[PATCH 3/3] io_uring/net: don't overflow multishot recv

[Pavel Begunkov <asml.silence@xxxxxxxxx>]

[ upstream commit b2e74db55dd93d6db22a813c9a775b5dbf87c560 ]

Don't allow overflowing multishot recv CQEs, it might get out of
hand, hurt performance, and in the worst case scenario OOM the task.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: b3fdea6ecb55c ("io_uring: multishot recv")
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
Link: https://lore.kernel.org/r/0b295634e8f1b71aa764c984608c22d85f88f75c.1691757663.git.asml.silence@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
 io_uring/net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_uring/net.c b/io_uring/net.c
index 0aadbd72b7a9..0e0cc8c8189e 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -635,7 +635,7 @@ static inline bool io_recv_finish(struct io_kiocb *req, int *ret,
 
 	if (!mshot_finished) {
 		if (io_aux_cqe(req, issue_flags & IO_URING_F_COMPLETE_DEFER,
-			       *ret, cflags | IORING_CQE_F_MORE, true)) {
+			       *ret, cflags | IORING_CQE_F_MORE, false)) {
 			io_recv_prep_retry(req);
 			return false;
 		}
-- 
2.41.0