Hi Nick, First bad commit (maybe != root cause): tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.10 head: e48efff5cb5fd63a687465347bdbb52ef98dad44 commit: ffff118fe157b534c3244f8b300e655231dbd95c [9998/9999] BACKPORT: scripts/Makefile.clang: default to LLVM_IAS=1 config: i386-randconfig-r025-20220124 (https://download.01.org/0day-ci/archive/20220125/202201252238.tTDAQpum-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 997e128e2a78f5a5434fc75997441ae1ee76f8a4) 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/ammarfaizi2/linux-block/commit/ffff118fe157b534c3244f8... git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.10 git checkout ffff118fe157b534c3244f8b300e655231dbd95c # 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 arch/x86/ 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 >>): .section .entry.text, "ax" ^ .pushsection .altinstr_replacement,"ax" ^ <instantiation>:1:1: note: while in macro instantiation ALTERNATIVE "jmp .Lend_25", "", ( 7*32+11) ^ <instantiation>:4:2: note: while in macro instantiation SWITCH_TO_KERNEL_CR3 scratch_reg=%eax ^ <instantiation>:33:2: note: while in macro instantiation SWITCH_TO_KERNEL_STACK ^ <instantiation>:4:2: note: while in macro instantiation SAVE_ALL switch_stacks=1 ^ arch/x86/include/asm/idtentry.h:626:1: note: while in macro instantiation idtentry_irq 0xFFFF common_interrupt; ^ arch/x86/entry/entry_32.S:1010:1: warning: DWARF2 only supports one section per compilation unit .pushsection .fixup, "ax" ^ -- .section ".head.text","ax" ^ arch/x86/kernel/head_32.S:340:1: warning: DWARF2 only supports one section per compilation unit .section ".init.text","ax" ^ -- .pushsection .altinstr_replacement,"ax" ^ arch/x86/entry/vdso/vdso32/system_call.S:60:2: note: while in macro instantiation ALTERNATIVE "", "movl %esp, %ebp; sysenter", ( 0*32+11) ^ vim +52 arch/x86/entry/entry_32.S afaef01c001537 arch/x86/entry/entry_32.S Alexander Popov 2018-08-17 51 ea7145477a461e arch/x86/kernel/entry_32.S Jiri Olsa 2011-03-07 @52 .section .entry.text, "ax" ea7145477a461e arch/x86/kernel/entry_32.S Jiri Olsa 2011-03-07 53 :::::: The code at line 52 was first introduced by commit :::::: ea7145477a461e09d8d194cac4b996dc4f449107 x86: Separate out entry text section :::::: TO: Jiri Olsa <jolsa(a)redhat.com&gt; :::::: CC: Ingo Molnar <mingo(a)elte.hu&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org