[android-common:android15-6.6 0/1] fs/binfmt_misc.c:95: warning: Excess function parameter 'misc' description in 'search_binfmt_handler'

[android-common:android15-6.6 0/1] fs/binfmt_misc.c:95: warning: Excess function parameter 'misc' description in 'search_binfmt_handler'

[kernel test robot]

Hi Christian,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android15-6.6
head:   eed7f8d4a5572c294712b683d6b4890a3b5e1267
commit: 5ee7df8143c1bf81086dda152b05883ccb0b09da [0/1] binfmt_misc: cleanup on filesystem umount
config: i386-randconfig-015-20251210 (https://download.01.org/0day-ci/archive/20251211/202512110306.NEASEgZ6-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512110306.NEASEgZ6-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/202512110306.NEASEgZ6-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/binfmt_misc.c:95: warning: Excess function parameter 'misc' description in 'search_binfmt_handler'
   fs/binfmt_misc.c:144: warning: Excess function parameter 'misc' description in 'get_binfmt_handler'
   fs/binfmt_misc.c:681: warning: Excess function parameter 'misc' description in 'remove_binfmt_handler'


vim +95 fs/binfmt_misc.c

bbaecc088245e8 Mike Frysinger    2014-10-13   83  
5ee7df8143c1bf Christian Brauner 2021-10-28   84  /**
5ee7df8143c1bf Christian Brauner 2021-10-28   85   * search_binfmt_handler - search for a binary handler for @bprm
5ee7df8143c1bf Christian Brauner 2021-10-28   86   * @misc: handle to binfmt_misc instance
5ee7df8143c1bf Christian Brauner 2021-10-28   87   * @bprm: binary for which we are looking for a handler
5ee7df8143c1bf Christian Brauner 2021-10-28   88   *
5ee7df8143c1bf Christian Brauner 2021-10-28   89   * Search for a binary type handler for @bprm in the list of registered binary
5ee7df8143c1bf Christian Brauner 2021-10-28   90   * type handlers.
5ee7df8143c1bf Christian Brauner 2021-10-28   91   *
5ee7df8143c1bf Christian Brauner 2021-10-28   92   * Return: binary type list entry on success, NULL on failure
^1da177e4c3f41 Linus Torvalds    2005-04-16   93   */
5ee7df8143c1bf Christian Brauner 2021-10-28   94  static Node *search_binfmt_handler(struct linux_binprm *bprm)
^1da177e4c3f41 Linus Torvalds    2005-04-16  @95  {
^1da177e4c3f41 Linus Torvalds    2005-04-16   96  	char *p = strrchr(bprm->interp, '.');
5ee7df8143c1bf Christian Brauner 2021-10-28   97  	Node *e;
^1da177e4c3f41 Linus Torvalds    2005-04-16   98  
6b899c4e9a049d Mike Frysinger    2014-12-10   99  	/* Walk all the registered handlers. */
5ee7df8143c1bf Christian Brauner 2021-10-28  100  	list_for_each_entry(e, &entries, list) {
^1da177e4c3f41 Linus Torvalds    2005-04-16  101  		char *s;
^1da177e4c3f41 Linus Torvalds    2005-04-16  102  		int j;
^1da177e4c3f41 Linus Torvalds    2005-04-16  103  
6b899c4e9a049d Mike Frysinger    2014-12-10  104  		/* Make sure this one is currently enabled. */
^1da177e4c3f41 Linus Torvalds    2005-04-16  105  		if (!test_bit(Enabled, &e->flags))
^1da177e4c3f41 Linus Torvalds    2005-04-16  106  			continue;
^1da177e4c3f41 Linus Torvalds    2005-04-16  107  
6b899c4e9a049d Mike Frysinger    2014-12-10  108  		/* Do matching based on extension if applicable. */
^1da177e4c3f41 Linus Torvalds    2005-04-16  109  		if (!test_bit(Magic, &e->flags)) {
^1da177e4c3f41 Linus Torvalds    2005-04-16  110  			if (p && !strcmp(e->magic, p + 1))
^1da177e4c3f41 Linus Torvalds    2005-04-16  111  				return e;
^1da177e4c3f41 Linus Torvalds    2005-04-16  112  			continue;
^1da177e4c3f41 Linus Torvalds    2005-04-16  113  		}
^1da177e4c3f41 Linus Torvalds    2005-04-16  114  
6b899c4e9a049d Mike Frysinger    2014-12-10  115  		/* Do matching based on magic & mask. */
^1da177e4c3f41 Linus Torvalds    2005-04-16  116  		s = bprm->buf + e->offset;
^1da177e4c3f41 Linus Torvalds    2005-04-16  117  		if (e->mask) {
^1da177e4c3f41 Linus Torvalds    2005-04-16  118  			for (j = 0; j < e->size; j++)
^1da177e4c3f41 Linus Torvalds    2005-04-16  119  				if ((*s++ ^ e->magic[j]) & e->mask[j])
^1da177e4c3f41 Linus Torvalds    2005-04-16  120  					break;
^1da177e4c3f41 Linus Torvalds    2005-04-16  121  		} else {
^1da177e4c3f41 Linus Torvalds    2005-04-16  122  			for (j = 0; j < e->size; j++)
^1da177e4c3f41 Linus Torvalds    2005-04-16  123  				if ((*s++ ^ e->magic[j]))
^1da177e4c3f41 Linus Torvalds    2005-04-16  124  					break;
^1da177e4c3f41 Linus Torvalds    2005-04-16  125  		}
^1da177e4c3f41 Linus Torvalds    2005-04-16  126  		if (j == e->size)
^1da177e4c3f41 Linus Torvalds    2005-04-16  127  			return e;
^1da177e4c3f41 Linus Torvalds    2005-04-16  128  	}
5ee7df8143c1bf Christian Brauner 2021-10-28  129  
^1da177e4c3f41 Linus Torvalds    2005-04-16  130  	return NULL;
^1da177e4c3f41 Linus Torvalds    2005-04-16  131  }
^1da177e4c3f41 Linus Torvalds    2005-04-16  132  

:::::: The code at line 95 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

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https://github.com/intel/lkp-tests/wiki