diff options
| author | Ming Lei <ming.lei@redhat.com> | 2026-01-23 17:15:42 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-01-23 05:11:02 -0700 |
| commit | dbc635c4be7eba1d0e0fe0275a289ee3ccc63d72 (patch) | |
| tree | 4d83cd5710b2f58559670e89bf1d68c8bef0d011 /include | |
| parent | e8cd481cc665d5db8e918e84740db22bc213059e (diff) | |
ublk: move ublk_mark_io_ready() out of __ublk_fetch()
ublk_batch_prep_io() calls __ublk_fetch() while holding io->lock
spinlock. When the last IO makes the device ready, ublk_mark_io_ready()
tries to acquire ub->cancel_mutex which can sleep, causing a
sleeping-while-atomic bug.
Fix by moving ublk_mark_io_ready() out of __ublk_fetch() and into the
callers (ublk_fetch and ublk_batch_prep_io) after the spinlock is
released.
Reported-by: Jens Axboe <axboe@kernel.dk>
Fixes: b256795b3606 ("ublk: handle UBLK_U_IO_PREP_IO_CMDS")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions