TO: "Jan Alexander Steffens (heftig)" <jan.steffens(a)gmail.com>
tree:
https://github.com/zen-kernel/zen-kernel 5.7/zen-sauce
head: 9555af4960645728364e3b2aaae65e6ea7df0062
commit: 97095505948bd7eec20a9ebcbb579126e6949d2a [3/22] ZEN: Enable additional CPU
Optimizations for GCC v10.1+ / Kernel v5.7+
config: x86_64-randconfig-r026-20200607 (attached as .config)
compiler: clang version 11.0.0 (
https://github.com/llvm/llvm-project
e429cffd4f228f70c1d9df0e5d77c08590dd9766)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
git checkout 97095505948bd7eec20a9ebcbb579126e6949d2a
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
> fs/f2fs/data.o: warning: objtool: f2fs_write_begin()+0x1221:
unreachable instruction
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org