool matched;
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
if ((q = queueptr(i)) == NULL)
continue;
spin_lock_irqsave(&q->owner_lock, flags);
- if (q->owner == client)
+ matched = (q->owner == client);
+ if (matched)
q->klocked = 1;
spin_unlock_irqrestore(&q->owner_lock, flags);
- if (q->owner == client) {
+ if (matched) {
if (q->timer->running)
snd_seq_timer_stop(q->timer);
snd_seq_timer_reset(q->timer);
@@ -739,6 +744,8 @@ void snd_seq_info_queues_read(struct snd
int i, bpm;
struct snd_seq_queue *q;
struct snd_seq_timer *tmr;
+ bool locked;
+ int owner;
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
if ((q = queueptr(i)) == NULL)
@@ -750,9 +757,14 @@ void snd_seq_info_queues_read(struct snd
else
bpm = 0;
+ spin_lock_irq(&q->owner_lock);
+ locked = q->locked;
+ owner = q->owner;
+ spin_unlock_irq(&q->owner_lock);
+
snd_iprintf(buffer, "queue %d: [%s]\n", q->queue, q->name);
- snd_iprintf(buffer, "owned by client : %d\n", q->owner);
- snd_iprintf(buffer, "lock status : %s\n", q->locked ? "Locked" : "Free");
+ snd_iprintf(buffer, "owned by client : %d\n", owner);
+ snd_iprintf(buffer, "lock status : %s\n", locked ? "Locked" : "Free");
snd_iprintf(buffer, "queued time events : %d\n", snd_seq_prioq_avail(q->timeq));
snd_iprintf(buffer, "queued tick events : %d\n", snd_seq_prioq_avail(q->tickq));
snd_iprintf(buffer, "timer state : %s\n", tmr->running ? "Running" : "Stopped");
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 124/135] ALSA: seq: Fix concurrent access to queue current tick/time
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (122 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 123/135] ALSA: seq: Avoid concurrent access to queue flags Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 125/135] netfilter: xt_hashlimit: limit the max size of hashtable Greg Kroah-Hartman
` (14 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, syzbot+fd5e0eaa1a32999173b2, Takashi Iwai
From: Takashi Iwai <tiwai@suse.de>
commit dc7497795e014d84699c3b8809ed6df35352dd74 upstream.
snd_seq_check_queue() passes the current tick and time of the given
queue as a pointer to snd_seq_prioq_cell_out(), but those might be
updated concurrently by the seq timer update.
Fix it by retrieving the current tick and time via the proper helper
functions at first, and pass those values to snd_seq_prioq_cell_out()
later in the loops.
snd_seq_timer_get_cur_time() takes a new argument and adjusts with the
current system time only when it's requested so; this update isn't
needed for snd_seq_check_queue(), as it's called either from the
interrupt handler or right after queuing.
Also, snd_seq_timer_get_cur_tick() is changed to read the value in the
spinlock for the concurrency, too.
Reported-by: syzbot+fd5e0eaa1a32999173b2@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20200214111316.26939-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/seq/seq_clientmgr.c | 4 ++--
sound/core/seq/seq_queue.c | 9 ++++++---
sound/core/seq/seq_timer.c | 13 ++++++++++---
sound/core/seq/seq_timer.h | 3 ++-
4 files changed, 20 insertions(+), 9 deletions(-)
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -580,7 +580,7 @@ static int update_timestamp_of_queue(str
event->queue = queue;
event->flags &= ~SNDRV_SEQ_TIME_STAMP_MASK;
if (real_time) {
- event->time.time = snd_seq_timer_get_cur_time(q->timer);
+ event->time.time = snd_seq_timer_get_cur_time(q->timer, true);
event->flags |= SNDRV_SEQ_TIME_STAMP_REAL;
} else {
event->time.tick = snd_seq_timer_get_cur_tick(q->timer);
@@ -1659,7 +1659,7 @@ static int snd_seq_ioctl_get_queue_statu
tmr = queue->timer;
status->events = queue->tickq->cells + queue->timeq->cells;
- status->time = snd_seq_timer_get_cur_time(tmr);
+ status->time = snd_seq_timer_get_cur_time(tmr, true);
status->tick = snd_seq_timer_get_cur_tick(tmr);
status->running = tmr->running;
--- a/sound/core/seq/seq_queue.c
+++ b/sound/core/seq/seq_queue.c
@@ -238,6 +238,8 @@ void snd_seq_check_queue(struct snd_seq_
{
unsigned long flags;
struct snd_seq_event_cell *cell;
+ snd_seq_tick_time_t cur_tick;
+ snd_seq_real_time_t cur_time;
if (q == NULL)
return;
@@ -254,17 +256,18 @@ void snd_seq_check_queue(struct snd_seq_
__again:
/* Process tick queue... */
+ cur_tick = snd_seq_timer_get_cur_tick(q->timer);
for (;;) {
- cell = snd_seq_prioq_cell_out(q->tickq,
- &q->timer->tick.cur_tick);
+ cell = snd_seq_prioq_cell_out(q->tickq, &cur_tick);
if (!cell)
break;
snd_seq_dispatch_event(cell, atomic, hop);
}
/* Process time queue... */
+ cur_time = snd_seq_timer_get_cur_time(q->timer, false);
for (;;) {
- cell = snd_seq_prioq_cell_out(q->timeq, &q->timer->cur_time);
+ cell = snd_seq_prioq_cell_out(q->timeq, &cur_time);
if (!cell)
break;
snd_seq_dispatch_event(cell, atomic, hop);
--- a/sound/core/seq/seq_timer.c
+++ b/sound/core/seq/seq_timer.c
@@ -422,14 +422,15 @@ int snd_seq_timer_continue(struct snd_se
}
/* return current 'real' time. use timeofday() to get better granularity. */
-snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr)
+snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr,
+ bool adjust_ktime)
{
snd_seq_real_time_t cur_time;
unsigned long flags;
spin_lock_irqsave(&tmr->lock, flags);
cur_time = tmr->cur_time;
- if (tmr->running) {
+ if (adjust_ktime && tmr->running) {
struct timespec64 tm;
ktime_get_ts64(&tm);
@@ -446,7 +447,13 @@ snd_seq_real_time_t snd_seq_timer_get_cu
high PPQ values) */
snd_seq_tick_time_t snd_seq_timer_get_cur_tick(struct snd_seq_timer *tmr)
{
- return tmr->tick.cur_tick;
+ snd_seq_tick_time_t cur_tick;
+ unsigned long flags;
+
+ spin_lock_irqsave(&tmr->lock, flags);
+ cur_tick = tmr->tick.cur_tick;
+ spin_unlock_irqrestore(&tmr->lock, flags);
+ return cur_tick;
}
--- a/sound/core/seq/seq_timer.h
+++ b/sound/core/seq/seq_timer.h
@@ -120,7 +120,8 @@ int snd_seq_timer_set_tempo_ppq(struct s
int snd_seq_timer_set_position_tick(struct snd_seq_timer *tmr, snd_seq_tick_time_t position);
int snd_seq_timer_set_position_time(struct snd_seq_timer *tmr, snd_seq_real_time_t position);
int snd_seq_timer_set_skew(struct snd_seq_timer *tmr, unsigned int skew, unsigned int base);
-snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr);
+snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr,
+ bool adjust_ktime);
snd_seq_tick_time_t snd_seq_timer_get_cur_tick(struct snd_seq_timer *tmr);
extern int seq_default_timer_class;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 125/135] netfilter: xt_hashlimit: limit the max size of hashtable
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (123 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 124/135] ALSA: seq: Fix concurrent access to queue current tick/time Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 126/135] rxrpc: Fix call RCU cleanup using non-bh-safe locks Greg Kroah-Hartman
` (13 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Cong Wang, Florian Westphal,
Pablo Neira Ayuso, syzbot+adf6c6c2be1c3a718121
From: Cong Wang <xiyou.wangcong@gmail.com>
commit 8d0015a7ab76b8b1e89a3e5f5710a6e5103f2dd5 upstream.
The user-specified hashtable size is unbound, this could
easily lead to an OOM or a hung task as we hold the global
mutex while allocating and initializing the new hashtable.
Add a max value to cap both cfg->size and cfg->max, as
suggested by Florian.
Reported-and-tested-by: syzbot+adf6c6c2be1c3a718121@syzkaller.appspotmail.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/xt_hashlimit.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -851,6 +851,8 @@ hashlimit_mt(const struct sk_buff *skb,
return hashlimit_mt_common(skb, par, hinfo, &info->cfg, 3);
}
+#define HASHLIMIT_MAX_SIZE 1048576
+
static int hashlimit_mt_check_common(const struct xt_mtchk_param *par,
struct xt_hashlimit_htable **hinfo,
struct hashlimit_cfg3 *cfg,
@@ -861,6 +863,14 @@ static int hashlimit_mt_check_common(con
if (cfg->gc_interval == 0 || cfg->expire == 0)
return -EINVAL;
+ if (cfg->size > HASHLIMIT_MAX_SIZE) {
+ cfg->size = HASHLIMIT_MAX_SIZE;
+ pr_info_ratelimited("size too large, truncated to %u\n", cfg->size);
+ }
+ if (cfg->max > HASHLIMIT_MAX_SIZE) {
+ cfg->max = HASHLIMIT_MAX_SIZE;
+ pr_info_ratelimited("max too large, truncated to %u\n", cfg->max);
+ }
if (par->family == NFPROTO_IPV4) {
if (cfg->srcmask > 32 || cfg->dstmask > 32)
return -EINVAL;
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 126/135] rxrpc: Fix call RCU cleanup using non-bh-safe locks
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (124 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 125/135] netfilter: xt_hashlimit: limit the max size of hashtable Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 127/135] io_uring: prevent sq_thread from spinning when it should stop Greg Kroah-Hartman
` (12 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, syzbot+d82f3ac8d87e7ccbb2c9,
syzbot+3f1fd6b8cbf8702d134e, David Howells, Hillf Danton,
David S. Miller
From: David Howells <dhowells@redhat.com>
commit 963485d436ccc2810177a7b08af22336ec2af67b upstream.
rxrpc_rcu_destroy_call(), which is called as an RCU callback to clean up a
put call, calls rxrpc_put_connection() which, deep in its bowels, takes a
number of spinlocks in a non-BH-safe way, including rxrpc_conn_id_lock and
local->client_conns_lock. RCU callbacks, however, are normally called from
softirq context, which can cause lockdep to notice the locking
inconsistency.
To get lockdep to detect this, it's necessary to have the connection
cleaned up on the put at the end of the last of its calls, though normally
the clean up is deferred. This can be induced, however, by starting a call
on an AF_RXRPC socket and then closing the socket without reading the
reply.
Fix this by having rxrpc_rcu_destroy_call() punt the destruction to a
workqueue if in softirq-mode and defer the destruction to process context.
Note that another way to fix this could be to add a bunch of bh-disable
annotations to the spinlocks concerned - and there might be more than just
those two - but that means spending more time with BHs disabled.
Note also that some of these places were covered by bh-disable spinlocks
belonging to the rxrpc_transport object, but these got removed without the
_bh annotation being retained on the next lock in.
Fixes: 999b69f89241 ("rxrpc: Kill the client connection bundle concept")
Reported-by: syzbot+d82f3ac8d87e7ccbb2c9@syzkaller.appspotmail.com
Reported-by: syzbot+3f1fd6b8cbf8702d134e@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Hillf Danton <hdanton@sina.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/rxrpc/call_object.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -562,11 +562,11 @@ void rxrpc_put_call(struct rxrpc_call *c
}
/*
- * Final call destruction under RCU.
+ * Final call destruction - but must be done in process context.
*/
-static void rxrpc_rcu_destroy_call(struct rcu_head *rcu)
+static void rxrpc_destroy_call(struct work_struct *work)
{
- struct rxrpc_call *call = container_of(rcu, struct rxrpc_call, rcu);
+ struct rxrpc_call *call = container_of(work, struct rxrpc_call, processor);
struct rxrpc_net *rxnet = call->rxnet;
rxrpc_put_connection(call->conn);
@@ -579,6 +579,22 @@ static void rxrpc_rcu_destroy_call(struc
}
/*
+ * Final call destruction under RCU.
+ */
+static void rxrpc_rcu_destroy_call(struct rcu_head *rcu)
+{
+ struct rxrpc_call *call = container_of(rcu, struct rxrpc_call, rcu);
+
+ if (in_softirq()) {
+ INIT_WORK(&call->processor, rxrpc_destroy_call);
+ if (!rxrpc_queue_work(&call->processor))
+ BUG();
+ } else {
+ rxrpc_destroy_call(&call->processor);
+ }
+}
+
+/*
* clean up a call
*/
void rxrpc_cleanup_call(struct rxrpc_call *call)
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 127/135] io_uring: prevent sq_thread from spinning when it should stop
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (125 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 126/135] rxrpc: Fix call RCU cleanup using non-bh-safe locks Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 128/135] ata: ahci: Add shutdown to freeze hardware resources of ahci Greg Kroah-Hartman
` (11 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Stefano Garzarella, Jens Axboe
From: Stefano Garzarella <sgarzare@redhat.com>
commit 7143b5ac5750f404ff3a594b34fdf3fc2f99f828 upstream.
This patch drops 'cur_mm' before calling cond_resched(), to prevent
the sq_thread from spinning even when the user process is finished.
Before this patch, if the user process ended without closing the
io_uring fd, the sq_thread continues to spin until the
'sq_thread_idle' timeout ends.
In the worst case where the 'sq_thread_idle' parameter is bigger than
INT_MAX, the sq_thread will spin forever.
Fixes: 6c271ce2f1d5 ("io_uring: add submission polling")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/io_uring.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2732,16 +2732,6 @@ static int io_sq_thread(void *data)
to_submit = io_sqring_entries(ctx);
if (!to_submit) {
/*
- * We're polling. If we're within the defined idle
- * period, then let us spin without work before going
- * to sleep.
- */
- if (inflight || !time_after(jiffies, timeout)) {
- cond_resched();
- continue;
- }
-
- /*
* Drop cur_mm before scheduling, we can't hold it for
* long periods (or over schedule()). Do this before
* adding ourselves to the waitqueue, as the unuse/drop
@@ -2753,6 +2743,16 @@ static int io_sq_thread(void *data)
cur_mm = NULL;
}
+ /*
+ * We're polling. If we're within the defined idle
+ * period, then let us spin without work before going
+ * to sleep.
+ */
+ if (inflight || !time_after(jiffies, timeout)) {
+ cond_resched();
+ continue;
+ }
+
prepare_to_wait(&ctx->sqo_wait, &wait,
TASK_INTERRUPTIBLE);
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 128/135] ata: ahci: Add shutdown to freeze hardware resources of ahci
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (126 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 127/135] io_uring: prevent sq_thread from spinning when it should stop Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 129/135] xen: Enable interrupts when calling _cond_resched() Greg Kroah-Hartman
` (10 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Prabhakar Kushwaha, Jens Axboe
From: Prabhakar Kushwaha <pkushwaha@marvell.com>
commit 10a663a1b15134a5a714aa515e11425a44d4fdf7 upstream.
device_shutdown() called from reboot or power_shutdown expect
all devices to be shutdown. Same is true for even ahci pci driver.
As no ahci shutdown function is implemented, the ata subsystem
always remains alive with DMA & interrupt support. File system
related calls should not be honored after device_shutdown().
So defining ahci pci driver shutdown to freeze hardware (mask
interrupt, stop DMA engine and free DMA resources).
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ata/ahci.c | 7 +++++++
drivers/ata/libata-core.c | 21 +++++++++++++++++++++
include/linux/libata.h | 1 +
3 files changed, 29 insertions(+)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -80,6 +80,7 @@ enum board_ids {
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static void ahci_remove_one(struct pci_dev *dev);
+static void ahci_shutdown_one(struct pci_dev *dev);
static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline);
static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
@@ -593,6 +594,7 @@ static struct pci_driver ahci_pci_driver
.id_table = ahci_pci_tbl,
.probe = ahci_init_one,
.remove = ahci_remove_one,
+ .shutdown = ahci_shutdown_one,
.driver = {
.pm = &ahci_pci_pm_ops,
},
@@ -1864,6 +1866,11 @@ static int ahci_init_one(struct pci_dev
return 0;
}
+static void ahci_shutdown_one(struct pci_dev *pdev)
+{
+ ata_pci_shutdown_one(pdev);
+}
+
static void ahci_remove_one(struct pci_dev *pdev)
{
pm_runtime_get_noresume(&pdev->dev);
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6762,6 +6762,26 @@ void ata_pci_remove_one(struct pci_dev *
ata_host_detach(host);
}
+void ata_pci_shutdown_one(struct pci_dev *pdev)
+{
+ struct ata_host *host = pci_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < host->n_ports; i++) {
+ struct ata_port *ap = host->ports[i];
+
+ ap->pflags |= ATA_PFLAG_FROZEN;
+
+ /* Disable port interrupts */
+ if (ap->ops->freeze)
+ ap->ops->freeze(ap);
+
+ /* Stop the port DMA engines */
+ if (ap->ops->port_stop)
+ ap->ops->port_stop(ap);
+ }
+}
+
/* move to PCI subsystem */
int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits)
{
@@ -7382,6 +7402,7 @@ EXPORT_SYMBOL_GPL(ata_timing_cycle2mode)
#ifdef CONFIG_PCI
EXPORT_SYMBOL_GPL(pci_test_config_bits);
+EXPORT_SYMBOL_GPL(ata_pci_shutdown_one);
EXPORT_SYMBOL_GPL(ata_pci_remove_one);
#ifdef CONFIG_PM
EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend);
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1220,6 +1220,7 @@ struct pci_bits {
};
extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
+extern void ata_pci_shutdown_one(struct pci_dev *pdev);
extern void ata_pci_remove_one(struct pci_dev *pdev);
#ifdef CONFIG_PM
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 129/135] xen: Enable interrupts when calling _cond_resched()
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (127 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 128/135] ata: ahci: Add shutdown to freeze hardware resources of ahci Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 130/135] net/mlx5e: Reset RQ doorbell counter before moving RQ state from RST to RDY Greg Kroah-Hartman
` (9 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Thomas Gleixner, Juergen Gross,
Boris Ostrovsky
From: Thomas Gleixner <tglx@linutronix.de>
commit 8645e56a4ad6dcbf504872db7f14a2f67db88ef2 upstream.
xen_maybe_preempt_hcall() is called from the exception entry point
xen_do_hypervisor_callback with interrupts disabled.
_cond_resched() evades the might_sleep() check in cond_resched() which
would have caught that and schedule_debug() unfortunately lacks a check
for irqs_disabled().
Enable interrupts around the call and use cond_resched() to catch future
issues.
Fixes: fdfd811ddde3 ("x86/xen: allow privcmd hypercalls to be preempted")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/878skypjrh.fsf@nanos.tec.linutronix.de
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/xen/preempt.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/xen/preempt.c
+++ b/drivers/xen/preempt.c
@@ -33,7 +33,9 @@ asmlinkage __visible void xen_maybe_pree
* cpu.
*/
__this_cpu_write(xen_in_preemptible_hcall, false);
- _cond_resched();
+ local_irq_enable();
+ cond_resched();
+ local_irq_disable();
__this_cpu_write(xen_in_preemptible_hcall, true);
}
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 130/135] net/mlx5e: Reset RQ doorbell counter before moving RQ state from RST to RDY
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (128 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 129/135] xen: Enable interrupts when calling _cond_resched() Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 131/135] net/mlx5: Fix sleep while atomic in mlx5_eswitch_get_vepa Greg Kroah-Hartman
` (8 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Aya Levin, Tariq Toukan, Saeed Mahameed
From: Aya Levin <ayal@mellanox.com>
commit 5ee090ed0da649b1febae2b7c285ac77d1e55a0c upstream.
Initialize RQ doorbell counters to zero prior to moving an RQ from RST
to RDY state. Per HW spec, when RQ is back to RDY state, the descriptor
ID on the completion is reset. The doorbell record must comply.
Fixes: 8276ea1353a4 ("net/mlx5e: Report and recover from CQE with error on RQ")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reported-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 8 ++++
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 3 +
drivers/net/ethernet/mellanox/mlx5/core/wq.c | 39 ++++++++++++++++------
drivers/net/ethernet/mellanox/mlx5/core/wq.h | 2 +
4 files changed, 43 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -179,6 +179,14 @@ mlx5e_tx_dma_unmap(struct device *pdev,
}
}
+static inline void mlx5e_rqwq_reset(struct mlx5e_rq *rq)
+{
+ if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
+ mlx5_wq_ll_reset(&rq->mpwqe.wq);
+ else
+ mlx5_wq_cyc_reset(&rq->wqe.wq);
+}
+
/* SW parser related functions */
struct mlx5e_swp_spec {
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -723,6 +723,9 @@ int mlx5e_modify_rq_state(struct mlx5e_r
if (!in)
return -ENOMEM;
+ if (curr_state == MLX5_RQC_STATE_RST && next_state == MLX5_RQC_STATE_RDY)
+ mlx5e_rqwq_reset(rq);
+
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(modify_rq_in, in, rq_state, curr_state);
--- a/drivers/net/ethernet/mellanox/mlx5/core/wq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/wq.c
@@ -96,6 +96,13 @@ err_db_free:
return err;
}
+void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq)
+{
+ wq->wqe_ctr = 0;
+ wq->cur_sz = 0;
+ mlx5_wq_cyc_update_db_record(wq);
+}
+
int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *qpc, struct mlx5_wq_qp *wq,
struct mlx5_wq_ctrl *wq_ctrl)
@@ -194,6 +201,19 @@ err_db_free:
return err;
}
+static void mlx5_wq_ll_init_list(struct mlx5_wq_ll *wq)
+{
+ struct mlx5_wqe_srq_next_seg *next_seg;
+ int i;
+
+ for (i = 0; i < wq->fbc.sz_m1; i++) {
+ next_seg = mlx5_wq_ll_get_wqe(wq, i);
+ next_seg->next_wqe_index = cpu_to_be16(i + 1);
+ }
+ next_seg = mlx5_wq_ll_get_wqe(wq, i);
+ wq->tail_next = &next_seg->next_wqe_index;
+}
+
int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *wqc, struct mlx5_wq_ll *wq,
struct mlx5_wq_ctrl *wq_ctrl)
@@ -201,9 +221,7 @@ int mlx5_wq_ll_create(struct mlx5_core_d
u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
- struct mlx5_wqe_srq_next_seg *next_seg;
int err;
- int i;
err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
if (err) {
@@ -222,13 +240,7 @@ int mlx5_wq_ll_create(struct mlx5_core_d
mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
- for (i = 0; i < fbc->sz_m1; i++) {
- next_seg = mlx5_wq_ll_get_wqe(wq, i);
- next_seg->next_wqe_index = cpu_to_be16(i + 1);
- }
- next_seg = mlx5_wq_ll_get_wqe(wq, i);
- wq->tail_next = &next_seg->next_wqe_index;
-
+ mlx5_wq_ll_init_list(wq);
wq_ctrl->mdev = mdev;
return 0;
@@ -239,6 +251,15 @@ err_db_free:
return err;
}
+void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq)
+{
+ wq->head = 0;
+ wq->wqe_ctr = 0;
+ wq->cur_sz = 0;
+ mlx5_wq_ll_init_list(wq);
+ mlx5_wq_ll_update_db_record(wq);
+}
+
void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
{
mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
--- a/drivers/net/ethernet/mellanox/mlx5/core/wq.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/wq.h
@@ -80,10 +80,12 @@ int mlx5_wq_cyc_create(struct mlx5_core_
void *wqc, struct mlx5_wq_cyc *wq,
struct mlx5_wq_ctrl *wq_ctrl);
u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq);
+void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq);
int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *qpc, struct mlx5_wq_qp *wq,
struct mlx5_wq_ctrl *wq_ctrl);
+void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq);
int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *cqc, struct mlx5_cqwq *wq,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 131/135] net/mlx5: Fix sleep while atomic in mlx5_eswitch_get_vepa
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (129 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 130/135] net/mlx5e: Reset RQ doorbell counter before moving RQ state from RST to RDY Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 132/135] net/mlx5e: Fix crash in recovery flow without devlink reporter Greg Kroah-Hartman
` (7 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Huy Nguyen, Mark Bloch, Saeed Mahameed
From: Huy Nguyen <huyn@mellanox.com>
commit 3d9c5e023a0dbf3e117bb416cfefd9405bf5af0c upstream.
rtnl_bridge_getlink is protected by rcu lock, so mlx5_eswitch_get_vepa
cannot take mutex lock. Two possible issues can happen:
1. User at the same time change vepa mode via RTM_SETLINK command.
2. User at the same time change the switchdev mode via devlink netlink
interface.
Case 1 cannot happen because rtnl executes one message in order.
Case 2 can happen but we do not expect user to change the switchdev mode
when changing vepa. Even if a user does it, so he will read a value
which is no longer valid.
Fixes: 8da202b24913 ("net/mlx5: E-Switch, Add support for VEPA in legacy mode.")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -2319,25 +2319,17 @@ out:
int mlx5_eswitch_get_vepa(struct mlx5_eswitch *esw, u8 *setting)
{
- int err = 0;
-
if (!esw)
return -EOPNOTSUPP;
if (!ESW_ALLOWED(esw))
return -EPERM;
- mutex_lock(&esw->state_lock);
- if (esw->mode != MLX5_ESWITCH_LEGACY) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (esw->mode != MLX5_ESWITCH_LEGACY)
+ return -EOPNOTSUPP;
*setting = esw->fdb_table.legacy.vepa_uplink_rule ? 1 : 0;
-
-out:
- mutex_unlock(&esw->state_lock);
- return err;
+ return 0;
}
int mlx5_eswitch_set_vport_trust(struct mlx5_eswitch *esw,
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 132/135] net/mlx5e: Fix crash in recovery flow without devlink reporter
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (130 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 131/135] net/mlx5: Fix sleep while atomic in mlx5_eswitch_get_vepa Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 133/135] s390/kaslr: Fix casts in get_random Greg Kroah-Hartman
` (6 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Aya Levin, Parav Pandit,
Tariq Toukan, Saeed Mahameed
From: Aya Levin <ayal@mellanox.com>
commit 1ad6c43c6a7b8627240c6cc19c69e31fedc596a7 upstream.
When health reporters are not supported, recovery function is invoked
directly, not via devlink health reporters.
In this direct flow, the recover function input parameter was passed
incorrectly and is causing a kernel oops. This patch is fixing the input
parameter.
Following call trace is observed on rx error health reporting.
Internal error: Oops: 96000007 [#1] PREEMPT SMP
Process kworker/u16:4 (pid: 4584, stack limit = 0x00000000c9e45703)
Call trace:
mlx5e_rx_reporter_err_rq_cqe_recover+0x30/0x164 [mlx5_core]
mlx5e_health_report+0x60/0x6c [mlx5_core]
mlx5e_reporter_rq_cqe_err+0x6c/0x90 [mlx5_core]
mlx5e_rq_err_cqe_work+0x20/0x2c [mlx5_core]
process_one_work+0x168/0x3d0
worker_thread+0x58/0x3d0
kthread+0x108/0x134
Fixes: c50de4af1d63 ("net/mlx5e: Generalize tx reporter's functionality")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en/health.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/health.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/health.c
@@ -200,7 +200,7 @@ int mlx5e_health_report(struct mlx5e_pri
netdev_err(priv->netdev, err_str);
if (!reporter)
- return err_ctx->recover(&err_ctx->ctx);
+ return err_ctx->recover(err_ctx->ctx);
return devlink_health_report(reporter, err_str, err_ctx);
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 133/135] s390/kaslr: Fix casts in get_random
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (131 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 132/135] net/mlx5e: Fix crash in recovery flow without devlink reporter Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 134/135] s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range Greg Kroah-Hartman
` (5 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Nathan Chancellor, Vasily Gorbik
From: Nathan Chancellor <natechancellor@gmail.com>
commit 788d671517b5c81efbed9310ccbadb8cca86a08e upstream.
Clang warns:
../arch/s390/boot/kaslr.c:78:25: warning: passing 'char *' to parameter
of type 'const u8 *' (aka 'const unsigned char *') converts between
pointers to integer
types with different sign [-Wpointer-sign]
(char *) entropy, (char *) entropy,
^~~~~~~~~~~~~~~~
../arch/s390/include/asm/cpacf.h:280:28: note: passing argument to
parameter 'src' here
u8 *dest, const u8 *src, long src_len)
^
2 warnings generated.
Fix the cast to match what else is done in this function.
Fixes: b2d24b97b2a9 ("s390/kernel: add support for kernel address space layout randomization (KASLR)")
Link: https://github.com/ClangBuiltLinux/linux/issues/862
Link: https://lkml.kernel.org/r/20200208141052.48476-1-natechancellor@gmail.com
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/boot/kaslr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/boot/kaslr.c
+++ b/arch/s390/boot/kaslr.c
@@ -75,7 +75,7 @@ static unsigned long get_random(unsigned
*(unsigned long *) prng.parm_block ^= seed;
for (i = 0; i < 16; i++) {
cpacf_kmc(CPACF_KMC_PRNG, prng.parm_block,
- (char *) entropy, (char *) entropy,
+ (u8 *) entropy, (u8 *) entropy,
sizeof(entropy));
memcpy(prng.parm_block, entropy, sizeof(entropy));
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 134/135] s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (132 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 133/135] s390/kaslr: Fix casts in get_random Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 13:37 ` [PATCH 5.4 135/135] bpf: Selftests build error in sockmap_basic.c Greg Kroah-Hartman
` (4 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Christian Borntraeger,
Nathan Chancellor, Vasily Gorbik
From: Nathan Chancellor <natechancellor@gmail.com>
commit 380324734956c64cd060e1db4304f3117ac15809 upstream.
Clang warns:
In file included from ../arch/s390/purgatory/purgatory.c:10:
In file included from ../include/linux/kexec.h:18:
In file included from ../include/linux/crash_core.h:6:
In file included from ../include/linux/elfcore.h:5:
In file included from ../include/linux/user.h:1:
In file included from ../arch/s390/include/asm/user.h:11:
../arch/s390/include/asm/page.h:45:6: warning: converting the result of
'<<' to a boolean always evaluates to false
[-Wtautological-constant-compare]
if (PAGE_DEFAULT_KEY)
^
../arch/s390/include/asm/page.h:23:44: note: expanded from macro
'PAGE_DEFAULT_KEY'
#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4)
^
1 warning generated.
Explicitly compare this against zero to silence the warning as it is
intended to be used in a boolean context.
Fixes: de3fa841e429 ("s390/mm: fix compile for PAGE_DEFAULT_KEY != 0")
Link: https://github.com/ClangBuiltLinux/linux/issues/860
Link: https://lkml.kernel.org/r/20200214064207.10381-1-natechancellor@gmail.com
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/include/asm/page.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -42,7 +42,7 @@ void __storage_key_init_range(unsigned l
static inline void storage_key_init_range(unsigned long start, unsigned long end)
{
- if (PAGE_DEFAULT_KEY)
+ if (PAGE_DEFAULT_KEY != 0)
__storage_key_init_range(start, end);
}
^ permalink raw reply [flat|nested] 141+ messages in thread* [PATCH 5.4 135/135] bpf: Selftests build error in sockmap_basic.c
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (133 preceding siblings ...)
2020-02-27 13:37 ` [PATCH 5.4 134/135] s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range Greg Kroah-Hartman
@ 2020-02-27 13:37 ` Greg Kroah-Hartman
2020-02-27 18:52 ` Jon Hunter
` (3 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-27 13:37 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, John Fastabend, Alexei Starovoitov,
Jakub Sitnicki
From: John Fastabend <john.fastabend@gmail.com>
commit f2e97dc126b712c0d21219ed0c42710006c1cf52 upstream.
Fix following build error. We could push a tcp.h header into one of the
include paths, but I think its easy enough to simply pull in the three
defines we need here. If we end up using more of tcp.h at some point
we can pull it in later.
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: In function ‘connected_socket_v4’:
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: error: ‘TCP_REPAIR_ON’ undeclared (first use in this function)
repair = TCP_REPAIR_ON;
^
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: note: each undeclared identifier is reported only once for each function it appears in
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:29:11: error: ‘TCP_REPAIR_OFF_NO_WP’ undeclared (first use in this function)
repair = TCP_REPAIR_OFF_NO_WP;
Then with fix,
$ ./test_progs -n 44
#44/1 sockmap create_update_free:OK
#44/2 sockhash create_update_free:OK
#44 sockmap_basic:OK
Fixes: 5d3919a953c3c ("selftests/bpf: Test freeing sockmap/sockhash with a socket in it")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/158131347731.21414.12120493483848386652.stgit@john-Precision-5820-Tower
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/bpf/prog_tests/sockmap_basic.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
@@ -3,6 +3,11 @@
#include "test_progs.h"
+#define TCP_REPAIR 19 /* TCP sock is under repair right now */
+
+#define TCP_REPAIR_ON 1
+#define TCP_REPAIR_OFF_NO_WP -1 /* Turn off without window probes */
+
static int connected_socket_v4(void)
{
struct sockaddr_in addr = {
^ permalink raw reply [flat|nested] 141+ messages in thread* Re: [PATCH 5.4 000/135] 5.4.23-stable review
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
@ 2020-02-27 18:52 ` Jon Hunter
2020-02-27 13:35 ` [PATCH 5.4 002/135] ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs Greg Kroah-Hartman
` (137 subsequent siblings)
138 siblings, 0 replies; 141+ messages in thread
From: Jon Hunter @ 2020-02-27 18:52 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel
Cc: torvalds, akpm, linux, shuah, patches, ben.hutchings,
lkft-triage, stable, linux-tegra
On 27/02/2020 13:35, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.4.23 release.
> There are 135 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 29 Feb 2020 13:21:24 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.23-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
All tests are passing for Tegra ...
Test results for stable-v5.4:
13 builds: 13 pass, 0 fail
22 boots: 22 pass, 0 fail
40 tests: 40 pass, 0 fail
Linux version: 5.4.23-rc1-g8550aa6c7855
Boards tested: tegra124-jetson-tk1, tegra186-p2771-0000,
tegra194-p2972-0000, tegra20-ventana,
tegra210-p2371-2180, tegra210-p3450-0000,
tegra30-cardhu-a04
Cheers
Jon
--
nvpublic
^ permalink raw reply [flat|nested] 141+ messages in thread* Re: [PATCH 5.4 000/135] 5.4.23-stable review
@ 2020-02-27 18:52 ` Jon Hunter
0 siblings, 0 replies; 141+ messages in thread
From: Jon Hunter @ 2020-02-27 18:52 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel
Cc: torvalds, akpm, linux, shuah, patches, ben.hutchings,
lkft-triage, stable, linux-tegra
On 27/02/2020 13:35, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.4.23 release.
> There are 135 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 29 Feb 2020 13:21:24 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.23-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
All tests are passing for Tegra ...
Test results for stable-v5.4:
13 builds: 13 pass, 0 fail
22 boots: 22 pass, 0 fail
40 tests: 40 pass, 0 fail
Linux version: 5.4.23-rc1-g8550aa6c7855
Boards tested: tegra124-jetson-tk1, tegra186-p2771-0000,
tegra194-p2972-0000, tegra20-ventana,
tegra210-p2371-2180, tegra210-p3450-0000,
tegra30-cardhu-a04
Cheers
Jon
--
nvpublic
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH 5.4 000/135] 5.4.23-stable review
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (135 preceding siblings ...)
2020-02-27 18:52 ` Jon Hunter
@ 2020-02-27 22:34 ` Guenter Roeck
2020-02-28 3:37 ` shuah
2020-02-28 3:42 ` Naresh Kamboju
138 siblings, 0 replies; 141+ messages in thread
From: Guenter Roeck @ 2020-02-27 22:34 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel
Cc: torvalds, akpm, shuah, patches, ben.hutchings, lkft-triage, stable
On 2/27/20 5:35 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.4.23 release.
> There are 135 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 29 Feb 2020 13:21:24 +0000.
> Anything received after that time might be too late.
>
Build results:
total: 158 pass: 158 fail: 0
Qemu test results:
total: 415 pass: 415 fail: 0
Guenter
^ permalink raw reply [flat|nested] 141+ messages in thread* Re: [PATCH 5.4 000/135] 5.4.23-stable review
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (136 preceding siblings ...)
2020-02-27 22:34 ` Guenter Roeck
@ 2020-02-28 3:37 ` shuah
2020-02-28 3:42 ` Naresh Kamboju
138 siblings, 0 replies; 141+ messages in thread
From: shuah @ 2020-02-28 3:37 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel
Cc: torvalds, akpm, linux, patches, ben.hutchings, lkft-triage,
stable, shuah
On 2/27/20 6:35 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.4.23 release.
> There are 135 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 29 Feb 2020 13:21:24 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.23-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
>
Compiled and booted on my test system. No dmesg regressions.
thanks,
-- Shuah
^ permalink raw reply [flat|nested] 141+ messages in thread* Re: [PATCH 5.4 000/135] 5.4.23-stable review
2020-02-27 13:35 [PATCH 5.4 000/135] 5.4.23-stable review Greg Kroah-Hartman
` (137 preceding siblings ...)
2020-02-28 3:37 ` shuah
@ 2020-02-28 3:42 ` Naresh Kamboju
138 siblings, 0 replies; 141+ messages in thread
From: Naresh Kamboju @ 2020-02-28 3:42 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: open list, Shuah Khan, patches, lkft-triage, Ben Hutchings,
linux- stable, Andrew Morton, Linus Torvalds, Guenter Roeck
On Thu, 27 Feb 2020 at 19:54, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 5.4.23 release.
> There are 135 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 29 Feb 2020 13:21:24 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.23-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.
Summary
------------------------------------------------------------------------
kernel: 5.4.23-rc1
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git branch: linux-5.4.y
git commit: 8550aa6c78553db799becfc53c7e7890602862d6
git describe: v5.4.22-136-g8550aa6c7855
Test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/build/v5.4.22-136-g8550aa6c7855
No regressions (compared to build v5.4.22)
No fixes (compared to build v5.4.22)
Ran 30904 total tests in the following environments and test suites.
Environments
--------------
- dragonboard-410c
- hi6220-hikey
- i386
- juno-r2
- nxp-ls2088
- qemu_arm
- qemu_arm64
- qemu_i386
- qemu_x86_64
- x15
- x86
Test Suites
-----------
* build
* install-android-platform-tools-r2600
* kselftest
* libgpiod
* libhugetlbfs
* linux-log-parser
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-cpuhotplug-tests
* ltp-cve-tests
* ltp-dio-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-hugetlb-tests
* ltp-io-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* perf
* spectre-meltdown-checker-test
* v4l2-compliance
* ltp-fs-tests
* network-basic-tests
* ltp-open-posix-tests
* kvm-unit-tests
* ltp-cap_bounds-64k-page_size-tests
* ltp-cap_bounds-kasan-tests
* ltp-commands-64k-page_size-tests
* ltp-commands-kasan-tests
* ltp-containers-64k-page_size-tests
* ltp-containers-kasan-tests
* ltp-cpuhotplug-64k-page_size-tests
* ltp-cpuhotplug-kasan-tests
* ltp-crypto-64k-page_size-tests
* ltp-crypto-kasan-tests
* ltp-crypto-tests
* ltp-cve-64k-page_size-tests
* ltp-cve-kasan-tests
* ltp-dio-64k-page_size-tests
* ltp-dio-kasan-tests
* ltp-fcntl-locktests-64k-page_size-tests
* ltp-fcntl-locktests-kasan-tests
* ltp-filecaps-64k-page_size-tests
* ltp-filecaps-kasan-tests
* ltp-fs-64k-page_size-tests
* ltp-fs-kasan-tests
* ltp-fs_bind-64k-page_size-tests
* ltp-fs_bind-kasan-tests
* ltp-fs_perms_simple-64k-page_size-tests
* ltp-fs_perms_simple-kasan-tests
* ltp-fsx-64k-page_size-tests
* ltp-fsx-kasan-tests
* ltp-hugetlb-64k-page_size-tests
* ltp-io-64k-page_size-tests
* ltp-io-kasan-tests
* ltp-ipc-64k-page_size-tests
* ltp-ipc-kasan-tests
* ltp-math-64k-page_size-tests
* ltp-math-kasan-tests
* ltp-nptl-64k-page_size-tests
* ltp-nptl-kasan-tests
* ltp-pty-64k-page_size-tests
* ltp-pty-kasan-tests
* ltp-sched-64k-page_size-tests
* ltp-sched-kasan-tests
* ltp-securebits-64k-page_size-tests
* ltp-securebits-kasan-tests
* ltp-syscalls-64k-page_size-tests
* ltp-syscalls-compat-tests
* ltp-syscalls-kasan-tests
* kselftest-vsyscall-mode-native
* kselftest-vsyscall-mode-none
* ssuite
--
Linaro LKFT
https://lkft.linaro.org
^ permalink raw reply [flat|nested] 141+ messages in thread