[Linaro-mm-sig] [PATCH v3 2/3] udmabuf: check that __pad is zero

Reported-by: Yann Droneaud ydroneaud@opteya.com Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- drivers/dma-buf/udmabuf.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 9edabce0b8..964beadd11 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -134,6 +134,8 @@ static long udmabuf_create(const struct udmabuf_create_list *head,

pglimit = (size_limit_mb * 1024 * 1024) >> PAGE_SHIFT; for (i = 0; i < head->count; i++) { + if (list[i].__pad) + goto err; if (!IS_ALIGNED(list[i].offset, PAGE_SIZE)) goto err; if (!IS_ALIGNED(list[i].size, PAGE_SIZE))