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twx-linux/drivers/md
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Mikulas Patocka f5d07c5a07 dm: use noio when sending kobject event 
commit 6958c1c640 upstream.

kobject_uevent may allocate memory and it may be called while there are dm
devices suspended. The allocation may recurse into a suspended device,
causing a deadlock. We must set the noio flag when sending a uevent.

The observed deadlock was reported here:
https://www.redhat.com/archives/dm-devel/2020-March/msg00025.html

Reported-by: Khazhismel Kumykov <khazhy@google.com>
Reported-by: Tahsin Erdogan <tahsin@google.com>
Reported-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-22 09:22:19 +02:00
..
bcache
bcache: fix potential deadlock problem in btree_gc_coalesce
2020-06-25 15:41:58 +02:00
persistent-data
dm space map common: fix to ensure new block isn't already in use
2020-02-14 16:32:13 -05:00
bitmap.c
md: Avoid namespace collision with bitmap API
2020-01-29 15:02:39 +01:00
bitmap.h
md: Avoid namespace collision with bitmap API
2020-01-29 15:02:39 +01:00
dm-bio-prison-v1.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-bio-prison-v1.h
…
dm-bio-prison-v2.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-bio-prison-v2.h
…
dm-bio-record.h
dm bio record: save/restore bi_end_io and bi_integrity
2020-04-02 16:34:14 +02:00
dm-bufio.c
…
dm-bufio.h
…
dm-builtin.c
…
dm-cache-background-tracker.c
…
dm-cache-background-tracker.h
…
dm-cache-block-types.h
…
dm-cache-metadata.c
…
dm-cache-metadata.h
…
dm-cache-policy-internal.h
…
dm-cache-policy-smq.c
…
dm-cache-policy.c
…
dm-cache-policy.h
…
dm-cache-target.c
dm cache: fix a crash due to incorrect work item cancelling
2020-03-11 18:03:05 +01:00
dm-core.h
…
dm-crypt.c
dm crypt: avoid truncating the logical block size
2020-06-20 10:25:19 +02:00
dm-delay.c
…
dm-era-target.c
…
dm-exception-store.c
…
dm-exception-store.h
…
dm-flakey.c
dm flakey: check for null arg_name in parse_features()
2020-04-24 08:00:57 +02:00
dm-integrity.c
dm integrity: fix a deadlock due to offloading to an incorrect workqueue
2020-03-11 18:03:08 +01:00
dm-io.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-ioctl.c
…
dm-kcopyd.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-linear.c
…
dm-log-userspace-base.c
…
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c
…
dm-log.c
…
dm-mpath.c
dm mpath: switch paths in dm_blk_ioctl() code path
2020-06-25 15:41:48 +02:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
…
dm-queue-length.c
…
dm-raid1.c
…
dm-raid.c
dm raid: avoid bitmap with raid4/5/6 journal device
2019-12-01 09:13:42 +01:00
dm-region-hash.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-round-robin.c
…
dm-rq.c
…
dm-rq.h
…
dm-service-time.c
…
dm-snap-persistent.c
block: fix an integer overflow in logical block size
2020-01-23 08:20:30 +01:00
dm-snap-transient.c
…
dm-snap.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-stats.c
…
dm-stats.h
…
dm-stripe.c
…
dm-switch.c
…
dm-sysfs.c
…
dm-table.c
…
dm-target.c
…
dm-thin-metadata.c
…
dm-thin-metadata.h
…
dm-thin.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2019-11-06 12:42:52 +01:00
dm-uevent.c
…
dm-uevent.h
…
dm-verity-fec.c
dm verity fec: fix hash block number in verity_fec_decode
2020-05-05 19:15:50 +02:00
dm-verity-fec.h
…
dm-verity-target.c
…
dm-verity.h
…
dm-zero.c
…
dm-zoned-metadata.c
dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone
2020-06-25 15:41:54 +02:00
dm-zoned-reclaim.c
dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone
2020-06-25 15:41:54 +02:00
dm-zoned-target.c
dm zoned: assign max_io_len correctly
2020-07-09 09:36:33 +02:00
dm-zoned.h
dm zoned: reduce overhead of backing device checks
2019-12-17 20:39:25 +01:00
dm.c
dm: use noio when sending kobject event
2020-07-22 09:22:19 +02:00
dm.h
…
faulty.c
…
Kconfig
…
linear.c
…
linear.h
…
Makefile
…
md-cluster.c
md: Avoid namespace collision with bitmap API
2020-01-29 15:02:39 +01:00
md-cluster.h
…
md.c
md: add feature flag MD_FEATURE_RAID0_LAYOUT
2020-06-25 15:42:02 +02:00
md.h
…
multipath.c
…
multipath.h
…
raid0.c
md: add feature flag MD_FEATURE_RAID0_LAYOUT
2020-06-25 15:42:02 +02:00
raid0.h
md/raid0: avoid RAID0 data corruption due to layout confusion.
2019-10-05 12:48:13 +02:00
raid1-10.c
…
raid1.c
md: raid1: check rdev before reference in raid1_sync_request func
2020-01-09 10:17:52 +01:00
raid1.h
…
raid5-cache.c
…
raid5-log.h
…
raid5-ppl.c
…
raid5.c
raid5: need to set STRIPE_HANDLE for batch head
2019-12-17 20:40:03 +01:00
raid5.h
…
raid10.c
md/raid10: prevent access of uninitialized resync_pages offset
2019-12-01 09:14:17 +01:00
raid10.h
…