Re: [PATCH RFC bpf-next v1 5/6] net: netfilter: Add unstable CT lookup helper for XDP and TC-BPF

From: kernel test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: Re: [PATCH RFC bpf-next v1 5/6] net: netfilter: Add unstable CT lookup helper for XDP and TC-BPF
Date: Sun, 31 Oct 2021 01:27:12 +0800	[thread overview]
Message-ID: <202110310127.hQxVlRWD-lkp@intel.com> (raw)
In-Reply-To: <20211030144609.263572-6-memxor@gmail.com>

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Hi Kumar,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on bpf-next/master]

url:    https://github.com/0day-ci/linux/commits/Kumar-Kartikeya-Dwivedi/Introduce-unstable-CT-lookup-helpers/20211030-224748
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: ia64-defconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/f52e281f642e94cd13ce3dee075b76a562f22531
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Kumar-Kartikeya-Dwivedi/Introduce-unstable-CT-lookup-helpers/20211030-224748
        git checkout f52e281f642e94cd13ce3dee075b76a562f22531
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from net/core/filter.c:50:
   include/linux/btf.h:307:1: error: expected identifier or '(' before '{' token
     307 | {
         | ^
   net/core/filter.c: In function 'xdp_btf_struct_access':
>> net/core/filter.c:10012:24: error: implicit declaration of function 'btf_struct_access'; did you mean 'xdp_btf_struct_access'? [-Werror=implicit-function-declaration]
   10012 |                 return btf_struct_access(log, btf, t, off, size, atype, next_btf_id);
         |                        ^~~~~~~~~~~~~~~~~
         |                        xdp_btf_struct_access
   In file included from net/core/filter.c:50:
   net/core/filter.c: At top level:
   include/linux/btf.h:305:1: warning: 'bpf_get_mod_kfunc_return_type' used but never defined
     305 | bpf_get_mod_kfunc_return_type(struct kfunc_btf_id_list *klist, u32 kfunc_btf_id,
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +10012 net/core/filter.c

  9990	
  9991	static int xdp_btf_struct_access(struct bpf_verifier_log *log,
  9992					 const struct btf *btf,
  9993					 const struct btf_type *t, int off,
  9994					 int size, enum bpf_access_type atype,
  9995					 u32 *next_btf_id)
  9996	{
  9997		int ret = __BPF_REG_TYPE_MAX;
  9998		struct module *mod;
  9999	
 10000		if (atype != BPF_READ)
 10001			return -EACCES;
 10002	
 10003		if (btf_is_module(btf)) {
 10004			mod = btf_try_get_module(btf);
 10005			if (!mod)
 10006				return -ENXIO;
 10007			ret = bpf_btf_mod_struct_access(&xdp_kfunc_list, mod, log, btf, t, off, size,
 10008							atype, next_btf_id);
 10009			module_put(mod);
 10010		}
 10011		if (ret == __BPF_REG_TYPE_MAX)
 10012			return btf_struct_access(log, btf, t, off, size, atype, next_btf_id);
 10013		return ret;
 10014	}
 10015	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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