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linux/drivers/md
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Mikulas Patocka 6a1099604b dm-snapshot: fix 'scheduling while atomic' on real-time kernels 
[ Upstream commit 8581b19eb2 ]

There is reported 'scheduling while atomic' bug when using dm-snapshot on
real-time kernels. The reason for the bug is that the hlist_bl code does
preempt_disable() when taking the lock and the kernel attempts to take
other spinlocks while holding the hlist_bl lock.

Fix this by converting a hlist_bl spinlock into a regular spinlock.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Jiping Ma <jiping.ma2@windriver.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-17 16:31:19 +01:00
..
bcache
Revert "bcache: remove heap-related macros and switch to generic min_heap"
2025-08-15 12:14:10 +02:00
dm-vdo
dm vdo: return error on corrupted metadata in start_restoring_volume functions
2025-10-15 12:00:15 +02:00
persistent-data
dm array: fix cursor index when skipping across block boundaries
2025-01-17 13:40:34 +01:00
dm-audit.c
…
dm-audit.h
…
dm-bio-prison-v1.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-bio-prison-v1.h
dm bio prison v1: add dm_cell_key_has_valid_range
2023-03-30 15:57:51 -04:00
dm-bio-prison-v2.c
dm: use bio_list_merge_init
2024-04-01 11:53:37 -06:00
dm-bio-prison-v2.h
…
dm-bio-record.h
…
dm-bufio.c
dm-bufio: align write boundary on physical block size
2026-01-08 10:14:44 +01:00
dm-builtin.c
…
dm-cache-background-tracker.c
dm-cache: fix warnings about duplicate slab caches
2024-11-11 17:04:39 +01:00
dm-cache-background-tracker.h
dm-cache: fix warnings about duplicate slab caches
2024-11-11 17:04:39 +01:00
dm-cache-block-types.h
…
dm-cache-metadata.c
dm: Constify struct dm_block_validator
2024-07-19 12:08:15 +02:00
dm-cache-metadata.h
…
dm-cache-policy-internal.h
…
dm-cache-policy-smq.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-cache-policy.c
…
dm-cache-policy.h
…
dm-cache-target.c
dm cache: prevent BUG_ON by blocking retries on failed device resumes
2025-05-29 11:02:28 +02:00
dm-clone-metadata.c
dm: Make use of __assign_bit() API
2024-09-02 16:53:53 +02:00
dm-clone-metadata.h
…
dm-clone-target.c
dm: stop using blk_limits_io_{min,opt}
2024-07-10 13:10:06 +02:00
dm-core.h
dm: fix queue start/stop imbalance under suspend/load/resume races
2025-10-15 12:00:22 +02:00
dm-crypt.c
dm: dm-crypt: Do not partially accept write BIOs with zoned targets
2025-08-28 16:30:53 +02:00
dm-delay.c
dm-delay: remove timer_lock
2024-05-09 09:10:58 -04:00
dm-dust.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-ebs-target.c
dm-ebs: Mark full buffer dirty even on partial write
2026-01-08 10:14:44 +01:00
dm-era-target.c
dm: Constify struct dm_block_validator
2024-07-19 12:08:15 +02:00
dm-exception-store.c
…
dm-exception-store.h
dm-snapshot: fix 'scheduling while atomic' on real-time kernels
2026-01-17 16:31:19 +01:00
dm-flakey.c
dm-flakey: make corrupting read bios work
2025-06-19 15:32:05 +02:00
dm-ima.c
…
dm-ima.h
…
dm-init.c
dm init: Handle minors larger than 255
2024-07-02 20:53:41 +02:00
dm-integrity.c
dm-integrity: limit MAX_TAG_SIZE to 255
2025-10-12 12:57:16 +02:00
dm-io-rewind.c
…
dm-io-tracker.h
…
dm-io.c
dm io: remove code duplication between sync_io and aysnc_io
2024-07-02 12:00:43 +02:00
dm-ioctl.c
dm resume: don't return EINVAL when signalled
2024-08-13 13:51:34 +02:00
dm-kcopyd.c
dm io: Support IO priority
2024-02-20 14:22:51 -05:00
dm-linear.c
dm: optimize flushes
2024-06-26 11:32:39 -04:00
dm-log-userspace-base.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c
dm log-writes: Add missing set_freezable() for freezable kthread
2025-12-18 13:55:21 +01:00
dm-log.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-mpath.c
dm mpath: don't call dm_get_device in multipath_message
2024-07-10 13:10:06 +02:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
…
dm-ps-historical-service-time.c
dm-mpath: don't print the "loaded" message if registering fails
2025-08-20 18:30:46 +02:00
dm-ps-io-affinity.c
…
dm-ps-queue-length.c
dm-mpath: don't print the "loaded" message if registering fails
2025-08-20 18:30:46 +02:00
dm-ps-round-robin.c
dm-mpath: don't print the "loaded" message if registering fails
2025-08-20 18:30:46 +02:00
dm-ps-service-time.c
dm-mpath: don't print the "loaded" message if registering fails
2025-08-20 18:30:46 +02:00
dm-raid1.c
dm-mirror: fix a tiny race condition
2025-06-27 11:11:23 +01:00
dm-raid.c
dm-raid: fix possible NULL dereference with undefined raid type
2025-12-18 13:55:21 +01:00
dm-region-hash.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-rq.c
Revert "dm: requeue IO if mapping table not yet available"
2024-09-15 21:02:54 +02:00
dm-rq.h
…
dm-snap-persistent.c
dm io: Support IO priority
2024-02-20 14:22:51 -05:00
dm-snap-transient.c
…
dm-snap.c
dm-snapshot: fix 'scheduling while atomic' on real-time kernels
2026-01-17 16:31:19 +01:00
dm-stats.c
dm stats: limit the number of entries
2024-01-30 14:06:44 -05:00
dm-stats.h
dm stats: check for and propagate alloc_percpu failure
2023-03-16 13:37:06 -04:00
dm-stripe.c
dm-stripe: fix a possible integer overflow
2025-09-25 11:13:45 +02:00
dm-switch.c
dm: add helper macro for simple DM target module init and exit
2023-04-11 12:09:08 -04:00
dm-sysfs.c
…
dm-table.c
dm-table: fix checking for rq stackable devices
2025-08-20 18:30:46 +02:00
dm-target.c
dm error: mark as DM_TARGET_PASSES_INTEGRITY
2025-11-13 15:34:14 -05:00
dm-thin-metadata.c
dm: Constify struct dm_block_validator
2024-07-19 12:08:15 +02:00
dm-thin-metadata.h
…
dm-thin.c
dm thin: make get_first_thin use rcu-safe list first function
2025-01-17 13:40:45 +01:00
dm-uevent.c
…
dm-uevent.h
…
dm-unstripe.c
dm-unstriped: cast an operand to sector_t to prevent potential uint32_t overflow
2024-11-04 17:34:56 +01:00
dm-verity-fec.c
dm-verity: fix unreliable memory allocation
2025-12-07 06:24:59 +09:00
dm-verity-fec.h
dm-verity: always "map" the data blocks
2024-07-03 21:41:11 +02:00
dm-verity-loadpin.c
dm: verity-loadpin: Add NULL pointer check for 'bdev' parameter
2023-06-28 10:43:04 -07:00
dm-verity-target.c
dm-verity: fix a memory leak if some arguments are specified multiple times
2025-06-27 11:11:23 +01:00
dm-verity-verify-sig.c
dm-verity: fix a memory leak if some arguments are specified multiple times
2025-06-27 11:11:23 +01:00
dm-verity-verify-sig.h
…
dm-verity.h
dm-verity: don't crash if panic_on_corruption is not selected
2024-11-04 17:39:23 +01:00
dm-writecache.c
dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
2024-02-20 14:22:55 -05:00
dm-zero.c
dm: always manage discard support in terms of max_hw_discard_sectors
2024-05-20 15:51:19 -04:00
dm-zone.c
dm: fix dm_blk_report_zones
2025-06-19 15:32:05 +02:00
dm-zoned-metadata.c
block: remove gfp_flags from blkdev_zone_mgmt
2024-02-12 08:41:16 -07:00
dm-zoned-reclaim.c
dm: Fix dm-zoned-reclaim zone write pointer alignment
2024-12-19 18:13:00 +01:00
dm-zoned-target.c
md: dm-zoned-target: Initialize return variable r to avoid uninitialized use
2025-08-20 18:30:46 +02:00
dm-zoned.h
…
dm.c
dm: fix NULL pointer dereference in __dm_suspend()
2025-10-15 12:00:22 +02:00
dm.h
dm: Remove unused declaration and empty definition "dm_zone_map_bio"
2024-08-21 13:12:12 +02:00
Kconfig
md: reintroduce md-linear
2025-02-17 10:05:04 +01:00
Makefile
md: reintroduce md-linear
2025-02-17 10:05:04 +01:00
md-autodetect.c
md: reintroduce md-linear
2025-02-17 10:05:04 +01:00
md-bitmap.c
md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb
2025-09-09 18:58:21 +02:00
md-bitmap.h
md/md-bitmap: remove the last parameter for bimtap_ops->endwrite()
2025-02-08 09:58:11 +01:00
md-cluster.c
md/md-bitmap: make in memory structure internal
2024-08-27 12:43:16 -07:00
md-cluster.h
md-cluster: fix no recovery job when adding/re-adding a disk
2024-07-12 01:30:18 +00:00
md-linear.c
md: fix mssing blktrace bio split events
2025-10-23 16:20:42 +02:00
md.c
md: Fix static checker warning in analyze_sbs
2026-01-08 10:14:37 +01:00
md.h
md: fix rcu protection in md_wakeup_thread
2025-12-18 13:54:55 +01:00
raid0.c
md: fix mssing blktrace bio split events
2025-10-23 16:20:42 +02:00
raid0.h
md/raid0: add discard support for the 'original' layout
2023-06-30 15:43:50 -07:00
raid1-10.c
md/raid1,raid10: don't handle IO error for REQ_RAHEAD and REQ_NOWAIT
2025-09-09 18:58:20 +02:00
raid1.c
md: fix mssing blktrace bio split events
2025-10-23 16:20:42 +02:00
raid1.h
md/md-bitmap: remove the last parameter for bimtap_ops->endwrite()
2025-02-08 09:58:11 +01:00
raid5-cache.c
md/md-bitmap: move bitmap_{start, end}write to md upper layer
2025-02-08 09:58:12 +01:00
raid5-log.h
…
raid5-ppl.c
md: remove mddev->queue
2024-03-06 08:59:53 -08:00
raid5.c
md/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt()
2026-01-08 10:14:37 +01:00
raid5.h
md/md-bitmap: move bitmap_{start, end}write to md upper layer
2025-02-08 09:58:12 +01:00
raid10.c
md/raid10: wait barrier before returning discard request with REQ_NOWAIT
2026-01-08 10:15:00 +01:00
raid10.h
md/md-bitmap: remove the last parameter for bimtap_ops->endwrite()
2025-02-08 09:58:11 +01:00