[Linaro-mm-sig] [PATCH 3/3] udmabuf: check that flags has no unsupported bits set

Signed-off-by: Gerd Hoffmann kraxel@redhat.com Reported-by: Yann Droneaud ydroneaud@opteya.com --- drivers/dma-buf/udmabuf.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 6c3ec8fcef01..ca1364102b18 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -131,6 +131,9 @@ static long udmabuf_create(const struct udmabuf_create_list *head, int seals, ret = -EINVAL; u32 i, flags;

+ if (head->flags & ~UDMABUF_FLAGS_CLOEXEC) + return -EINVAL; + ubuf = kzalloc(sizeof(*ubuf), GFP_KERNEL); if (!ubuf) return -ENOMEM;