From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Fri, 27 Jan 2023 10:40:06 +0000 (+0000)
Subject: nvmem: brcm_nvram: Add check for kzalloc
X-Git-Tag: baikal/aarch64/sdk6.1~62
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=d01eeebc742cc19999816ec7b6bedc7d075b9820;p=kernel.git

nvmem: brcm_nvram: Add check for kzalloc

commit b0576ade3aaf24b376ea1a4406ae138e2a22b0c0 upstream.

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

Fixes: f45130fa14f0 ("nvmem: brcm_nvram: parse NVRAM content into NVMEM cells")
Cc: stable@vger.kernel.org
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230127104015.23839-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/nvmem/brcm_nvram.c b/drivers/nvmem/brcm_nvram.c
index 4441daa209651..7bd65fc2942e2 100644
--- a/drivers/nvmem/brcm_nvram.c
+++ b/drivers/nvmem/brcm_nvram.c
@@ -97,6 +97,9 @@ 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';