On Thu, Dec 14, 2023 at 01:50:05PM -0800, Kees Cook wrote: > On Fri, Dec 15, 2023 at 04:53:19AM +0800, kernel test robot wrote: > > 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@xxxxxxxxx/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@xxxxxxxxx/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@xxxxxxxxx> > > | Closes: https://lore.kernel.org/oe-kbuild-all/202312150432.oBngC94A-lkp@xxxxxxxxx/ > > > > 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 > > It looks like whatever produces that error is not parsing attributes > correctly. I suspect this is the "htmldocs" target and "__counted_by" is > missing from Documentation/conf.py. I'll investigate... This is triggered by W=1 build make W=1 O=build_dir ARCH=i386 olddefconfig make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/gcov/ The detail step is at [1], hope it can help reproduce the issue [1] https://download.01.org/0day-ci/archive/20231215/202312150432.oBngC94A-lkp@xxxxxxxxx/reproduce > > -- > Kees Cook >
