6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pavel Begunkov <asml.silence@xxxxxxxxx> commit 1bfed23349716a7811645336a7ce42c4b8f250bc upstream. Don't allow overflowing multishot accept CQEs, we want to limit the grows of the overflow list. Cc: stable@xxxxxxxxxxxxxxx Fixes: 4e86a2c980137 ("io_uring: implement multishot mode for accept") Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx> Link: https://lore.kernel.org/r/7d0d749649244873772623dd7747966f516fe6e2.1691757663.git.asml.silence@xxxxxxxxx Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- io_uring/net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/io_uring/net.c +++ b/io_uring/net.c @@ -1367,7 +1367,7 @@ retry: if (ret < 0) return ret; if (io_aux_cqe(req, issue_flags & IO_URING_F_COMPLETE_DEFER, ret, - IORING_CQE_F_MORE, true)) + IORING_CQE_F_MORE, false)) goto retry; return -ECANCELED;