From 19d859a7205bc59ffc38303eb25ae394f61d21dc Mon Sep 17 00:00:00 2001
From: Xiongwei Song <sxwjean@gmail.com>
Date: Tue, 2 Jan 2018 21:24:55 +0800
Subject: [PATCH] drm/ttm: check the return value of kzalloc
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Git-commit: 19d859a7205bc59ffc38303eb25ae394f61d21dc
Patch-mainline: v4.15-rc7
References: bsc#1051510
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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
@@ -1007,6 +1007,8 @@ 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", 0);