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

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Message-ID: <c9894a08-c676-2700-7069-de1ec083fb74@huawei.com>
Date:   Tue, 25 May 2021 10:32:24 +0800
From:   Wu Guanghao <wuguanghao3@...wei.com>
To:     <linux-ext4@...r.kernel.org>
CC:     <liuzhiqiang26@...wei.com>, <linfeilong@...wei.com>
Subject: Re: [PATCH 07/12] argv_parse: check return value of malloc in
 argv_parse()

There is a problem with this patch. "argv" is spelled as "arcv".
This problem will be resolved in the v2 version.

在 2021/5/24 19:23, Wu Guanghao 写道:
> 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)
>