From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Mike Snitzer <snitzer@redhat.com>,
Kent Overstreet <kent.overstreet@gmail.com>,
Jens Axboe <axboe@kernel.dk>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.9 04/62] dm: Use kzalloc for all structs with embedded biosets/mempools
Date: Mon, 4 Nov 2019 22:44:26 +0100 [thread overview]
Message-ID: <20191104211906.868583856@linuxfoundation.org> (raw)
In-Reply-To: <20191104211901.387893698@linuxfoundation.org>
From: Kent Overstreet <kent.overstreet@gmail.com>
[ Upstream commit d377535405686f735b90a8ad4ba269484cd7c96e ]
mempool_init()/bioset_init() require that the mempools/biosets be zeroed
first; they probably should not _require_ this, but not allocating those
structs with kzalloc is a fairly nonsensical thing to do (calling
mempool_exit()/bioset_exit() on an uninitialized mempool/bioset is legal
and safe, but only works if said memory was zeroed.)
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/md/dm-bio-prison.c | 2 +-
drivers/md/dm-io.c | 2 +-
drivers/md/dm-kcopyd.c | 2 +-
drivers/md/dm-region-hash.c | 2 +-
drivers/md/dm-snap.c | 2 +-
drivers/md/dm-thin.c | 2 +-
6 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/md/dm-bio-prison.c b/drivers/md/dm-bio-prison.c
index 03af174485d30..fa2432a89bace 100644
--- a/drivers/md/dm-bio-prison.c
+++ b/drivers/md/dm-bio-prison.c
@@ -32,7 +32,7 @@ static struct kmem_cache *_cell_cache;
*/
struct dm_bio_prison *dm_bio_prison_create(void)
{
- struct dm_bio_prison *prison = kmalloc(sizeof(*prison), GFP_KERNEL);
+ struct dm_bio_prison *prison = kzalloc(sizeof(*prison), GFP_KERNEL);
if (!prison)
return NULL;
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index ee6045d6c0bb3..201d90f5d1b3b 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -50,7 +50,7 @@ struct dm_io_client *dm_io_client_create(void)
struct dm_io_client *client;
unsigned min_ios = dm_get_reserved_bio_based_ios();
- client = kmalloc(sizeof(*client), GFP_KERNEL);
+ client = kzalloc(sizeof(*client), GFP_KERNEL);
if (!client)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index e0cfde3501e0d..4609c5b481e23 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -828,7 +828,7 @@ struct dm_kcopyd_client *dm_kcopyd_client_create(struct dm_kcopyd_throttle *thro
int r = -ENOMEM;
struct dm_kcopyd_client *kc;
- kc = kmalloc(sizeof(*kc), GFP_KERNEL);
+ kc = kzalloc(sizeof(*kc), GFP_KERNEL);
if (!kc)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 85c32b22a420a..91c6f6d72eeec 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -179,7 +179,7 @@ struct dm_region_hash *dm_region_hash_create(
;
nr_buckets >>= 1;
- rh = kmalloc(sizeof(*rh), GFP_KERNEL);
+ rh = kzalloc(sizeof(*rh), GFP_KERNEL);
if (!rh) {
DMERR("unable to allocate region hash memory");
return ERR_PTR(-ENOMEM);
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index cf2f44e500e24..c04d9f22d1607 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1136,7 +1136,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
origin_mode = FMODE_WRITE;
}
- s = kmalloc(sizeof(*s), GFP_KERNEL);
+ s = kzalloc(sizeof(*s), GFP_KERNEL);
if (!s) {
ti->error = "Cannot allocate private snapshot structure";
r = -ENOMEM;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 23a7e108352aa..dcb753dbf86e2 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2965,7 +2965,7 @@ static struct pool *pool_create(struct mapped_device *pool_md,
return (struct pool *)pmd;
}
- pool = kmalloc(sizeof(*pool), GFP_KERNEL);
+ pool = kzalloc(sizeof(*pool), GFP_KERNEL);
if (!pool) {
*error = "Error allocating memory for pool";
err_p = ERR_PTR(-ENOMEM);
--
2.20.1
next prev parent reply other threads:[~2019-11-04 22:27 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-04 21:44 [PATCH 4.9 00/62] 4.9.199-stable review Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 01/62] dm snapshot: use mutex instead of rw_semaphore Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 02/62] dm snapshot: introduce account_start_copy() and account_end_copy() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 03/62] dm snapshot: rework COW throttling to fix deadlock Greg Kroah-Hartman
2019-11-04 21:44 ` Greg Kroah-Hartman [this message]
2019-11-04 21:44 ` [PATCH 4.9 05/62] sc16is7xx: Fix for "Unexpected interrupt: 8" Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 06/62] HID: i2c-hid: add Direkt-Tek DTLAPY133-1 to descriptor override Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 07/62] x86/cpu: Add Atom Tremont (Jacobsville) Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 08/62] HID: i2c-hid: Add Odys Winbook 13 to descriptor override Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 09/62] scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 10/62] usb: handle warm-reset port requests on hub resume Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 11/62] rtc: pcf8523: set xtal load capacitance from DT Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 12/62] exec: load_script: Do not exec truncated interpreter path Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 13/62] iio: fix center temperature of bmc150-accel-core Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 14/62] perf map: Fix overlapped map handling Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 15/62] perf jevents: Fix period for Intel fixed counters Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 16/62] staging: rtl8188eu: fix null dereference when kzalloc fails Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 17/62] RDMA/iwcm: Fix a lock inversion issue Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 18/62] gpio: max77620: Use correct unit for debounce times Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 19/62] fs: cifs: mute -Wunused-const-variable message Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 20/62] serial: mctrl_gpio: Check for NULL pointer Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 21/62] efi/cper: Fix endianness of PCIe class code Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 22/62] efi/x86: Do not clean dummy variable in kexec path Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 23/62] ocfs2: clear zero in unaligned direct IO Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 24/62] fs: ocfs2: fix possible null-pointer dereferences in ocfs2_xa_prepare_entry() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 25/62] fs: ocfs2: fix a possible null-pointer dereference in ocfs2_write_end_nolock() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 26/62] fs: ocfs2: fix a possible null-pointer dereference in ocfs2_info_scan_inode_alloc() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 27/62] MIPS: fw: sni: Fix out of bounds init of o32 stack Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 28/62] NFSv4: Fix leak of clp->cl_acceptor string Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 29/62] s390/uaccess: avoid (false positive) compiler warnings Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 30/62] tracing: Initialize iter->seq after zeroing in tracing_read_pipe() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 31/62] USB: legousbtower: fix a signedness bug in tower_probe() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 32/62] thunderbolt: Use 32-bit writes when writing ring producer/consumer Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 33/62] ath6kl: fix a NULL-ptr-deref bug in ath6kl_usb_alloc_urb_from_pipe() Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 34/62] fuse: flush dirty data/metadata before non-truncate setattr Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 35/62] fuse: truncate pending writes on O_TRUNC Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 36/62] ALSA: bebob: Fix prototype of helper function to return negative value Greg Kroah-Hartman
2019-11-04 21:44 ` [PATCH 4.9 37/62] UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments") Greg Kroah-Hartman
2019-11-05 14:31 ` Oliver Neukum
2019-11-06 0:11 ` Sasha Levin
2019-11-06 7:45 ` Oliver Neukum
2019-11-06 11:17 ` Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 38/62] USB: gadget: Reject endpoints with 0 maxpacket value Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 39/62] usb-storage: Revert commit 747668dbc061 ("usb-storage: Set virt_boundary_mask to avoid SG overflows") Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 40/62] USB: ldusb: fix ring-buffer locking Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 41/62] USB: ldusb: fix control-message timeout Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 42/62] USB: serial: whiteheat: fix potential slab corruption Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 43/62] USB: serial: whiteheat: fix line-speed endianness Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 44/62] HID: i2c-hid: add Trekstor Primebook C11B to descriptor override Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 45/62] HID: Fix assumption that devices have inputs Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 46/62] HID: fix error message in hid_open_report() Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 47/62] nl80211: fix validation of mesh path nexthop Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 48/62] s390/cmm: fix information leak in cmm_timeout_handler() Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 49/62] rtlwifi: Fix potential overflow on P2P code Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 50/62] dmaengine: cppi41: Fix cppi41_dma_prep_slave_sg() when idle Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 51/62] llc: fix sk_buff leak in llc_sap_state_process() Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 52/62] llc: fix sk_buff leak in llc_conn_service() Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 53/62] bonding: fix potential NULL deref in bond_update_slave_arr Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 54/62] net: usb: sr9800: fix uninitialized local variable Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 55/62] sch_netem: fix rcu splat in netem_enqueue() Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 56/62] sctp: fix the issue that flags are ignored when using kernel_connect Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 57/62] sctp: not bind the socket in sctp_connect Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 58/62] xfs: Correctly invert xfs_buftarg LRU isolation logic Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 59/62] ALSA: timer: Follow standard EXPORT_SYMBOL() declarations Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 60/62] ALSA: timer: Limit max instances per timer Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 61/62] ALSA: timer: Simplify error path in snd_timer_open() Greg Kroah-Hartman
2019-11-04 21:45 ` [PATCH 4.9 62/62] ALSA: timer: Fix mutex deadlock at releasing card Greg Kroah-Hartman
2019-11-05 5:56 ` [PATCH 4.9 00/62] 4.9.199-stable review kernelci.org bot
2019-11-05 7:05 ` Naresh Kamboju
2019-11-05 14:24 ` Guenter Roeck
2019-11-05 17:01 ` shuah
2019-11-05 23:37 ` Jon Hunter
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