Patch "drm/ttm: check the return value of kzalloc" has been added to the 4.4-stable tree

Patch "drm/ttm: check the return value of kzalloc" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/ttm: check the return value of kzalloc

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-ttm-check-the-return-value-of-kzalloc.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Wed Feb 28 16:19:30 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 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>
---
 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");
 


Patches currently in stable-queue which might be from sxwjean@gmail.com are

queue-4.4/drm-ttm-check-the-return-value-of-kzalloc.patch