Commit 84965ff8 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: if we see flush on exit, cancel related tasks 



Ensure we match tasks that belong to a dead or dying task as well, as we
need to reap those in addition to those belonging to the exiting task.

Cc: stable@vger.kernel.org # 5.9+
Reported-by: default avatarJosef Grieb <josef.grieb@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 6ee1d745

fs/io_uring.c

+8 −1
Original line number Diff line number Diff line
@@ -1069,8 +1069,12 @@ static bool io_match_task(struct io_kiocb *head, 
{

	struct io_kiocb *req;



	if (task && head->task != task)

	if (task && head->task != task) {

		/* in terms of cancelation, always match if req task is dead */

		if (head->task->flags & PF_EXITING)

			return true;

		return false;

	}

	if (!files)

		return true;
@@ -9136,6 +9140,9 @@ static int io_uring_flush(struct file *file, void *data) 
	struct io_uring_task *tctx = current->io_uring;

	struct io_ring_ctx *ctx = file->private_data;



	if (fatal_signal_pending(current) || (current->flags & PF_EXITING))

		io_uring_cancel_task_requests(ctx, NULL);



	if (!tctx)

		return 0;