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Guoqing Jiang 1e26774228 md: protect md_unregister_thread from reentrancy 
Generally, the md_unregister_thread is called with reconfig_mutex, but
raid_message in dm-raid doesn't hold reconfig_mutex to unregister thread,
so md_unregister_thread can be called simulitaneously from two call sites
in theory.

Then after previous commit which remove the protection of reconfig_mutex
for md_unregister_thread completely, the potential issue could be worse
than before.

Let's take pers_lock at the beginning of function to ensure reentrancy.

Reported-by: Donald Buczek <buczek@molgen.mpg.de>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Song Liu <song@kernel.org>
2022-05-22 23:07:21 -07:00
..
bcache
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
persistent-data
dm space map common: add bounds check to sm_ll_lookup_bitmap()
2022-01-04 13:58:19 -05:00
dm-audit.c
dm: introduce audit event module for device mapper
2021-10-27 16:53:47 -04:00
dm-audit.h
dm: introduce audit event module for device mapper
2021-10-27 16:53:47 -04:00
dm-bio-prison-v1.c
…
dm-bio-prison-v1.h
…
dm-bio-prison-v2.c
…
dm-bio-prison-v2.h
…
dm-bio-record.h
block: move integrity handling out of <linux/blkdev.h>
2021-10-18 06:17:02 -06:00
dm-bufio.c
block: turn bio_kmalloc into a simple kmalloc wrapper
2022-04-17 19:30:41 -06:00
dm-builtin.c
…
dm-cache-background-tracker.c
…
dm-cache-background-tracker.h
…
dm-cache-block-types.h
…
dm-cache-metadata.c
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-cache-metadata.h
…
dm-cache-policy-internal.h
…
dm-cache-policy-smq.c
dm cache policy smq: make static read-only array table const
2022-02-22 10:35:53 -05:00
dm-cache-policy.c
…
dm-cache-policy.h
…
dm-cache-target.c
block: remove QUEUE_FLAG_DISCARD
2022-04-17 19:49:59 -06:00
dm-clone-metadata.c
dm clone metadata: remove unused function
2021-04-19 13:20:31 -04:00
dm-clone-metadata.h
dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()
2020-03-27 14:42:51 -04:00
dm-clone-target.c
block: remove QUEUE_FLAG_DISCARD
2022-04-17 19:49:59 -06:00
dm-core.h
dm: fix dm_io and dm_target_io flags race condition on Alpha
2022-04-01 13:19:27 -04:00
dm-crypt.c
SCSI misc on 20220324
2022-03-24 19:37:53 -07:00
dm-delay.c
dm: simplify dm_sumbit_bio_remap interface
2022-03-10 13:44:56 -05:00
dm-dust.c
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-ebs-target.c
scsi: dm: Remove WRITE_SAME support
2022-02-22 21:11:08 -05:00
dm-era-target.c
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-exception-store.c
…
dm-exception-store.h
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-flakey.c
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-ima.c
dm ima: fix wrong length calculation for no_data string
2022-02-22 10:42:41 -05:00
dm-ima.h
dm ima: add version info to dm related events in ima log
2021-08-20 15:59:47 -04:00
dm-init.c
dm init: Set file local variable static
2020-08-04 15:51:28 -04:00
dm-integrity.c
dm integrity: fix memory corruption when tag_size is less than digest size
2022-04-13 12:38:49 -04:00
dm-io-tracker.h
dm writecache: make writeback pause configurable
2021-06-28 16:30:13 -04:00
dm-io.c
block: add a bdev_max_discard_sectors helper
2022-04-17 19:49:59 -06:00
dm-ioctl.c
dm ioctl: log an error if the ioctl structure is corrupted
2022-04-01 10:29:43 -04:00
dm-kcopyd.c
dm writecache: have ssd writeback wait if the kcopyd workqueue is busy
2021-06-15 15:42:03 -04:00
dm-linear.c
scsi: dm: Remove WRITE_SAME support
2022-02-22 21:11:08 -05:00
dm-log-userspace-base.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c
block: remove QUEUE_FLAG_DISCARD
2022-04-17 19:49:59 -06:00
dm-log.c
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-mpath.c
SCSI misc on 20220324
2022-03-24 19:37:53 -07:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
dm mpath: pass IO start time to path selector
2020-05-15 10:29:36 -04:00
dm-ps-historical-service-time.c
dm mpath: only use ktime_get_ns() in historical selector
2022-04-13 13:22:16 -04:00
dm-ps-io-affinity.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-ps-queue-length.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-ps-round-robin.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-ps-service-time.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-raid1.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-raid.c
md: don't unregister sync_thread with reconfig_mutex held
2022-05-22 23:07:21 -07:00
dm-region-hash.c
…
dm-rq.c
SCSI misc on 20220324
2022-03-24 19:37:53 -07:00
dm-rq.h
…
dm-snap-persistent.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-snap-transient.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-snap.c
dm-snap: use blkdev_issue_flush instead of open coding it
2022-02-02 07:49:59 -07:00
dm-stats.c
dm stats: fix too short end duration_ns when using precise_timestamps
2022-02-21 15:35:39 -05:00
dm-stats.h
dm stats: fix too short end duration_ns when using precise_timestamps
2022-02-21 15:35:39 -05:00
dm-stripe.c
scsi: dm: Remove WRITE_SAME support
2022-02-22 21:11:08 -05:00
dm-switch.c
dm: use bdev_nr_sectors and bdev_nr_bytes instead of open coding them
2021-10-18 14:43:22 -06:00
dm-sysfs.c
dm sysfs: use default_groups in kobj_type
2022-01-06 09:48:55 -05:00
dm-table.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
dm-target.c
…
dm-thin-metadata.c
dm thin metadata: remove unused dm_thin_remove_block and __remove
2022-02-22 13:55:50 -05:00
dm-thin-metadata.h
dm thin metadata: remove unused dm_thin_remove_block and __remove
2022-02-22 13:55:50 -05:00
dm-thin.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
dm-uevent.c
…
dm-uevent.h
…
dm-unstripe.c
dm: update target status functions to support IMA measurement
2021-08-10 13:34:23 -04:00
dm-verity-fec.c
dm verity fec: fix misaligned RS roots IO
2021-04-14 14:28:29 -04:00
dm-verity-fec.h
dm verity fec: fix misaligned RS roots IO
2021-04-14 14:28:29 -04:00
dm-verity-target.c
- Add DM core support for emitting audit events through the audit
2021-11-09 11:02:04 -08:00
dm-verity-verify-sig.c
dm verity: fix require_signatures module_param permissions
2021-05-25 16:14:05 -04:00
dm-verity-verify-sig.h
dm verity: Fix compilation warning
2020-08-04 15:48:13 -04:00
dm-verity.h
dm verity: add "panic_on_corruption" error handling mode
2020-07-13 11:47:33 -04:00
dm-writecache.c
block: pass a block_device and opf to bio_alloc_bioset
2022-02-02 07:49:59 -07:00
dm-zero.c
dm: add support for REQ_NOWAIT to various targets
2020-12-04 18:04:35 -05:00
dm-zone.c
dm zone: fix NULL pointer dereference in dm_zone_map_bio
2022-04-13 13:22:17 -04:00
dm-zoned-metadata.c
dm-zoned: remove the ->name field in struct dmz_dev
2022-03-02 12:15:35 -05:00
dm-zoned-reclaim.c
dm kcopyd: avoid useless atomic operations
2021-06-04 12:07:24 -04:00
dm-zoned-target.c
dm-zoned: don't set the discard_alignment queue limit
2022-05-03 10:38:50 -06:00
dm-zoned.h
dm-zoned: remove the ->name field in struct dmz_dev
2022-03-02 12:15:35 -05:00
dm.c
block: remove QUEUE_FLAG_DISCARD
2022-04-17 19:49:59 -06:00
dm.h
dax: remove dax_capable
2021-12-04 08:58:51 -08:00
Kconfig
blk-mq: make the blk-mq stacking code optional
2022-02-16 19:39:09 -07:00
Makefile
dm: introduce audit event module for device mapper
2021-10-27 16:53:47 -04:00
md-autodetect.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
md-bitmap.c
md: replace deprecated strlcpy & remove duplicated line
2022-04-25 14:00:36 -07:00
md-bitmap.h
…
md-cluster.c
md: replace deprecated strlcpy & remove duplicated line
2022-04-25 14:00:36 -07:00
md-cluster.h
…
md-faulty.c
block: pass a block_device to bio_clone_fast
2022-02-04 07:43:18 -07:00
md-linear.c
block: remove QUEUE_FLAG_DISCARD
2022-04-17 19:49:59 -06:00
md-linear.h
md/raid1: Replace zero-length array with flexible-array
2020-05-13 12:02:23 -07:00
md-multipath.c
SCSI misc on 20220324
2022-03-24 19:37:53 -07:00
md-multipath.h
…
md.c
md: protect md_unregister_thread from reentrancy
2022-05-22 23:07:21 -07:00
md.h
md: don't unregister sync_thread with reconfig_mutex held
2022-05-22 23:07:21 -07:00
raid0.c
md/raid0: Ignore RAID0 layout if the second zone has only one device
2022-04-25 14:00:37 -07:00
raid0.h
…
raid1-10.c
md: raid1/raid10: drop pending_cnt
2022-03-08 15:16:54 -08:00
raid1.c
md: Set MD_BROKEN for RAID1 and RAID10
2022-04-25 14:00:34 -07:00
raid1.h
md: raid1/raid10: drop pending_cnt
2022-03-08 15:16:54 -08:00
raid5-cache.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
raid5-log.h
…
raid5-ppl.c
md/raid5-ppl: Annotate with rcu_dereference_protected()
2022-04-25 14:00:37 -07:00
raid5.c
raid5: don't set the discard_alignment queue limit
2022-05-03 10:38:50 -06:00
raid5.h
md/raid5: Add __rcu annotation to struct disk_info
2022-04-25 14:00:36 -07:00
raid10.c
md: Set MD_BROKEN for RAID1 and RAID10
2022-04-25 14:00:34 -07:00
raid10.h
md: raid1/raid10: drop pending_cnt
2022-03-08 15:16:54 -08:00