[PATCH 3/3] udmabuf: check that flags has no unsupported bits set
From: Gerd Hoffmann
Date: Thu Aug 22 2019 - 09:45:14 EST
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Reported-by: Yann Droneaud <ydroneaud@xxxxxxxxxx>
---
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;
--
2.18.1