Re: [PATCHv3 9/9] arm64/kexec: Add PE image format support

[kernel test robot <lkp@intel.com>]

Hi Pingfan,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/net]
[also build test ERROR on bpf/master arm64/for-next/core v6.15]
[cannot apply to bpf-next/master linus/master next-20250529]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Pingfan-Liu/kexec_file-Make-kexec_image_load_default-global-visible/20250529-122124
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net
patch link:    https://lore.kernel.org/r/20250529041744.16458-10-piliu%40redhat.com
patch subject: [PATCHv3 9/9] arm64/kexec: Add PE image format support
config: arm64-randconfig-004-20250529 (https://download.01.org/0day-ci/archive/20250529/202505292305.zHTx5StD-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250529/202505292305.zHTx5StD-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/202505292305.zHTx5StD-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from kernel/kexec_bpf/kexec_pe_parser_bpf.lskel.h:6,
                    from kernel/kexec_pe_image.c:25:
   tools/lib/bpf/skel_internal.h: In function 'skel_finalize_map_data':
   tools/lib/bpf/skel_internal.h:155:15: error: implicit declaration of function 'bpf_map_get'; did you mean 'bpf_map_put'? [-Werror=implicit-function-declaration]
     155 |         map = bpf_map_get(fd);
         |               ^~~~~~~~~~~
         |               bpf_map_put
   tools/lib/bpf/skel_internal.h:155:13: warning: assignment to 'struct bpf_map *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     155 |         map = bpf_map_get(fd);
         |             ^
   kernel/kexec_pe_image.c: In function 'kexec_bpf_prog_run_init':
>> kernel/kexec_pe_image.c:283:16: error: implicit declaration of function 'register_btf_fmodret_id_set'; did you mean 'register_btf_kfunc_id_set'? [-Werror=implicit-function-declaration]
     283 |         return register_btf_fmodret_id_set(&kexec_modify_return_set);
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                register_btf_kfunc_id_set
   kernel/kexec_pe_image.c: In function 'pe_image_load':
   kernel/kexec_pe_image.c:325:44: warning: variable 'cmdline_sz' set but not used [-Wunused-but-set-variable]
     325 |         unsigned long linux_sz, initrd_sz, cmdline_sz, bpf_sz;
         |                                            ^~~~~~~~~~
   cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for KEXEC_PE_IMAGE
   Depends on [n]: KEXEC_FILE [=y] && DEBUG_INFO_BTF [=n] && BPF_SYSCALL [=n]
   Selected by [y]:
   - ARCH_SELECTS_KEXEC_FILE [=y] && KEXEC_FILE [=y]


vim +283 kernel/kexec_pe_image.c

536de0ba3b982c Pingfan Liu 2025-05-29  280  
536de0ba3b982c Pingfan Liu 2025-05-29  281  static int __init kexec_bpf_prog_run_init(void)
536de0ba3b982c Pingfan Liu 2025-05-29  282  {
536de0ba3b982c Pingfan Liu 2025-05-29 @283  	return register_btf_fmodret_id_set(&kexec_modify_return_set);
536de0ba3b982c Pingfan Liu 2025-05-29  284  }
536de0ba3b982c Pingfan Liu 2025-05-29  285  late_initcall(kexec_bpf_prog_run_init);
536de0ba3b982c Pingfan Liu 2025-05-29  286  

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