linux-ext4 - [PATCH 07/12] argv_parse: check return value of malloc in argv

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Message-ID: <5d711bbc-50bb-c8a5-a118-e22a691c0d7f@huawei.com>
Date:   Mon, 24 May 2021 19:23:57 +0800
From:   Wu Guanghao <wuguanghao3@...wei.com>
To:     <linux-ext4@...r.kernel.org>
CC:     <liuzhiqiang26@...wei.com>, <linfeilong@...wei.com>
Subject: [PATCH 07/12] argv_parse: check return value of malloc in
 argv_parse()

In argv_parse(), return value of malloc should be checked
whether it is NULL, otherwise, it may cause a segfault error.

Signed-off-by: Zhiqiang Liu <liuzhiqiang26@...wei.com>
Signed-off-by: Wu Guanghao <wuguanghao3@...wei.com>
---
 lib/support/argv_parse.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/support/argv_parse.c b/lib/support/argv_parse.c
index d22f6344..1ef9c014 100644
--- a/lib/support/argv_parse.c
+++ b/lib/support/argv_parse.c
@@ -116,6 +116,8 @@ int argv_parse(char *in_buf, int *ret_argc, char ***ret_argv)
 	if (argv == 0) {
 		argv = malloc(sizeof(char *));
 		free(buf);
+		if (!arcv)
+			return -1;
 	}
 	argv[argc] = 0;
 	if (ret_argc)
--