linux-kernel - kernel/gcov/fs.c:103: warning: Excess struct member 'buffer' description in 'gcov

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Date: Fri, 15 Dec 2023 04:53:19 +0800
From: kernel test robot <lkp@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Peter Oberparleiter <oberpar@...ux.ibm.com>
Subject: kernel/gcov/fs.c:103: warning: Excess struct member 'buffer'
 description in 'gcov_iterator'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   5bd7ef53ffe5ca580e93e74eb8c81ed191ddc4bd
commit: fbd126f5a658b92c7f6af986a6d89cf5e5693268 gcov: annotate struct gcov_iterator with __counted_by
date:   8 weeks ago
config: i386-buildonly-randconfig-001-20231214 (https://download.01.org/0day-ci/archive/20231215/202312150432.oBngC94A-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231215/202312150432.oBngC94A-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/202312150432.oBngC94A-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/gcov/fs.c:103: warning: Excess struct member 'buffer' description in 'gcov_iterator'


vim +103 kernel/gcov/fs.c

7a1d55b987dfcb Johannes Berg 2021-05-06   90  
7a1d55b987dfcb Johannes Berg 2021-05-06   91  /**
7a1d55b987dfcb Johannes Berg 2021-05-06   92   * struct gcov_iterator - specifies current file position in logical records
7a1d55b987dfcb Johannes Berg 2021-05-06   93   * @info: associated profiling data
7a1d55b987dfcb Johannes Berg 2021-05-06   94   * @buffer: buffer containing file data
7a1d55b987dfcb Johannes Berg 2021-05-06   95   * @size: size of buffer
7a1d55b987dfcb Johannes Berg 2021-05-06   96   * @pos: current position in file
7a1d55b987dfcb Johannes Berg 2021-05-06   97   */
7a1d55b987dfcb Johannes Berg 2021-05-06   98  struct gcov_iterator {
7a1d55b987dfcb Johannes Berg 2021-05-06   99  	struct gcov_info *info;
7a1d55b987dfcb Johannes Berg 2021-05-06  100  	size_t size;
7a1d55b987dfcb Johannes Berg 2021-05-06  101  	loff_t pos;
fbd126f5a658b9 Kees Cook     2023-09-22  102  	char buffer[] __counted_by(size);
7a1d55b987dfcb Johannes Berg 2021-05-06 @103  };
7a1d55b987dfcb Johannes Berg 2021-05-06  104  

:::::: The code at line 103 was first introduced by commit
:::::: 7a1d55b987dfcbddecdb67eecc76fe555d4348ba gcov: combine common code

:::::: TO: Johannes Berg <johannes.berg@...el.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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