[kbuild-all] arch/x86/kernel/fpu/xstate.o: warning: objtool: fpstate_realloc()+0x225: unreachable instruction

CC: linux-kernel(a)vger.kernel.org TO: "Chang S. Bae" <chang.seok.bae(a)intel.com&gt; CC: Borislav Petkov <bp(a)suse.de&gt; CC: Thomas Gleixner <tglx(a)linutronix.de&gt; Hi Chang, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 2a987e65025e2b79c6d453b78cb5985ac6e5eb26 commit: 2308ee57d93d896618dd65c996429c9d3e469fe0 x86/fpu/amx: Enable the AMX feature in 64-bit mode date: 6 weeks ago config: x86_64-randconfig-r035-20211128 (https://download.01.org/0day-ci/archive/20211208/202112081601.4Ew2BGm4-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5c64d8ef8cc0c0ed3e0f2ae693d99e7f70f20a84) 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 2308ee57d93d896618dd65c996429c9d3e469fe0 # 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=x86_64 SHELL=/bin/bash arch/x86/ block// crypto// drivers/ fs// kernel// mm// net/ sound/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org