[ upstream commmit c487a5ad48831afa6784b368ec40d0ee50f2fe1b ]
Don't forget to cancel all linked requests of poll request when
__io_arm_poll_handler() failed.
Fixes: aa43477b04025 ("io_uring: poll rework")
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
Link: https://lore.kernel.org/r/a78aad962460f9fdfe4aa4c0b62425c88f9415bc.1655852245.git.asml.silence@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
[pavel: backport]
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
fs/io_uring.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index ac9fa3364c45..16b0ea1b5bf7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5838,6 +5838,8 @@ static int io_poll_add(struct io_kiocb *req, unsigned int issue_flags)
ipt.pt._qproc = io_poll_queue_proc;
ret = __io_arm_poll_handler(req, &req->poll, &ipt, poll->events);
+ if (!ret && ipt.error)
+ req_set_fail(req);
ret = ret ?: ipt.error;
if (ret)
__io_req_complete(req, issue_flags, ret, 0);
--
2.37.2
