tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.ibt head: ede73fa4e97e8f275401a989b8d9df192a2c3ec4 commit: 9947fe456516712bd4df7139f2ff329cc14ba745 [7/15] x86: Don't generate ENDBR in .discard.text config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220214/202202141030.qhNGDbYM-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue x86/wip.ibt git checkout 9947fe456516712bd4df7139f2ff329cc14ba745 # save the config file to linux build tree mkdir build_dir make 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(a)intel.com&gt; All errors (new ones prefixed by >>): 66 | RESERVE_BRK(dmi_alloc, 65536); | ^~~~~~~~~~~ cc1: all warnings being treated as errors -- 178 | RESERVE_BRK(early_pgt_alloc, INIT_PGT_BUF_SIZE); | ^~~~~~~~~~~ cc1: all warnings being treated as errors vim +66 arch/x86/kernel/setup.c 2b72394e408964 Pekka Enberg 2009-04-28 64 e808bae2407a08 Thadeu Lima de Souza Cascardo 2010-02-09 65 #ifdef CONFIG_DMI 796216a57fe45c Jeremy Fitzhardinge 2009-03-12 @66 RESERVE_BRK(dmi_alloc, 65536); e808bae2407a08 Thadeu Lima de Souza Cascardo 2010-02-09 67 #endif 796216a57fe45c Jeremy Fitzhardinge 2009-03-12 68 c0b5842a457d44 Ingo Molnar 2009-01-27 69 :::::: The code at line 66 was first introduced by commit :::::: 796216a57fe45c04adc35bda1f0782efec78a713 x86: allow extend_brk users to reserve brk space :::::: TO: Jeremy Fitzhardinge <jeremy.fitzhardinge(a)citrix.com&gt; :::::: CC: H. Peter Anvin <hpa(a)zytor.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org