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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>,
	Paul Burton <paulburton@kernel.org>,
	Ralf Baechle <ralf@linux-mips.org>,
	Huacai Chen <chenhc@lemote.com>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	linux-mips@vger.kernel.org, Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.5 064/542] MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
Date: Fri, 14 Feb 2020 10:40:56 -0500
Message-ID: <20200214154854.6746-64-sashal@kernel.org> (raw)
In-Reply-To: <20200214154854.6746-1-sashal@kernel.org>

From: Tiezhu Yang <yangtiezhu@loongson.cn>

[ Upstream commit 72d052e28d1d2363f9107be63ef3a3afdea6143c ]

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
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/loongson64/platform.c | 3 +++
 1 file changed, 3 insertions(+)

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];
-- 
2.20.1


       reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200214154854.6746-1-sashal@kernel.org>
2020-02-14 15:40 ` Sasha Levin [this message]
2020-02-14 15:45 ` [PATCH AUTOSEL 5.5 354/542] MIPS: ralink: dts: gardena_smart_gateway_mt7688: Limit UART1 Sasha Levin

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