io_uring/sqpoll: early exit thread if task_context wasn't allocated
Ideally we'd want to simply kill the task rather than wake it, but for
now let's just add a startup check that causes the thread to exit.
This can only happen if io_uring_alloc_task_context() fails, which
generally requires fault injection.
Reported-by: Ubisectech Sirius <bugreport@ubisectech.com>
Fixes: af5d68f889
("io_uring/sqpoll: manage task_work privately")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
e21e1c45e1
commit
1251d2025c
|
@ -274,6 +274,10 @@ static int io_sq_thread(void *data)
|
|||
char buf[TASK_COMM_LEN];
|
||||
DEFINE_WAIT(wait);
|
||||
|
||||
/* offload context creation failed, just exit */
|
||||
if (!current->io_uring)
|
||||
goto err_out;
|
||||
|
||||
snprintf(buf, sizeof(buf), "iou-sqp-%d", sqd->task_pid);
|
||||
set_task_comm(current, buf);
|
||||
|
||||
|
@ -371,7 +375,7 @@ static int io_sq_thread(void *data)
|
|||
atomic_or(IORING_SQ_NEED_WAKEUP, &ctx->rings->sq_flags);
|
||||
io_run_task_work();
|
||||
mutex_unlock(&sqd->lock);
|
||||
|
||||
err_out:
|
||||
complete(&sqd->exited);
|
||||
do_exit(0);
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue