if drm_syncobj_fence_get return null, we will get a null pointer. Fix this by adding the null pointer check on fence.
Signed-off-by: Yongzhi Liu lyz_cs@pku.edu.cn --- drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index fd0e15d..3a82a62 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -3184,6 +3184,10 @@ eb_fences_add(struct i915_execbuffer *eb, struct i915_request *rq, struct dma_fence *fence;
fence = drm_syncobj_fence_get(eb->gem_context->syncobj); + if (!fence) { + DRM_DEBUG("Syncobj has no fence\n"); + return ERR_PTR(-EINVAL); + } err = i915_request_await_dma_fence(rq, fence); dma_fence_put(fence); if (err)