Add error handling to check NULL input in mtk_drm_crtc_dma_dev_get function. While display path is not configured correctly, none of crtc is established. So the caller of mtk_drm_crtc_dma_dev_get may pass input parameter *crtc as NULL, Which may cause coredump when we try to get the container of NULL pointer. Stuart Lee (1): drm/mediatek: Fix access violation in mtk_drm_crtc_dma_dev_get drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) -- 2.18.0
