From: kernel test robot <lkp@intel.com>
To: Binbin Deng <18983559317@163.com>,
dsahern@kernel.org, idosch@nvidia.com, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
horms@kernel.org
Cc: oe-kbuild-all@lists.linux.dev, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, Binbin Deng <18983559317@163.com>
Subject: Re: [PATCH net v1] igmp: use copy-on-write RCU updates in ip_mc_source()
Date: Mon, 2 Nov 2026 23:59:12 +0800 [thread overview]
Message-ID: <202611022340.iFWNzlRb-lkp@intel.com> (raw)
In-Reply-To: <20261102095312.47767-1-18983559317@163.com>
Hi Binbin,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net/main]
url: https://github.com/intel-lab-lkp/linux/commits/Binbin-Deng/igmp-use-copy-on-write-RCU-updates-in-ip_mc_source/20261102-175312
base: net/main
patch link: https://lore.kernel.org/r/20261102095312.47767-1-18983559317%40163.com
patch subject: [PATCH net v1] igmp: use copy-on-write RCU updates in ip_mc_source()
config: nios2-defconfig (https://download.01.org/0day-ci/archive/20261102/202611022340.iFWNzlRb-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261102/202611022340.iFWNzlRb-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202611022340.iFWNzlRb-lkp@intel.com/
All warnings (new ones prefixed by >>):
net/ipv4/igmp.c: In function 'ip_mc_source':
net/ipv4/igmp.c:2976:34: error: invalid storage class for function 'igmp_mc_get_first'
2976 | static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq)
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:2998:27: error: invalid storage class for function 'igmp_mc_get_next'
2998 | static struct ip_mc_list *igmp_mc_get_next(struct seq_file *seq, struct ip_mc_list *im)
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3017:27: error: invalid storage class for function 'igmp_mc_get_idx'
3017 | static struct ip_mc_list *igmp_mc_get_idx(struct seq_file *seq, loff_t pos)
| ^~~~~~~~~~~~~~~
net/ipv4/igmp.c:3026:14: error: invalid storage class for function 'igmp_mc_seq_start'
3026 | static void *igmp_mc_seq_start(struct seq_file *seq, loff_t *pos)
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3033:14: error: invalid storage class for function 'igmp_mc_seq_next'
3033 | static void *igmp_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3044:13: error: invalid storage class for function 'igmp_mc_seq_stop'
3044 | static void igmp_mc_seq_stop(struct seq_file *seq, void *v)
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3054:12: error: invalid storage class for function 'igmp_mc_seq_show'
3054 | static int igmp_mc_seq_show(struct seq_file *seq, void *v)
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3094:25: error: initializer element is not constant
3094 | .start = igmp_mc_seq_start,
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3094:25: note: (near initialization for 'igmp_mc_seq_ops.start')
net/ipv4/igmp.c:3095:25: error: initializer element is not constant
3095 | .next = igmp_mc_seq_next,
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3095:25: note: (near initialization for 'igmp_mc_seq_ops.next')
net/ipv4/igmp.c:3096:25: error: initializer element is not constant
3096 | .stop = igmp_mc_seq_stop,
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3096:25: note: (near initialization for 'igmp_mc_seq_ops.stop')
net/ipv4/igmp.c:3097:25: error: initializer element is not constant
3097 | .show = igmp_mc_seq_show,
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3097:25: note: (near initialization for 'igmp_mc_seq_ops.show')
net/ipv4/igmp.c:3109:34: error: invalid storage class for function 'igmp_mcf_get_first'
3109 | static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
| ^~~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3138:27: error: invalid storage class for function 'igmp_mcf_get_next'
3138 | static struct ip_sf_list *igmp_mcf_get_next(struct seq_file *seq, struct ip_sf_list *psf)
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3164:27: error: invalid storage class for function 'igmp_mcf_get_idx'
3164 | static struct ip_sf_list *igmp_mcf_get_idx(struct seq_file *seq, loff_t pos)
| ^~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3173:14: error: invalid storage class for function 'igmp_mcf_seq_start'
3173 | static void *igmp_mcf_seq_start(struct seq_file *seq, loff_t *pos)
| ^~~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3180:14: error: invalid storage class for function 'igmp_mcf_seq_next'
3180 | static void *igmp_mcf_seq_next(struct seq_file *seq, void *v, loff_t *pos)
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3191:13: error: invalid storage class for function 'igmp_mcf_seq_stop'
3191 | static void igmp_mcf_seq_stop(struct seq_file *seq, void *v)
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3204:12: error: invalid storage class for function 'igmp_mcf_seq_show'
3204 | static int igmp_mcf_seq_show(struct seq_file *seq, void *v)
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3225:25: error: initializer element is not constant
3225 | .start = igmp_mcf_seq_start,
| ^~~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3225:25: note: (near initialization for 'igmp_mcf_seq_ops.start')
net/ipv4/igmp.c:3226:25: error: initializer element is not constant
3226 | .next = igmp_mcf_seq_next,
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3226:25: note: (near initialization for 'igmp_mcf_seq_ops.next')
net/ipv4/igmp.c:3227:25: error: initializer element is not constant
3227 | .stop = igmp_mcf_seq_stop,
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3227:25: note: (near initialization for 'igmp_mcf_seq_ops.stop')
net/ipv4/igmp.c:3228:25: error: initializer element is not constant
3228 | .show = igmp_mcf_seq_show,
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3228:25: note: (near initialization for 'igmp_mcf_seq_ops.show')
net/ipv4/igmp.c:3231:23: error: invalid storage class for function 'igmp_net_init'
3231 | static int __net_init igmp_net_init(struct net *net)
| ^~~~~~~~~~~~~
net/ipv4/igmp.c:3262:24: error: invalid storage class for function 'igmp_net_exit'
3262 | static void __net_exit igmp_net_exit(struct net *net)
| ^~~~~~~~~~~~~
net/ipv4/igmp.c:3270:17: error: initializer element is not constant
3270 | .init = igmp_net_init,
| ^~~~~~~~~~~~~
net/ipv4/igmp.c:3270:17: note: (near initialization for 'igmp_net_ops.init')
net/ipv4/igmp.c:3271:17: error: initializer element is not constant
3271 | .exit = igmp_net_exit,
| ^~~~~~~~~~~~~
net/ipv4/igmp.c:3271:17: note: (near initialization for 'igmp_net_ops.exit')
net/ipv4/igmp.c:3275:12: error: invalid storage class for function 'igmp_netdev_event'
3275 | static int igmp_netdev_event(struct notifier_block *this,
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3294:26: error: initializer element is not constant
3294 | .notifier_call = igmp_netdev_event,
| ^~~~~~~~~~~~~~~~~
net/ipv4/igmp.c:3294:26: note: (near initialization for 'igmp_notifier.notifier_call')
net/ipv4/igmp.c:3316:1: error: expected declaration or statement at end of input
3316 | }
| ^
>> net/ipv4/igmp.c:3317: warning: control reaches end of non-void function [-Wreturn-type]
At top level:
>> net/ipv4/igmp.c:3297:12: warning: 'igmp_mc_init' defined but not used [-Wunused-function]
3297 | int __init igmp_mc_init(void)
| ^~~~~~~~~~~~
>> net/ipv4/igmp.c:2923:5: warning: 'ip_check_mc_rcu' defined but not used [-Wunused-function]
2923 | int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u8 proto)
| ^~~~~~~~~~~~~~~
>> net/ipv4/igmp.c:2897:6: warning: 'ip_mc_drop_socket' defined but not used [-Wunused-function]
2897 | void ip_mc_drop_socket(struct sock *sk)
| ^~~~~~~~~~~~~~~~~
>> net/ipv4/igmp.c:2849:5: warning: 'ip_mc_sf_allow' defined but not used [-Wunused-function]
2849 | int ip_mc_sf_allow(const struct sock *sk, __be32 loc_addr, __be32 rmt_addr,
| ^~~~~~~~~~~~~~
>> net/ipv4/igmp.c:2800:5: warning: 'ip_mc_gsfget' defined but not used [-Wunused-function]
2800 | int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
| ^~~~~~~~~~~~
>> net/ipv4/igmp.c:2736:5: warning: 'ip_mc_msfget' defined but not used [-Wunused-function]
2736 | int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf, sockopt_t *opt)
| ^~~~~~~~~~~~
>> net/ipv4/igmp.c:2645:5: warning: 'ip_mc_msfilter' defined but not used [-Wunused-function]
2645 | int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
| ^~~~~~~~~~~~~~
vim +3317 net/ipv4/igmp.c
4aa5dee4d99978 Jiri Pirko 2013-07-20 3292
4aa5dee4d99978 Jiri Pirko 2013-07-20 3293 static struct notifier_block igmp_notifier = {
4aa5dee4d99978 Jiri Pirko 2013-07-20 @3294 .notifier_call = igmp_netdev_event,
4aa5dee4d99978 Jiri Pirko 2013-07-20 3295 };
4aa5dee4d99978 Jiri Pirko 2013-07-20 3296
72c1d3bdd5bf10 WANG Cong 2014-01-10 @3297 int __init igmp_mc_init(void)
7091e728c57015 Alexey Dobriyan 2008-12-25 3298 {
72c1d3bdd5bf10 WANG Cong 2014-01-10 3299 #if defined(CONFIG_PROC_FS)
4aa5dee4d99978 Jiri Pirko 2013-07-20 3300 int err;
4aa5dee4d99978 Jiri Pirko 2013-07-20 3301
4aa5dee4d99978 Jiri Pirko 2013-07-20 3302 err = register_pernet_subsys(&igmp_net_ops);
4aa5dee4d99978 Jiri Pirko 2013-07-20 3303 if (err)
4aa5dee4d99978 Jiri Pirko 2013-07-20 3304 return err;
4aa5dee4d99978 Jiri Pirko 2013-07-20 3305 err = register_netdevice_notifier(&igmp_notifier);
4aa5dee4d99978 Jiri Pirko 2013-07-20 3306 if (err)
4aa5dee4d99978 Jiri Pirko 2013-07-20 3307 goto reg_notif_fail;
4aa5dee4d99978 Jiri Pirko 2013-07-20 3308 return 0;
4aa5dee4d99978 Jiri Pirko 2013-07-20 3309
4aa5dee4d99978 Jiri Pirko 2013-07-20 3310 reg_notif_fail:
4aa5dee4d99978 Jiri Pirko 2013-07-20 3311 unregister_pernet_subsys(&igmp_net_ops);
4aa5dee4d99978 Jiri Pirko 2013-07-20 3312 return err;
72c1d3bdd5bf10 WANG Cong 2014-01-10 3313 #else
72c1d3bdd5bf10 WANG Cong 2014-01-10 3314 return register_netdevice_notifier(&igmp_notifier);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3315 #endif
72c1d3bdd5bf10 WANG Cong 2014-01-10 3316 }
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2026-11-02 15:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-02 9:53 Binbin Deng
2026-11-02 9:59 ` netdev-bot+sinfo
2026-11-02 15:59 ` kernel test robot [this message]
2026-11-02 17:49 ` kernel test robot
2026-11-02 18:10 ` kernel test robot
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