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Jens Axboe c0f3fd2b38 blk-mq: fix deadlock in blk_mq_register_disk() error path 
If we fail registering any of the hardware queues, we call
into blk_mq_unregister_disk() with the hotplug mutex already
held. Since blk_mq_unregister_disk() attempts to acquire the
same mutex, we end up in a less than happy place.

Reported-by: Jinpu Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
 		2016-08-04 14:19:16 -06:00
..
partitions block: atari: Return early for unsupported sector size 2016-07-13 09:31:44 -07:00
Kconfig block: remove BLK_DEV_DAX config option 2016-08-04 08:50:07 -04:00
Kconfig.iosched blkcg: make CONFIG_BLK_CGROUP bool 2012-03-06 21:27:21 +01:00
Makefile Initial roundup of 4.5 merge window patches 2016-01-23 18:45:06 -08:00
badblocks.c block, badblocks: introduce devm_init_badblocks 2016-01-09 08:39:04 -08:00
bio-integrity.c Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block 2016-07-26 15:37:51 -07:00
bio.c block: add missing group association in bio-cloning functions 2016-08-04 14:19:16 -06:00
blk-cgroup.c block/blk-cgroup.c: Declare local symbols static 2016-06-14 09:09:33 -06:00
blk-core.c Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block 2016-07-26 15:37:51 -07:00
blk-exec.c block: Fix spelling in a source code comment 2016-07-20 21:28:22 -06:00
blk-flush.c block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH 2016-06-07 13:41:38 -06:00
blk-integrity.c block, libnvdimm, nvme: provide a built-in blk_integrity nop profile 2015-10-21 14:43:45 -06:00
blk-ioc.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
blk-lib.c Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block 2016-07-26 15:37:51 -07:00
blk-map.c block: simplify and export blk_rq_append_bio 2016-07-20 17:38:32 -06:00
blk-merge.c Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block 2016-07-26 15:37:51 -07:00
blk-mq-cpu.c blk-mq: add file comments and update copyright notices 2014-05-28 10:15:41 -06:00
blk-mq-cpumap.c blk-mq: Avoid memoryless numa node encoded in hctx numa_node 2015-12-03 09:56:27 -07:00
blk-mq-sysfs.c blk-mq: fix deadlock in blk_mq_register_disk() error path 2016-08-04 14:19:16 -06:00
blk-mq-tag.c blk-mq: Introduce blk_mq_reinit_tagset 2016-07-08 08:38:49 -06:00
blk-mq-tag.h blk-mq: factor out a helper to iterate all tags for a request_queue 2015-10-01 10:10:57 +02:00
blk-mq.c blk-mq: Allow timeouts to run while queue is freezing 2016-08-04 14:19:16 -06:00
blk-mq.h blk-mq: dynamic h/w context count 2016-02-09 12:42:17 -07:00
blk-settings.c block: kill off q->flush_flags 2016-04-13 13:33:19 -06:00
blk-softirq.c block: fix regression with block enabled tagging 2014-04-09 21:54:06 -06:00
blk-sysfs.c block: expose QUEUE_FLAG_DAX in sysfs 2016-07-20 21:01:08 -06:00
blk-tag.c block: support different tag allocation policy 2015-01-23 14:15:46 -07:00
blk-throttle.c blkcg: kill unused field nr_undestroyed_grps 2016-08-04 14:19:16 -06:00
blk-timeout.c block: remove REQ_NO_TIMEOUT flag 2015-12-22 09:38:34 -07:00
blk.h block: simplify and export blk_rq_append_bio 2016-07-20 17:38:32 -06:00
bounce.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2015-09-19 18:57:09 -07:00
bsg-lib.c bsg: Remove unused function bsg_goose_queue() 2012-12-06 14:33:02 +01:00
bsg.c block: Simplify bsg complete all 2015-02-04 09:57:52 -07:00
cfq-iosched.c block: do not merge requests without consulting with io scheduler 2016-07-20 21:35:12 -06:00
cmdline-parser.c block: remove unrelated header files and export symbol 2014-01-21 20:18:26 -08:00
compat_ioctl.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
deadline-iosched.c block: do not merge requests without consulting with io scheduler 2016-07-20 21:35:12 -06:00
elevator.c block: do not merge requests without consulting with io scheduler 2016-07-20 21:35:12 -06:00
genhd.c block: fix bdi vs gendisk lifetime mismatch 2016-08-04 14:19:16 -06:00
ioctl.c DAX error handling for 4.7 2016-05-26 19:34:26 -07:00
ioprio.c block: fix use-after-free in sys_ioprio_get() 2016-07-01 08:39:24 -06:00
noop-iosched.c elevator: use list_{first,prev,next}_entry 2015-11-16 15:21:48 -07:00
partition-generic.c block/partition-generic.c: Remove a set-but-not-used variable 2016-06-14 09:09:15 -06:00
scsi_ioctl.c mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM 2015-11-06 17:50:42 -08:00
t10-pi.c block: Consolidate static integrity profile properties 2015-10-21 14:42:38 -06:00