Re: [PATCHv7 08/13] kexec_file: Factor out routine to find a symbol in ELF

[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-next/master bpf/master akpm-mm/mm-nonmm-unstable linus/master v7.0-rc5 next-20260320]
[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/bpf-Introduce-kfuncs-to-parser-buffer-content/20260323-084500
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net
patch link:    https://lore.kernel.org/r/20260322014402.8815-9-piliu%40redhat.com
patch subject: [PATCHv7 08/13] kexec_file: Factor out routine to find a symbol in ELF
config: x86_64-randconfig-002-20260323 (https://download.01.org/0day-ci/archive/20260323/202603231812.ZGRRlzPe-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260323/202603231812.ZGRRlzPe-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/202603231812.ZGRRlzPe-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/kexec_file.c:1276:23: error: redefinition of 'kexec_purgatory_find_symbol'
    1276 | static const Elf_Sym *kexec_purgatory_find_symbol(struct purgatory_info *pi,
         |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/kexec_file.c:958:23: note: previous definition of 'kexec_purgatory_find_symbol' with type 'const Elf64_Sym *(struct purgatory_info *, const char *)' {aka 'const struct elf64_sym *(struct purgatory_info *, const char *)'}
     958 | static const Elf_Sym *kexec_purgatory_find_symbol(struct purgatory_info *pi,
         |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/kexec_purgatory_find_symbol +1276 kernel/kexec_file.c

  1268	
  1269	/*
  1270	 * kexec_purgatory_find_symbol - find a symbol in the purgatory
  1271	 * @pi:		Purgatory to search in.
  1272	 * @name:	Name of the symbol.
  1273	 *
  1274	 * Return: pointer to symbol in read-only symtab on success, NULL on error.
  1275	 */
> 1276	static const Elf_Sym *kexec_purgatory_find_symbol(struct purgatory_info *pi,
  1277							  const char *name)
  1278	{
  1279		if (!pi->ehdr)
  1280			return NULL;
  1281	
  1282		return elf_find_symbol(pi->ehdr, name);
  1283	}
  1284	

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