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authorJens Axboe <axboe@kernel.dk>2021-12-06 20:49:04 +0300
committerJens Axboe <axboe@kernel.dk>2021-12-06 20:49:04 +0300
commite47498afeca9a0c6d07eeeacc46d563555a3f677 (patch)
treee181912fc7daa3f1b7f6f203b221b939956e52f7 /fs
parenta226abcd5d427fe9d42efc442818a4a1821e2664 (diff)
downloadlinux-e47498afeca9a0c6d07eeeacc46d563555a3f677.tar.xz
io-wq: remove spurious bit clear on task_work addition
There's a small race here where the task_work could finish and drop the worker itself, so that by the time that task_work_add() returns with a successful addition we've already put the worker. The worker callbacks clear this bit themselves, so we don't actually need to manually clear it in the caller. Get rid of it. Reported-by: syzbot+b60c982cb0efc5e05a47@syzkaller.appspotmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
-rw-r--r--fs/io-wq.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/io-wq.c b/fs/io-wq.c
index 50cf9f92da36..35da9d90df76 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -359,10 +359,8 @@ static bool io_queue_worker_create(struct io_worker *worker,
init_task_work(&worker->create_work, func);
worker->create_index = acct->index;
- if (!task_work_add(wq->task, &worker->create_work, TWA_SIGNAL)) {
- clear_bit_unlock(0, &worker->create_state);
+ if (!task_work_add(wq->task, &worker->create_work, TWA_SIGNAL))
return true;
- }
clear_bit_unlock(0, &worker->create_state);
fail_release:
io_worker_release(worker);