linux-kernel - [kees:kspp/memcpy/next-20210816/v2 63/63] warning: unsafe strlcpy() usage lacked '__write_overflow' symbol in lib/test_fortify/write

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Date:   Sat, 21 Aug 2021 13:35:27 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [kees:kspp/memcpy/next-20210816/v2 63/63] warning: unsafe strlcpy()
 usage lacked '__write_overflow' symbol in
 lib/test_fortify/write_overflow-strlcpy.c

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git kspp/memcpy/next-20210816/v2
head:   0f0894ea4d0761cc43917960b4878fa3d1ed7a5f
commit: 0f0894ea4d0761cc43917960b4878fa3d1ed7a5f [63/63] fortify: Work around Clang inlining bugs
config: i386-randconfig-r014-20210816 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d2b574a4dea5b718e4386bf2e26af0126e5978ce)
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://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=0f0894ea4d0761cc43917960b4878fa3d1ed7a5f
        git remote add kees https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git
        git fetch --no-tags kees kspp/memcpy/next-20210816/v2
        git checkout 0f0894ea4d0761cc43917960b4878fa3d1ed7a5f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.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 strcpy() usage lacked '__write_overflow' symbol in lib/test_fortify/write_overflow-strcpy-lit.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.c

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

Download attachment ".config.gz" of type "application/gzip" (38692 bytes)