tree: https://github.com/hnaz/linux-mm master head: 5d9ee416b5701096536c7a63c04dbe25012baa9e commit: 76e15e67350bfb1e0b1b151255c1d0b075143424 [95/340] mm: return faster for non-fatal signals in user mode faults config: alpha-defconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 76e15e67350bfb1e0b1b151255c1d0b075143424 # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from include/asm-generic/bug.h:5, from arch/alpha/include/asm/bug.h:23, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/alpha/include/generated/asm/current.h:1, from include/linux/sched.h:12, from arch/alpha/kernel/asm-offsets.c:10: include/linux/sched/signal.h: In function 'fault_signal_pending': include/linux/sched/signal.h:381:33: error: 'VM_FAULT_RETRY' undeclared (first use in this function) 381 | return unlikely((fault_flags & VM_FAULT_RETRY) && | ^~~~~~~~~~~~~~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/sched/signal.h:381:33: note: each undeclared identifier is reported only once for each function it appears in 381 | return unlikely((fault_flags & VM_FAULT_RETRY) && | ^~~~~~~~~~~~~~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ >> include/linux/sched/signal.h:383:6: error: implicit declaration of function 'user_mode' [-Werror=implicit-function-declaration] 383 | (user_mode(regs) && signal_pending(current)))); | ^~~~~~~~~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:101: arch/alpha/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1113: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:180: sub-make] Error 2 20 real 4 user 7 sys 59.21% cpu make prepare vim +/user_mode +383 include/linux/sched/signal.h 371 372 /* 373 * This should only be used in fault handlers to decide whether we 374 * should stop the current fault routine to handle the signals 375 * instead, especially with the case where we've got interrupted with 376 * a VM_FAULT_RETRY. 377 */ 378 static inline bool fault_signal_pending(unsigned int fault_flags, 379 struct pt_regs *regs) 380 { 381 return unlikely((fault_flags & VM_FAULT_RETRY) && 382 (fatal_signal_pending(current) || > 383 (user_mode(regs) && signal_pending(current)))); 384 } 385 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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