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| author | Jens Axboe <axboe@kernel.dk> | 2022-12-21 15:11:33 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-12-21 21:31:40 +0100 |
| commit | 23fffb2f09ce1145cbd751801d45ba74acaa6542 (patch) | |
| tree | e671424b224afc2f9a8500e87fdfd0f3cefe42c6 /lib/dim | |
| parent | io_uring: finish waiting before flushing overflow entries (diff) | |
| download | linux-23fffb2f09ce1145cbd751801d45ba74acaa6542.tar.xz linux-23fffb2f09ce1145cbd751801d45ba74acaa6542.zip | |
io_uring/cancel: re-grab ctx mutex after finishing wait
If we have a signal pending during cancelations, it'll cause the
task_work run to return an error. Since we didn't run task_work, the
current task is left in TASK_INTERRUPTIBLE state when we need to
re-grab the ctx mutex, and the kernel will rightfully complain about
that.
Move the lock grabbing for the error cases outside the loop to avoid
that issue.
Reported-by: syzbot+7df055631cd1be4586fd@syzkaller.appspotmail.com
Link: https://lore.kernel.org/io-uring/0000000000003a14a905f05050b0@google.com/
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'lib/dim')
0 files changed, 0 insertions, 0 deletions