netdev - Re: [PATCH net-next] netfilter: nf_tables: fix wrong pointer passed to PTR

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Date:   Wed, 1 Feb 2023 12:17:20 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     "Fernando F. Mancera" <ffmancera@...eup.net>
Cc:     Yang Yingliang <yangyingliang@...wei.com>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, kadlec@...filter.org, fw@...len.de,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Subject: Re: [PATCH net-next] netfilter: nf_tables: fix wrong pointer passed
 to PTR_ERR()

On Tue, Jan 24, 2023 at 02:16:55PM +0100, Fernando F. Mancera wrote:
> 
> 
> On 19/01/2023 08:51, Yang Yingliang wrote:
> > It should be 'chain' passed to PTR_ERR() in the error path
> > after calling nft_chain_lookup() in nf_tables_delrule().
> > 
> > Fixes: f80a612dd77c ("netfilter: nf_tables: add support to destroy operation")
> > Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> > ---
> >   net/netfilter/nf_tables_api.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
> > index 974b95dece1d..10264e98978b 100644
> > --- a/net/netfilter/nf_tables_api.c
> > +++ b/net/netfilter/nf_tables_api.c
> > @@ -3724,7 +3724,7 @@ static int nf_tables_delrule(struct sk_buff *skb, const struct nfnl_info *info,
> >   		chain = nft_chain_lookup(net, table, nla[NFTA_RULE_CHAIN],
> >   					 genmask);
> >   		if (IS_ERR(chain)) {
> > -			if (PTR_ERR(rule) == -ENOENT &&
> > +			if (PTR_ERR(chain) == -ENOENT &&
> >   			    NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_DESTROYRULE)
> >   				return 0;
> 
> Acked-by: Fernando Fernandez Mancera <ffmancera@...eup.net>

Applied, thanks