[modules:ppavlu-module-include 36/37] arch/s390/include/asm/module.h:49:21: error: implicit declaration of function 'strcmp'

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: [email protected]
CC: [email protected]
CC: Luis Chamberlain <[email protected]>
CC: Petr Pavlu <[email protected]>
CC: Sami Tolvanen <[email protected]>
CC: Daniel Gomez <[email protected]>
CC: [email protected]
TO: Petr Pavlu <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/modules/linux.git ppavlu-module-include
head:   fcbfd3cbe0a054838436812cc0b664f71ba1d0a4
commit: acb4d9bafad10e9712a74d71304a4f3a404eb4ec [36/37] WIP: module: Clean up includes in linux/module.h
:::::: branch date: 2 hours ago
:::::: commit date: 2 hours ago
config: s390-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260819/[email protected]/config)
compiler: s390x-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260819/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

All errors (new ones prefixed by >>):

   In file included from include/linux/module.h:28,
                    from ../../../drivers/nvdimm/namespace_devs.c:6:
   arch/s390/include/asm/module.h: In function 'find_section':
>> arch/s390/include/asm/module.h:49:21: error: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration]
      49 |                 if (strcmp(name, secstrs + s->sh_name) == 0)
         |                     ^~~~~~
   arch/s390/include/asm/module.h:6:1: note: include '<string.h>' or provide a declaration of 'strcmp'
       5 | #include <asm-generic/module.h>
     +++ |+#include <string.h>
       6 | 


vim +/strcmp +49 arch/s390/include/asm/module.h

^1da177e4c3f41 include/asm-s390/module.h      Linus Torvalds 2005-04-16  40  
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  41  static inline const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  42  					   const Elf_Shdr *sechdrs,
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  43  					   const char *name)
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  44  {
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  45  	const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  46  	const Elf_Shdr *s, *se;
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  47  
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  48  	for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13 @49  		if (strcmp(name, secstrs + s->sh_name) == 0)
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  50  			return s;
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  51  	}
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  52  	return NULL;
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  53  }
a919390e919420 arch/s390/include/asm/module.h Heiko Carstens 2024-09-13  54  

:::::: The code at line 49 was first introduced by commit
:::::: a919390e9194209bac163ec8e19520bdb3fb738b s390/module: Provide find_section() helper

:::::: TO: Heiko Carstens <[email protected]>
:::::: CC: Jason A. Donenfeld <[email protected]>

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