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Date: Tue, 2 Jan 2024 10:13:17 +0800
From: Tony Lu <tonylu@linux.alibaba.com>
To: Markus Elfring <Markus.Elfring@web.de>
Cc: linux-s390@vger.kernel.org, netdev@vger.kernel.org,
	kernel-janitors@vger.kernel.org,
	"David S. Miller" <davem@davemloft.net>,
	"D. Wythe" <alibuda@linux.alibaba.com>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Jan Karcher <jaka@linux.ibm.com>,
	Paolo Abeni <pabeni@redhat.com>, Wen Gu <guwen@linux.alibaba.com>,
	Wenjia Zhang <wenjia@linux.ibm.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] net/smc: Return directly after a failed kzalloc() in
 smc_fill_gid_list()
Message-ID: <ZZNxPadDoJ6gxRmb@TONYMAC-ALIBABA.local>
Reply-To: Tony Lu <tonylu@linux.alibaba.com>
References: <8ba404fd-7f41-44a9-9869-84f3af18fb46@web.de>
 <f02303c3-5968-48c3-990b-be0be8a66521@web.de>
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In-Reply-To: <f02303c3-5968-48c3-990b-be0be8a66521@web.de>

On Sun, Dec 31, 2023 at 03:58:15PM +0100, Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Sun, 31 Dec 2023 15:15:19 +0100
> 
> The kfree() function was called in one case by
> the smc_fill_gid_list() function during error handling
> even if the passed variable contained a null pointer.
> This issue was detected by using the Coccinelle software.
> 
> Thus return directly after a call of the function "kzalloc" failed
> at the beginning.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>

LGTM, thank you.

Also please add net tag in subject and fixes tag in commit body.

Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>

> ---
>  net/smc/af_smc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
> index 7fc2f3c6d248..a396a9977ba9 100644
> --- a/net/smc/af_smc.c
> +++ b/net/smc/af_smc.c
> @@ -1180,7 +1180,7 @@ void smc_fill_gid_list(struct smc_link_group *lgr,
> 
>  	alt_ini = kzalloc(sizeof(*alt_ini), GFP_KERNEL);
>  	if (!alt_ini)
> -		goto out;
> +		return;
> 
>  	alt_ini->vlan_id = lgr->vlan_id;
>  	alt_ini->check_smcrv2 = true;
> --
> 2.43.0