netdev - Re: [PATCH] SUNRPC: fix some memleaks in gssx_dec_option

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Message-ID: <20231224212754.GB5962@kernel.org>
Date: Sun, 24 Dec 2023 21:27:54 +0000
From: Simon Horman <horms@...nel.org>
To: Zhipeng Lu <alexious@....edu.cn>
Cc: Chuck Lever <chuck.lever@...cle.com>, Jeff Layton <jlayton@...nel.org>,
	Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>,
	Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>,
	Trond Myklebust <trond.myklebust@...merspace.com>,
	Anna Schumaker <anna@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Simo Sorce <simo@...hat.com>, linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] SUNRPC: fix some memleaks in gssx_dec_option_array

On Sun, Dec 24, 2023 at 04:24:22PM +0800, Zhipeng Lu wrote:
> The creds and oa->data need to be freed in the error-handling paths after
> there allocation. So this patch add these deallocations in the
> corresponding paths.
> 
> Fixes: 1d658336b05f ("SUNRPC: Add RPC based upcall mechanism for RPCGSS auth")
> Signed-off-by: Zhipeng Lu <alexious@....edu.cn>

...

> diff --git a/net/sunrpc/auth_gss/gss_rpc_xdr.c b/net/sunrpc/auth_gss/gss_rpc_xdr.c

...

> @@ -265,29 +265,41 @@ static int gssx_dec_option_array(struct xdr_stream *xdr,
>  
>  		/* option buffer */
>  		p = xdr_inline_decode(xdr, 4);
> -		if (unlikely(p == NULL))
> -			return -ENOSPC;
> +		if (unlikely(p == NULL)) {
> +			err = -ENOSPC

Hi Zhipeng Lu,

unfortunately the line above causes a build failure.

...