From: Jens Axboe axboe@kernel.dk
commit 56450c20fe10d4d93f58019109aa4e06fc0b9206 upstream.
Make sure we clear req->result, which was set to -EAGAIN for retry purposes, when moving it to the reissue list. Otherwise we can end up retrying a request more than once, which leads to weird results in the io-wq handling (and other spots).
Cc: stable@vger.kernel.org Reported-by: Andres Freund andres@anarazel.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/io_uring.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1810,6 +1810,7 @@ static void io_iopoll_complete(struct io
req = list_first_entry(done, struct io_kiocb, list); if (READ_ONCE(req->result) == -EAGAIN) { + req->result = 0; req->iopoll_completed = 0; list_move_tail(&req->list, &again); continue;