tree: https://android.googlesource.com/kernel/common android-4.19 head: a1728ecf5aed447128ca7143f29d8b0f5f6263c5 commit: 23dea1cf7ed3846719448e74feeb56c28e3a9019 [40/106] UPSTREAM: mips: Add clock_getres entry point config: mips-malta_kvm_guest_defconfig (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 23dea1cf7ed3846719448e74feeb56c28e3a9019 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=mips 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 >>): In file included from lib/vdso/gettimeofday.c:26, from <command-line>: arch/mips/include/asm/vdso/gettimeofday.h: In function 'clock_gettime_fallback': arch/mips/include/asm/vdso/gettimeofday.h:70:31: error: '__NR_clock_gettime64' undeclared (first use in this function) 70 | register long nr asm("v0") = __NR_clock_gettime64; | ^~~~~~~~~~~~~~~~~~~~ arch/mips/include/asm/vdso/gettimeofday.h:70:31: note: each undeclared identifier is reported only once for each function it appears in arch/mips/include/asm/vdso/gettimeofday.h: In function 'clock_getres_fallback': 94 | register long nr asm("v0") = __NR_clock_getres_time64; | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from <command-line>: lib/vdso/gettimeofday.c: In function '__cvdso_clock_gettime32': lib/vdso/gettimeofday.c:113:6: error: dereferencing pointer to incomplete type 'struct compat_timespec' 113 | res->tv_sec = ts.tv_sec; | ^~ vim +/__NR_clock_getres_time64 +94 arch/mips/include/asm/vdso/gettimeofday.h 83 84 static __always_inline int clock_getres_fallback( 85 clockid_t _clkid, 86 struct __kernel_timespec *_ts) 87 { 88 register struct __kernel_timespec *ts asm("a1") = _ts; 89 register clockid_t clkid asm("a0") = _clkid; 90 register long ret asm("v0"); 91 #if _MIPS_SIM == _MIPS_SIM_ABI64 92 register long nr asm("v0") = __NR_clock_getres; 93 #else 95 #endif 96 register long error asm("a3"); 97 98 asm volatile( 99 " syscall\n" 100 : "=r" (ret), "=r" (error) 101 : "r" (clkid), "r" (ts), "r" (nr) 102 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", 103 "$14", "$15", "$24", "$25", "hi", "lo", "memory"); 104 105 return error ? -ret : ret; 106 } 107 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org