netdev - Re: [PATCH bpf-next] bpf: use kfunc hooks instead of program types

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Message-ID: <202408201510.KPb6hCTA-lkp@intel.com>
Date: Tue, 20 Aug 2024 15:19:39 +0800
From: kernel test robot <lkp@...el.com>
To: Matteo Croce <technoboy85@...il.com>, bpf@...r.kernel.org,
	Jonathan Corbet <corbet@....net>, Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <bentiss@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>,
	Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
	Tejun Heo <tj@...nel.org>, Zefan Li <lizefan.x@...edance.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Koutný <mkoutny@...e.com>,
	Matt Bobrowski <mattbobrowski@...gle.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	David Ahern <dsahern@...nel.org>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Jozsef Kadlecsik <kadlec@...filter.org>,
	Steffen Klassert <steffen.klassert@...unet.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Shuah Khan <skhan@...uxfoundation.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	netdev@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-input@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH bpf-next] bpf: use kfunc hooks instead of program types

Hi Matteo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Matteo-Croce/bpf-use-kfunc-hooks-instead-of-program-types/20240820-080354
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20240820000245.61787-1-technoboy85%40gmail.com
patch subject: [PATCH bpf-next] bpf: use kfunc hooks instead of program types
config: i386-buildonly-randconfig-001-20240820 (https://download.01.org/0day-ci/archive/20240820/202408201510.KPb6hCTA-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240820/202408201510.KPb6hCTA-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408201510.KPb6hCTA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> net/core/filter.c:12084:38: warning: unused variable 'bpf_kfunc_set_sock_addr' [-Wunused-const-variable]
    12084 | static const struct btf_kfunc_id_set bpf_kfunc_set_sock_addr = {
          |                                      ^~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +/bpf_kfunc_set_sock_addr +12084 net/core/filter.c

05421aecd4ed65 Joanne Koong  2023-03-01  12083  
53e380d2144190 Daan De Meyer 2023-10-11 @12084  static const struct btf_kfunc_id_set bpf_kfunc_set_sock_addr = {
53e380d2144190 Daan De Meyer 2023-10-11  12085  	.owner = THIS_MODULE,
53e380d2144190 Daan De Meyer 2023-10-11  12086  	.set = &bpf_kfunc_check_set_sock_addr,
53e380d2144190 Daan De Meyer 2023-10-11  12087  };
53e380d2144190 Daan De Meyer 2023-10-11  12088  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki