io_uring: warn on not destroyed io-wq

Make sure that we killed an io-wq by the time a task is dead.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 83973f6..796b6d1 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -7843,6 +7843,8 @@ void __io_uring_free(struct task_struct *tsk)
        struct io_uring_task *tctx = tsk->io_uring;
 
        WARN_ON_ONCE(!xa_empty(&tctx->xa));
+       WARN_ON_ONCE(tctx->io_wq);
+
        percpu_counter_destroy(&tctx->inflight);
        kfree(tctx);
        tsk->io_uring = NULL;