From: Pavel Begunkov asml.silence@gmail.com
mainline inclusion from mainline-5.5-rc1 commit d3b35796b1e3f118017491d621f624e0de7ff9fb category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27 CVE: NA ---------------------------
If io_req_defer() failed, it needs to cancel a dependant link.
Signed-off-by: Pavel Begunkov asml.silence@gmail.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Zhihao Cheng chengzhihao1@huawei.com Signed-off-by: yangerkun yangerkun@huawei.com Reviewed-by: zhangyi (F) yi.zhang@huawei.com Signed-off-by: Cheng Jian cj.chengjian@huawei.com --- fs/io_uring.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/io_uring.c b/fs/io_uring.c index b18844ca8484..3e223d0cd26b 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2957,6 +2957,8 @@ static void io_queue_sqe(struct io_kiocb *req) if (ret) { if (ret != -EIOCBQUEUED) { io_cqring_add_event(req, ret); + if (req->flags & REQ_F_LINK) + req->flags |= REQ_F_FAIL_LINK; io_double_put_req(req); } } else @@ -2989,6 +2991,8 @@ static void io_queue_link_head(struct io_kiocb *req, struct io_kiocb *shadow) if (ret != -EIOCBQUEUED) { err: io_cqring_add_event(req, ret); + if (req->flags & REQ_F_LINK) + req->flags |= REQ_F_FAIL_LINK; io_double_put_req(req); if (shadow) __io_free_req(shadow);