tree: git://git.infradead.org/users/hch/misc.git set_fs-coredump head: 989bf8eec0898a5ce2a949912a1fe45dd4da27c6 commit: b798b18fe37310757ca69f5dad372ed18e80e1d2 [5/8] signal: refactor copy_siginfo_to_user32 config: x86_64-randconfig-d003-20200428 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: git checkout b798b18fe37310757ca69f5dad372ed18e80e1d2 # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/x86/kernel/signal.c: In function 'x32_copy_siginfo_to_user': copy_siginfo_to_external32(&new, from); ^~~~~~~~~~~~~~~~~~~~~~~~~~ __copy_siginfo_to_external32 cc1: some warnings being treated as errors vim +521 arch/x86/kernel/signal.c 514 515 #ifdef CONFIG_X86_X32_ABI 516 static int x32_copy_siginfo_to_user(struct compat_siginfo __user *to, 517 const struct kernel_siginfo *from) 518 { 519 struct compat_siginfo new; 520 522 if (from->si_signo == SIGCHLD) { 523 new._sifields._sigchld_x32._utime = from->si_utime; 524 new._sifields._sigchld_x32._stime = from->si_stime; 525 } 526 if (copy_to_user(to, &new, sizeof(struct compat_siginfo))) 527 return -EFAULT; 528 return 0; 529 } 530 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org