https://github.com/torvalds/linux
Revision d0a180341fe00cd0bd1cc259d196dc255c13f229 authored by Guoqing Jiang on 07 June 2022, 02:03:56 UTC, committed by Song Liu on 15 June 2022, 17:30:14 UTC
The 07reshape5intr test is broke because of below path.

    md_reap_sync_thread
            -> mddev_unlock
            -> md_unregister_thread(&mddev->sync_thread)

And md_check_recovery is triggered by,

mddev_unlock -> md_wakeup_thread(mddev->thread)

then mddev->reshape_position is set to MaxSector in raid5_finish_reshape
since MD_RECOVERY_INTR is cleared in md_check_recovery, which means
feature_map is not set with MD_FEATURE_RESHAPE_ACTIVE and superblock's
reshape_position can't be updated accordingly.

Fixes: 8b48ec23cc51a ("md: don't unregister sync_thread with reconfig_mutex held")
Reported-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Song Liu <song@kernel.org>
1 parent 2396e95
History
Tip revision: d0a180341fe00cd0bd1cc259d196dc255c13f229 authored by Guoqing Jiang on 07 June 2022, 02:03:56 UTC
Revert "md: don't unregister sync_thread with reconfig_mutex held"
Tip revision: d0a1803
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