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Date: Sun, 5 Nov 2023 13:16:09 +0800
From: kernel test robot <lkp@...el.com>
To: thinker.li@...il.com, bpf@...r.kernel.org, ast@...nel.org,
	martin.lau@...ux.dev, song@...nel.org, kernel-team@...a.com,
	andrii@...nel.org, drosen@...gle.com
Cc: oe-kbuild-all@...ts.linux.dev, sinquersw@...il.com, kuifeng@...a.com,
	Kui-Feng Lee <thinker.li@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH bpf-next v10 10/13] bpf, net: switch to dynamic
 registration

Hi,

kernel test robot noticed the following build errors:

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

url:    https://github.com/intel-lab-lkp/linux/commits/thinker-li-gmail-com/bpf-refactory-struct_ops-type-initialization-to-a-function/20231104-072528
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20231103232202.3664407-11-thinker.li%40gmail.com
patch subject: [PATCH bpf-next v10 10/13] bpf, net: switch to dynamic registration
config: riscv-randconfig-002-20231105 (https://download.01.org/0day-ci/archive/20231105/202311051202.DeubcWTl-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231105/202311051202.DeubcWTl-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/202311051202.DeubcWTl-lkp@intel.com/

All errors (new ones prefixed by >>):

   riscv64-linux-ld: kernel/bpf/btf.o: in function `btf_array_show':
>> kernel/bpf/btf.c:3044:(.text+0x6c38): undefined reference to `bpf_struct_ops_desc_init'


vim +3044 kernel/bpf/btf.c

31d0bc81637d8d Alan Maguire     2020-09-28  3032  
31d0bc81637d8d Alan Maguire     2020-09-28  3033  static void btf_array_show(const struct btf *btf, const struct btf_type *t,
31d0bc81637d8d Alan Maguire     2020-09-28  3034  			   u32 type_id, void *data, u8 bits_offset,
31d0bc81637d8d Alan Maguire     2020-09-28  3035  			   struct btf_show *show)
31d0bc81637d8d Alan Maguire     2020-09-28  3036  {
31d0bc81637d8d Alan Maguire     2020-09-28  3037  	const struct btf_member *m = show->state.member;
31d0bc81637d8d Alan Maguire     2020-09-28  3038  
31d0bc81637d8d Alan Maguire     2020-09-28  3039  	/*
31d0bc81637d8d Alan Maguire     2020-09-28  3040  	 * First check if any members would be shown (are non-zero).
31d0bc81637d8d Alan Maguire     2020-09-28  3041  	 * See comments above "struct btf_show" definition for more
31d0bc81637d8d Alan Maguire     2020-09-28  3042  	 * details on how this works at a high-level.
31d0bc81637d8d Alan Maguire     2020-09-28  3043  	 */
31d0bc81637d8d Alan Maguire     2020-09-28 @3044  	if (show->state.depth > 0 && !(show->flags & BTF_SHOW_ZERO)) {
31d0bc81637d8d Alan Maguire     2020-09-28  3045  		if (!show->state.depth_check) {
31d0bc81637d8d Alan Maguire     2020-09-28  3046  			show->state.depth_check = show->state.depth + 1;
31d0bc81637d8d Alan Maguire     2020-09-28  3047  			show->state.depth_to_show = 0;
31d0bc81637d8d Alan Maguire     2020-09-28  3048  		}
31d0bc81637d8d Alan Maguire     2020-09-28  3049  		__btf_array_show(btf, t, type_id, data, bits_offset, show);
31d0bc81637d8d Alan Maguire     2020-09-28  3050  		show->state.member = m;
31d0bc81637d8d Alan Maguire     2020-09-28  3051  
31d0bc81637d8d Alan Maguire     2020-09-28  3052  		if (show->state.depth_check != show->state.depth + 1)
31d0bc81637d8d Alan Maguire     2020-09-28  3053  			return;
31d0bc81637d8d Alan Maguire     2020-09-28  3054  		show->state.depth_check = 0;
31d0bc81637d8d Alan Maguire     2020-09-28  3055  
31d0bc81637d8d Alan Maguire     2020-09-28  3056  		if (show->state.depth_to_show <= show->state.depth)
31d0bc81637d8d Alan Maguire     2020-09-28  3057  			return;
31d0bc81637d8d Alan Maguire     2020-09-28  3058  		/*
31d0bc81637d8d Alan Maguire     2020-09-28  3059  		 * Reaching here indicates we have recursed and found
31d0bc81637d8d Alan Maguire     2020-09-28  3060  		 * non-zero array member(s).
31d0bc81637d8d Alan Maguire     2020-09-28  3061  		 */
31d0bc81637d8d Alan Maguire     2020-09-28  3062  	}
31d0bc81637d8d Alan Maguire     2020-09-28  3063  	__btf_array_show(btf, t, type_id, data, bits_offset, show);
b00b8daec828dd Martin KaFai Lau 2018-04-18  3064  }
b00b8daec828dd Martin KaFai Lau 2018-04-18  3065  

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

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