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linux/drivers/md
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Bryn M. Reeves 98dbc9c6c6 dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request() 
An "old" (.request_fn) DM 'struct request' stores a pointer to the
associated 'struct dm_rq_target_io' in rq->special.

dm_requeue_original_request(), previously named
dm_requeue_unmapped_original_request(), called dm_unprep_request() to
reset rq->special to NULL.  But rq_end_stats() would go on to hit a NULL
pointer deference because its call to tio_from_request() returned NULL.

Fix this by calling rq_end_stats() _before_ dm_unprep_request()

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Fixes: e262f34741 ("dm stats: add support for request-based DM devices")
Cc: stable@vger.kernel.org # 4.2+
2016-03-14 17:04:34 -04:00
..
bcache
Merge branch 'for-4.5/drivers' of git://git.kernel.dk/linux-block
2016-01-21 18:19:38 -08:00
persistent-data
dm space map metadata: remove unused variable in brb_pop()
2015-12-14 09:26:01 -05:00
bitmap.c
md-cluster: delete useless code
2016-01-24 18:13:37 -08:00
bitmap.h
md-cluster: Use a small window for resync
2015-10-12 01:32:05 -05:00
dm-bio-prison.c
block: add a bi_error field to struct bio
2015-07-29 08:55:15 -06:00
dm-bio-prison.h
dm bio prison: add dm_cell_promote_or_release()
2015-05-29 14:19:06 -04:00
dm-bio-record.h
dm: Refactor for new bio cloning/splitting
2013-11-23 22:33:55 -08:00
dm-bufio.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-01-12 17:11:47 -08:00
dm-bufio.h
dm snapshot: use dm-bufio prefetch
2014-01-14 23:23:03 -05:00
dm-builtin.c
dm sysfs: fix a module unload race
2014-01-14 23:23:04 -05:00
dm-cache-block-types.h
dm cache: revert "remove remainder of distinct discard block size"
2014-11-10 15:25:30 -05:00
dm-cache-metadata.c
dm cache: make sure every metadata function checks fail_io
2016-03-10 17:12:12 -05:00
dm-cache-metadata.h
dm cache: make sure every metadata function checks fail_io
2016-03-10 17:12:12 -05:00
dm-cache-policy-cleaner.c
- Revert a dm-multipath change that caused a regression for unprivledged
2015-11-04 21:19:53 -08:00
dm-cache-policy-internal.h
dm cache: age and write back cache entries even without active IO
2015-06-11 17:13:01 -04:00
dm-cache-policy-smq.c
dm cache policy smq: clarify that mq registration failure was for 'mq'
2016-03-10 17:12:11 -05:00
dm-cache-policy.c
dm cache: add policy name to status output
2014-01-16 13:44:11 -05:00
dm-cache-policy.h
dm cache: age and write back cache entries even without active IO
2015-06-11 17:13:01 -04:00
dm-cache-target.c
dm cache: bump the target version
2016-03-10 17:12:12 -05:00
dm-crypt.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-delay.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-era-target.c
dm persistent data: eliminate unnecessary return values
2015-10-31 19:06:02 -04:00
dm-exception-store.c
- Revert a dm-multipath change that caused a regression for unprivledged
2015-11-04 21:19:53 -08:00
dm-exception-store.h
dm snapshot: fix hung bios when copy error occurs
2016-01-08 20:03:05 -05:00
dm-flakey.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-io.c
md: more open-coded offset_in_page()
2016-01-04 10:29:12 -05:00
dm-ioctl.c
dm: allow immutable request-based targets to use blk-mq pdu
2016-02-22 22:34:37 -05:00
dm-kcopyd.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
dm-linear.c
dm linear: remove redundant target name from error messages
2015-10-31 19:06:03 -04:00
dm-log-userspace-base.c
dm: drop NULL test before kmem_cache_destroy() and mempool_destroy()
2015-10-31 19:06:00 -04:00
dm-log-userspace-transfer.c
dm log userspace transfer: match wait_for_completion_timeout return type
2015-04-15 12:10:20 -04:00
dm-log-userspace-transfer.h
…
dm-log-writes.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-log.c
…
dm-mpath.c
dm mpath: cleanup reinstate_path() et al based on code review
2016-03-10 17:12:04 -05:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
dm path selector: remove 'repeat_count' return from .select_path hook
2016-02-22 22:34:42 -05:00
dm-queue-length.c
dm path selector: remove 'repeat_count' return from .select_path hook
2016-02-22 22:34:42 -05:00
dm-raid1.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-raid.c
dm raid: fix round up of default region size
2015-10-02 12:02:31 -04:00
dm-region-hash.c
dm: convert ffs to __ffs
2015-10-31 19:06:01 -04:00
dm-round-robin.c
dm round robin: use percpu 'repeat_count' and 'current_path'
2016-02-22 22:34:42 -05:00
dm-service-time.c
dm path selector: remove 'repeat_count' return from .select_path hook
2016-02-22 22:34:42 -05:00
dm-snap-persistent.c
dm snapshot: fix hung bios when copy error occurs
2016-01-08 20:03:05 -05:00
dm-snap-transient.c
dm snapshot: fix hung bios when copy error occurs
2016-01-08 20:03:05 -05:00
dm-snap.c
dm snapshot: disallow the COW and origin devices from being identical
2016-03-10 17:12:09 -05:00
dm-stats.c
dm stats: report precise_timestamps and histogram in @stats_list output
2015-08-18 17:20:03 -04:00
dm-stats.h
dm stats: support precise timestamps
2015-06-17 12:40:40 -04:00
dm-stripe.c
Merge tag 'dm-4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
2015-09-02 16:35:26 -07:00
dm-switch.c
dm switch: simplify conditional in alloc_region_table()
2015-10-31 19:06:06 -04:00
dm-sysfs.c
dm: add 'use_blk_mq' module param and expose in per-device ro sysfs attr
2015-04-15 12:10:17 -04:00
dm-table.c
dm snapshot: disallow the COW and origin devices from being identical
2016-03-10 17:12:09 -05:00
dm-target.c
dm: set DM_TARGET_WILDCARD feature on "error" target
2016-02-22 11:06:21 -05:00
dm-thin-metadata.c
dm thin metadata: don't issue prefetches if a transaction abort has failed
2016-03-10 17:12:09 -05:00
dm-thin-metadata.h
dm thin metadata: add dm_thin_remove_range()
2015-06-11 17:13:04 -04:00
dm-thin.c
dm thin: consistently return -ENOSPC if pool has run out of data space
2016-03-11 16:15:22 -05:00
dm-uevent.c
…
dm-uevent.h
…
dm-verity-fec.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-verity-fec.h
dm verity: add support for forward error correction
2015-12-10 10:39:03 -05:00
dm-verity-target.c
dm: rename target's per_bio_data_size to per_io_data_size
2016-02-22 22:34:37 -05:00
dm-verity.h
dm verity: add ignore_zero_blocks feature
2015-12-10 10:39:03 -05:00
dm-zero.c
block: add a bi_error field to struct bio
2015-07-29 08:55:15 -06:00
dm.c
dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()
2016-03-14 17:04:34 -04:00
dm.h
dm: allow immutable request-based targets to use blk-mq pdu
2016-02-22 22:34:37 -05:00
faulty.c
MD: rename some functions
2016-01-20 13:52:20 -08:00
Kconfig
dm: add missing newline between DM_DEBUG_BLOCK_STACK_TRACING and DM_BUFIO
2016-03-10 17:12:11 -05:00
linear.c
block: kill merge_bvec_fn() completely
2015-08-13 12:31:57 -06:00
linear.h
…
Makefile
dm cache: make the 'mq' policy an alias for 'smq'
2016-03-10 17:12:08 -05:00
md-cluster.c
md-cluster: fix missing memory free
2016-01-24 18:13:18 -08:00
md-cluster.h
md-cluster: append some actions when change bitmap from clustered to none
2016-01-06 11:38:57 +11:00
md.c
md updates for 4.5
2016-01-15 12:28:00 -08:00
md.h
md updates for 4.5
2016-01-15 12:28:00 -08:00
multipath.c
md/raid: only permit hot-add of compatible integrity profiles
2016-01-14 11:49:57 +11:00
multipath.h
…
raid0.c
treewide: Fix typos in printk
2015-12-08 14:59:19 +01:00
raid0.h
block: kill merge_bvec_fn() completely
2015-08-13 12:31:57 -06:00
raid1.c
MD: rename some functions
2016-01-20 13:52:20 -08:00
raid1.h
md-cluster: Use a small window for resync
2015-10-12 01:32:05 -05:00
raid5-cache.c
raid5-cache: handle journal hotadd in quiesce
2016-01-14 11:49:43 +11:00
raid5.c
MD: rename some functions
2016-01-20 13:52:20 -08:00
raid5.h
raid5-cache: IO error handling
2015-11-01 13:48:29 +11:00
raid10.c
MD: rename some functions
2016-01-20 13:52:20 -08:00
raid10.h
md/raid10: ensure device failure recorded before write request returns.
2015-08-31 19:43:45 +02:00