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authorAlex Deucher <alexander.deucher@amd.com>2017-03-08 17:40:17 -0500
committerAlex Deucher <alexander.deucher@amd.com>2017-03-09 16:34:27 -0500
commit834e0f8ae4e104fa026ffe5cdee58491f3078403 (patch)
tree4cdcb49fc864bad2a1260cc279957121d7a1cee0 /drivers/gpu
parentc085bd5119d5d0bdf3ef591a5563566be7dedced (diff)
downloadlinux-834e0f8ae4e104fa026ffe5cdee58491f3078403.tar.bz2
drm/amdgpu: validate paramaters in the gem ioctl
Reject it if there are any invalid flags or domains. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 51d759463384..106cf83c2e6b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -202,6 +202,27 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
bool kernel = false;
int r;
+ /* reject invalid gem flags */
+ if (args->in.domain_flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
+ AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
+ AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+ AMDGPU_GEM_CREATE_VRAM_CLEARED|
+ AMDGPU_GEM_CREATE_SHADOW |
+ AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) {
+ r = -EINVAL;
+ goto error_unlock;
+ }
+ /* reject invalid gem domains */
+ if (args->in.domains & ~(AMDGPU_GEM_DOMAIN_CPU |
+ AMDGPU_GEM_DOMAIN_GTT |
+ AMDGPU_GEM_DOMAIN_VRAM |
+ AMDGPU_GEM_DOMAIN_GDS |
+ AMDGPU_GEM_DOMAIN_GWS |
+ AMDGPU_GEM_DOMAIN_OA)) {
+ r = -EINVAL;
+ goto error_unlock;
+ }
+
/* create a gem object to contain this object in */
if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {