From: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat, 27 Feb 2021 11:16:45 +0000 (+0000)
Subject: io_uring: warn on not destroyed io-wq
X-Git-Tag: v5.12-rc2~6^2~29
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ef8eaa4e65facb1f51a64dbb4f5500134622c67c;p=linux-platform-drivers-x86.git

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 83973f6b3c0a..796b6d1f72f9 100644
--- 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;