From: Tiezhu Yang <yangtiezhu@loongson.cn>
Date: Fri, 10 Jan 2020 01:30:42 +0000 (+0800)
Subject: MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=72d052e28d1d2363f9107be63ef3a3afdea6143c;p=linux.git

MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()

If kzalloc fails, it should return -ENOMEM, otherwise may trigger a NULL
pointer dereference.

Fixes: 3adeb2566b9b ("MIPS: Loongson: Improve LEFI firmware interface")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---

diff --git a/arch/mips/loongson64/platform.c b/arch/mips/loongson64/platform.c
index 13f3404f00300..9674ae1361a85 100644
--- a/arch/mips/loongson64/platform.c
+++ b/arch/mips/loongson64/platform.c
@@ -27,6 +27,9 @@ static int __init loongson3_platform_init(void)
 			continue;
 
 		pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
+		if (!pdev)
+			return -ENOMEM;
+
 		pdev->name = loongson_sysconf.sensors[i].name;
 		pdev->id = loongson_sysconf.sensors[i].id;
 		pdev->dev.platform_data = &loongson_sysconf.sensors[i];