diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-09-16 15:27:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-11-13 15:36:51 -0500 |
| commit | 910f3c2443bc9d902d3cb268cd88f268e7d9a45f (patch) | |
| tree | e3d69944bba19677897689fc9b92959858758c80 /io_uring | |
| parent | b13e199e4b475b11925e348ea4a01f495cd92f31 (diff) | |
| download | linux-910f3c2443bc9d902d3cb268cd88f268e7d9a45f.tar.gz linux-910f3c2443bc9d902d3cb268cd88f268e7d9a45f.tar.bz2 linux-910f3c2443bc9d902d3cb268cd88f268e7d9a45f.zip | |
io_uring/zcrx: check all niovs filled with dma addresses
[ Upstream commit d7ae46b454eb05e3df0d46c2ac9c61416a4d9057 ]
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>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/zcrx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index 2035c77a1635..23ffc95caa42 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -75,6 +75,9 @@ 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; } |