tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f78d76e72a4671ea52d12752d92077788b4f5d50 commit: 4ef873226ceb9c7bf11a922caddc5698a24bcfaf mm: introduce fault_signal_pending() date: 11 months ago config: mips-randconfig-r033-20210312 (attached as .config) compiler: mips64-linux-gcc (GCC) 9.3.0 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 4ef873226ceb9c7bf11a922caddc5698a24bcfaf # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 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 >>): 32 | #define PC pi->private | In file included from arch/mips/include/asm/ptrace.h:19, from include/linux/sched/signal.h:14, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:34, from arch/mips/include/asm/elf.h:12, from include/linux/elf.h:5, from include/linux/module.h:18, from drivers/block/paride/bpck.c:19: arch/mips/include/uapi/asm/ptrace.h:17: note: this is the location of the previous definition 17 | #define PC 64 | vim +/PC +32 drivers/block/paride/bpck.c ^1da177e4c3f415 Linus Torvalds 2005-04-16 31 ^1da177e4c3f415 Linus Torvalds 2005-04-16 @32 #define PC pi->private ^1da177e4c3f415 Linus Torvalds 2005-04-16 33 #define r2() (PC=(in_p(2) & 0xff)) ^1da177e4c3f415 Linus Torvalds 2005-04-16 34 #define w2(byte) {out_p(2,byte); PC = byte;} ^1da177e4c3f415 Linus Torvalds 2005-04-16 35 #define t2(pat) {PC ^= pat; out_p(2,PC);} ^1da177e4c3f415 Linus Torvalds 2005-04-16 36 #define e2() {PC &= 0xfe; out_p(2,PC);} ^1da177e4c3f415 Linus Torvalds 2005-04-16 37 #define o2() {PC |= 1; out_p(2,PC);} ^1da177e4c3f415 Linus Torvalds 2005-04-16 38 :::::: The code at line 32 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org