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| author | Xiongwei Song <sxwjean@gmail.com> | 2018-01-02 21:24:55 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-03 10:23:26 +0100 |
| commit | 3a26db8cf2e952016dd470d02cbf2fa7f886ff29 (patch) | |
| tree | 75b02f7afa5e702819fec98423446dee903cac2c | |
| parent | b4b73c1224de87d677dd5dc6fae8bc9e5b4849b3 (diff) | |
drm/ttm: check the return value of kzalloc
[ 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_page_alloc.c | 2 |
1 files changed, 2 insertions, 0 deletions
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"); |