linux-kernel - [PATCH 01/10] nvmem: brcm_nvram: Add check for kzalloc

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Message-Id: <20230127104015.23839-2-srinivas.kandagatla@linaro.org>
Date:   Fri, 27 Jan 2023 10:40:06 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>, stable@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 01/10] nvmem: brcm_nvram: Add check for kzalloc

From: Jiasheng Jiang <jiasheng@...as.ac.cn>

Add the check for the return value of kzalloc in order to avoid
NULL pointer dereference.

Cc: stable@...r.kernel.org
Fixes: 6e977eaa8280 ("nvmem: brcm_nvram: parse NVRAM content into NVMEM cells")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/nvmem/brcm_nvram.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/nvmem/brcm_nvram.c b/drivers/nvmem/brcm_nvram.c
index 34130449f2d2..39aa27942f28 100644
--- a/drivers/nvmem/brcm_nvram.c
+++ b/drivers/nvmem/brcm_nvram.c
@@ -98,6 +98,9 @@ static int brcm_nvram_parse(struct brcm_nvram *priv)
 	len = le32_to_cpu(header.len);
 
 	data = kzalloc(len, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
 	memcpy_fromio(data, priv->base, len);
 	data[len - 1] = '\0';
 
-- 
2.25.1