netdev - Re: [PATCH] bridge: fix memory leak in error path

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Message-ID: <385b4ead-8d43-4845-ac66-4218b285be32@blackwall.org>
Date: Mon, 25 Nov 2024 11:19:47 +0200
From: Nikolay Aleksandrov <razor@...ckwall.org>
To: Minhong He <heminhong@...inos.cn>, stephen@...workplumber.org,
 netdev@...r.kernel.org
Subject: Re: [PATCH] bridge: fix memory leak in error path

On 25/11/2024 09:31, Minhong He wrote:
> When 'rtnl_dump_filter()' fails to process, it will cause memory leak.
> 
> Signed-off-by: Minhong He <heminhong@...inos.cn>
> ---
>  bridge/mst.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 

Please CC bridge maintainers on related patches. This is a patch for iproute2
and should have it in the subject (e.g. PATCH iproute2). Also there's undocumented
and unrelated cosmetic fix (removal of extra tab below).

> diff --git a/bridge/mst.c b/bridge/mst.c
> index 32f64aba..a85e6188 100644
> --- a/bridge/mst.c
> +++ b/bridge/mst.c
> @@ -153,6 +153,7 @@ static int mst_show(int argc, char **argv)
>  
>  	if (rtnl_dump_filter(&rth, print_msts, stdout) < 0) {
>  		fprintf(stderr, "Dump terminated\n");
> +		delete_json_obj();
>  		return -1;
>  	}
>  
> @@ -214,7 +215,7 @@ static int mst_set(int argc, char **argv)
>  	state = strtol(s, &endptr, 10);
>  	if (!(*s != '\0' && *endptr == '\0'))
>  		state = parse_stp_state(s);
> -	
> +

This change is not documented and unrelated cosmetic fix.

>  	if (state < 0 || state > UINT8_MAX) {
>  		fprintf(stderr, "Error: invalid STP port state\n");
>  		return -1;