[PATCH 2/2] drm/nouveau/mem: guard against NULL pointer access in mem_del

other drivers seems to do something similar

Signed-off-by: Karol Herbst kherbst@redhat.com Cc: dri-devel dri-devel@lists.freedesktop.org Cc: Dave Airlie airlied@redhat.com Cc: stable@vger.kernel.org --- drivers/gpu/drm/nouveau/nouveau_mem.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c index b1bb542d31158..e5fae57fffbd1 100644 --- 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;