From: Karol Herbst <kherbst@xxxxxxxxxx> commit d10285a25e29f13353bbf7760be8980048c1ef2f upstream. other drivers seems to do something similar Signed-off-by: Karol Herbst <kherbst@xxxxxxxxxx> Cc: dri-devel <dri-devel@xxxxxxxxxxxxxxxxxxxxx> Cc: Dave Airlie <airlied@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20201006220528.13925-2-kherbst@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/nouveau/nouveau_mem.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/nouveau/nouveau_mem.c +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c @@ -176,6 +176,8 @@ void nouveau_mem_del(struct ttm_mem_reg *reg) { struct nouveau_mem *mem = nouveau_mem(reg); + if (!mem) + return; nouveau_mem_fini(mem); kfree(reg->mm_node); reg->mm_node = NULL;
