linux-kernel - [PATCH] netfilter: nf_tables: fix odd_ptr

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Date:   Thu, 11 Jan 2018 15:02:12 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Pablo Neira Ayuso <pablo@...filter.org>
cc:     Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kbuild-all@...org
Subject: [PATCH] netfilter: nf_tables: fix odd_ptr_err.cocci warnings

tree:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b4464bcab38d3f7fe995a7cb960eeac6889bec08
commit: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 [8286/9035] netfilter:
nf_tables: add flow table netlink frontend

The following is a 0-day report generated by Coccinelle.  But from the
line before, it looks like the fix is backwards, and the test shoud be on
flowtable.

julia


 nf_tables_api.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5419,7 +5419,7 @@ static int nf_tables_getflowtable(struct
 	flowtable = nf_tables_flowtable_lookup(table, nla[NFTA_FLOWTABLE_NAME],
 					       genmask);
 	if (IS_ERR(table))
-		return PTR_ERR(flowtable);
+		return PTR_ERR(table);

 	skb2 = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb2)