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| author | Mike Snitzer <[email protected]> | 2022-06-10 19:07:48 +0000 |
|---|---|---|
| committer | Mike Snitzer <[email protected]> | 2022-06-10 19:23:54 +0000 |
| commit | dddf30564054796696bcd4c462b232a5beacf72c (patch) | |
| tree | 28e1f26e4971e5f2df79d3f8f88928286f568ed3 /scripts/clang-tools/gen_compile_commands.py | |
| parent | block: remove bioset_init_from_src (diff) | |
| download | kernel-dddf30564054796696bcd4c462b232a5beacf72c.tar.gz kernel-dddf30564054796696bcd4c462b232a5beacf72c.zip | |
dm: fix zoned locking imbalance due to needless check in clone_endio
After the commit ca522482e3ea ("dm: pass NULL bdev to bio_alloc_clone"),
clone_endio() only calls dm_zone_endio() when DM targets remap the
clone bio's bdev to something other than the md->disk->part0 default.
However, if a DM target (e.g. dm-crypt) stacked ontop of a dm-zoned
does not remap the clone bio using bio_set_dev() then dm_zone_endio()
is not called at completion of the bios and zone locks are not
properly unlocked. This triggers a hang, in dm_zone_map_bio(), when
blktests block/004 is run for dm-crypt on zoned block devices. To
avoid the hang, simply remove the clone_endio() check that verifies
the target remapped the clone bio to a device other than the default.
Fixes: ca522482e3ea ("dm: pass NULL bdev to bio_alloc_clone")
Reported-by: Shin'ichiro Kawasaki <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
Diffstat (limited to 'scripts/clang-tools/gen_compile_commands.py')
0 files changed, 0 insertions, 0 deletions