From 91482864768a874c4290ef93b84a78f4f1dac51b Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Thu, 17 Nov 2022 18:40:16 +0000 Subject: io_uring: fix multishot accept request leaks Having REQ_F_POLLED set doesn't guarantee that the request is executed as a multishot from the polling path. Fortunately for us, if the code thinks it's multishot issue when it's not, it can only ask to skip completion so leaking the request. Use issue_flags to mark multipoll issues. Cc: stable@vger.kernel.org Fixes: 390ed29b5e425 ("io_uring: add IORING_ACCEPT_MULTISHOT for accept") Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/7700ac57653f2823e30b34dc74da68678c0c5f13.1668710222.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- io_uring/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'io_uring/io_uring.c') diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 4a1e482747cc..8840cf3e20f2 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -1768,7 +1768,7 @@ int io_poll_issue(struct io_kiocb *req, bool *locked) io_tw_lock(req->ctx, locked); if (unlikely(req->task->flags & PF_EXITING)) return -EFAULT; - return io_issue_sqe(req, IO_URING_F_NONBLOCK); + return io_issue_sqe(req, IO_URING_F_NONBLOCK|IO_URING_F_MULTISHOT); } struct io_wq_work *io_wq_free_work(struct io_wq_work *work) -- cgit v1.2.3-70-g09d2