Re: [PATCH 17/17] fortify: Work around Clang inlining bugs

Re: [PATCH 17/17] fortify: Work around Clang inlining bugs

[kernel test robot]

Hi Kees,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.16-rc5]
[cannot apply to rdma/for-next axboe-block/for-next kvm/queue tip/x86/core mkp-scsi/for-next jejb-scsi/for-next]
[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]

url:    https://github.com/0day-ci/linux/commits/Kees-Cook/Enable-strict-compile-time-memcpy-fortify-checks/20211214-064002
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git aa50faff4416c869b52dff68a937c84d29e12f4b
config: i386-randconfig-r003-20211213 (https://download.01.org/0day-ci/archive/20211214/202112142158.n5ChiotI-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b6a2ddb6c8ac29412b1361810972e15221fa021c)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/e5d600e1abbdd2034dbc844654957a4ec1182dbf
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Kees-Cook/Enable-strict-compile-time-memcpy-fortify-checks/20211214-064002
        git checkout e5d600e1abbdd2034dbc844654957a4ec1182dbf
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> warning: unsafe strlcpy() usage lacked '__write_overflow' symbol in lib/test_fortify/write_overflow-strlcpy.c
--
>> warning: unsafe strlcpy() usage lacked '__write_overflow' symbol in lib/test_fortify/write_overflow-strlcpy-src.c
--
>> warning: unsafe strcpy() usage lacked '__write_overflow' symbol in lib/test_fortify/write_overflow-strcpy-lit.c
--
>> warning: unsafe strcpy() usage lacked '__write_overflow' symbol in lib/test_fortify/write_overflow-strcpy.c

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org