* [PATCH 3.10 01/52] rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irq
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 02/52] iscsi-target: Reject mutual authentication with reflected CHAP_C Greg Kroah-Hartman
` (50 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Boris BREZILLON, Bryan Evenson,
Andrew Victor, Nicolas Ferre, Jean-Christophe Plagniol-Villard,
Alessandro Zummo, Andrew Morton, Linus Torvalds
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boris BREZILLON <boris.brezillon@free-electrons.com>
commit 2fe121e1f5aa3bf31b418a9790db6c400e922291 upstream.
The rtc user must wait at least 1 sec between each time/calandar update
(see atmel's datasheet chapter "Updating Time/Calendar").
Use the 1Hz interrupt to update the at91_rtc_upd_rdy flag and wait for
the at91_rtc_wait_upd_rdy event if the rtc is not ready.
This patch fixes a deadlock in an uninterruptible wait when the RTC is
updated more than once every second. AFAICT the bug is here from the
beginning, but I think we should at least backport this fix to 3.10 and
the following longterm and stable releases.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reported-by: Bryan Evenson <bevenson@melinkcorp.com>
Tested-by: Bryan Evenson <bevenson@melinkcorp.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
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>
---
drivers/rtc/rtc-at91rm9200.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -49,6 +49,7 @@ struct at91_rtc_config {
static const struct at91_rtc_config *at91_rtc_config;
static DECLARE_COMPLETION(at91_rtc_updated);
+static DECLARE_COMPLETION(at91_rtc_upd_rdy);
static unsigned int at91_alarm_year = AT91_RTC_EPOCH;
static void __iomem *at91_rtc_regs;
static int irq;
@@ -162,6 +163,8 @@ static int at91_rtc_settime(struct devic
1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
+ wait_for_completion(&at91_rtc_upd_rdy);
+
/* Stop Time/Calendar from counting */
cr = at91_rtc_read(AT91_RTC_CR);
at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM);
@@ -184,7 +187,9 @@ static int at91_rtc_settime(struct devic
/* Restart Time/Calendar */
cr = at91_rtc_read(AT91_RTC_CR);
+ at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_SECEV);
at91_rtc_write(AT91_RTC_CR, cr & ~(AT91_RTC_UPDCAL | AT91_RTC_UPDTIM));
+ at91_rtc_write_ier(AT91_RTC_SECEV);
return 0;
}
@@ -291,8 +296,10 @@ static irqreturn_t at91_rtc_interrupt(in
if (rtsr) { /* this interrupt is shared! Is it ours? */
if (rtsr & AT91_RTC_ALARM)
events |= (RTC_AF | RTC_IRQF);
- if (rtsr & AT91_RTC_SECEV)
- events |= (RTC_UF | RTC_IRQF);
+ if (rtsr & AT91_RTC_SECEV) {
+ complete(&at91_rtc_upd_rdy);
+ at91_rtc_write_idr(AT91_RTC_SECEV);
+ }
if (rtsr & AT91_RTC_ACKUPD)
complete(&at91_rtc_updated);
@@ -415,6 +422,11 @@ static int __init at91_rtc_probe(struct
}
platform_set_drvdata(pdev, rtc);
+ /* enable SECEV interrupt in order to initialize at91_rtc_upd_rdy
+ * completion.
+ */
+ at91_rtc_write_ier(AT91_RTC_SECEV);
+
dev_info(&pdev->dev, "AT91 Real Time Clock driver.\n");
return 0;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 02/52] iscsi-target: Reject mutual authentication with reflected CHAP_C
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 01/52] rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irq Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 03/52] ima: introduce ima_kernel_read() Greg Kroah-Hartman
` (49 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Tejas Vaykole, Nicholas Bellinger
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Bellinger <nab@linux-iscsi.org>
commit 1d2b60a5545942b1376cb48c1d55843d71e3a08f upstream.
This patch adds an explicit check in chap_server_compute_md5() to ensure
the CHAP_C value received from the initiator during mutual authentication
does not match the original CHAP_C provided by the target.
This is in line with RFC-3720, section 8.2.1:
Originators MUST NOT reuse the CHAP challenge sent by the Responder
for the other direction of a bidirectional authentication.
Responders MUST check for this condition and close the iSCSI TCP
connection if it occurs.
Reported-by: Tejas Vaykole <tejas.vaykole@calsoftinc.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/target/iscsi/iscsi_target_auth.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/target/iscsi/iscsi_target_auth.c
+++ b/drivers/target/iscsi/iscsi_target_auth.c
@@ -316,6 +316,16 @@ static int chap_server_compute_md5(
goto out;
}
/*
+ * During mutual authentication, the CHAP_C generated by the
+ * initiator must not match the original CHAP_C generated by
+ * the target.
+ */
+ if (!memcmp(challenge_binhex, chap->challenge, CHAP_CHALLENGE_LENGTH)) {
+ pr_err("initiator CHAP_C matches target CHAP_C, failing"
+ " login attempt\n");
+ goto out;
+ }
+ /*
* Generate CHAP_N and CHAP_R for mutual authentication.
*/
tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 03/52] ima: introduce ima_kernel_read()
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 01/52] rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irq Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 02/52] iscsi-target: Reject mutual authentication with reflected CHAP_C Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 04/52] evm: prohibit userspace writing security.evm HMAC value Greg Kroah-Hartman
` (48 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Dmitry Kasatkin, Eric W. Biederman,
Mimi Zohar
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Kasatkin <d.kasatkin@samsung.com>
commit 0430e49b6e7c6b5e076be8fefdee089958c9adad upstream.
Commit 8aac62706 "move exit_task_namespaces() outside of exit_notify"
introduced the kernel opps since the kernel v3.10, which happens when
Apparmor and IMA-appraisal are enabled at the same time.
----------------------------------------------------------------------
[ 106.750167] BUG: unable to handle kernel NULL pointer dereference at
0000000000000018
[ 106.750221] IP: [<ffffffff811ec7da>] our_mnt+0x1a/0x30
[ 106.750241] PGD 0
[ 106.750254] Oops: 0000 [#1] SMP
[ 106.750272] Modules linked in: cuse parport_pc ppdev bnep rfcomm
bluetooth rpcsec_gss_krb5 nfsd auth_rpcgss nfs_acl nfs lockd sunrpc
fscache dm_crypt intel_rapl x86_pkg_temp_thermal intel_powerclamp
kvm_intel snd_hda_codec_hdmi kvm crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel aesni_intel aes_x86_64 glue_helper lrw gf128mul
ablk_helper cryptd snd_hda_codec_realtek dcdbas snd_hda_intel
snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_seq_midi
snd_seq_midi_event snd_rawmidi psmouse snd_seq microcode serio_raw
snd_timer snd_seq_device snd soundcore video lpc_ich coretemp mac_hid lp
parport mei_me mei nbd hid_generic e1000e usbhid ahci ptp hid libahci
pps_core
[ 106.750658] CPU: 6 PID: 1394 Comm: mysqld Not tainted 3.13.0-rc7-kds+ #15
[ 106.750673] Hardware name: Dell Inc. OptiPlex 9010/0M9KCM, BIOS A08
09/19/2012
[ 106.750689] task: ffff8800de804920 ti: ffff880400fca000 task.ti:
ffff880400fca000
[ 106.750704] RIP: 0010:[<ffffffff811ec7da>] [<ffffffff811ec7da>]
our_mnt+0x1a/0x30
[ 106.750725] RSP: 0018:ffff880400fcba60 EFLAGS: 00010286
[ 106.750738] RAX: 0000000000000000 RBX: 0000000000000100 RCX:
ffff8800d51523e7
[ 106.750764] RDX: ffffffffffffffea RSI: ffff880400fcba34 RDI:
ffff880402d20020
[ 106.750791] RBP: ffff880400fcbae0 R08: 0000000000000000 R09:
0000000000000001
[ 106.750817] R10: 0000000000000000 R11: 0000000000000001 R12:
ffff8800d5152300
[ 106.750844] R13: ffff8803eb8df510 R14: ffff880400fcbb28 R15:
ffff8800d51523e7
[ 106.750871] FS: 0000000000000000(0000) GS:ffff88040d200000(0000)
knlGS:0000000000000000
[ 106.750910] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 106.750935] CR2: 0000000000000018 CR3: 0000000001c0e000 CR4:
00000000001407e0
[ 106.750962] Stack:
[ 106.750981] ffffffff813434eb ffff880400fcbb20 ffff880400fcbb18
0000000000000000
[ 106.751037] ffff8800de804920 ffffffff8101b9b9 0001800000000000
0000000000000100
[ 106.751093] 0000010000000000 0000000000000002 000000000000000e
ffff8803eb8df500
[ 106.751149] Call Trace:
[ 106.751172] [<ffffffff813434eb>] ? aa_path_name+0x2ab/0x430
[ 106.751199] [<ffffffff8101b9b9>] ? sched_clock+0x9/0x10
[ 106.751225] [<ffffffff8134a68d>] aa_path_perm+0x7d/0x170
[ 106.751250] [<ffffffff8101b945>] ? native_sched_clock+0x15/0x80
[ 106.751276] [<ffffffff8134aa73>] aa_file_perm+0x33/0x40
[ 106.751301] [<ffffffff81348c5e>] common_file_perm+0x8e/0xb0
[ 106.751327] [<ffffffff81348d78>] apparmor_file_permission+0x18/0x20
[ 106.751355] [<ffffffff8130c853>] security_file_permission+0x23/0xa0
[ 106.751382] [<ffffffff811c77a2>] rw_verify_area+0x52/0xe0
[ 106.751407] [<ffffffff811c789d>] vfs_read+0x6d/0x170
[ 106.751432] [<ffffffff811cda31>] kernel_read+0x41/0x60
[ 106.751457] [<ffffffff8134fd45>] ima_calc_file_hash+0x225/0x280
[ 106.751483] [<ffffffff8134fb52>] ? ima_calc_file_hash+0x32/0x280
[ 106.751509] [<ffffffff8135022d>] ima_collect_measurement+0x9d/0x160
[ 106.751536] [<ffffffff810b552d>] ? trace_hardirqs_on+0xd/0x10
[ 106.751562] [<ffffffff8134f07c>] ? ima_file_free+0x6c/0xd0
[ 106.751587] [<ffffffff81352824>] ima_update_xattr+0x34/0x60
[ 106.751612] [<ffffffff8134f0d0>] ima_file_free+0xc0/0xd0
[ 106.751637] [<ffffffff811c9635>] __fput+0xd5/0x300
[ 106.751662] [<ffffffff811c98ae>] ____fput+0xe/0x10
[ 106.751687] [<ffffffff81086774>] task_work_run+0xc4/0xe0
[ 106.751712] [<ffffffff81066fad>] do_exit+0x2bd/0xa90
[ 106.751738] [<ffffffff8173c958>] ? retint_swapgs+0x13/0x1b
[ 106.751763] [<ffffffff8106780c>] do_group_exit+0x4c/0xc0
[ 106.751788] [<ffffffff81067894>] SyS_exit_group+0x14/0x20
[ 106.751814] [<ffffffff8174522d>] system_call_fastpath+0x1a/0x1f
[ 106.751839] Code: c3 0f 1f 44 00 00 55 48 89 e5 e8 22 fe ff ff 5d c3
0f 1f 44 00 00 55 65 48 8b 04 25 c0 c9 00 00 48 8b 80 28 06 00 00 48 89
e5 5d <48> 8b 40 18 48 39 87 c0 00 00 00 0f 94 c0 c3 0f 1f 80 00 00 00
[ 106.752185] RIP [<ffffffff811ec7da>] our_mnt+0x1a/0x30
[ 106.752214] RSP <ffff880400fcba60>
[ 106.752236] CR2: 0000000000000018
[ 106.752258] ---[ end trace 3c520748b4732721 ]---
----------------------------------------------------------------------
The reason for the oops is that IMA-appraisal uses "kernel_read()" when
file is closed. kernel_read() honors LSM security hook which calls
Apparmor handler, which uses current->nsproxy->mnt_ns. The 'guilty'
commit changed the order of cleanup code so that nsproxy->mnt_ns was
not already available for Apparmor.
Discussion about the issue with Al Viro and Eric W. Biederman suggested
that kernel_read() is too high-level for IMA. Another issue, except
security checking, that was identified is mandatory locking. kernel_read
honors it as well and it might prevent IMA from calculating necessary hash.
It was suggested to use simplified version of the function without security
and locking checks.
This patch introduces special version ima_kernel_read(), which skips security
and mandatory locking checking. It prevents the kernel oops to happen.
Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Suggested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
security/integrity/ima/ima_crypto.c | 32 +++++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)
--- a/security/integrity/ima/ima_crypto.c
+++ b/security/integrity/ima/ima_crypto.c
@@ -24,6 +24,36 @@
static struct crypto_shash *ima_shash_tfm;
+/**
+ * ima_kernel_read - read file content
+ *
+ * This is a function for reading file content instead of kernel_read().
+ * It does not perform locking checks to ensure it cannot be blocked.
+ * It does not perform security checks because it is irrelevant for IMA.
+ *
+ */
+static int ima_kernel_read(struct file *file, loff_t offset,
+ char *addr, unsigned long count)
+{
+ mm_segment_t old_fs;
+ char __user *buf = addr;
+ ssize_t ret;
+
+ if (!(file->f_mode & FMODE_READ))
+ return -EBADF;
+ if (!file->f_op->read && !file->f_op->aio_read)
+ return -EINVAL;
+
+ old_fs = get_fs();
+ set_fs(get_ds());
+ if (file->f_op->read)
+ ret = file->f_op->read(file, buf, count, &offset);
+ else
+ ret = do_sync_read(file, buf, count, &offset);
+ set_fs(old_fs);
+ return ret;
+}
+
int ima_init_crypto(void)
{
long rc;
@@ -70,7 +100,7 @@ int ima_calc_file_hash(struct file *file
while (offset < i_size) {
int rbuf_len;
- rbuf_len = kernel_read(file, offset, rbuf, PAGE_SIZE);
+ rbuf_len = ima_kernel_read(file, offset, rbuf, PAGE_SIZE);
if (rbuf_len < 0) {
rc = rbuf_len;
break;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 04/52] evm: prohibit userspace writing security.evm HMAC value
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (2 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 03/52] ima: introduce ima_kernel_read() Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 05/52] netlink: Rename netlink_capable netlink_allowed Greg Kroah-Hartman
` (47 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Mimi Zohar
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mimi Zohar <zohar@linux.vnet.ibm.com>
commit 2fb1c9a4f2dbc2f0bd2431c7fa64d0b5483864e4 upstream.
Calculating the 'security.evm' HMAC value requires access to the
EVM encrypted key. Only the kernel should have access to it. This
patch prevents userspace tools(eg. setfattr, cp --preserve=xattr)
from setting/modifying the 'security.evm' HMAC value directly.
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
security/integrity/evm/evm_main.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -275,12 +275,20 @@ static int evm_protect_xattr(struct dent
* @xattr_value: pointer to the new extended attribute value
* @xattr_value_len: pointer to the new extended attribute value length
*
- * Updating 'security.evm' requires CAP_SYS_ADMIN privileges and that
- * the current value is valid.
+ * Before allowing the 'security.evm' protected xattr to be updated,
+ * verify the existing value is valid. As only the kernel should have
+ * access to the EVM encrypted key needed to calculate the HMAC, prevent
+ * userspace from writing HMAC value. Writing 'security.evm' requires
+ * requires CAP_SYS_ADMIN privileges.
*/
int evm_inode_setxattr(struct dentry *dentry, const char *xattr_name,
const void *xattr_value, size_t xattr_value_len)
{
+ const struct evm_ima_xattr_data *xattr_data = xattr_value;
+
+ if ((strcmp(xattr_name, XATTR_NAME_EVM) == 0)
+ && (xattr_data->type == EVM_XATTR_HMAC))
+ return -EPERM;
return evm_protect_xattr(dentry, xattr_name, xattr_value,
xattr_value_len);
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 05/52] netlink: Rename netlink_capable netlink_allowed
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (3 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 04/52] evm: prohibit userspace writing security.evm HMAC value Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 06/52] net: Move the permission check in sock_diag_put_filterinfo to packet_diag_dump Greg Kroah-Hartman
` (46 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Eric W. Biederman, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
[ Upstream commit 5187cd055b6e81fc6526109456f8b20623148d5f ]
netlink_capable is a static internal function in af_netlink.c and we
have better uses for the name netlink_capable.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netlink/af_netlink.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1219,7 +1219,7 @@ retry:
return err;
}
-static inline int netlink_capable(const struct socket *sock, unsigned int flag)
+static inline int netlink_allowed(const struct socket *sock, unsigned int flag)
{
return (nl_table[sock->sk->sk_protocol].flags & flag) ||
ns_capable(sock_net(sock->sk)->user_ns, CAP_NET_ADMIN);
@@ -1287,7 +1287,7 @@ static int netlink_bind(struct socket *s
/* Only superuser is allowed to listen multicasts */
if (nladdr->nl_groups) {
- if (!netlink_capable(sock, NL_CFG_F_NONROOT_RECV))
+ if (!netlink_allowed(sock, NL_CFG_F_NONROOT_RECV))
return -EPERM;
err = netlink_realloc_groups(sk);
if (err)
@@ -1349,7 +1349,7 @@ static int netlink_connect(struct socket
return -EINVAL;
/* Only superuser is allowed to send multicasts */
- if (nladdr->nl_groups && !netlink_capable(sock, NL_CFG_F_NONROOT_SEND))
+ if (nladdr->nl_groups && !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND))
return -EPERM;
if (!nlk->portid)
@@ -1921,7 +1921,7 @@ static int netlink_setsockopt(struct soc
break;
case NETLINK_ADD_MEMBERSHIP:
case NETLINK_DROP_MEMBERSHIP: {
- if (!netlink_capable(sock, NL_CFG_F_NONROOT_RECV))
+ if (!netlink_allowed(sock, NL_CFG_F_NONROOT_RECV))
return -EPERM;
err = netlink_realloc_groups(sk);
if (err)
@@ -2072,7 +2072,7 @@ static int netlink_sendmsg(struct kiocb
dst_group = ffs(addr->nl_groups);
err = -EPERM;
if ((dst_group || dst_portid) &&
- !netlink_capable(sock, NL_CFG_F_NONROOT_SEND))
+ !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND))
goto out;
} else {
dst_portid = nlk->dst_portid;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 06/52] net: Move the permission check in sock_diag_put_filterinfo to packet_diag_dump
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (4 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 05/52] netlink: Rename netlink_capable netlink_allowed Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 07/52] net: Add variants of capable for use on on sockets Greg Kroah-Hartman
` (45 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Andy Lutomirski, Eric W. Biederman,
David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
[ Upstream commit a53b72c83a4216f2eb883ed45a0cbce014b8e62d ]
The permission check in sock_diag_put_filterinfo is wrong, and it is so removed
from it's sources it is not clear why it is wrong. Move the computation
into packet_diag_dump and pass a bool of the result into sock_diag_filterinfo.
This does not yet correct the capability check but instead simply moves it to make
it clear what is going on.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/sock_diag.h | 2 +-
net/core/sock_diag.c | 4 ++--
net/packet/diag.c | 7 ++++++-
3 files changed, 9 insertions(+), 4 deletions(-)
--- a/include/linux/sock_diag.h
+++ b/include/linux/sock_diag.h
@@ -23,7 +23,7 @@ int sock_diag_check_cookie(void *sk, __u
void sock_diag_save_cookie(void *sk, __u32 *cookie);
int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr);
-int sock_diag_put_filterinfo(struct sock *sk,
+int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
struct sk_buff *skb, int attrtype);
#endif
--- a/net/core/sock_diag.c
+++ b/net/core/sock_diag.c
@@ -49,7 +49,7 @@ int sock_diag_put_meminfo(struct sock *s
}
EXPORT_SYMBOL_GPL(sock_diag_put_meminfo);
-int sock_diag_put_filterinfo(struct sock *sk,
+int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
struct sk_buff *skb, int attrtype)
{
struct nlattr *attr;
@@ -57,7 +57,7 @@ int sock_diag_put_filterinfo(struct sock
unsigned int len;
int err = 0;
- if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {
+ if (!may_report_filterinfo) {
nla_reserve(skb, attrtype, 0);
return 0;
}
--- a/net/packet/diag.c
+++ b/net/packet/diag.c
@@ -127,6 +127,7 @@ static int pdiag_put_fanout(struct packe
static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
struct packet_diag_req *req,
+ bool may_report_filterinfo,
struct user_namespace *user_ns,
u32 portid, u32 seq, u32 flags, int sk_ino)
{
@@ -171,7 +172,8 @@ static int sk_diag_fill(struct sock *sk,
goto out_nlmsg_trim;
if ((req->pdiag_show & PACKET_SHOW_FILTER) &&
- sock_diag_put_filterinfo(sk, skb, PACKET_DIAG_FILTER))
+ sock_diag_put_filterinfo(may_report_filterinfo, sk, skb,
+ PACKET_DIAG_FILTER))
goto out_nlmsg_trim;
return nlmsg_end(skb, nlh);
@@ -187,9 +189,11 @@ static int packet_diag_dump(struct sk_bu
struct packet_diag_req *req;
struct net *net;
struct sock *sk;
+ bool may_report_filterinfo;
net = sock_net(skb->sk);
req = nlmsg_data(cb->nlh);
+ may_report_filterinfo = ns_capable(net->user_ns, CAP_NET_ADMIN);
mutex_lock(&net->packet.sklist_lock);
sk_for_each(sk, &net->packet.sklist) {
@@ -199,6 +203,7 @@ static int packet_diag_dump(struct sk_bu
goto next;
if (sk_diag_fill(sk, skb, req,
+ may_report_filterinfo,
sk_user_ns(NETLINK_CB(cb->skb).sk),
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 07/52] net: Add variants of capable for use on on sockets
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (5 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 06/52] net: Move the permission check in sock_diag_put_filterinfo to packet_diag_dump Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 08/52] net: Add variants of capable for use on netlink messages Greg Kroah-Hartman
` (44 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Eric W. Biederman, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
[ Upstream commit a3b299da869d6e78cf42ae0b1b41797bcb8c5e4b ]
sk_net_capable - The common case, operations that are safe in a network namespace.
sk_capable - Operations that are not known to be safe in a network namespace
sk_ns_capable - The general case for special cases.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/sock.h | 5 +++++
net/core/sock.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2248,6 +2248,11 @@ extern void sock_enable_timestamp(struct
extern int sock_get_timestamp(struct sock *, struct timeval __user *);
extern int sock_get_timestampns(struct sock *, struct timespec __user *);
+bool sk_ns_capable(const struct sock *sk,
+ struct user_namespace *user_ns, int cap);
+bool sk_capable(const struct sock *sk, int cap);
+bool sk_net_capable(const struct sock *sk, int cap);
+
/*
* Enable debug/info messages
*/
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -142,6 +142,55 @@
static DEFINE_MUTEX(proto_list_mutex);
static LIST_HEAD(proto_list);
+/**
+ * sk_ns_capable - General socket capability test
+ * @sk: Socket to use a capability on or through
+ * @user_ns: The user namespace of the capability to use
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket had when the socket was
+ * created and the current process has the capability @cap in the user
+ * namespace @user_ns.
+ */
+bool sk_ns_capable(const struct sock *sk,
+ struct user_namespace *user_ns, int cap)
+{
+ return file_ns_capable(sk->sk_socket->file, user_ns, cap) &&
+ ns_capable(user_ns, cap);
+}
+EXPORT_SYMBOL(sk_ns_capable);
+
+/**
+ * sk_capable - Socket global capability test
+ * @sk: Socket to use a capability on or through
+ * @cap: The global capbility to use
+ *
+ * Test to see if the opener of the socket had when the socket was
+ * created and the current process has the capability @cap in all user
+ * namespaces.
+ */
+bool sk_capable(const struct sock *sk, int cap)
+{
+ return sk_ns_capable(sk, &init_user_ns, cap);
+}
+EXPORT_SYMBOL(sk_capable);
+
+/**
+ * sk_net_capable - Network namespace socket capability test
+ * @sk: Socket to use a capability on or through
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket had when the socke was created
+ * and the current process has the capability @cap over the network namespace
+ * the socket is a member of.
+ */
+bool sk_net_capable(const struct sock *sk, int cap)
+{
+ return sk_ns_capable(sk, sock_net(sk)->user_ns, cap);
+}
+EXPORT_SYMBOL(sk_net_capable);
+
+
#ifdef CONFIG_MEMCG_KMEM
int mem_cgroup_sockets_init(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
{
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 08/52] net: Add variants of capable for use on netlink messages
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (6 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 07/52] net: Add variants of capable for use on on sockets Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 09/52] net: Use netlink_ns_capable to verify the permisions of " Greg Kroah-Hartman
` (43 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Eric W. Biederman, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
[ Upstream commit aa4cf9452f469f16cea8c96283b641b4576d4a7b ]
netlink_net_capable - The common case use, for operations that are safe on a network namespace
netlink_capable - For operations that are only known to be safe for the global root
netlink_ns_capable - The general case of capable used to handle special cases
__netlink_ns_capable - Same as netlink_ns_capable except taking a netlink_skb_parms instead of
the skbuff of a netlink message.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/netlink.h | 7 +++++
net/netlink/af_netlink.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 72 insertions(+)
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -144,4 +144,11 @@ static inline int netlink_dump_start(str
return __netlink_dump_start(ssk, skb, nlh, control);
}
+bool __netlink_ns_capable(const struct netlink_skb_parms *nsp,
+ struct user_namespace *ns, int cap);
+bool netlink_ns_capable(const struct sk_buff *skb,
+ struct user_namespace *ns, int cap);
+bool netlink_capable(const struct sk_buff *skb, int cap);
+bool netlink_net_capable(const struct sk_buff *skb, int cap);
+
#endif /* __LINUX_NETLINK_H */
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1219,6 +1219,71 @@ retry:
return err;
}
+/**
+ * __netlink_ns_capable - General netlink message capability test
+ * @nsp: NETLINK_CB of the socket buffer holding a netlink command from userspace.
+ * @user_ns: The user namespace of the capability to use
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket we received the message
+ * from had when the netlink socket was created and the sender of the
+ * message has has the capability @cap in the user namespace @user_ns.
+ */
+bool __netlink_ns_capable(const struct netlink_skb_parms *nsp,
+ struct user_namespace *user_ns, int cap)
+{
+ return sk_ns_capable(nsp->sk, user_ns, cap);
+}
+EXPORT_SYMBOL(__netlink_ns_capable);
+
+/**
+ * netlink_ns_capable - General netlink message capability test
+ * @skb: socket buffer holding a netlink command from userspace
+ * @user_ns: The user namespace of the capability to use
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket we received the message
+ * from had when the netlink socket was created and the sender of the
+ * message has has the capability @cap in the user namespace @user_ns.
+ */
+bool netlink_ns_capable(const struct sk_buff *skb,
+ struct user_namespace *user_ns, int cap)
+{
+ return __netlink_ns_capable(&NETLINK_CB(skb), user_ns, cap);
+}
+EXPORT_SYMBOL(netlink_ns_capable);
+
+/**
+ * netlink_capable - Netlink global message capability test
+ * @skb: socket buffer holding a netlink command from userspace
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket we received the message
+ * from had when the netlink socket was created and the sender of the
+ * message has has the capability @cap in all user namespaces.
+ */
+bool netlink_capable(const struct sk_buff *skb, int cap)
+{
+ return netlink_ns_capable(skb, &init_user_ns, cap);
+}
+EXPORT_SYMBOL(netlink_capable);
+
+/**
+ * netlink_net_capable - Netlink network namespace message capability test
+ * @skb: socket buffer holding a netlink command from userspace
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket we received the message
+ * from had when the netlink socket was created and the sender of the
+ * message has has the capability @cap over the network namespace of
+ * the socket we received the message from.
+ */
+bool netlink_net_capable(const struct sk_buff *skb, int cap)
+{
+ return netlink_ns_capable(skb, sock_net(skb->sk)->user_ns, cap);
+}
+EXPORT_SYMBOL(netlink_net_capable);
+
static inline int netlink_allowed(const struct socket *sock, unsigned int flag)
{
return (nl_table[sock->sk->sk_protocol].flags & flag) ||
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 09/52] net: Use netlink_ns_capable to verify the permisions of netlink messages
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (7 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 08/52] net: Add variants of capable for use on netlink messages Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 10/52] netlink: Only check file credentials for implicit destinations Greg Kroah-Hartman
` (42 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Andy Lutomirski, Eric W. Biederman,
David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
[ Upstream commit 90f62cf30a78721641e08737bda787552428061e ]
It is possible by passing a netlink socket to a more privileged
executable and then to fool that executable into writing to the socket
data that happens to be valid netlink message to do something that
privileged executable did not intend to do.
To keep this from happening replace bare capable and ns_capable calls
with netlink_capable, netlink_net_calls and netlink_ns_capable calls.
Which act the same as the previous calls except they verify that the
opener of the socket had the desired permissions as well.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
crypto/crypto_user.c | 2 +-
drivers/connector/cn_proc.c | 2 +-
drivers/scsi/scsi_netlink.c | 2 +-
kernel/audit.c | 4 ++--
net/can/gw.c | 4 ++--
net/core/rtnetlink.c | 20 +++++++++++---------
net/dcb/dcbnl.c | 2 +-
net/decnet/dn_dev.c | 4 ++--
net/decnet/dn_fib.c | 4 ++--
net/decnet/netfilter/dn_rtmsg.c | 2 +-
net/netfilter/nfnetlink.c | 2 +-
net/netlink/genetlink.c | 2 +-
net/packet/diag.c | 2 +-
net/phonet/pn_netlink.c | 8 ++++----
net/sched/act_api.c | 2 +-
net/sched/cls_api.c | 2 +-
net/sched/sch_api.c | 6 +++---
net/tipc/netlink.c | 2 +-
net/xfrm/xfrm_user.c | 2 +-
19 files changed, 38 insertions(+), 36 deletions(-)
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -466,7 +466,7 @@ static int crypto_user_rcv_msg(struct sk
type -= CRYPTO_MSG_BASE;
link = &crypto_dispatch[type];
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if ((type == (CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE) &&
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -369,7 +369,7 @@ static void cn_proc_mcast_ctl(struct cn_
return;
/* Can only change if privileged. */
- if (!capable(CAP_NET_ADMIN)) {
+ if (!__netlink_ns_capable(nsp, &init_user_ns, CAP_NET_ADMIN)) {
err = EPERM;
goto out;
}
--- a/drivers/scsi/scsi_netlink.c
+++ b/drivers/scsi/scsi_netlink.c
@@ -77,7 +77,7 @@ scsi_nl_rcv_msg(struct sk_buff *skb)
goto next_msg;
}
- if (!capable(CAP_SYS_ADMIN)) {
+ if (!netlink_capable(skb, CAP_SYS_ADMIN)) {
err = -EPERM;
goto next_msg;
}
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -593,13 +593,13 @@ static int audit_netlink_ok(struct sk_bu
case AUDIT_TTY_SET:
case AUDIT_TRIM:
case AUDIT_MAKE_EQUIV:
- if (!capable(CAP_AUDIT_CONTROL))
+ if (!netlink_capable(skb, CAP_AUDIT_CONTROL))
err = -EPERM;
break;
case AUDIT_USER:
case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2:
- if (!capable(CAP_AUDIT_WRITE))
+ if (!netlink_capable(skb, CAP_AUDIT_WRITE))
err = -EPERM;
break;
default: /* bad msg */
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -784,7 +784,7 @@ static int cgw_create_job(struct sk_buff
struct cgw_job *gwj;
int err = 0;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (nlmsg_len(nlh) < sizeof(*r))
@@ -876,7 +876,7 @@ static int cgw_remove_job(struct sk_buff
struct can_can_gw ccgw;
int err = 0;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (nlmsg_len(nlh) < sizeof(*r))
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1294,7 +1294,8 @@ static int do_set_master(struct net_devi
return 0;
}
-static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
+static int do_setlink(const struct sk_buff *skb,
+ struct net_device *dev, struct ifinfomsg *ifm,
struct nlattr **tb, char *ifname, int modified)
{
const struct net_device_ops *ops = dev->netdev_ops;
@@ -1306,7 +1307,7 @@ static int do_setlink(struct net_device
err = PTR_ERR(net);
goto errout;
}
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) {
+ if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
err = -EPERM;
goto errout;
}
@@ -1560,7 +1561,7 @@ static int rtnl_setlink(struct sk_buff *
if (err < 0)
goto errout;
- err = do_setlink(dev, ifm, tb, ifname, 0);
+ err = do_setlink(skb, dev, ifm, tb, ifname, 0);
errout:
return err;
}
@@ -1678,7 +1679,8 @@ err:
}
EXPORT_SYMBOL(rtnl_create_link);
-static int rtnl_group_changelink(struct net *net, int group,
+static int rtnl_group_changelink(const struct sk_buff *skb,
+ struct net *net, int group,
struct ifinfomsg *ifm,
struct nlattr **tb)
{
@@ -1687,7 +1689,7 @@ static int rtnl_group_changelink(struct
for_each_netdev(net, dev) {
if (dev->group == group) {
- err = do_setlink(dev, ifm, tb, NULL, 0);
+ err = do_setlink(skb, dev, ifm, tb, NULL, 0);
if (err < 0)
return err;
}
@@ -1789,12 +1791,12 @@ replay:
modified = 1;
}
- return do_setlink(dev, ifm, tb, ifname, modified);
+ return do_setlink(skb, dev, ifm, tb, ifname, modified);
}
if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
- return rtnl_group_changelink(net,
+ return rtnl_group_changelink(skb, net,
nla_get_u32(tb[IFLA_GROUP]),
ifm, tb);
return -ENODEV;
@@ -2179,7 +2181,7 @@ static int rtnl_fdb_del(struct sk_buff *
int err = -EINVAL;
__u8 *addr;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
@@ -2635,7 +2637,7 @@ static int rtnetlink_rcv_msg(struct sk_b
sz_idx = type>>2;
kind = type&3;
- if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN))
+ if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -1670,7 +1670,7 @@ static int dcb_doit(struct sk_buff *skb,
struct nlmsghdr *reply_nlh = NULL;
const struct reply_func *fn;
- if ((nlh->nlmsg_type == RTM_SETDCB) && !capable(CAP_NET_ADMIN))
+ if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -573,7 +573,7 @@ static int dn_nl_deladdr(struct sk_buff
struct dn_ifaddr __rcu **ifap;
int err = -EINVAL;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (!net_eq(net, &init_net))
@@ -617,7 +617,7 @@ static int dn_nl_newaddr(struct sk_buff
struct dn_ifaddr *ifa;
int err;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (!net_eq(net, &init_net))
--- a/net/decnet/dn_fib.c
+++ b/net/decnet/dn_fib.c
@@ -505,7 +505,7 @@ static int dn_fib_rtm_delroute(struct sk
struct nlattr *attrs[RTA_MAX+1];
int err;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (!net_eq(net, &init_net))
@@ -530,7 +530,7 @@ static int dn_fib_rtm_newroute(struct sk
struct nlattr *attrs[RTA_MAX+1];
int err;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (!net_eq(net, &init_net))
--- a/net/decnet/netfilter/dn_rtmsg.c
+++ b/net/decnet/netfilter/dn_rtmsg.c
@@ -107,7 +107,7 @@ static inline void dnrmg_receive_user_sk
if (nlh->nlmsg_len < sizeof(*nlh) || skb->len < nlh->nlmsg_len)
return;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
RCV_SKB_FAIL(-EPERM);
/* Eventually we might send routing messages too */
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -147,7 +147,7 @@ static int nfnetlink_rcv_msg(struct sk_b
const struct nfnetlink_subsystem *ss;
int type, err;
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+ if (!netlink_net_capable(skb, CAP_NET_ADMIN))
return -EPERM;
/* All the messages must at least contain nfgenmsg */
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -592,7 +592,7 @@ static int genl_family_rcv_msg(struct ge
return -EOPNOTSUPP;
if ((ops->flags & GENL_ADMIN_PERM) &&
- !capable(CAP_NET_ADMIN))
+ !netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (nlh->nlmsg_flags & NLM_F_DUMP) {
--- a/net/packet/diag.c
+++ b/net/packet/diag.c
@@ -193,7 +193,7 @@ static int packet_diag_dump(struct sk_bu
net = sock_net(skb->sk);
req = nlmsg_data(cb->nlh);
- may_report_filterinfo = ns_capable(net->user_ns, CAP_NET_ADMIN);
+ may_report_filterinfo = netlink_net_capable(cb->skb, CAP_NET_ADMIN);
mutex_lock(&net->packet.sklist_lock);
sk_for_each(sk, &net->packet.sklist) {
--- a/net/phonet/pn_netlink.c
+++ b/net/phonet/pn_netlink.c
@@ -70,10 +70,10 @@ static int addr_doit(struct sk_buff *skb
int err;
u8 pnaddr;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
- if (!capable(CAP_SYS_ADMIN))
+ if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
ASSERT_RTNL();
@@ -233,10 +233,10 @@ static int route_doit(struct sk_buff *sk
int err;
u8 dst;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
- if (!capable(CAP_SYS_ADMIN))
+ if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
ASSERT_RTNL();
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -989,7 +989,7 @@ static int tc_ctl_action(struct sk_buff
u32 portid = skb ? NETLINK_CB(skb).portid : 0;
int ret = 0, ovr = 0;
- if ((n->nlmsg_type != RTM_GETACTION) && !capable(CAP_NET_ADMIN))
+ if ((n->nlmsg_type != RTM_GETACTION) && !netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL);
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -138,7 +138,7 @@ static int tc_ctl_tfilter(struct sk_buff
int err;
int tp_created = 0;
- if ((n->nlmsg_type != RTM_GETTFILTER) && !capable(CAP_NET_ADMIN))
+ if ((n->nlmsg_type != RTM_GETTFILTER) && !netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
replay:
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1024,7 +1024,7 @@ static int tc_get_qdisc(struct sk_buff *
struct Qdisc *p = NULL;
int err;
- if ((n->nlmsg_type != RTM_GETQDISC) && !capable(CAP_NET_ADMIN))
+ if ((n->nlmsg_type != RTM_GETQDISC) && !netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
@@ -1091,7 +1091,7 @@ static int tc_modify_qdisc(struct sk_buf
struct Qdisc *q, *p;
int err;
- if (!capable(CAP_NET_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
replay:
@@ -1431,7 +1431,7 @@ static int tc_ctl_tclass(struct sk_buff
u32 qid;
int err;
- if ((n->nlmsg_type != RTM_GETTCLASS) && !capable(CAP_NET_ADMIN))
+ if ((n->nlmsg_type != RTM_GETTCLASS) && !netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -47,7 +47,7 @@ static int handle_cmd(struct sk_buff *sk
int hdr_space = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
u16 cmd;
- if ((req_userhdr->cmd & 0xC000) && (!capable(CAP_NET_ADMIN)))
+ if ((req_userhdr->cmd & 0xC000) && (!netlink_capable(skb, CAP_NET_ADMIN)))
cmd = TIPC_CMD_NOT_NET_ADMIN;
else
cmd = req_userhdr->cmd;
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2362,7 +2362,7 @@ static int xfrm_user_rcv_msg(struct sk_b
link = &xfrm_dispatch[type];
/* All operations require privileges, even GET */
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+ if (!netlink_net_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if ((type == (XFRM_MSG_GETSA - XFRM_MSG_BASE) ||
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 10/52] netlink: Only check file credentials for implicit destinations
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (8 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 09/52] net: Use netlink_ns_capable to verify the permisions of " Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 11/52] netlink: rate-limit leftover bytes warning and print process name Greg Kroah-Hartman
` (41 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Eric W. Biederman, Andy Lutomirski,
David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
[ Upstream commit 2d7a85f4b06e9c27ff629f07a524c48074f07f81 ]
It was possible to get a setuid root or setcap executable to write to
it's stdout or stderr (which has been set made a netlink socket) and
inadvertently reconfigure the networking stack.
To prevent this we check that both the creator of the socket and
the currentl applications has permission to reconfigure the network
stack.
Unfortunately this breaks Zebra which always uses sendto/sendmsg
and creates it's socket without any privileges.
To keep Zebra working don't bother checking if the creator of the
socket has privilege when a destination address is specified. Instead
rely exclusively on the privileges of the sender of the socket.
Note from Andy: This is exactly Eric's code except for some comment
clarifications and formatting fixes. Neither I nor, I think, anyone
else is thrilled with this approach, but I'm hesitant to wait on a
better fix since 3.15 is almost here.
Note to stable maintainers: This is a mess. An earlier series of
patches in 3.15 fix a rather serious security issue (CVE-2014-0181),
but they did so in a way that breaks Zebra. The offending series
includes:
commit aa4cf9452f469f16cea8c96283b641b4576d4a7b
Author: Eric W. Biederman <ebiederm@xmission.com>
Date: Wed Apr 23 14:28:03 2014 -0700
net: Add variants of capable for use on netlink messages
If a given kernel version is missing that series of fixes, it's
probably worth backporting it and this patch. if that series is
present, then this fix is critical if you care about Zebra.
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/netlink.h | 7 ++++---
net/netlink/af_netlink.c | 7 ++++++-
2 files changed, 10 insertions(+), 4 deletions(-)
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -16,9 +16,10 @@ static inline struct nlmsghdr *nlmsg_hdr
}
enum netlink_skb_flags {
- NETLINK_SKB_MMAPED = 0x1, /* Packet data is mmaped */
- NETLINK_SKB_TX = 0x2, /* Packet was sent by userspace */
- NETLINK_SKB_DELIVERED = 0x4, /* Packet was delivered */
+ NETLINK_SKB_MMAPED = 0x1, /* Packet data is mmaped */
+ NETLINK_SKB_TX = 0x2, /* Packet was sent by userspace */
+ NETLINK_SKB_DELIVERED = 0x4, /* Packet was delivered */
+ NETLINK_SKB_DST = 0x8, /* Dst set in sendto or sendmsg */
};
struct netlink_skb_parms {
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1232,7 +1232,9 @@ retry:
bool __netlink_ns_capable(const struct netlink_skb_parms *nsp,
struct user_namespace *user_ns, int cap)
{
- return sk_ns_capable(nsp->sk, user_ns, cap);
+ return ((nsp->flags & NETLINK_SKB_DST) ||
+ file_ns_capable(nsp->sk->sk_socket->file, user_ns, cap)) &&
+ ns_capable(user_ns, cap);
}
EXPORT_SYMBOL(__netlink_ns_capable);
@@ -2118,6 +2120,7 @@ static int netlink_sendmsg(struct kiocb
struct sk_buff *skb;
int err;
struct scm_cookie scm;
+ u32 netlink_skb_flags = 0;
if (msg->msg_flags&MSG_OOB)
return -EOPNOTSUPP;
@@ -2139,6 +2142,7 @@ static int netlink_sendmsg(struct kiocb
if ((dst_group || dst_portid) &&
!netlink_allowed(sock, NL_CFG_F_NONROOT_SEND))
goto out;
+ netlink_skb_flags |= NETLINK_SKB_DST;
} else {
dst_portid = nlk->dst_portid;
dst_group = nlk->dst_group;
@@ -2168,6 +2172,7 @@ static int netlink_sendmsg(struct kiocb
NETLINK_CB(skb).portid = nlk->portid;
NETLINK_CB(skb).dst_group = dst_group;
NETLINK_CB(skb).creds = siocb->scm->creds;
+ NETLINK_CB(skb).flags = netlink_skb_flags;
err = -EFAULT;
if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 11/52] netlink: rate-limit leftover bytes warning and print process name
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (9 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 10/52] netlink: Only check file credentials for implicit destinations Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 12/52] net: tunnels - enable module autoloading Greg Kroah-Hartman
` (40 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Michal Schmidt, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Schmidt <mschmidt@redhat.com>
[ Upstream commit bfc5184b69cf9eeb286137640351c650c27f118a ]
Any process is able to send netlink messages with leftover bytes.
Make the warning rate-limited to prevent too much log spam.
The warning is supposed to help find userspace bugs, so print the
triggering command name to implicate the buggy program.
[v2: Use pr_warn_ratelimited instead of printk_ratelimited.]
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/nlattr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -201,8 +201,8 @@ int nla_parse(struct nlattr **tb, int ma
}
if (unlikely(rem > 0))
- printk(KERN_WARNING "netlink: %d bytes leftover after parsing "
- "attributes.\n", rem);
+ pr_warn_ratelimited("netlink: %d bytes leftover after parsing attributes in process `%s'.\n",
+ rem, current->comm);
err = 0;
errout:
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 12/52] net: tunnels - enable module autoloading
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (10 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 11/52] netlink: rate-limit leftover bytes warning and print process name Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 13/52] net: fix inet_getid() and ipv6_select_ident() bugs Greg Kroah-Hartman
` (39 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Tom Gundersen, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tom Gundersen <teg@jklm.no>
[ Upstream commit f98f89a0104454f35a62d681683c844f6dbf4043 ]
Enable the module alias hookup to allow tunnel modules to be autoloaded on demand.
This is in line with how most other netdev kinds work, and will allow userspace
to create tunnels without having CAP_SYS_MODULE.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv4/ipip.c | 1 +
net/ipv6/ip6_tunnel.c | 1 +
net/ipv6/sit.c | 1 +
3 files changed, 3 insertions(+)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -483,4 +483,5 @@ static void __exit ipip_fini(void)
module_init(ipip_init);
module_exit(ipip_fini);
MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("ipip");
MODULE_ALIAS_NETDEV("tunl0");
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -61,6 +61,7 @@
MODULE_AUTHOR("Ville Nuorvala");
MODULE_DESCRIPTION("IPv6 tunneling device");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("ip6tnl");
MODULE_ALIAS_NETDEV("ip6tnl0");
#ifdef IP6_TNL_DEBUG
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1654,4 +1654,5 @@ xfrm_tunnel_failed:
module_init(sit_init);
module_exit(sit_cleanup);
MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("sit");
MODULE_ALIAS_NETDEV("sit0");
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 13/52] net: fix inet_getid() and ipv6_select_ident() bugs
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (11 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 12/52] net: tunnels - enable module autoloading Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 14/52] team: fix mtu setting Greg Kroah-Hartman
` (38 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Eric Dumazet, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 39c36094d78c39e038c1e499b2364e13bce36f54 ]
I noticed we were sending wrong IPv4 ID in TCP flows when MTU discovery
is disabled.
Note how GSO/TSO packets do not have monotonically incrementing ID.
06:37:41.575531 IP (id 14227, proto: TCP (6), length: 4396)
06:37:41.575534 IP (id 14272, proto: TCP (6), length: 65212)
06:37:41.575544 IP (id 14312, proto: TCP (6), length: 57972)
06:37:41.575678 IP (id 14317, proto: TCP (6), length: 7292)
06:37:41.575683 IP (id 14361, proto: TCP (6), length: 63764)
It appears I introduced this bug in linux-3.1.
inet_getid() must return the old value of peer->ip_id_count,
not the new one.
Lets revert this part, and remove the prevention of
a null identification field in IPv6 Fragment Extension Header,
which is dubious and not even done properly.
Fixes: 87c48fa3b463 ("ipv6: make fragment identifications less predictable")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/inetpeer.h | 9 +--------
net/ipv6/output_core.c | 11 +++--------
2 files changed, 4 insertions(+), 16 deletions(-)
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -178,16 +178,9 @@ static inline void inet_peer_refcheck(co
/* can be called with or without local BH being disabled */
static inline int inet_getid(struct inet_peer *p, int more)
{
- int old, new;
more++;
inet_peer_refcheck(p);
- do {
- old = atomic_read(&p->ip_id_count);
- new = old + more;
- if (!new)
- new = 1;
- } while (atomic_cmpxchg(&p->ip_id_count, old, new) != old);
- return new;
+ return atomic_add_return(more, &p->ip_id_count) - more;
}
#endif /* _NET_INETPEER_H */
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -9,7 +9,7 @@
void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
{
static atomic_t ipv6_fragmentation_id;
- int old, new;
+ int ident;
#if IS_ENABLED(CONFIG_IPV6)
if (rt && !(rt->dst.flags & DST_NOPEER)) {
@@ -25,13 +25,8 @@ void ipv6_select_ident(struct frag_hdr *
}
}
#endif
- do {
- old = atomic_read(&ipv6_fragmentation_id);
- new = old + 1;
- if (!new)
- new = 1;
- } while (atomic_cmpxchg(&ipv6_fragmentation_id, old, new) != old);
- fhdr->identification = htonl(new);
+ ident = atomic_inc_return(&ipv6_fragmentation_id);
+ fhdr->identification = htonl(ident);
}
EXPORT_SYMBOL(ipv6_select_ident);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 14/52] team: fix mtu setting
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (12 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 13/52] net: fix inet_getid() and ipv6_select_ident() bugs Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 15/52] tcp: fix cwnd undo on DSACK in F-RTO Greg Kroah-Hartman
` (37 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Jiri Pirko, Flavio Leitner, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Pirko <jiri@resnulli.us>
[ Upstream commit 9d0d68faea6962d62dd501cd6e71ce5cc8ed262b ]
Now it is not possible to set mtu to team device which has a port
enslaved to it. The reason is that when team_change_mtu() calls
dev_set_mtu() for port device, notificator for NETDEV_PRECHANGEMTU
event is called and team_device_event() returns NOTIFY_BAD forbidding
the change. So fix this by returning NOTIFY_DONE here in case team is
changing mtu in team_change_mtu().
Introduced-by: 3d249d4c "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/team/team.c | 7 ++++++-
include/linux/if_team.h | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1542,6 +1542,7 @@ static int team_change_mtu(struct net_de
* to traverse list in reverse under rcu_read_lock
*/
mutex_lock(&team->lock);
+ team->port_mtu_change_allowed = true;
list_for_each_entry(port, &team->port_list, list) {
err = dev_set_mtu(port->dev, new_mtu);
if (err) {
@@ -1550,6 +1551,7 @@ static int team_change_mtu(struct net_de
goto unwind;
}
}
+ team->port_mtu_change_allowed = false;
mutex_unlock(&team->lock);
dev->mtu = new_mtu;
@@ -1559,6 +1561,7 @@ static int team_change_mtu(struct net_de
unwind:
list_for_each_entry_continue_reverse(port, &team->port_list, list)
dev_set_mtu(port->dev, dev->mtu);
+ team->port_mtu_change_allowed = false;
mutex_unlock(&team->lock);
return err;
@@ -2678,7 +2681,9 @@ static int team_device_event(struct noti
break;
case NETDEV_CHANGEMTU:
/* Forbid to change mtu of underlaying device */
- return NOTIFY_BAD;
+ if (!port->team->port_mtu_change_allowed)
+ return NOTIFY_BAD;
+ break;
case NETDEV_PRE_TYPE_CHANGE:
/* Forbid to change type of underlaying device */
return NOTIFY_BAD;
--- a/include/linux/if_team.h
+++ b/include/linux/if_team.h
@@ -193,6 +193,7 @@ struct team {
bool user_carrier_enabled;
bool queue_override_enabled;
struct list_head *qom_lists; /* array of queue override mapping lists */
+ bool port_mtu_change_allowed;
long mode_priv[TEAM_MODE_PRIV_LONGS];
};
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 15/52] tcp: fix cwnd undo on DSACK in F-RTO
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (13 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 14/52] team: fix mtu setting Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 16/52] net: filter: fix typo in sparc BPF JIT Greg Kroah-Hartman
` (36 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Yuchung Cheng, Neal Cardwell,
David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yuchung Cheng <ycheng@google.com>
[ Upstream commit 0cfa5c07d6d1d7f8e710fc671c5ba1ce85e09fa4 ]
This bug is discovered by an recent F-RTO issue on tcpm list
https://www.ietf.org/mail-archive/web/tcpm/current/msg08794.html
The bug is that currently F-RTO does not use DSACK to undo cwnd in
certain cases: upon receiving an ACK after the RTO retransmission in
F-RTO, and the ACK has DSACK indicating the retransmission is spurious,
the sender only calls tcp_try_undo_loss() if some never retransmisted
data is sacked (FLAG_ORIG_DATA_SACKED).
The correct behavior is to unconditionally call tcp_try_undo_loss so
the DSACK information is used properly to undo the cwnd reduction.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv4/tcp_input.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2720,13 +2720,12 @@ static void tcp_process_loss(struct sock
bool recovered = !before(tp->snd_una, tp->high_seq);
if (tp->frto) { /* F-RTO RFC5682 sec 3.1 (sack enhanced version). */
- if (flag & FLAG_ORIG_SACK_ACKED) {
- /* Step 3.b. A timeout is spurious if not all data are
- * lost, i.e., never-retransmitted data are (s)acked.
- */
- tcp_try_undo_loss(sk, true);
+ /* Step 3.b. A timeout is spurious if not all data are
+ * lost, i.e., never-retransmitted data are (s)acked.
+ */
+ if (tcp_try_undo_loss(sk, flag & FLAG_ORIG_SACK_ACKED))
return;
- }
+
if (after(tp->snd_nxt, tp->high_seq) &&
(flag & FLAG_DATA_SACKED || is_dupack)) {
tp->frto = 0; /* Loss was real: 2nd part of step 3.a */
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 16/52] net: filter: fix typo in sparc BPF JIT
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (14 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 15/52] tcp: fix cwnd undo on DSACK in F-RTO Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 17/52] net: filter: fix sparc32 typo Greg Kroah-Hartman
` (35 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Alexei Starovoitov, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Starovoitov <ast@plumgrid.com>
[ Upstream commit 569810d1e3278907264f5b115281fca3f0038d53 ]
fix typo in sparc codegen for SKF_AD_IFINDEX and SKF_AD_HATYPE
classic BPF extensions
Fixes: 2809a2087cc4 ("net: filter: Just In Time compiler for sparc")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/sparc/net/bpf_jit_comp.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/arch/sparc/net/bpf_jit_comp.c
+++ b/arch/sparc/net/bpf_jit_comp.c
@@ -83,9 +83,9 @@ static void bpf_flush_icache(void *start
#define BNE (F2(0, 2) | CONDNE)
#ifdef CONFIG_SPARC64
-#define BNE_PTR (F2(0, 1) | CONDNE | (2 << 20))
+#define BE_PTR (F2(0, 1) | CONDE | (2 << 20))
#else
-#define BNE_PTR BNE
+#define BE_PTR BNE
#endif
#define SETHI(K, REG) \
@@ -600,7 +600,7 @@ void bpf_jit_compile(struct sk_filter *f
case BPF_S_ANC_IFINDEX:
emit_skb_loadptr(dev, r_A);
emit_cmpi(r_A, 0);
- emit_branch(BNE_PTR, cleanup_addr + 4);
+ emit_branch(BE_PTR, cleanup_addr + 4);
emit_nop();
emit_load32(r_A, struct net_device, ifindex, r_A);
break;
@@ -613,7 +613,7 @@ void bpf_jit_compile(struct sk_filter *f
case BPF_S_ANC_HATYPE:
emit_skb_loadptr(dev, r_A);
emit_cmpi(r_A, 0);
- emit_branch(BNE_PTR, cleanup_addr + 4);
+ emit_branch(BE_PTR, cleanup_addr + 4);
emit_nop();
emit_load16(r_A, struct net_device, type, r_A);
break;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 17/52] net: filter: fix sparc32 typo
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (15 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 16/52] net: filter: fix typo in sparc BPF JIT Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 19/52] net: force a list_del() in unregister_netdevice_many() Greg Kroah-Hartman
` (34 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Alexei Starovoitov, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Starovoitov <ast@plumgrid.com>
[ Upstream commit 588f5d629b3369aba88f52217d1c473a28fa7723 ]
Fixes: 569810d1e327 ("net: filter: fix typo in sparc BPF JIT")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/sparc/net/bpf_jit_comp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/sparc/net/bpf_jit_comp.c
+++ b/arch/sparc/net/bpf_jit_comp.c
@@ -85,7 +85,7 @@ static void bpf_flush_icache(void *start
#ifdef CONFIG_SPARC64
#define BE_PTR (F2(0, 1) | CONDE | (2 << 20))
#else
-#define BE_PTR BNE
+#define BE_PTR BE
#endif
#define SETHI(K, REG) \
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 19/52] net: force a list_del() in unregister_netdevice_many()
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (16 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 17/52] net: filter: fix sparc32 typo Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 20/52] ipip, sit: fix ipv4_{update_pmtu,redirect} calls Greg Kroah-Hartman
` (33 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Eric Dumazet, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 87757a917b0b3c0787e0563c679762152be81312 ]
unregister_netdevice_many() API is error prone and we had too
many bugs because of dangling LIST_HEAD on stacks.
See commit f87e6f47933e3e ("net: dont leave active on stack LIST_HEAD")
In fact, instead of making sure no caller leaves an active list_head,
just force a list_del() in the callee. No one seems to need to access
the list after unregister_netdevice_many()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/macvlan.c | 1 -
net/core/dev.c | 5 ++++-
net/core/rtnetlink.c | 1 -
net/mac80211/iface.c | 1 -
4 files changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -961,7 +961,6 @@ static int macvlan_device_event(struct n
list_for_each_entry_safe(vlan, next, &port->vlans, list)
vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill);
unregister_netdevice_many(&list_kill);
- list_del(&list_kill);
break;
case NETDEV_PRE_TYPE_CHANGE:
/* Forbid underlaying device to change its type. */
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5827,6 +5827,9 @@ EXPORT_SYMBOL(unregister_netdevice_queue
/**
* unregister_netdevice_many - unregister many devices
* @head: list of devices
+ *
+ * Note: As most callers use a stack allocated list_head,
+ * we force a list_del() to make sure stack wont be corrupted later.
*/
void unregister_netdevice_many(struct list_head *head)
{
@@ -5836,6 +5839,7 @@ void unregister_netdevice_many(struct li
rollback_registered_many(head);
list_for_each_entry(dev, head, unreg_list)
net_set_todo(dev);
+ list_del(head);
}
}
EXPORT_SYMBOL(unregister_netdevice_many);
@@ -6252,7 +6256,6 @@ static void __net_exit default_device_ex
}
}
unregister_netdevice_many(&dev_kill_list);
- list_del(&dev_kill_list);
rtnl_unlock();
}
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1601,7 +1601,6 @@ static int rtnl_dellink(struct sk_buff *
ops->dellink(dev, &list_kill);
unregister_netdevice_many(&list_kill);
- list_del(&list_kill);
return 0;
}
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1746,7 +1746,6 @@ void ieee80211_remove_interfaces(struct
}
mutex_unlock(&local->iflist_mtx);
unregister_netdevice_many(&unreg_list);
- list_del(&unreg_list);
list_for_each_entry_safe(sdata, tmp, &wdev_list, list) {
list_del(&sdata->list);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 20/52] ipip, sit: fix ipv4_{update_pmtu,redirect} calls
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (17 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 19/52] net: force a list_del() in unregister_netdevice_many() Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 21/52] ipv4: fix a race in ip4_datagram_release_cb() Greg Kroah-Hartman
` (32 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Dmitry Popov, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Popov <ixaphire@qrator.net>
[ Upstream commit 2346829e641b804ece9ac9298136b56d9567c278 ]
ipv4_{update_pmtu,redirect} were called with tunnel's ifindex (t->dev is a
tunnel netdevice). It caused wrong route lookup and failure of pmtu update or
redirect. We should use the same ifindex that we use in ip_route_output_* in
*tunnel_xmit code. It is t->parms.link .
Signed-off-by: Dmitry Popov <ixaphire@qrator.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv4/ipip.c | 4 ++--
net/ipv6/sit.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -149,13 +149,13 @@ static int ipip_err(struct sk_buff *skb,
if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
ipv4_update_pmtu(skb, dev_net(skb->dev), info,
- t->dev->ifindex, 0, IPPROTO_IPIP, 0);
+ t->parms.link, 0, IPPROTO_IPIP, 0);
err = 0;
goto out;
}
if (type == ICMP_REDIRECT) {
- ipv4_redirect(skb, dev_net(skb->dev), t->dev->ifindex, 0,
+ ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
IPPROTO_IPIP, 0);
err = 0;
goto out;
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -530,12 +530,12 @@ static int ipip6_err(struct sk_buff *skb
if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
ipv4_update_pmtu(skb, dev_net(skb->dev), info,
- t->dev->ifindex, 0, IPPROTO_IPV6, 0);
+ t->parms.link, 0, IPPROTO_IPV6, 0);
err = 0;
goto out;
}
if (type == ICMP_REDIRECT) {
- ipv4_redirect(skb, dev_net(skb->dev), t->dev->ifindex, 0,
+ ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
IPPROTO_IPV6, 0);
err = 0;
goto out;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 21/52] ipv4: fix a race in ip4_datagram_release_cb()
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (18 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 20/52] ipip, sit: fix ipv4_{update_pmtu,redirect} calls Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 22/52] sctp: Fix sk_ack_backlog wrap-around problem Greg Kroah-Hartman
` (31 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Alexey Preobrazhensky, dormando,
Eric Dumazet, Steffen Klassert, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 9709674e68646cee5a24e3000b3558d25412203a ]
Alexey gave a AddressSanitizer[1] report that finally gave a good hint
at where was the origin of various problems already reported by Dormando
in the past [2]
Problem comes from the fact that UDP can have a lockless TX path, and
concurrent threads can manipulate sk_dst_cache, while another thread,
is holding socket lock and calls __sk_dst_set() in
ip4_datagram_release_cb() (this was added in linux-3.8)
It seems that all we need to do is to use sk_dst_check() and
sk_dst_set() so that all the writers hold same spinlock
(sk->sk_dst_lock) to prevent corruptions.
TCP stack do not need this protection, as all sk_dst_cache writers hold
the socket lock.
[1]
https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel
AddressSanitizer: heap-use-after-free in ipv4_dst_check
Read of size 2 by thread T15453:
[<ffffffff817daa3a>] ipv4_dst_check+0x1a/0x90 ./net/ipv4/route.c:1116
[<ffffffff8175b789>] __sk_dst_check+0x89/0xe0 ./net/core/sock.c:531
[<ffffffff81830a36>] ip4_datagram_release_cb+0x46/0x390 ??:0
[<ffffffff8175eaea>] release_sock+0x17a/0x230 ./net/core/sock.c:2413
[<ffffffff81830882>] ip4_datagram_connect+0x462/0x5d0 ??:0
[<ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
[<ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
[<ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
[<ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629
Freed by thread T15455:
[<ffffffff8178d9b8>] dst_destroy+0xa8/0x160 ./net/core/dst.c:251
[<ffffffff8178de25>] dst_release+0x45/0x80 ./net/core/dst.c:280
[<ffffffff818304c1>] ip4_datagram_connect+0xa1/0x5d0 ??:0
[<ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
[<ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
[<ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
[<ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629
Allocated by thread T15453:
[<ffffffff8178d291>] dst_alloc+0x81/0x2b0 ./net/core/dst.c:171
[<ffffffff817db3b7>] rt_dst_alloc+0x47/0x50 ./net/ipv4/route.c:1406
[< inlined >] __ip_route_output_key+0x3e8/0xf70
__mkroute_output ./net/ipv4/route.c:1939
[<ffffffff817dde08>] __ip_route_output_key+0x3e8/0xf70 ./net/ipv4/route.c:2161
[<ffffffff817deb34>] ip_route_output_flow+0x14/0x30 ./net/ipv4/route.c:2249
[<ffffffff81830737>] ip4_datagram_connect+0x317/0x5d0 ??:0
[<ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
[<ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
[<ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
[<ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629
[2]
<4>[196727.311203] general protection fault: 0000 [#1] SMP
<4>[196727.311224] Modules linked in: xt_TEE xt_dscp xt_DSCP macvlan bridge coretemp crc32_pclmul ghash_clmulni_intel gpio_ich microcode ipmi_watchdog ipmi_devintf sb_edac edac_core lpc_ich mfd_core tpm_tis tpm tpm_bios ipmi_si ipmi_msghandler isci igb libsas i2c_algo_bit ixgbe ptp pps_core mdio
<4>[196727.311333] CPU: 17 PID: 0 Comm: swapper/17 Not tainted 3.10.26 #1
<4>[196727.311344] Hardware name: Supermicro X9DRi-LN4+/X9DR3-LN4+/X9DRi-LN4+/X9DR3-LN4+, BIOS 3.0 07/05/2013
<4>[196727.311364] task: ffff885e6f069700 ti: ffff885e6f072000 task.ti: ffff885e6f072000
<4>[196727.311377] RIP: 0010:[<ffffffff815f8c7f>] [<ffffffff815f8c7f>] ipv4_dst_destroy+0x4f/0x80
<4>[196727.311399] RSP: 0018:ffff885effd23a70 EFLAGS: 00010282
<4>[196727.311409] RAX: dead000000200200 RBX: ffff8854c398ecc0 RCX: 0000000000000040
<4>[196727.311423] RDX: dead000000100100 RSI: dead000000100100 RDI: dead000000200200
<4>[196727.311437] RBP: ffff885effd23a80 R08: ffffffff815fd9e0 R09: ffff885d5a590800
<4>[196727.311451] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
<4>[196727.311464] R13: ffffffff81c8c280 R14: 0000000000000000 R15: ffff880e85ee16ce
<4>[196727.311510] FS: 0000000000000000(0000) GS:ffff885effd20000(0000) knlGS:0000000000000000
<4>[196727.311554] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[196727.311581] CR2: 00007a46751eb000 CR3: 0000005e65688000 CR4: 00000000000407e0
<4>[196727.311625] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>[196727.311669] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[196727.311713] Stack:
<4>[196727.311733] ffff8854c398ecc0 ffff8854c398ecc0 ffff885effd23ab0 ffffffff815b7f42
<4>[196727.311784] ffff88be6595bc00 ffff8854c398ecc0 0000000000000000 ffff8854c398ecc0
<4>[196727.311834] ffff885effd23ad0 ffffffff815b86c6 ffff885d5a590800 ffff8816827821c0
<4>[196727.311885] Call Trace:
<4>[196727.311907] <IRQ>
<4>[196727.311912] [<ffffffff815b7f42>] dst_destroy+0x32/0xe0
<4>[196727.311959] [<ffffffff815b86c6>] dst_release+0x56/0x80
<4>[196727.311986] [<ffffffff81620bd5>] tcp_v4_do_rcv+0x2a5/0x4a0
<4>[196727.312013] [<ffffffff81622b5a>] tcp_v4_rcv+0x7da/0x820
<4>[196727.312041] [<ffffffff815fd9e0>] ? ip_rcv_finish+0x360/0x360
<4>[196727.312070] [<ffffffff815de02d>] ? nf_hook_slow+0x7d/0x150
<4>[196727.312097] [<ffffffff815fd9e0>] ? ip_rcv_finish+0x360/0x360
<4>[196727.312125] [<ffffffff815fda92>] ip_local_deliver_finish+0xb2/0x230
<4>[196727.312154] [<ffffffff815fdd9a>] ip_local_deliver+0x4a/0x90
<4>[196727.312183] [<ffffffff815fd799>] ip_rcv_finish+0x119/0x360
<4>[196727.312212] [<ffffffff815fe00b>] ip_rcv+0x22b/0x340
<4>[196727.312242] [<ffffffffa0339680>] ? macvlan_broadcast+0x160/0x160 [macvlan]
<4>[196727.312275] [<ffffffff815b0c62>] __netif_receive_skb_core+0x512/0x640
<4>[196727.312308] [<ffffffff811427fb>] ? kmem_cache_alloc+0x13b/0x150
<4>[196727.312338] [<ffffffff815b0db1>] __netif_receive_skb+0x21/0x70
<4>[196727.312368] [<ffffffff815b0fa1>] netif_receive_skb+0x31/0xa0
<4>[196727.312397] [<ffffffff815b1ae8>] napi_gro_receive+0xe8/0x140
<4>[196727.312433] [<ffffffffa00274f1>] ixgbe_poll+0x551/0x11f0 [ixgbe]
<4>[196727.312463] [<ffffffff815fe00b>] ? ip_rcv+0x22b/0x340
<4>[196727.312491] [<ffffffff815b1691>] net_rx_action+0x111/0x210
<4>[196727.312521] [<ffffffff815b0db1>] ? __netif_receive_skb+0x21/0x70
<4>[196727.312552] [<ffffffff810519d0>] __do_softirq+0xd0/0x270
<4>[196727.312583] [<ffffffff816cef3c>] call_softirq+0x1c/0x30
<4>[196727.312613] [<ffffffff81004205>] do_softirq+0x55/0x90
<4>[196727.312640] [<ffffffff81051c85>] irq_exit+0x55/0x60
<4>[196727.312668] [<ffffffff816cf5c3>] do_IRQ+0x63/0xe0
<4>[196727.312696] [<ffffffff816c5aaa>] common_interrupt+0x6a/0x6a
<4>[196727.312722] <EOI>
<1>[196727.313071] RIP [<ffffffff815f8c7f>] ipv4_dst_destroy+0x4f/0x80
<4>[196727.313100] RSP <ffff885effd23a70>
<4>[196727.313377] ---[ end trace 64b3f14fae0f2e29 ]---
<0>[196727.380908] Kernel panic - not syncing: Fatal exception in interrupt
Reported-by: Alexey Preobrazhensky <preobr@google.com>
Reported-by: dormando <dormando@rydia.ne>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 8141ed9fcedb2 ("ipv4: Add a socket release callback for datagram sockets")
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv4/datagram.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -86,18 +86,26 @@ out:
}
EXPORT_SYMBOL(ip4_datagram_connect);
+/* Because UDP xmit path can manipulate sk_dst_cache without holding
+ * socket lock, we need to use sk_dst_set() here,
+ * even if we own the socket lock.
+ */
void ip4_datagram_release_cb(struct sock *sk)
{
const struct inet_sock *inet = inet_sk(sk);
const struct ip_options_rcu *inet_opt;
__be32 daddr = inet->inet_daddr;
+ struct dst_entry *dst;
struct flowi4 fl4;
struct rtable *rt;
- if (! __sk_dst_get(sk) || __sk_dst_check(sk, 0))
- return;
-
rcu_read_lock();
+
+ dst = __sk_dst_get(sk);
+ if (!dst || !dst->obsolete || dst->ops->check(dst, 0)) {
+ rcu_read_unlock();
+ return;
+ }
inet_opt = rcu_dereference(inet->inet_opt);
if (inet_opt && inet_opt->opt.srr)
daddr = inet_opt->opt.faddr;
@@ -105,8 +113,10 @@ void ip4_datagram_release_cb(struct sock
inet->inet_saddr, inet->inet_dport,
inet->inet_sport, sk->sk_protocol,
RT_CONN_FLAGS(sk), sk->sk_bound_dev_if);
- if (!IS_ERR(rt))
- __sk_dst_set(sk, &rt->dst);
+
+ dst = !IS_ERR(rt) ? &rt->dst : NULL;
+ sk_dst_set(sk, dst);
+
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(ip4_datagram_release_cb);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 22/52] sctp: Fix sk_ack_backlog wrap-around problem
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (19 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 21/52] ipv4: fix a race in ip4_datagram_release_cb() Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 23/52] rtnetlink: fix userspace API breakage for iproute2 < v3.9.0 Greg Kroah-Hartman
` (30 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Xufeng Zhang, Daniel Borkmann,
Vlad Yasevich, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xufeng Zhang <xufeng.zhang@windriver.com>
[ Upstream commit d3217b15a19a4779c39b212358a5c71d725822ee ]
Consider the scenario:
For a TCP-style socket, while processing the COOKIE_ECHO chunk in
sctp_sf_do_5_1D_ce(), after it has passed a series of sanity check,
a new association would be created in sctp_unpack_cookie(), but afterwards,
some processing maybe failed, and sctp_association_free() will be called to
free the previously allocated association, in sctp_association_free(),
sk_ack_backlog value is decremented for this socket, since the initial
value for sk_ack_backlog is 0, after the decrement, it will be 65535,
a wrap-around problem happens, and if we want to establish new associations
afterward in the same socket, ABORT would be triggered since sctp deem the
accept queue as full.
Fix this issue by only decrementing sk_ack_backlog for associations in
the endpoint's list.
Fix-suggested-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Xufeng Zhang <xufeng.zhang@windriver.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/associola.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -387,7 +387,7 @@ void sctp_association_free(struct sctp_a
/* Only real associations count against the endpoint, so
* don't bother for if this is a temporary association.
*/
- if (!asoc->temp) {
+ if (!list_empty(&asoc->asocs)) {
list_del(&asoc->asocs);
/* Decrement the backlog value for a TCP-style listening
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 23/52] rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (20 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 22/52] sctp: Fix sk_ack_backlog wrap-around problem Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 24/52] vxlan: use dev->needed_headroom instead of dev->hard_header_len Greg Kroah-Hartman
` (29 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Michal Schmidt, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Schmidt <mschmidt@redhat.com>
[ Upstream commit e5eca6d41f53db48edd8cf88a3f59d2c30227f8e ]
When running RHEL6 userspace on a current upstream kernel, "ip link"
fails to show VF information.
The reason is a kernel<->userspace API change introduced by commit
88c5b5ce5cb57 ("rtnetlink: Call nlmsg_parse() with correct header length"),
after which the kernel does not see iproute2's IFLA_EXT_MASK attribute
in the netlink request.
iproute2 adjusted for the API change in its commit 63338dca4513
("libnetlink: Use ifinfomsg instead of rtgenmsg in rtnl_wilddump_req_filter").
The problem has been noticed before:
http://marc.info/?l=linux-netdev&m=136692296022182&w=2
(Subject: Re: getting VF link info seems to be broken in 3.9-rc8)
We can do better than tell those with old userspace to upgrade. We can
recognize the old iproute2 in the kernel by checking the netlink message
length. Even when including the IFLA_EXT_MASK attribute, its netlink
message is shorter than struct ifinfomsg.
With this patch "ip link" shows VF information in both old and new
iproute2 versions.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/core/rtnetlink.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1044,6 +1044,7 @@ static int rtnl_dump_ifinfo(struct sk_bu
struct nlattr *tb[IFLA_MAX+1];
u32 ext_filter_mask = 0;
int err;
+ int hdrlen;
s_h = cb->args[0];
s_idx = cb->args[1];
@@ -1051,8 +1052,17 @@ static int rtnl_dump_ifinfo(struct sk_bu
rcu_read_lock();
cb->seq = net->dev_base_seq;
- if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
- ifla_policy) >= 0) {
+ /* A hack to preserve kernel<->userspace interface.
+ * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
+ * However, before Linux v3.9 the code here assumed rtgenmsg and that's
+ * what iproute2 < v3.9.0 used.
+ * We can detect the old iproute2. Even including the IFLA_EXT_MASK
+ * attribute, its netlink message is shorter than struct ifinfomsg.
+ */
+ hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ?
+ sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
+
+ if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
if (tb[IFLA_EXT_MASK])
ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
@@ -1907,9 +1917,13 @@ static u16 rtnl_calcit(struct sk_buff *s
struct nlattr *tb[IFLA_MAX+1];
u32 ext_filter_mask = 0;
u16 min_ifinfo_dump_size = 0;
+ int hdrlen;
+
+ /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
+ hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ?
+ sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
- if (nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
- ifla_policy) >= 0) {
+ if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
if (tb[IFLA_EXT_MASK])
ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 24/52] vxlan: use dev->needed_headroom instead of dev->hard_header_len
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (21 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 23/52] rtnetlink: fix userspace API breakage for iproute2 < v3.9.0 Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 25/52] net/mlx4_core: pass pci_device_id.driver_data to __mlx4_init_one during reset Greg Kroah-Hartman
` (28 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, David S. Miller, stephen hemminger,
Pravin B Shelar, Cong Wang, Cong Wang
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cong Wang <cwang@twopensource.com>
[ Upstream commit 2853af6a2ea1a8ed09b09dd4fb578e7f435e8d34 ]
When we mirror packets from a vxlan tunnel to other device,
the mirror device should see the same packets (that is, without
outer header). Because vxlan tunnel sets dev->hard_header_len,
tcf_mirred() resets mac header back to outer mac, the mirror device
actually sees packets with outer headers
Vxlan tunnel should set dev->needed_headroom instead of
dev->hard_header_len, like what other ip tunnels do. This fixes
the above problem.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: stephen hemminger <stephen@networkplumber.org>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1314,7 +1314,7 @@ static void vxlan_setup(struct net_devic
eth_hw_addr_random(dev);
ether_setup(dev);
- dev->hard_header_len = ETH_HLEN + VXLAN_HEADROOM;
+ dev->needed_headroom = ETH_HLEN + VXLAN_HEADROOM;
dev->netdev_ops = &vxlan_netdev_ops;
dev->destructor = vxlan_free;
@@ -1454,7 +1454,7 @@ static int vxlan_newlink(struct net *net
dev->mtu = lowerdev->mtu - VXLAN_HEADROOM;
/* update header length based on lower device */
- dev->hard_header_len = lowerdev->hard_header_len +
+ dev->needed_headroom = lowerdev->hard_header_len +
VXLAN_HEADROOM;
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 25/52] net/mlx4_core: pass pci_device_id.driver_data to __mlx4_init_one during reset
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (22 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 24/52] vxlan: use dev->needed_headroom instead of dev->hard_header_len Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one() Greg Kroah-Hartman
` (27 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Wei Yang, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wei Yang <weiyang@linux.vnet.ibm.com>
[ No upstream commit, this is a cherry picked backport enabler. ]
The second parameter of __mlx4_init_one() is used to identify whether the
pci_dev is a PF or VF. Currently, when it is invoked in mlx4_pci_slot_reset()
this information is missed.
This patch match the pci_dev with mlx4_pci_table and passes the
pci_device_id.driver_data to __mlx4_init_one() in mlx4_pci_slot_reset().
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx4/main.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2517,7 +2517,11 @@ static pci_ers_result_t mlx4_pci_err_det
static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
{
- int ret = __mlx4_init_one(pdev, 0);
+ const struct pci_device_id *id;
+ int ret;
+
+ id = pci_match_id(mlx4_pci_table, pdev);
+ ret = __mlx4_init_one(pdev, id->driver_data);
return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (23 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 25/52] net/mlx4_core: pass pci_device_id.driver_data to __mlx4_init_one during reset Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-25 6:02 ` Or Gerlitz
2014-06-25 6:02 ` Or Gerlitz
2014-06-24 15:50 ` [PATCH 3.10 27/52] KVM: lapic: sync highest ISR to hardware apic on EOI Greg Kroah-Hartman
` (26 subsequent siblings)
51 siblings, 2 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Bjorn Helgaas, Amir Vadai,
Jack Morgenstein, Or Gerlitz, Wei Yang, David S. Miller
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wei Yang <weiyang@linux.vnet.ibm.com>
[ Upstream commit befdf8978accecac2e0739e6b5075afc62db37fe ]
pci_match_id() just match the static pci_device_id, which may return NULL if
someone binds the driver to a device manually using
/sys/bus/pci/drivers/.../new_id.
This patch wrap up a helper function __mlx4_remove_one() which does the tear
down function but preserve the drv_data. Functions like
mlx4_pci_err_detected() and mlx4_restart_one() will call this one with out
releasing drvdata.
Fixes: 97a5221 "net/mlx4_core: pass pci_device_id.driver_data to __mlx4_init_one during reset".
CC: Bjorn Helgaas <bhelgaas@google.com>
CC: Amir Vadai <amirv@mellanox.com>
CC: Jack Morgenstein <jackm@dev.mellanox.co.il>
CC: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx4/main.c | 170 ++++++++++++++++--------------
drivers/net/ethernet/mellanox/mlx4/mlx4.h | 1
2 files changed, 96 insertions(+), 75 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2129,13 +2129,8 @@ static int __mlx4_init_one(struct pci_de
/* Allow large DMA segments, up to the firmware limit of 1 GB */
dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- err = -ENOMEM;
- goto err_release_regions;
- }
-
- dev = &priv->dev;
+ dev = pci_get_drvdata(pdev);
+ priv = mlx4_priv(dev);
dev->pdev = pdev;
INIT_LIST_HEAD(&priv->ctx_list);
spin_lock_init(&priv->ctx_lock);
@@ -2300,8 +2295,7 @@ slave_start:
mlx4_sense_init(dev);
mlx4_start_sense(dev);
- priv->pci_dev_data = pci_dev_data;
- pci_set_drvdata(pdev, dev);
+ priv->removed = 0;
return 0;
@@ -2367,84 +2361,110 @@ err_disable_pdev:
static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
+ struct mlx4_priv *priv;
+ struct mlx4_dev *dev;
+
printk_once(KERN_INFO "%s", mlx4_version);
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev = &priv->dev;
+ pci_set_drvdata(pdev, dev);
+ priv->pci_dev_data = id->driver_data;
+
return __mlx4_init_one(pdev, id->driver_data);
}
-static void mlx4_remove_one(struct pci_dev *pdev)
+static void __mlx4_remove_one(struct pci_dev *pdev)
{
struct mlx4_dev *dev = pci_get_drvdata(pdev);
struct mlx4_priv *priv = mlx4_priv(dev);
+ int pci_dev_data;
int p;
- if (dev) {
- /* in SRIOV it is not allowed to unload the pf's
- * driver while there are alive vf's */
- if (mlx4_is_master(dev)) {
- if (mlx4_how_many_lives_vf(dev))
- printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
- }
- mlx4_stop_sense(dev);
- mlx4_unregister_device(dev);
+ if (priv->removed)
+ return;
- for (p = 1; p <= dev->caps.num_ports; p++) {
- mlx4_cleanup_port_info(&priv->port[p]);
- mlx4_CLOSE_PORT(dev, p);
- }
+ pci_dev_data = priv->pci_dev_data;
- if (mlx4_is_master(dev))
- mlx4_free_resource_tracker(dev,
- RES_TR_FREE_SLAVES_ONLY);
+ /* in SRIOV it is not allowed to unload the pf's
+ * driver while there are alive vf's */
+ if (mlx4_is_master(dev)) {
+ if (mlx4_how_many_lives_vf(dev))
+ printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
+ }
+ mlx4_stop_sense(dev);
+ mlx4_unregister_device(dev);
- mlx4_cleanup_counters_table(dev);
- mlx4_cleanup_mcg_table(dev);
- mlx4_cleanup_qp_table(dev);
- mlx4_cleanup_srq_table(dev);
- mlx4_cleanup_cq_table(dev);
- mlx4_cmd_use_polling(dev);
- mlx4_cleanup_eq_table(dev);
- mlx4_cleanup_mr_table(dev);
- mlx4_cleanup_xrcd_table(dev);
- mlx4_cleanup_pd_table(dev);
+ for (p = 1; p <= dev->caps.num_ports; p++) {
+ mlx4_cleanup_port_info(&priv->port[p]);
+ mlx4_CLOSE_PORT(dev, p);
+ }
- if (mlx4_is_master(dev))
- mlx4_free_resource_tracker(dev,
- RES_TR_FREE_STRUCTS_ONLY);
+ if (mlx4_is_master(dev))
+ mlx4_free_resource_tracker(dev,
+ RES_TR_FREE_SLAVES_ONLY);
- iounmap(priv->kar);
- mlx4_uar_free(dev, &priv->driver_uar);
- mlx4_cleanup_uar_table(dev);
- if (!mlx4_is_slave(dev))
- mlx4_clear_steering(dev);
- mlx4_free_eq_table(dev);
- if (mlx4_is_master(dev))
- mlx4_multi_func_cleanup(dev);
- mlx4_close_hca(dev);
- if (mlx4_is_slave(dev))
- mlx4_multi_func_cleanup(dev);
- mlx4_cmd_cleanup(dev);
-
- if (dev->flags & MLX4_FLAG_MSI_X)
- pci_disable_msix(pdev);
- if (dev->flags & MLX4_FLAG_SRIOV) {
- mlx4_warn(dev, "Disabling SR-IOV\n");
- pci_disable_sriov(pdev);
- }
+ mlx4_cleanup_counters_table(dev);
+ mlx4_cleanup_qp_table(dev);
+ mlx4_cleanup_srq_table(dev);
+ mlx4_cleanup_cq_table(dev);
+ mlx4_cmd_use_polling(dev);
+ mlx4_cleanup_eq_table(dev);
+ mlx4_cleanup_mcg_table(dev);
+ mlx4_cleanup_mr_table(dev);
+ mlx4_cleanup_xrcd_table(dev);
+ mlx4_cleanup_pd_table(dev);
- if (!mlx4_is_slave(dev))
- mlx4_free_ownership(dev);
+ if (mlx4_is_master(dev))
+ mlx4_free_resource_tracker(dev,
+ RES_TR_FREE_STRUCTS_ONLY);
- kfree(dev->caps.qp0_tunnel);
- kfree(dev->caps.qp0_proxy);
- kfree(dev->caps.qp1_tunnel);
- kfree(dev->caps.qp1_proxy);
-
- kfree(priv);
- pci_release_regions(pdev);
- pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
+ iounmap(priv->kar);
+ mlx4_uar_free(dev, &priv->driver_uar);
+ mlx4_cleanup_uar_table(dev);
+ if (!mlx4_is_slave(dev))
+ mlx4_clear_steering(dev);
+ mlx4_free_eq_table(dev);
+ if (mlx4_is_master(dev))
+ mlx4_multi_func_cleanup(dev);
+ mlx4_close_hca(dev);
+ if (mlx4_is_slave(dev))
+ mlx4_multi_func_cleanup(dev);
+ mlx4_cmd_cleanup(dev);
+
+ if (dev->flags & MLX4_FLAG_MSI_X)
+ pci_disable_msix(pdev);
+ if (dev->flags & MLX4_FLAG_SRIOV) {
+ mlx4_warn(dev, "Disabling SR-IOV\n");
+ pci_disable_sriov(pdev);
}
+
+ if (!mlx4_is_slave(dev))
+ mlx4_free_ownership(dev);
+
+ kfree(dev->caps.qp0_tunnel);
+ kfree(dev->caps.qp0_proxy);
+ kfree(dev->caps.qp1_tunnel);
+ kfree(dev->caps.qp1_proxy);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ memset(priv, 0, sizeof(*priv));
+ priv->pci_dev_data = pci_dev_data;
+ priv->removed = 1;
+}
+
+static void mlx4_remove_one(struct pci_dev *pdev)
+{
+ struct mlx4_dev *dev = pci_get_drvdata(pdev);
+ struct mlx4_priv *priv = mlx4_priv(dev);
+
+ __mlx4_remove_one(pdev);
+ kfree(priv);
+ pci_set_drvdata(pdev, NULL);
}
int mlx4_restart_one(struct pci_dev *pdev)
@@ -2454,7 +2474,7 @@ int mlx4_restart_one(struct pci_dev *pde
int pci_dev_data;
pci_dev_data = priv->pci_dev_data;
- mlx4_remove_one(pdev);
+ __mlx4_remove_one(pdev);
return __mlx4_init_one(pdev, pci_dev_data);
}
@@ -2509,7 +2529,7 @@ MODULE_DEVICE_TABLE(pci, mlx4_pci_table)
static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
- mlx4_remove_one(pdev);
+ __mlx4_remove_one(pdev);
return state == pci_channel_io_perm_failure ?
PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
@@ -2517,11 +2537,11 @@ static pci_ers_result_t mlx4_pci_err_det
static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
{
- const struct pci_device_id *id;
- int ret;
+ struct mlx4_dev *dev = pci_get_drvdata(pdev);
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int ret;
- id = pci_match_id(mlx4_pci_table, pdev);
- ret = __mlx4_init_one(pdev, id->driver_data);
+ ret = __mlx4_init_one(pdev, priv->pci_dev_data);
return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
}
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -743,6 +743,7 @@ struct mlx4_priv {
spinlock_t ctx_lock;
int pci_dev_data;
+ int removed;
struct list_head pgdir_list;
struct mutex pgdir_mutex;
^ permalink raw reply [flat|nested] 58+ messages in thread* Re: [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()
2014-06-24 15:50 ` [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one() Greg Kroah-Hartman
@ 2014-06-25 6:02 ` Or Gerlitz
2014-06-25 6:11 ` Wei Yang
2014-06-25 6:13 ` David Miller
2014-06-25 6:02 ` Or Gerlitz
1 sibling, 2 replies; 58+ messages in thread
From: Or Gerlitz @ 2014-06-25 6:02 UTC (permalink / raw)
To: Greg Kroah-Hartman, Wei Yang, David S. Miller
Cc: linux-kernel, stable, Bjorn Helgaas, Amir Vadai,
Jack Morgenstein, Or Gerlitz
On 24/06/2014 18:50, Greg Kroah-Hartman wrote:
> 3.10-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Wei Yang <weiyang@linux.vnet.ibm.com>
>
> [ Upstream commit befdf8978accecac2e0739e6b5075afc62db37fe ]
Hi Wei, Dave,
In the same manner you acted for 3.14.y -- for this commit to go into
3.10.y it must be accompanied by commit
da1de8dfff09d33d4a5345762c21b487028e25f5 "net/mlx4_core: Keep only one
driver entry release mlx4_priv" which fixes a bug introduced by the
former, agree?
Or.
^ permalink raw reply [flat|nested] 58+ messages in thread
* Re: [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()
2014-06-25 6:02 ` Or Gerlitz
@ 2014-06-25 6:11 ` Wei Yang
2014-06-25 6:13 ` David Miller
1 sibling, 0 replies; 58+ messages in thread
From: Wei Yang @ 2014-06-25 6:11 UTC (permalink / raw)
To: Or Gerlitz
Cc: Greg Kroah-Hartman, Wei Yang, David S. Miller, linux-kernel,
stable, Bjorn Helgaas, Amir Vadai, Jack Morgenstein, Or Gerlitz
On Wed, Jun 25, 2014 at 09:02:26AM +0300, Or Gerlitz wrote:
>On 24/06/2014 18:50, Greg Kroah-Hartman wrote:
>>3.10-stable review patch. If anyone has any objections, please let me know.
>>
>>------------------
>>
>>From: Wei Yang <weiyang@linux.vnet.ibm.com>
>>
>>[ Upstream commit befdf8978accecac2e0739e6b5075afc62db37fe ]
>
>Hi Wei, Dave,
>
>In the same manner you acted for 3.14.y -- for this commit to go into
>3.10.y it must be accompanied by commit
>da1de8dfff09d33d4a5345762c21b487028e25f5 "net/mlx4_core: Keep only
>one driver entry release mlx4_priv" which fixes a bug introduced by
>the former, agree?
>
Agree. The latest fix is important.
Do I need to rebase it on these versions and send out?
>Or.
--
Richard Yang
Help you, Help me
^ permalink raw reply [flat|nested] 58+ messages in thread
* Re: [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()
2014-06-25 6:02 ` Or Gerlitz
2014-06-25 6:11 ` Wei Yang
@ 2014-06-25 6:13 ` David Miller
1 sibling, 0 replies; 58+ messages in thread
From: David Miller @ 2014-06-25 6:13 UTC (permalink / raw)
To: ogerlitz
Cc: gregkh, weiyang, linux-kernel, stable, bhelgaas, amirv, jackm,
or.gerlitz
From: Or Gerlitz <ogerlitz@mellanox.com>
Date: Wed, 25 Jun 2014 09:02:26 +0300
> On 24/06/2014 18:50, Greg Kroah-Hartman wrote:
>> 3.10-stable review patch. If anyone has any objections, please let me
>> know.
>>
>> ------------------
>>
>> From: Wei Yang <weiyang@linux.vnet.ibm.com>
>>
>> [ Upstream commit befdf8978accecac2e0739e6b5075afc62db37fe ]
>
> Hi Wei, Dave,
>
> In the same manner you acted for 3.14.y -- for this commit to go into
> 3.10.y it must be accompanied by commit
> da1de8dfff09d33d4a5345762c21b487028e25f5 "net/mlx4_core: Keep only one
> driver entry release mlx4_priv" which fixes a bug introduced by the
> former, agree?
That's impossible, there is no shutdown method defined in the 3.10.x
version of the mlx4 driver.
That's why I didn't include that change.
^ permalink raw reply [flat|nested] 58+ messages in thread
* Re: [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()
2014-06-24 15:50 ` [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one() Greg Kroah-Hartman
2014-06-25 6:02 ` Or Gerlitz
@ 2014-06-25 6:02 ` Or Gerlitz
2014-06-25 6:22 ` Or Gerlitz
1 sibling, 1 reply; 58+ messages in thread
From: Or Gerlitz @ 2014-06-25 6:02 UTC (permalink / raw)
To: Greg Kroah-Hartman, Wei Yang, David S. Miller
Cc: linux-kernel, stable, Bjorn Helgaas, Amir Vadai,
Jack Morgenstein, Or Gerlitz
On 24/06/2014 18:50, Greg Kroah-Hartman wrote:
> 3.10-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Wei Yang <weiyang@linux.vnet.ibm.com>
>
> [ Upstream commit befdf8978accecac2e0739e6b5075afc62db37fe ]
Hi Wei, Dave,
In the same manner you acted for 3.14.y -- for this commit to go into
3.10.y it must be accompanied by commit
da1de8dfff09d33d4a5345762c21b487028e25f5 "net/mlx4_core: Keep only one
driver entry release mlx4_priv" which fixes a bug introduced by the
former, agree?
Or.
^ permalink raw reply [flat|nested] 58+ messages in thread
* Re: [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()
2014-06-25 6:02 ` Or Gerlitz
@ 2014-06-25 6:22 ` Or Gerlitz
0 siblings, 0 replies; 58+ messages in thread
From: Or Gerlitz @ 2014-06-25 6:22 UTC (permalink / raw)
To: Greg Kroah-Hartman, Wei Yang, David S. Miller
Cc: linux-kernel, stable, Bjorn Helgaas, Amir Vadai,
Jack Morgenstein, Or Gerlitz
On 25/06/2014 09:02, Or Gerlitz wrote:
> On 24/06/2014 18:50, Greg Kroah-Hartman wrote:
>> 3.10-stable review patch. If anyone has any objections, please let
>> me know.
>>
>> ------------------
>>
>> From: Wei Yang <weiyang@linux.vnet.ibm.com>
>>
>> [ Upstream commit befdf8978accecac2e0739e6b5075afc62db37fe ]
>
> Hi Wei, Dave,
>
> In the same manner you acted for 3.14.y -- for this commit to go into
> 3.10.y it must be accompanied by commit
> da1de8dfff09d33d4a5345762c21b487028e25f5 "net/mlx4_core: Keep only
> one driver entry release mlx4_priv" which fixes a bug introduced by
> the former, agree?
>
>
>
NAK, you're right... we only need the 2nd fix for kernels >= 3.14 which
contain commit 367d56f "net/mlx4: Support shutdown() interface", before
that -- it's irrelevant, sorry for the spam.
^ permalink raw reply [flat|nested] 58+ messages in thread
* [PATCH 3.10 27/52] KVM: lapic: sync highest ISR to hardware apic on EOI
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (24 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 26/52] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one() Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 28/52] ARM: at91: fix at91_sysirq_mask_rtc for sam9x5 SoCs Greg Kroah-Hartman
` (25 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Yang Zhang, Paolo Bonzini
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paolo Bonzini <pbonzini@redhat.com>
commit fc57ac2c9ca8109ea97fcc594f4be436944230cc upstream.
When Hyper-V enlightenments are in effect, Windows prefers to issue an
Hyper-V MSR write to issue an EOI rather than an x2apic MSR write.
The Hyper-V MSR write is not handled by the processor, and besides
being slower, this also causes bugs with APIC virtualization. The
reason is that on EOI the processor will modify the highest in-service
interrupt (SVI) field of the VMCS, as explained in section 29.1.4 of
the SDM; every other step in EOI virtualization is already done by
apic_send_eoi or on VM entry, but this one is missing.
We need to do the same, and be careful not to muck with the isr_count
and highest_isr_cache fields that are unused when virtual interrupt
delivery is enabled.
Reviewed-by: Yang Zhang <yang.z.zhang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/lapic.c | 62 +++++++++++++++++++++++++++++++++++----------------
1 file changed, 43 insertions(+), 19 deletions(-)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -370,6 +370,8 @@ static inline void apic_clear_irr(int ve
static inline void apic_set_isr(int vec, struct kvm_lapic *apic)
{
+ /* Note that we never get here with APIC virtualization enabled. */
+
if (!__apic_test_and_set_vector(vec, apic->regs + APIC_ISR))
++apic->isr_count;
BUG_ON(apic->isr_count > MAX_APIC_VECTOR);
@@ -381,12 +383,48 @@ static inline void apic_set_isr(int vec,
apic->highest_isr_cache = vec;
}
+static inline int apic_find_highest_isr(struct kvm_lapic *apic)
+{
+ int result;
+
+ /*
+ * Note that isr_count is always 1, and highest_isr_cache
+ * is always -1, with APIC virtualization enabled.
+ */
+ if (!apic->isr_count)
+ return -1;
+ if (likely(apic->highest_isr_cache != -1))
+ return apic->highest_isr_cache;
+
+ result = find_highest_vector(apic->regs + APIC_ISR);
+ ASSERT(result == -1 || result >= 16);
+
+ return result;
+}
+
static inline void apic_clear_isr(int vec, struct kvm_lapic *apic)
{
- if (__apic_test_and_clear_vector(vec, apic->regs + APIC_ISR))
+ struct kvm_vcpu *vcpu;
+ if (!__apic_test_and_clear_vector(vec, apic->regs + APIC_ISR))
+ return;
+
+ vcpu = apic->vcpu;
+
+ /*
+ * We do get here for APIC virtualization enabled if the guest
+ * uses the Hyper-V APIC enlightenment. In this case we may need
+ * to trigger a new interrupt delivery by writing the SVI field;
+ * on the other hand isr_count and highest_isr_cache are unused
+ * and must be left alone.
+ */
+ if (unlikely(kvm_apic_vid_enabled(vcpu->kvm)))
+ kvm_x86_ops->hwapic_isr_update(vcpu->kvm,
+ apic_find_highest_isr(apic));
+ else {
--apic->isr_count;
- BUG_ON(apic->isr_count < 0);
- apic->highest_isr_cache = -1;
+ BUG_ON(apic->isr_count < 0);
+ apic->highest_isr_cache = -1;
+ }
}
int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu)
@@ -466,22 +504,6 @@ static void pv_eoi_clr_pending(struct kv
__clear_bit(KVM_APIC_PV_EOI_PENDING, &vcpu->arch.apic_attention);
}
-static inline int apic_find_highest_isr(struct kvm_lapic *apic)
-{
- int result;
-
- /* Note that isr_count is always 1 with vid enabled */
- if (!apic->isr_count)
- return -1;
- if (likely(apic->highest_isr_cache != -1))
- return apic->highest_isr_cache;
-
- result = find_highest_vector(apic->regs + APIC_ISR);
- ASSERT(result == -1 || result >= 16);
-
- return result;
-}
-
void kvm_apic_update_tmr(struct kvm_vcpu *vcpu, u32 *tmr)
{
struct kvm_lapic *apic = vcpu->arch.apic;
@@ -1619,6 +1641,8 @@ int kvm_get_apic_interrupt(struct kvm_vc
int vector = kvm_apic_has_interrupt(vcpu);
struct kvm_lapic *apic = vcpu->arch.apic;
+ /* Note that we never get here with APIC virtualization enabled. */
+
if (vector == -1)
return -1;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 28/52] ARM: at91: fix at91_sysirq_mask_rtc for sam9x5 SoCs
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (25 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 27/52] KVM: lapic: sync highest ISR to hardware apic on EOI Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 29/52] MIPS: KVM: Allocate at least 16KB for exception handlers Greg Kroah-Hartman
` (24 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Boris BREZILLON, Bryan Evenson,
Johan Hovold, Nicolas Ferre, Andrew Victor,
Jean-Christophe Plagniol-Villard, Alessandro Zummo, Mark Roszko,
Andrew Morton, Linus Torvalds
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boris BREZILLON <boris.brezillon@free-electrons.com>
commit 9dcc87fec8947308e0111c65dcd881e6aa5b1673 upstream.
sam9x5 SoCs have the following errata:
"RTC: Interrupt Mask Register cannot be used
Interrupt Mask Register read always returns 0."
Hence we should not rely on what IMR claims about already masked IRQs
and just disable all IRQs.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reported-by: Bryan Evenson <bevenson@melinkcorp.com>
Reviewed-by: Johan Hovold <johan@hovold.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Bryan Evenson <bevenson@melinkcorp.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Mark Roszko <mark.roszko@gmail.com>
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>
---
arch/arm/mach-at91/sysirq_mask.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
--- a/arch/arm/mach-at91/sysirq_mask.c
+++ b/arch/arm/mach-at91/sysirq_mask.c
@@ -25,24 +25,28 @@
#include "generic.h"
-#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */
-#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */
+#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */
+#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */
+#define AT91_RTC_IRQ_MASK 0x1f /* Available IRQs mask */
void __init at91_sysirq_mask_rtc(u32 rtc_base)
{
void __iomem *base;
- u32 mask;
base = ioremap(rtc_base, 64);
if (!base)
return;
- mask = readl_relaxed(base + AT91_RTC_IMR);
- if (mask) {
- pr_info("AT91: Disabling rtc irq\n");
- writel_relaxed(mask, base + AT91_RTC_IDR);
- (void)readl_relaxed(base + AT91_RTC_IMR); /* flush */
- }
+ /*
+ * sam9x5 SoCs have the following errata:
+ * "RTC: Interrupt Mask Register cannot be used
+ * Interrupt Mask Register read always returns 0."
+ *
+ * Hence we're not relying on IMR values to disable
+ * interrupts.
+ */
+ writel_relaxed(AT91_RTC_IRQ_MASK, base + AT91_RTC_IDR);
+ (void)readl_relaxed(base + AT91_RTC_IMR); /* flush */
iounmap(base);
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 29/52] MIPS: KVM: Allocate at least 16KB for exception handlers
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (26 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 28/52] ARM: at91: fix at91_sysirq_mask_rtc for sam9x5 SoCs Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 30/52] USB: cdc-acm: fix write and suspend race Greg Kroah-Hartman
` (23 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, James Hogan, Paolo Bonzini,
Gleb Natapov, kvm, Ralf Baechle, linux-mips, Sanjay Lal
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: James Hogan <james.hogan@imgtec.com>
commit 7006e2dfda9adfa40251093604db76d7e44263b3 upstream.
Each MIPS KVM guest has its own copy of the KVM exception vector. This
contains the TLB refill exception handler at offset 0x000, the general
exception handler at offset 0x180, and interrupt exception handlers at
offset 0x200 in case Cause_IV=1. A common handler is copied to offset
0x2000 and offset 0x3000 is used for temporarily storing k1 during entry
from guest.
However the amount of memory allocated for this purpose is calculated as
0x200 rounded up to the next page boundary, which is insufficient if 4KB
pages are in use. This can lead to the common handler at offset 0x2000
being overwritten and infinitely recursive exceptions on the next exit
from the guest.
Increase the minimum size from 0x200 to 0x4000 to cover the full use of
the page.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/kvm/kvm_mips.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -299,7 +299,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(st
if (cpu_has_veic || cpu_has_vint) {
size = 0x200 + VECTORSPACING * 64;
} else {
- size = 0x200;
+ size = 0x4000;
}
/* Save Linux EBASE */
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 30/52] USB: cdc-acm: fix write and suspend race
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (27 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 29/52] MIPS: KVM: Allocate at least 16KB for exception handlers Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 31/52] USB: cdc-acm: fix write and resume race Greg Kroah-Hartman
` (22 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit 5a345c20c17d87099224a4be12e69e5bd7023dca upstream.
Fix race between write() and suspend() which could lead to writes being
dropped (or I/O while suspended) if the device is runtime suspended
while a write request is being processed.
Specifically, suspend() releases the write_lock after determining the
device is idle but before incrementing the susp_count, thus leaving a
window where a concurrent write() can submit an urb.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1434,18 +1434,15 @@ static int acm_suspend(struct usb_interf
struct acm *acm = usb_get_intfdata(intf);
int cnt;
+ spin_lock_irq(&acm->read_lock);
+ spin_lock(&acm->write_lock);
if (PMSG_IS_AUTO(message)) {
- int b;
-
- spin_lock_irq(&acm->write_lock);
- b = acm->transmitting;
- spin_unlock_irq(&acm->write_lock);
- if (b)
+ if (acm->transmitting) {
+ spin_unlock(&acm->write_lock);
+ spin_unlock_irq(&acm->read_lock);
return -EBUSY;
+ }
}
-
- spin_lock_irq(&acm->read_lock);
- spin_lock(&acm->write_lock);
cnt = acm->susp_count++;
spin_unlock(&acm->write_lock);
spin_unlock_irq(&acm->read_lock);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 31/52] USB: cdc-acm: fix write and resume race
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (28 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 30/52] USB: cdc-acm: fix write and suspend race Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 32/52] USB: cdc-acm: fix broken runtime suspend Greg Kroah-Hartman
` (21 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit e144ed28bed10684f9aaec6325ed974d53f76110 upstream.
Fix race between write() and resume() due to improper locking that could
lead to writes being reordered.
Resume must be done atomically and susp_count be protected by the
write_lock in order to prevent racing with write(). This could otherwise
lead to writes being reordered if write() grabs the write_lock after
susp_count is decremented, but before the delayed urb is submitted.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 23 +++++++++--------------
1 file changed, 9 insertions(+), 14 deletions(-)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1461,27 +1461,20 @@ static int acm_resume(struct usb_interfa
struct acm *acm = usb_get_intfdata(intf);
struct acm_wb *wb;
int rv = 0;
- int cnt;
spin_lock_irq(&acm->read_lock);
- acm->susp_count -= 1;
- cnt = acm->susp_count;
- spin_unlock_irq(&acm->read_lock);
+ spin_lock(&acm->write_lock);
- if (cnt)
- return 0;
+ if (--acm->susp_count)
+ goto out;
if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
- rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
+ rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
- spin_lock_irq(&acm->write_lock);
if (acm->delayed_wb) {
wb = acm->delayed_wb;
acm->delayed_wb = NULL;
- spin_unlock_irq(&acm->write_lock);
acm_start_wb(acm, wb);
- } else {
- spin_unlock_irq(&acm->write_lock);
}
/*
@@ -1489,12 +1482,14 @@ static int acm_resume(struct usb_interfa
* do the write path at all cost
*/
if (rv < 0)
- goto err_out;
+ goto out;
- rv = acm_submit_read_urbs(acm, GFP_NOIO);
+ rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
}
+out:
+ spin_unlock(&acm->write_lock);
+ spin_unlock_irq(&acm->read_lock);
-err_out:
return rv;
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 32/52] USB: cdc-acm: fix broken runtime suspend
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (29 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 31/52] USB: cdc-acm: fix write and resume race Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 33/52] USB: cdc-acm: fix runtime PM for control messages Greg Kroah-Hartman
` (20 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Xiao Jin, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit 140cb81ac8c625942a1d695875932c615767a526 upstream.
The current ACM runtime-suspend implementation is broken in several
ways:
Firstly, it buffers only the first write request being made while
suspended -- any further writes are silently dropped.
Secondly, writes being dropped also leak write urbs, which are never
reclaimed (until the device is unbound).
Thirdly, even the single buffered write is not cleared at shutdown
(which may happen before the device is resumed), something which can
lead to another urb leak as well as a PM usage-counter leak.
Fix this by implementing a delayed-write queue using urb anchors and
making sure to discard the queue properly at shutdown.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Reported-by: Xiao Jin <jin.xiao@intel.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 32 ++++++++++++++++++++++----------
drivers/usb/class/cdc-acm.h | 2 +-
2 files changed, 23 insertions(+), 11 deletions(-)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -233,12 +233,9 @@ static int acm_write_start(struct acm *a
acm->susp_count);
usb_autopm_get_interface_async(acm->control);
if (acm->susp_count) {
- if (!acm->delayed_wb)
- acm->delayed_wb = wb;
- else
- usb_autopm_put_interface_async(acm->control);
+ usb_anchor_urb(wb->urb, &acm->delayed);
spin_unlock_irqrestore(&acm->write_lock, flags);
- return 0; /* A white lie */
+ return 0;
}
usb_mark_last_busy(acm->dev);
@@ -591,6 +588,8 @@ static void acm_port_destruct(struct tty
static void acm_port_shutdown(struct tty_port *port)
{
struct acm *acm = container_of(port, struct acm, port);
+ struct urb *urb;
+ struct acm_wb *wb;
int i;
dev_dbg(&acm->control->dev, "%s\n", __func__);
@@ -599,6 +598,16 @@ static void acm_port_shutdown(struct tty
if (!acm->disconnected) {
usb_autopm_get_interface(acm->control);
acm_set_control(acm, acm->ctrlout = 0);
+
+ for (;;) {
+ urb = usb_get_from_anchor(&acm->delayed);
+ if (!urb)
+ break;
+ wb = urb->context;
+ wb->use = 0;
+ usb_autopm_put_interface_async(acm->control);
+ }
+
usb_kill_urb(acm->ctrlurb);
for (i = 0; i < ACM_NW; i++)
usb_kill_urb(acm->wb[i].urb);
@@ -1190,6 +1199,7 @@ made_compressed_probe:
acm->bInterval = epread->bInterval;
tty_port_init(&acm->port);
acm->port.ops = &acm_port_ops;
+ init_usb_anchor(&acm->delayed);
buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
if (!buf) {
@@ -1459,7 +1469,7 @@ static int acm_suspend(struct usb_interf
static int acm_resume(struct usb_interface *intf)
{
struct acm *acm = usb_get_intfdata(intf);
- struct acm_wb *wb;
+ struct urb *urb;
int rv = 0;
spin_lock_irq(&acm->read_lock);
@@ -1471,10 +1481,12 @@ static int acm_resume(struct usb_interfa
if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
- if (acm->delayed_wb) {
- wb = acm->delayed_wb;
- acm->delayed_wb = NULL;
- acm_start_wb(acm, wb);
+ for (;;) {
+ urb = usb_get_from_anchor(&acm->delayed);
+ if (!urb)
+ break;
+
+ acm_start_wb(acm, urb->context);
}
/*
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -117,7 +117,7 @@ struct acm {
unsigned int throttled:1; /* actually throttled */
unsigned int throttle_req:1; /* throttle requested */
u8 bInterval;
- struct acm_wb *delayed_wb; /* write queued for a device about to be woken */
+ struct usb_anchor delayed; /* writes queued for a device about to be woken */
};
#define CDC_DATA_INTERFACE_TYPE 0x0a
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 33/52] USB: cdc-acm: fix runtime PM for control messages
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (30 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 32/52] USB: cdc-acm: fix broken runtime suspend Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 34/52] USB: cdc-acm: fix shutdown and suspend race Greg Kroah-Hartman
` (19 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit bae3f4c53585e9a170da9436e0f06919874bda9a upstream.
Fix runtime PM handling of control messages by adding the required PM
counter operations.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -122,13 +122,23 @@ static void acm_release_minor(struct acm
static int acm_ctrl_msg(struct acm *acm, int request, int value,
void *buf, int len)
{
- int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
+ int retval;
+
+ retval = usb_autopm_get_interface(acm->control);
+ if (retval)
+ return retval;
+
+ retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
request, USB_RT_ACM, value,
acm->control->altsetting[0].desc.bInterfaceNumber,
buf, len, 5000);
+
dev_dbg(&acm->control->dev,
"%s - rq 0x%02x, val %#x, len %#x, result %d\n",
__func__, request, value, len, retval);
+
+ usb_autopm_put_interface(acm->control);
+
return retval < 0 ? retval : 0;
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 34/52] USB: cdc-acm: fix shutdown and suspend race
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (31 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 33/52] USB: cdc-acm: fix runtime PM for control messages Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 35/52] USB: cdc-acm: fix I/O after failed open Greg Kroah-Hartman
` (18 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit ed797074031a37bb9bf4a70952fffc606b77274d upstream.
We should stop I/O unconditionally at suspend rather than rely on the
tty-port initialised flag (which is set prior to stopping I/O during
shutdown) in order to prevent suspend returning with URBs still active.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1470,8 +1470,7 @@ static int acm_suspend(struct usb_interf
if (cnt)
return 0;
- if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
- stop_data_traffic(acm);
+ stop_data_traffic(acm);
return 0;
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 35/52] USB: cdc-acm: fix I/O after failed open
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (32 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 34/52] USB: cdc-acm: fix shutdown and suspend race Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 36/52] USB: cdc-acm: fix runtime PM imbalance at shutdown Greg Kroah-Hartman
` (17 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit e4c36076c2a6195ec62c35b03c3fde84d0087dc8 upstream.
Make sure to kill any already submitted read urbs on read-urb submission
failures in open in order to prevent doing I/O for a closed port.
Fixes: 088c64f81284 ("USB: cdc-acm: re-write read processing")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -523,6 +523,7 @@ static int acm_port_activate(struct tty_
{
struct acm *acm = container_of(port, struct acm, port);
int retval = -ENODEV;
+ int i;
dev_dbg(&acm->control->dev, "%s\n", __func__);
@@ -571,6 +572,8 @@ static int acm_port_activate(struct tty_
return 0;
error_submit_read_urbs:
+ for (i = 0; i < acm->rx_buflimit; i++)
+ usb_kill_urb(acm->read_urbs[i]);
acm->ctrlout = 0;
acm_set_control(acm, acm->ctrlout);
error_set_control:
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 36/52] USB: cdc-acm: fix runtime PM imbalance at shutdown
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (33 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 35/52] USB: cdc-acm: fix I/O after failed open Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 37/52] Drivers: hv: balloon: Ensure pressure reports are posted regularly Greg Kroah-Hartman
` (16 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhovold@gmail.com>
commit 5292afa657d0e790b7479ad8eef9450c1e040b3d upstream.
Make sure only to decrement the PM counters if they were actually
incremented.
Note that the USB PM counter, but not necessarily the driver core PM
counter, is reset when the interface is unbound.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -604,12 +604,13 @@ static void acm_port_shutdown(struct tty
struct urb *urb;
struct acm_wb *wb;
int i;
+ int pm_err;
dev_dbg(&acm->control->dev, "%s\n", __func__);
mutex_lock(&acm->mutex);
if (!acm->disconnected) {
- usb_autopm_get_interface(acm->control);
+ pm_err = usb_autopm_get_interface(acm->control);
acm_set_control(acm, acm->ctrlout = 0);
for (;;) {
@@ -627,7 +628,8 @@ static void acm_port_shutdown(struct tty
for (i = 0; i < acm->rx_buflimit; i++)
usb_kill_urb(acm->read_urbs[i]);
acm->control->needs_remote_wakeup = 0;
- usb_autopm_put_interface(acm->control);
+ if (!pm_err)
+ usb_autopm_put_interface(acm->control);
}
mutex_unlock(&acm->mutex);
}
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 37/52] Drivers: hv: balloon: Ensure pressure reports are posted regularly
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (34 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 36/52] USB: cdc-acm: fix runtime PM imbalance at shutdown Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 38/52] ASoC: max98090: Fix reset at resume time Greg Kroah-Hartman
` (15 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, K. Y. Srinivasan
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "K. Y. Srinivasan" <kys@microsoft.com>
commit ae339336dc950b9b05e7ccd3565dd3e8781c06d9 upstream.
The current code posts periodic memory pressure status from a dedicated thread.
Under some conditions, especially when we are releasing a lot of memory into
the guest, we may not send timely pressure reports back to the host. Fix this
issue by reporting pressure in all contexts that can be active in this driver.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hv/hv_balloon.c | 29 ++++++++++++++++++++++++++---
1 file changed, 26 insertions(+), 3 deletions(-)
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -19,6 +19,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
+#include <linux/jiffies.h>
#include <linux/mman.h>
#include <linux/delay.h>
#include <linux/init.h>
@@ -459,6 +460,11 @@ static bool do_hot_add;
*/
static uint pressure_report_delay = 45;
+/*
+ * The last time we posted a pressure report to host.
+ */
+static unsigned long last_post_time;
+
module_param(hot_add, bool, (S_IRUGO | S_IWUSR));
MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
@@ -542,6 +548,7 @@ struct hv_dynmem_device {
static struct hv_dynmem_device dm_device;
+static void post_status(struct hv_dynmem_device *dm);
#ifdef CONFIG_MEMORY_HOTPLUG
static void hv_bring_pgs_online(unsigned long start_pfn, unsigned long size)
@@ -612,7 +619,7 @@ static void hv_mem_hot_add(unsigned long
* have not been "onlined" within the allowed time.
*/
wait_for_completion_timeout(&dm_device.ol_waitevent, 5*HZ);
-
+ post_status(&dm_device);
}
return;
@@ -951,11 +958,17 @@ static void post_status(struct hv_dynmem
{
struct dm_status status;
struct sysinfo val;
+ unsigned long now = jiffies;
+ unsigned long last_post = last_post_time;
if (pressure_report_delay > 0) {
--pressure_report_delay;
return;
}
+
+ if (!time_after(now, (last_post_time + HZ)))
+ return;
+
si_meminfo(&val);
memset(&status, 0, sizeof(struct dm_status));
status.hdr.type = DM_STATUS_REPORT;
@@ -983,6 +996,14 @@ static void post_status(struct hv_dynmem
if (status.hdr.trans_id != atomic_read(&trans_id))
return;
+ /*
+ * If the last post time that we sampled has changed,
+ * we have raced, don't post the status.
+ */
+ if (last_post != last_post_time)
+ return;
+
+ last_post_time = jiffies;
vmbus_sendpacket(dm->dev->channel, &status,
sizeof(struct dm_status),
(unsigned long)NULL,
@@ -1117,7 +1138,7 @@ static void balloon_up(struct work_struc
if (ret == -EAGAIN)
msleep(20);
-
+ post_status(&dm_device);
} while (ret == -EAGAIN);
if (ret) {
@@ -1144,8 +1165,10 @@ static void balloon_down(struct hv_dynme
struct dm_unballoon_response resp;
int i;
- for (i = 0; i < range_count; i++)
+ for (i = 0; i < range_count; i++) {
free_balloon_pages(dm, &range_array[i]);
+ post_status(&dm_device);
+ }
if (req->more_pages == 1)
return;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 38/52] ASoC: max98090: Fix reset at resume time
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (35 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 37/52] Drivers: hv: balloon: Ensure pressure reports are posted regularly Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 39/52] iio:adc:max1363 incorrect resolutions for max11604, max11605, max11610 and max11611 Greg Kroah-Hartman
` (14 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Liam Girdwood, Jarkko Nikula, Mark Brown
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Liam Girdwood <liam.r.girdwood@linux.intel.com>
commit 25b4ab430f8e166c9b63f4db28e7e812d5a59396 upstream.
Reset needs to wait 20ms before other codec IO is performed. This wait
was not being performed. Fix this by making sure the reset register is not
restored with the cache, but use the manual reset method in resume with
the wait.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/codecs/max98090.c | 3 +++
1 file changed, 3 insertions(+)
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -255,6 +255,7 @@ static struct reg_default max98090_reg[]
static bool max98090_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
+ case M98090_REG_SOFTWARE_RESET:
case M98090_REG_DEVICE_STATUS:
case M98090_REG_JACK_STATUS:
case M98090_REG_REVISION_ID:
@@ -2343,6 +2344,8 @@ static int max98090_runtime_resume(struc
regcache_cache_only(max98090->regmap, false);
+ max98090_reset(max98090);
+
regcache_sync(max98090->regmap);
return 0;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 39/52] iio:adc:max1363 incorrect resolutions for max11604, max11605, max11610 and max11611.
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (36 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 38/52] ASoC: max98090: Fix reset at resume time Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 40/52] staging: iio: tsl2x7x_core: fix proximity treshold Greg Kroah-Hartman
` (13 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Erik Habbinga, Jonathan Cameron,
Hartmut Knaack
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jonathan Cameron <jic23@kernel.org>
commit a91a73c8b39a6b8bcc53fafa5372c65387c81233 upstream.
Reported-by: Erik Habbinga <Erik.Habbinga@schneider-electric.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iio/adc/max1363.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -1214,8 +1214,8 @@ static const struct max1363_chip_info ma
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
.info = &max1238_info,
- .channels = max1238_channels,
- .num_channels = ARRAY_SIZE(max1238_channels),
+ .channels = max1038_channels,
+ .num_channels = ARRAY_SIZE(max1038_channels),
},
[max11605] = {
.bits = 8,
@@ -1224,8 +1224,8 @@ static const struct max1363_chip_info ma
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
.info = &max1238_info,
- .channels = max1238_channels,
- .num_channels = ARRAY_SIZE(max1238_channels),
+ .channels = max1038_channels,
+ .num_channels = ARRAY_SIZE(max1038_channels),
},
[max11606] = {
.bits = 10,
@@ -1274,8 +1274,8 @@ static const struct max1363_chip_info ma
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
.info = &max1238_info,
- .channels = max1238_channels,
- .num_channels = ARRAY_SIZE(max1238_channels),
+ .channels = max1138_channels,
+ .num_channels = ARRAY_SIZE(max1138_channels),
},
[max11611] = {
.bits = 10,
@@ -1284,8 +1284,8 @@ static const struct max1363_chip_info ma
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
.info = &max1238_info,
- .channels = max1238_channels,
- .num_channels = ARRAY_SIZE(max1238_channels),
+ .channels = max1138_channels,
+ .num_channels = ARRAY_SIZE(max1138_channels),
},
[max11612] = {
.bits = 12,
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 40/52] staging: iio: tsl2x7x_core: fix proximity treshold
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (37 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 39/52] iio:adc:max1363 incorrect resolutions for max11604, max11605, max11610 and max11611 Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 41/52] iio: adc: at91: signedness bug in at91_adc_get_trigger_value_by_name() Greg Kroah-Hartman
` (12 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Mario Schuknecht, Jonathan Cameron
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
commit c404618cd06dad771495fe1cf9d5a63b5664f65f upstream.
Consider high byte of proximity min and max treshold in function
'tsl2x7x_chip_on'. So far, the high byte was not set.
Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/iio/light/tsl2x7x_core.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/staging/iio/light/tsl2x7x_core.c
+++ b/drivers/staging/iio/light/tsl2x7x_core.c
@@ -672,9 +672,13 @@ static int tsl2x7x_chip_on(struct iio_de
chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] =
chip->tsl2x7x_settings.prox_pulse_count;
chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] =
- chip->tsl2x7x_settings.prox_thres_low;
+ (chip->tsl2x7x_settings.prox_thres_low) & 0xFF;
+ chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] =
+ (chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF;
chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
- chip->tsl2x7x_settings.prox_thres_high;
+ (chip->tsl2x7x_settings.prox_thres_high) & 0xFF;
+ chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] =
+ (chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF;
/* and make sure we're not already on */
if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 41/52] iio: adc: at91: signedness bug in at91_adc_get_trigger_value_by_name()
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (38 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 40/52] staging: iio: tsl2x7x_core: fix proximity treshold Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 42/52] iio: Fix endianness issue in ak8975_read_axis() Greg Kroah-Hartman
` (11 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Alexandre Belloni,
Jonathan Cameron
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@oracle.com>
commit 4f3bcd878f1d3c730fe00f619b7260c6125d49eb upstream.
at91_adc_get_trigger_value_by_name() was returning -ENOMEM truncated to
a positive u8 and that doesn't work. I've changed it to int and
refactored it to preserve the error code.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iio/adc/at91_adc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -161,12 +161,11 @@ static int at91_adc_channel_init(struct
return idev->num_channels;
}
-static u8 at91_adc_get_trigger_value_by_name(struct iio_dev *idev,
+static int at91_adc_get_trigger_value_by_name(struct iio_dev *idev,
struct at91_adc_trigger *triggers,
const char *trigger_name)
{
struct at91_adc_state *st = iio_priv(idev);
- u8 value = 0;
int i;
for (i = 0; i < st->trigger_number; i++) {
@@ -179,15 +178,16 @@ static u8 at91_adc_get_trigger_value_by_
return -ENOMEM;
if (strcmp(trigger_name, name) == 0) {
- value = triggers[i].value;
kfree(name);
- break;
+ if (triggers[i].value == 0)
+ return -EINVAL;
+ return triggers[i].value;
}
kfree(name);
}
- return value;
+ return -EINVAL;
}
static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
@@ -197,14 +197,14 @@ static int at91_adc_configure_trigger(st
struct iio_buffer *buffer = idev->buffer;
struct at91_adc_reg_desc *reg = st->registers;
u32 status = at91_adc_readl(st, reg->trigger_register);
- u8 value;
+ int value;
u8 bit;
value = at91_adc_get_trigger_value_by_name(idev,
st->trigger_list,
idev->trig->name);
- if (value == 0)
- return -EINVAL;
+ if (value < 0)
+ return value;
if (state) {
st->buffer = kmalloc(idev->scan_bytes, GFP_KERNEL);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 42/52] iio: Fix endianness issue in ak8975_read_axis()
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (39 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 41/52] iio: adc: at91: signedness bug in at91_adc_get_trigger_value_by_name() Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 43/52] lzo: properly check for overruns Greg Kroah-Hartman
` (10 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Peter Meerwald, Jonathan Cameron
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Meerwald <pmeerw@pmeerw.net>
commit 8ba42fb7b17649c9ab5b5e79d4e90370a0b4645e upstream.
i2c_smbus_read_word_data() does host endian conversion already,
no need for le16_to_cpu()
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iio/magnetometer/ak8975.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -276,8 +276,6 @@ static int ak8975_read_axis(struct iio_d
{
struct ak8975_data *data = iio_priv(indio_dev);
struct i2c_client *client = data->client;
- u16 meas_reg;
- s16 raw;
int ret;
mutex_lock(&data->lock);
@@ -322,16 +320,11 @@ static int ak8975_read_axis(struct iio_d
dev_err(&client->dev, "Read axis data fails\n");
goto exit;
}
- meas_reg = ret;
mutex_unlock(&data->lock);
- /* Endian conversion of the measured values. */
- raw = (s16) (le16_to_cpu(meas_reg));
-
/* Clamp to valid range. */
- raw = clamp_t(s16, raw, -4096, 4095);
- *val = raw;
+ *val = clamp_t(s16, ret, -4096, 4095);
return IIO_VAL_INT;
exit:
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 43/52] lzo: properly check for overruns
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (40 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 42/52] iio: Fix endianness issue in ak8975_read_axis() Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:50 ` [PATCH 3.10 44/52] nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off Greg Kroah-Hartman
` (9 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Don A. Bailey
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 206a81c18401c0cde6e579164f752c4b147324ce upstream.
The lzo decompressor can, if given some really crazy data, possibly
overrun some variable types. Modify the checking logic to properly
detect overruns before they happen.
Reported-by: "Don A. Bailey" <donb@securitymouse.com>
Tested-by: "Don A. Bailey" <donb@securitymouse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/lzo/lzo1x_decompress_safe.c | 62 ++++++++++++++++++++++++++--------------
1 file changed, 41 insertions(+), 21 deletions(-)
--- a/lib/lzo/lzo1x_decompress_safe.c
+++ b/lib/lzo/lzo1x_decompress_safe.c
@@ -19,11 +19,31 @@
#include <linux/lzo.h>
#include "lzodefs.h"
-#define HAVE_IP(x) ((size_t)(ip_end - ip) >= (size_t)(x))
-#define HAVE_OP(x) ((size_t)(op_end - op) >= (size_t)(x))
-#define NEED_IP(x) if (!HAVE_IP(x)) goto input_overrun
-#define NEED_OP(x) if (!HAVE_OP(x)) goto output_overrun
-#define TEST_LB(m_pos) if ((m_pos) < out) goto lookbehind_overrun
+#define HAVE_IP(t, x) \
+ (((size_t)(ip_end - ip) >= (size_t)(t + x)) && \
+ (((t + x) >= t) && ((t + x) >= x)))
+
+#define HAVE_OP(t, x) \
+ (((size_t)(op_end - op) >= (size_t)(t + x)) && \
+ (((t + x) >= t) && ((t + x) >= x)))
+
+#define NEED_IP(t, x) \
+ do { \
+ if (!HAVE_IP(t, x)) \
+ goto input_overrun; \
+ } while (0)
+
+#define NEED_OP(t, x) \
+ do { \
+ if (!HAVE_OP(t, x)) \
+ goto output_overrun; \
+ } while (0)
+
+#define TEST_LB(m_pos) \
+ do { \
+ if ((m_pos) < out) \
+ goto lookbehind_overrun; \
+ } while (0)
int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
unsigned char *out, size_t *out_len)
@@ -58,14 +78,14 @@ int lzo1x_decompress_safe(const unsigned
while (unlikely(*ip == 0)) {
t += 255;
ip++;
- NEED_IP(1);
+ NEED_IP(1, 0);
}
t += 15 + *ip++;
}
t += 3;
copy_literal_run:
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
- if (likely(HAVE_IP(t + 15) && HAVE_OP(t + 15))) {
+ if (likely(HAVE_IP(t, 15) && HAVE_OP(t, 15))) {
const unsigned char *ie = ip + t;
unsigned char *oe = op + t;
do {
@@ -81,8 +101,8 @@ copy_literal_run:
} else
#endif
{
- NEED_OP(t);
- NEED_IP(t + 3);
+ NEED_OP(t, 0);
+ NEED_IP(t, 3);
do {
*op++ = *ip++;
} while (--t > 0);
@@ -95,7 +115,7 @@ copy_literal_run:
m_pos -= t >> 2;
m_pos -= *ip++ << 2;
TEST_LB(m_pos);
- NEED_OP(2);
+ NEED_OP(2, 0);
op[0] = m_pos[0];
op[1] = m_pos[1];
op += 2;
@@ -119,10 +139,10 @@ copy_literal_run:
while (unlikely(*ip == 0)) {
t += 255;
ip++;
- NEED_IP(1);
+ NEED_IP(1, 0);
}
t += 31 + *ip++;
- NEED_IP(2);
+ NEED_IP(2, 0);
}
m_pos = op - 1;
next = get_unaligned_le16(ip);
@@ -137,10 +157,10 @@ copy_literal_run:
while (unlikely(*ip == 0)) {
t += 255;
ip++;
- NEED_IP(1);
+ NEED_IP(1, 0);
}
t += 7 + *ip++;
- NEED_IP(2);
+ NEED_IP(2, 0);
}
next = get_unaligned_le16(ip);
ip += 2;
@@ -154,7 +174,7 @@ copy_literal_run:
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
if (op - m_pos >= 8) {
unsigned char *oe = op + t;
- if (likely(HAVE_OP(t + 15))) {
+ if (likely(HAVE_OP(t, 15))) {
do {
COPY8(op, m_pos);
op += 8;
@@ -164,7 +184,7 @@ copy_literal_run:
m_pos += 8;
} while (op < oe);
op = oe;
- if (HAVE_IP(6)) {
+ if (HAVE_IP(6, 0)) {
state = next;
COPY4(op, ip);
op += next;
@@ -172,7 +192,7 @@ copy_literal_run:
continue;
}
} else {
- NEED_OP(t);
+ NEED_OP(t, 0);
do {
*op++ = *m_pos++;
} while (op < oe);
@@ -181,7 +201,7 @@ copy_literal_run:
#endif
{
unsigned char *oe = op + t;
- NEED_OP(t);
+ NEED_OP(t, 0);
op[0] = m_pos[0];
op[1] = m_pos[1];
op += 2;
@@ -194,15 +214,15 @@ match_next:
state = next;
t = next;
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
- if (likely(HAVE_IP(6) && HAVE_OP(4))) {
+ if (likely(HAVE_IP(6, 0) && HAVE_OP(4, 0))) {
COPY4(op, ip);
op += t;
ip += t;
} else
#endif
{
- NEED_IP(t + 3);
- NEED_OP(t);
+ NEED_IP(t, 3);
+ NEED_OP(t, 0);
while (t > 0) {
*op++ = *ip++;
t--;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 44/52] nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (41 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 43/52] lzo: properly check for overruns Greg Kroah-Hartman
@ 2014-06-24 15:50 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 45/52] ALSA: compress: Cancel the optimization of compiler and fix the size of struct for all platform Greg Kroah-Hartman
` (8 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:50 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Michal Hocko, Borislav Petkov,
Thomas Gleixner, Rui Xiang
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Gleixner <tglx@linutronix.de>
commit 0e576acbc1d9600cf2d9b4a141a2554639959d50 upstream.
If CONFIG_NO_HZ=n tick_nohz_get_sleep_length() returns NSEC_PER_SEC/HZ.
If CONFIG_NO_HZ=y and the nohz functionality is disabled via the
command line option "nohz=off" or not enabled due to missing hardware
support, then tick_nohz_get_sleep_length() returns 0. That happens
because ts->sleep_length is never set in that case.
Set it to NSEC_PER_SEC/HZ when the NOHZ mode is inactive.
Reported-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Rui Xiang <rui.xiang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/time/tick-sched.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -720,8 +720,10 @@ static bool can_stop_idle_tick(int cpu,
return false;
}
- if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE))
+ if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE)) {
+ ts->sleep_length = (ktime_t) { .tv64 = NSEC_PER_SEC/HZ };
return false;
+ }
if (need_resched())
return false;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 45/52] ALSA: compress: Cancel the optimization of compiler and fix the size of struct for all platform.
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (42 preceding siblings ...)
2014-06-24 15:50 ` [PATCH 3.10 44/52] nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 46/52] ALSA: hda/realtek - Add support of ALC891 codec Greg Kroah-Hartman
` (7 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Zhang Dongxing, xiaoming wang,
Vinod Koul, Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Wang, Xiaoming" <xiaoming.wang@intel.com>
commit 2bd0ae464a6cf7363bbf72c8545e0aa43caa57f0 upstream.
Cancel the optimization of compiler for struct snd_compr_avail
which size will be 0x1c in 32bit kernel while 0x20 in 64bit
kernel under the optimizer. That will make compaction between
32bit and 64bit. So add packed to fix the size of struct
snd_compr_avail to 0x1c for all platform.
Signed-off-by: Zhang Dongxing <dongxing.zhang@intel.com>
Signed-off-by: xiaoming wang <xiaoming.wang@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/uapi/sound/compress_offload.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/uapi/sound/compress_offload.h
+++ b/include/uapi/sound/compress_offload.h
@@ -80,7 +80,7 @@ struct snd_compr_tstamp {
struct snd_compr_avail {
__u64 avail;
struct snd_compr_tstamp tstamp;
-};
+} __attribute__((packed));
enum snd_compr_direction {
SND_COMPRESS_PLAYBACK = 0,
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 46/52] ALSA: hda/realtek - Add support of ALC891 codec
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (43 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 45/52] ALSA: compress: Cancel the optimization of compiler and fix the size of struct for all platform Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 48/52] ALSA: control: Protect user controls against concurrent access Greg Kroah-Hartman
` (6 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Kailang Yang, Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kailang Yang <kailang@realtek.com>
commit b6c5fbad16aa5026f508093a8d651c25e1cb6179 upstream.
New codec support for ALC891.
Signed-off-by: Kailang Yang <kailang@realtek.com>
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
@@ -4664,6 +4664,7 @@ static const struct hda_codec_preset snd
{ .id = 0x10ec0670, .name = "ALC670", .patch = patch_alc662 },
{ .id = 0x10ec0671, .name = "ALC671", .patch = patch_alc662 },
{ .id = 0x10ec0680, .name = "ALC680", .patch = patch_alc680 },
+ { .id = 0x10ec0867, .name = "ALC891", .patch = patch_alc882 },
{ .id = 0x10ec0880, .name = "ALC880", .patch = patch_alc880 },
{ .id = 0x10ec0882, .name = "ALC882", .patch = patch_alc882 },
{ .id = 0x10ec0883, .name = "ALC883", .patch = patch_alc882 },
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 48/52] ALSA: control: Protect user controls against concurrent access
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (44 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 46/52] ALSA: hda/realtek - Add support of ALC891 codec Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 49/52] ALSA: control: Fix replacing user controls Greg Kroah-Hartman
` (5 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Lars-Peter Clausen, Jaroslav Kysela,
Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit 07f4d9d74a04aa7c72c5dae0ef97565f28f17b92 upstream.
The user-control put and get handlers as well as the tlv do not protect against
concurrent access from multiple threads. Since the state of the control is not
updated atomically it is possible that either two write operations or a write
and a read operation race against each other. Both can lead to arbitrary memory
disclosure. This patch introduces a new lock that protects user-controls from
concurrent access. Since applications typically access controls sequentially
than in parallel a single lock per card should be fine.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/sound/core.h | 2 ++
sound/core/control.c | 31 +++++++++++++++++++++++++------
sound/core/init.c | 1 +
3 files changed, 28 insertions(+), 6 deletions(-)
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -120,6 +120,8 @@ struct snd_card {
int user_ctl_count; /* count of all user controls */
struct list_head controls; /* all controls for this card */
struct list_head ctl_files; /* active control files */
+ struct mutex user_ctl_lock; /* protects user controls against
+ concurrent access */
struct snd_info_entry *proc_root; /* root for soundcard specific files */
struct snd_info_entry *proc_id; /* the card id */
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -992,6 +992,7 @@ static int snd_ctl_elem_unlock(struct sn
struct user_element {
struct snd_ctl_elem_info info;
+ struct snd_card *card;
void *elem_data; /* element data */
unsigned long elem_data_size; /* size of element data in bytes */
void *tlv_data; /* TLV data */
@@ -1035,7 +1036,9 @@ static int snd_ctl_elem_user_get(struct
{
struct user_element *ue = kcontrol->private_data;
+ mutex_lock(&ue->card->user_ctl_lock);
memcpy(&ucontrol->value, ue->elem_data, ue->elem_data_size);
+ mutex_unlock(&ue->card->user_ctl_lock);
return 0;
}
@@ -1044,10 +1047,12 @@ static int snd_ctl_elem_user_put(struct
{
int change;
struct user_element *ue = kcontrol->private_data;
-
+
+ mutex_lock(&ue->card->user_ctl_lock);
change = memcmp(&ucontrol->value, ue->elem_data, ue->elem_data_size) != 0;
if (change)
memcpy(ue->elem_data, &ucontrol->value, ue->elem_data_size);
+ mutex_unlock(&ue->card->user_ctl_lock);
return change;
}
@@ -1067,19 +1072,32 @@ static int snd_ctl_elem_user_tlv(struct
new_data = memdup_user(tlv, size);
if (IS_ERR(new_data))
return PTR_ERR(new_data);
+ mutex_lock(&ue->card->user_ctl_lock);
change = ue->tlv_data_size != size;
if (!change)
change = memcmp(ue->tlv_data, new_data, size);
kfree(ue->tlv_data);
ue->tlv_data = new_data;
ue->tlv_data_size = size;
+ mutex_unlock(&ue->card->user_ctl_lock);
} else {
- if (! ue->tlv_data_size || ! ue->tlv_data)
- return -ENXIO;
- if (size < ue->tlv_data_size)
- return -ENOSPC;
+ int ret = 0;
+
+ mutex_lock(&ue->card->user_ctl_lock);
+ if (!ue->tlv_data_size || !ue->tlv_data) {
+ ret = -ENXIO;
+ goto err_unlock;
+ }
+ if (size < ue->tlv_data_size) {
+ ret = -ENOSPC;
+ goto err_unlock;
+ }
if (copy_to_user(tlv, ue->tlv_data, ue->tlv_data_size))
- return -EFAULT;
+ ret = -EFAULT;
+err_unlock:
+ mutex_unlock(&ue->card->user_ctl_lock);
+ if (ret)
+ return ret;
}
return change;
}
@@ -1211,6 +1229,7 @@ static int snd_ctl_elem_add(struct snd_c
ue = kzalloc(sizeof(struct user_element) + private_size, GFP_KERNEL);
if (ue == NULL)
return -ENOMEM;
+ ue->card = card;
ue->info = *info;
ue->info.access = 0;
ue->elem_data = (char *)ue + sizeof(*ue);
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -208,6 +208,7 @@ int snd_card_create(int idx, const char
INIT_LIST_HEAD(&card->devices);
init_rwsem(&card->controls_rwsem);
rwlock_init(&card->ctl_files_rwlock);
+ mutex_init(&card->user_ctl_lock);
INIT_LIST_HEAD(&card->controls);
INIT_LIST_HEAD(&card->ctl_files);
spin_lock_init(&card->files_lock);
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 49/52] ALSA: control: Fix replacing user controls
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (45 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 48/52] ALSA: control: Protect user controls against concurrent access Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 50/52] ALSA: control: Dont access controls outside of protected regions Greg Kroah-Hartman
` (4 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Lars-Peter Clausen, Jaroslav Kysela,
Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit 82262a46627bebb0febcc26664746c25cef08563 upstream.
There are two issues with the current implementation for replacing user
controls. The first is that the code does not check if the control is actually a
user control and neither does it check if the control is owned by the process
that tries to remove it. That allows userspace applications to remove arbitrary
controls, which can cause a user after free if a for example a driver does not
expect a control to be removed from under its feed.
The second issue is that on one hand when a control is replaced the
user_ctl_count limit is not checked and on the other hand the user_ctl_count is
increased (even though the number of user controls does not change). This allows
userspace, once the user_ctl_count limit as been reached, to repeatedly replace
a control until user_ctl_count overflows. Once that happens new controls can be
added effectively bypassing the user_ctl_count limit.
Both issues can be fixed by instead of open-coding the removal of the control
that is to be replaced to use snd_ctl_remove_user_ctl(). This function does
proper permission checks as well as decrements user_ctl_count after the control
has been removed.
Note that by using snd_ctl_remove_user_ctl() the check which returns -EBUSY at
beginning of the function if the control already exists is removed. This is not
a problem though since the check is quite useless, because the lock that is
protecting the control list is released between the check and before adding the
new control to the list, which means that it is possible that a different
control with the same settings is added to the list after the check. Luckily
there is another check that is done while holding the lock in snd_ctl_add(), so
we'll rely on that to make sure that the same control is not added twice.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/control.c | 25 +++++++++----------------
1 file changed, 9 insertions(+), 16 deletions(-)
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1155,8 +1155,6 @@ static int snd_ctl_elem_add(struct snd_c
struct user_element *ue;
int idx, err;
- if (!replace && card->user_ctl_count >= MAX_USER_CONTROLS)
- return -ENOMEM;
if (info->count < 1)
return -EINVAL;
access = info->access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE :
@@ -1165,21 +1163,16 @@ static int snd_ctl_elem_add(struct snd_c
SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE));
info->id.numid = 0;
memset(&kctl, 0, sizeof(kctl));
- down_write(&card->controls_rwsem);
- _kctl = snd_ctl_find_id(card, &info->id);
- err = 0;
- if (_kctl) {
- if (replace)
- err = snd_ctl_remove(card, _kctl);
- else
- err = -EBUSY;
- } else {
- if (replace)
- err = -ENOENT;
+
+ if (replace) {
+ err = snd_ctl_remove_user_ctl(file, &info->id);
+ if (err)
+ return err;
}
- up_write(&card->controls_rwsem);
- if (err < 0)
- return err;
+
+ if (card->user_ctl_count >= MAX_USER_CONTROLS)
+ return -ENOMEM;
+
memcpy(&kctl.id, &info->id, sizeof(info->id));
kctl.count = info->owner ? info->owner : 1;
access |= SNDRV_CTL_ELEM_ACCESS_USER;
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 50/52] ALSA: control: Dont access controls outside of protected regions
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (46 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 49/52] ALSA: control: Fix replacing user controls Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 51/52] ALSA: control: Handle numid overflow Greg Kroah-Hartman
` (3 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Lars-Peter Clausen, Jaroslav Kysela,
Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit fd9f26e4eca5d08a27d12c0933fceef76ed9663d upstream.
A control that is visible on the card->controls list can be freed at any time.
This means we must not access any of its memory while not holding the
controls_rw_lock. Otherwise we risk a use after free access.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/control.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -331,6 +331,7 @@ int snd_ctl_add(struct snd_card *card, s
{
struct snd_ctl_elem_id id;
unsigned int idx;
+ unsigned int count;
int err = -EINVAL;
if (! kcontrol)
@@ -359,8 +360,9 @@ int snd_ctl_add(struct snd_card *card, s
card->controls_count += kcontrol->count;
kcontrol->id.numid = card->last_numid + 1;
card->last_numid += kcontrol->count;
+ count = kcontrol->count;
up_write(&card->controls_rwsem);
- for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++)
+ for (idx = 0; idx < count; idx++, id.index++, id.numid++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id);
return 0;
@@ -389,6 +391,7 @@ int snd_ctl_replace(struct snd_card *car
bool add_on_replace)
{
struct snd_ctl_elem_id id;
+ unsigned int count;
unsigned int idx;
struct snd_kcontrol *old;
int ret;
@@ -424,8 +427,9 @@ add:
card->controls_count += kcontrol->count;
kcontrol->id.numid = card->last_numid + 1;
card->last_numid += kcontrol->count;
+ count = kcontrol->count;
up_write(&card->controls_rwsem);
- for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++)
+ for (idx = 0; idx < count; idx++, id.index++, id.numid++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id);
return 0;
@@ -898,9 +902,9 @@ static int snd_ctl_elem_write(struct snd
result = kctl->put(kctl, control);
}
if (result > 0) {
+ struct snd_ctl_elem_id id = control->id;
up_read(&card->controls_rwsem);
- snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
- &control->id);
+ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &id);
return 0;
}
}
@@ -1334,8 +1338,9 @@ static int snd_ctl_tlv_ioctl(struct snd_
}
err = kctl->tlv.c(kctl, op_flag, tlv.length, _tlv->tlv);
if (err > 0) {
+ struct snd_ctl_elem_id id = kctl->id;
up_read(&card->controls_rwsem);
- snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_TLV, &kctl->id);
+ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_TLV, &id);
return 0;
}
} else {
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 51/52] ALSA: control: Handle numid overflow
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (47 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 50/52] ALSA: control: Dont access controls outside of protected regions Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 15:51 ` [PATCH 3.10 52/52] ALSA: control: Make sure that id->index does not overflow Greg Kroah-Hartman
` (2 subsequent siblings)
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Lars-Peter Clausen, Jaroslav Kysela,
Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit ac902c112d90a89e59916f751c2745f4dbdbb4bd upstream.
Each control gets automatically assigned its numids when the control is created.
The allocation is done by incrementing the numid by the amount of allocated
numids per allocation. This means that excessive creation and destruction of
controls (e.g. via SNDRV_CTL_IOCTL_ELEM_ADD/REMOVE) can cause the id to
eventually overflow. Currently when this happens for the control that caused the
overflow kctl->id.numid + kctl->count will also over flow causing it to be
smaller than kctl->id.numid. Most of the code assumes that this is something
that can not happen, so we need to make sure that it won't happen
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/control.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -289,6 +289,10 @@ static bool snd_ctl_remove_numid_conflic
{
struct snd_kcontrol *kctl;
+ /* Make sure that the ids assigned to the control do not wrap around */
+ if (card->last_numid >= UINT_MAX - count)
+ card->last_numid = 0;
+
list_for_each_entry(kctl, &card->controls, list) {
if (kctl->id.numid < card->last_numid + 1 + count &&
kctl->id.numid + kctl->count > card->last_numid + 1) {
^ permalink raw reply [flat|nested] 58+ messages in thread* [PATCH 3.10 52/52] ALSA: control: Make sure that id->index does not overflow
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (48 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 51/52] ALSA: control: Handle numid overflow Greg Kroah-Hartman
@ 2014-06-24 15:51 ` Greg Kroah-Hartman
2014-06-24 19:48 ` [PATCH 3.10 00/52] 3.10.45-stable review Shuah Khan
2014-06-24 23:27 ` Guenter Roeck
51 siblings, 0 replies; 58+ messages in thread
From: Greg Kroah-Hartman @ 2014-06-24 15:51 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Lars-Peter Clausen, Jaroslav Kysela,
Takashi Iwai
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit 883a1d49f0d77d30012f114b2e19fc141beb3e8e upstream.
The ALSA control code expects that the range of assigned indices to a control is
continuous and does not overflow. Currently there are no checks to enforce this.
If a control with a overflowing index range is created that control becomes
effectively inaccessible and unremovable since snd_ctl_find_id() will not be
able to find it. This patch adds a check that makes sure that controls with a
overflowing index range can not be created.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/control.c | 3 +++
1 file changed, 3 insertions(+)
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -343,6 +343,9 @@ int snd_ctl_add(struct snd_card *card, s
if (snd_BUG_ON(!card || !kcontrol->info))
goto error;
id = kcontrol->id;
+ if (id.index > UINT_MAX - kcontrol->count)
+ goto error;
+
down_write(&card->controls_rwsem);
if (snd_ctl_find_id(card, &id)) {
up_write(&card->controls_rwsem);
^ permalink raw reply [flat|nested] 58+ messages in thread* Re: [PATCH 3.10 00/52] 3.10.45-stable review
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (49 preceding siblings ...)
2014-06-24 15:51 ` [PATCH 3.10 52/52] ALSA: control: Make sure that id->index does not overflow Greg Kroah-Hartman
@ 2014-06-24 19:48 ` Shuah Khan
2014-06-24 23:27 ` Guenter Roeck
51 siblings, 0 replies; 58+ messages in thread
From: Shuah Khan @ 2014-06-24 19:48 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel
Cc: torvalds, akpm, linux, satoru.takeuchi, stable, shuah Khan
On 06/24/2014 09:50 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 3.10.45 release.
> There are 52 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 Thu Jun 26 15:46:59 UTC 2014.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> kernel.org/pub/linux/kernel/v3.0/stable-review/patch-3.10.45-rc1.gz
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
>
Compiled and booted on my test system. No dmesg regressions.
-- Shuah
--
Shuah Khan
Senior Linux Kernel Developer - Open Source Group
Samsung Research America(Silicon Valley)
shuah.kh@samsung.com | (970) 672-0658
^ permalink raw reply [flat|nested] 58+ messages in thread* Re: [PATCH 3.10 00/52] 3.10.45-stable review
2014-06-24 15:50 [PATCH 3.10 00/52] 3.10.45-stable review Greg Kroah-Hartman
` (50 preceding siblings ...)
2014-06-24 19:48 ` [PATCH 3.10 00/52] 3.10.45-stable review Shuah Khan
@ 2014-06-24 23:27 ` Guenter Roeck
51 siblings, 0 replies; 58+ messages in thread
From: Guenter Roeck @ 2014-06-24 23:27 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel
Cc: torvalds, akpm, satoru.takeuchi, shuah.kh, stable
On 06/24/2014 08:50 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 3.10.45 release.
> There are 52 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 Thu Jun 26 15:46:59 UTC 2014.
> Anything received after that time might be too late.
>
Build results:
total: 144 pass: 136 skipped: 6 fail: 2
Failed builds:
score:defconfig
unicore32:defconfig
Qemu tests all passed.
Results are as expected. As mentioned before, score:defconfig is new in the list,
passes from 3.12, and the fixes are isolated, so it should be possible to backport
the necessary patches to 3.10 if desired. unicore32:defconfig passes with 3.16-rc2.
Again, it should be straightforward to backport the necessary patches to 3.10
if so desired.
Details are available at http://server.roeck-us.net:8010/builders.
Guenter
^ permalink raw reply [flat|nested] 58+ messages in thread