[PATCH 3/6] drm/amdgpu: Check cs flags.

[Bas Nieuwenhuizen]

Had no validation before. libdrm_amdgpu memsets this, even
for the raw/raw2 functions.

We have a lot of functions touching the ioctl struct, no
strong opinion on where this is placed, but I thought
early would be good.

Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index b4f55f40ce0e..8d6f42e308fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -185,6 +185,9 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
 	int ret;
 	int i;
 
+	if (cs->in.flags)
+		return -EINVAL;
+
 	chunk_array = kvmalloc_array(cs->in.num_chunks, sizeof(uint64_t),
 				     GFP_KERNEL);
 	if (!chunk_array)
-- 
2.45.2