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@huawei.com>
Signed-off-by: Wu Guanghao <wuguanghao3@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/lib/support/argv_parse.c b/lib/support/argv_parse.c
index d22f6344c0142587a272244e4504eb2e0f301f96..1f50f9e57c7880b04f4c85aa1db26f5ce0cafcb9 100644 (file)
--- 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 (!argv)
+                       return -1;
        }
        argv[argc] = 0;
        if (ret_argc)