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Mikulas Patocka 137227f963 Revert "dm: requeue IO if mapping table not yet available" 
[ Upstream commit c8691cd0fc11197515ed148de0780d927bfca38b ]

This reverts commit fa247089de.

The following sequence of commands causes a livelock - there will be
workqueue process looping and consuming 100% CPU:

dmsetup create --notable test
truncate -s 1MiB testdata
losetup /dev/loop0 testdata
dmsetup load test --table '0 2048 linear /dev/loop0 0'
dd if=/dev/zero of=/dev/dm-0 bs=16k count=1 conv=fdatasync

The livelock is caused by the commit fa247089de. The commit claims that
it fixes a race condition, however, it is unknown what the actual race
condition is and what program is involved in the race condition.

When the inactive table is loaded, the nodes /dev/dm-0 and
/sys/block/dm-0 are created. /dev/dm-0 has zero size at this point. When
the device is suspended and resumed, the nodes /dev/mapper/test and
/dev/disk/* are created.

If some program opens a block device before it is created by dmsetup or
lvm, the program is buggy, so dm could just report an error as it used to
do before.

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: fa247089de ("dm: requeue IO if mapping table not yet available")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-10-17 15:21:12 +02:00
..
bcache bcache: fix variable length array abuse in btree_iter 2024-06-16 13:41:33 +02:00
persistent-data dm persistent data: fix memory allocation failure 2024-08-29 17:30:14 +02:00
dm-audit.c
dm-audit.h
dm-bio-prison-v1.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-bio-prison-v1.h
dm-bio-prison-v2.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-bio-prison-v2.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-bio-record.h
dm-bufio.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-builtin.c
dm-cache-background-tracker.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-cache-background-tracker.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-cache-block-types.h
dm-cache-metadata.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-cache-metadata.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-cache-policy-internal.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-cache-policy-smq.c dm cache policy smq: ensure IO doesn't prevent cleaner policy progress 2023-08-03 10:24:17 +02:00
dm-cache-policy.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-cache-policy.h dm: address indent/space issues 2024-03-26 18:21:02 -04:00
dm-cache-target.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-clone-metadata.c bitmap: introduce generic optimized bitmap_size() 2024-08-29 17:30:14 +02:00
dm-clone-metadata.h
dm-clone-target.c dm clone: call kmem_cache_destroy() in dm_clone_init() error path 2023-05-11 23:03:41 +09:00
dm-core.h dm: limit the number of targets and parameter size area 2024-02-23 09:12:52 +01:00
dm-crypt.c dm: address indent/space issues 2024-03-26 18:21:02 -04:00
dm-delay.c dm-delay: fix a race between delay_presuspend and delay_bio 2023-12-03 07:32:11 +01:00
dm-dust.c
dm-ebs-target.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-era-target.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-exception-store.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-exception-store.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-flakey.c dm flakey: fix a crash with invalid table line 2023-05-11 23:03:41 +09:00
dm-ima.c
dm-ima.h
dm-init.c dm init: Handle minors larger than 255 2024-09-12 11:10:22 +02:00
dm-integrity.c dm-integrity: fix a race condition when accessing recalc_sector 2024-09-18 19:23:04 +02:00
dm-io-rewind.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-io-tracker.h
dm-io.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-ioctl.c dm resume: don't return EINVAL when signalled 2024-08-29 17:30:14 +02:00
dm-kcopyd.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-linear.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-log-userspace-base.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-log-userspace-transfer.c dm: avoid split of quoted strings where possible 2023-07-19 16:22:07 +02:00
dm-log-userspace-transfer.h
dm-log-writes.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-log.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-mpath.c dm: fix undue/missing spaces 2023-07-19 16:22:07 +02:00
dm-mpath.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-path-selector.c
dm-path-selector.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-ps-historical-service-time.c
dm-ps-io-affinity.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-ps-queue-length.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-ps-round-robin.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-ps-service-time.c dm: fix undue/missing spaces 2023-07-19 16:22:07 +02:00
dm-raid.c dm-raid: fix lockdep waring in "pers->hot_add_disk" 2024-04-03 15:19:31 +02:00
dm-raid1.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-region-hash.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-rq.c Revert "dm: requeue IO if mapping table not yet available" 2024-10-17 15:21:12 +02:00
dm-rq.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-snap-persistent.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-snap-transient.c dm: avoid split of quoted strings where possible 2023-07-19 16:22:07 +02:00
dm-snap.c dm snapshot: fix lockup in dm_exception_table_exit 2024-04-03 15:19:39 +02:00
dm-stats.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-stats.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-stripe.c dm: avoid split of quoted strings where possible 2023-07-19 16:22:07 +02:00
dm-switch.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-sysfs.c
dm-table.c dm: address indent/space issues 2024-03-26 18:21:02 -04:00
dm-target.c
dm-thin-metadata.c dm thin metadata: Fix ABBA deadlock by resetting dm_bufio_client 2024-01-01 12:39:05 +00:00
dm-thin-metadata.h
dm-thin.c dm: address indent/space issues 2024-03-26 18:21:02 -04:00
dm-uevent.c dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-uevent.h dm: fix undue/missing spaces 2023-07-19 16:22:07 +02:00
dm-unstripe.c
dm-verity-fec.c dm-verity: align struct dm_verity_fec_io properly 2023-12-08 08:51:14 +01:00
dm-verity-fec.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
dm-verity-loadpin.c dm: verity-loadpin: Add NULL pointer check for 'bdev' parameter 2023-07-23 13:49:43 +02:00
dm-verity-target.c dm-verity: fix dm_is_verity_target() when dm-verity is builtin 2024-08-03 08:49:43 +02:00
dm-verity-verify-sig.c
dm-verity-verify-sig.h
dm-verity.h dm-verity, dm-crypt: align "struct bvec_iter" correctly 2024-03-26 18:20:26 -04:00
dm-writecache.c dm io: Support IO priority 2024-03-26 18:21:02 -04:00
dm-zero.c
dm-zone.c
dm-zoned-metadata.c dm: avoid split of quoted strings where possible 2023-07-19 16:22:07 +02:00
dm-zoned-reclaim.c
dm-zoned-target.c dm zoned: free dmz->ddev array in dmz_put_zoned_devices 2023-10-10 22:00:44 +02:00
dm-zoned.h
dm.c Revert "dm: requeue IO if mapping table not yet available" 2024-10-17 15:21:12 +02:00
dm.h dm: change "unsigned" to "unsigned int" 2023-04-13 16:55:17 +02:00
Kconfig dm audit: fix Kconfig so DM_AUDIT depends on BLK_DEV_DM 2024-01-20 11:50:08 +01:00
Makefile
md-autodetect.c
md-bitmap.c md: fix resync softlockup when bitmap size is less than array size 2024-06-12 11:03:06 +02:00
md-bitmap.h md/raid1-10: submit write io directly if bitmap is not enabled 2023-07-19 16:20:58 +02:00
md-cluster.c
md-cluster.h
md-faulty.c
md-linear.c md: add error_handlers for raid0 and linear 2023-09-13 09:42:44 +02:00
md-linear.h
md-multipath.c
md-multipath.h
md.c md: clean up invalid BUG_ON in md_ioctl 2024-08-29 17:30:36 +02:00
md.h md: add error_handlers for raid0 and linear 2023-09-13 09:42:44 +02:00
raid0.c md: raid0: account for split bio in iostat accounting 2023-09-13 09:42:44 +02:00
raid0.h md/raid0: add discard support for the 'original' layout 2023-07-23 13:49:37 +02:00
raid1-10.c md/raid1-10: fix casting from randomized structure in raid1_submit_write() 2023-07-19 16:21:45 +02:00
raid1.c md/raid1: Use blk_opf_t for read and write operations 2024-01-25 15:27:43 -08:00
raid1.h
raid5-cache.c md/raid5-cache: use READ_ONCE/WRITE_ONCE for 'conf->log' 2024-08-29 17:30:30 +02:00
raid5-log.h
raid5-ppl.c
raid5.c md/raid5: avoid BUG_ON() while continue reshape after reassembling 2024-08-14 13:52:45 +02:00
raid5.h
raid10.c md/raid10: prevent soft lockup while flush writes 2024-03-26 18:20:22 -04:00
raid10.h