Messages in this thread | | | Date | Fri, 27 May 2022 15:03:52 +0800 | From | kernel test robot <> | Subject | [netfilter-nf-next:testing 6/11] net/netfilter/nf_nat_proto.c:721:25: warning: unused variable 'skb' |
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tree: git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next.git testing head: 1baa240a3c6507449f4a3cd150dddacf69d95fb5 commit: 93d6b481397f4c62da1568b463a4d4b254578c37 [6/11] netfilter: make hook functions accept only one argument config: i386-randconfig-a014-20211029 (https://download.01.org/0day-ci/archive/20220527/202205271540.880v8PNJ-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next.git/commit/?id=93d6b481397f4c62da1568b463a4d4b254578c37 git remote add netfilter-nf-next git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next.git git fetch --no-tags netfilter-nf-next testing git checkout 93d6b481397f4c62da1568b463a4d4b254578c37 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/netfilter/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
net/netfilter/nf_nat_proto.c: In function 'nf_nat_ipv4_out': >> net/netfilter/nf_nat_proto.c:721:25: warning: unused variable 'skb' [-Wunused-variable] 721 | struct sk_buff *skb = state->skb; | ^~~ net/netfilter/nf_nat_proto.c: In function 'nf_nat_ipv6_out': net/netfilter/nf_nat_proto.c:960:25: warning: unused variable 'skb' [-Wunused-variable] 960 | struct sk_buff *skb = state->skb; | ^~~
vim +/skb +721 net/netfilter/nf_nat_proto.c
717 718 static unsigned int 719 nf_nat_ipv4_out(const struct nf_hook_state *state) 720 { > 721 struct sk_buff *skb = state->skb; 722 #ifdef CONFIG_XFRM 723 const struct nf_conn *ct; 724 enum ip_conntrack_info ctinfo; 725 int err; 726 #endif 727 unsigned int ret; 728 729 ret = nf_nat_ipv4_fn(state); 730 #ifdef CONFIG_XFRM 731 if (ret != NF_ACCEPT) 732 return ret; 733 734 if (IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED) 735 return ret; 736 737 ct = nf_ct_get(skb, &ctinfo); 738 if (ct) { 739 enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); 740 741 if (ct->tuplehash[dir].tuple.src.u3.ip != 742 ct->tuplehash[!dir].tuple.dst.u3.ip || 743 (ct->tuplehash[dir].tuple.dst.protonum != IPPROTO_ICMP && 744 ct->tuplehash[dir].tuple.src.u.all != 745 ct->tuplehash[!dir].tuple.dst.u.all)) { 746 err = nf_xfrm_me_harder(state->net, skb, AF_INET); 747 if (err < 0) 748 ret = NF_DROP_ERR(err); 749 } 750 } 751 #endif 752 return ret; 753 } 754
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