In the Linux kernel, the following vulnerability has been resolved: drm/rockchip: vop: Fix a dereferenced before check warning The 'state' can't be NULL, we should check crtcstate. Fix warning: drivers/gpu/drm/rockchip/rockchipdrmvop.c:1096 vopplaneatomicasync_check() warn: variable dereferenced before check 'state' (see line 1077)