[PATCH io_uring for-6.18 07/20] io_uring/zcrx: check all niovs filled with dma addresses
From: Pavel Begunkov <asml.silence@gmail.com>
Date: 2025-09-16 14:26:57
Also in:
io-uring
Subsystem:
io_uring, io_uring zcrx, the rest · Maintainers:
Jens Axboe, Pavel Begunkov, Linus Torvalds
Add a warning if io_populate_area_dma() can't fill in all net_iovs, it should never happen. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- io_uring/zcrx.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index ef8d60b92646..0f15e0fa5467 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c@@ -77,6 +77,9 @@ static int io_populate_area_dma(struct io_zcrx_ifq *ifq, niov_idx++; } } + + if (WARN_ON_ONCE(niov_idx != area->nia.num_niovs)) + return -EFAULT; return 0; }
--
2.49.0