| From foo@baz Wed Feb 28 16:16:23 CET 2018 |
| From: Xiongwei Song <sxwjean@gmail.com> |
| Date: Tue, 2 Jan 2018 21:24:55 +0800 |
| Subject: drm/ttm: check the return value of kzalloc |
| |
| 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 Kรถnig <christian.koenig@amd.com> |
| Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
| Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| drivers/gpu/drm/ttm/ttm_page_alloc.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- 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_g |
| 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"); |
| |
