From: Xiongwei Song sxwjean@gmail.com
[ Upstream commit 19d859a7205bc59ffc38303eb25ae394f61d21dc ]
In the function ttm_page_alloc_init, kzalloc call is made for variable _manager, we need to check its return value, it may return NULL.
Signed-off-by: Xiongwei Song sxwjean@gmail.com Reviewed-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/gpu/drm/ttm/ttm_page_alloc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index ddd6badd0eee..c756b2b7f5dc 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -818,6 +818,8 @@ int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages) pr_info("Initializing pool allocator\n");
_manager = kzalloc(sizeof(*_manager), GFP_KERNEL); + if (!_manager) + return -ENOMEM;
ttm_page_pool_init_locked(&_manager->wc_pool, GFP_HIGHUSER, "wc");