tree: https://github.com/intel/linux-intel-lts.git 4.19/android_r head: 8367d521b6ca9b77d18fbb56f936df6824f0843c commit: f3a6a2a287f2413be23e2caeb8462d3659749582 [16639/25353] UPSTREAM: mips: vdso: Fix source path config: mips-ip28_defconfig (attached as .config) compiler: mips64-linux-gcc (GCC) 11.2.0 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://github.com/intel/linux-intel-lts/commit/f3a6a2a287f2413be23e2caeb... git remote add intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-lts 4.19/android_r git checkout f3a6a2a287f2413be23e2caeb8462d3659749582 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips 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 >>): In file included from lib/vdso/gettimeofday.c:26, from <command-line>: arch/mips/include/asm/vdso/gettimeofday.h: In function 'clock_gettime_fallback': 70 | register long nr asm("v0") = __NR_clock_gettime64; | ^~~~~~~~~~~~~~~~~~~~ arch/mips/include/asm/vdso/gettimeofday.h:70:38: 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:113:20: error: invalid use of undefined type 'struct compat_timespec' 113 | res->tv_sec = ts.tv_sec; | ^~ lib/vdso/gettimeofday.c:114:20: error: invalid use of undefined type 'struct compat_timespec' 114 | res->tv_nsec = ts.tv_nsec; | ^~ lib/vdso/gettimeofday.c: In function '__cvdso_clock_getres_time32': lib/vdso/gettimeofday.c:219:20: error: invalid use of undefined type 'struct compat_timespec' 219 | res->tv_sec = ts.tv_sec; | ^~ lib/vdso/gettimeofday.c:220:20: error: invalid use of undefined type 'struct compat_timespec' 220 | res->tv_nsec = ts.tv_nsec; | ^~ arch/mips/vdso/vgettimeofday.c: At top level: arch/mips/vdso/vgettimeofday.c:14:5: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes] 14 | int __vdso_clock_gettime(clockid_t clock, | ^~~~~~~~~~~~~~~~~~~~ arch/mips/vdso/vgettimeofday.c:20:5: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes] 20 | int __vdso_gettimeofday(struct __kernel_old_timeval *tv, | ^~~~~~~~~~~~~~~~~~~ arch/mips/vdso/vgettimeofday.c:26:5: warning: no previous prototype for '__vdso_clock_getres' [-Wmissing-prototypes] 26 | int __vdso_clock_getres(clockid_t clock_id, | ^~~~~~~~~~~~~~~~~~~ arch/mips/vdso/vgettimeofday.c:32:5: warning: no previous prototype for '__vdso_clock_gettime64' [-Wmissing-prototypes] 32 | int __vdso_clock_gettime64(clockid_t clock, | ^~~~~~~~~~~~~~~~~~~~~~ vim +/__NR_clock_gettime64 +70 arch/mips/include/asm/vdso/gettimeofday.h 6b7f832e465d88 Vincenzo Frascino 2019-06-21 59 6b7f832e465d88 Vincenzo Frascino 2019-06-21 60 static __always_inline long clock_gettime_fallback( 6b7f832e465d88 Vincenzo Frascino 2019-06-21 61 clockid_t _clkid, 6b7f832e465d88 Vincenzo Frascino 2019-06-21 62 struct __kernel_timespec *_ts) 6b7f832e465d88 Vincenzo Frascino 2019-06-21 63 { 6b7f832e465d88 Vincenzo Frascino 2019-06-21 64 register struct __kernel_timespec *ts asm("a1") = _ts; 6b7f832e465d88 Vincenzo Frascino 2019-06-21 65 register clockid_t clkid asm("a0") = _clkid; 6b7f832e465d88 Vincenzo Frascino 2019-06-21 66 register long ret asm("v0"); 6b7f832e465d88 Vincenzo Frascino 2019-06-21 67 #if _MIPS_SIM == _MIPS_SIM_ABI64 6b7f832e465d88 Vincenzo Frascino 2019-06-21 68 register long nr asm("v0") = __NR_clock_gettime; 6b7f832e465d88 Vincenzo Frascino 2019-06-21 69 #else 6b7f832e465d88 Vincenzo Frascino 2019-06-21 @70 register long nr asm("v0") = __NR_clock_gettime64; 6b7f832e465d88 Vincenzo Frascino 2019-06-21 71 #endif 6b7f832e465d88 Vincenzo Frascino 2019-06-21 72 register long error asm("a3"); 6b7f832e465d88 Vincenzo Frascino 2019-06-21 73 6b7f832e465d88 Vincenzo Frascino 2019-06-21 74 asm volatile( 6b7f832e465d88 Vincenzo Frascino 2019-06-21 75 " syscall\n" 6b7f832e465d88 Vincenzo Frascino 2019-06-21 76 : "=r" (ret), "=r" (error) 6b7f832e465d88 Vincenzo Frascino 2019-06-21 77 : "r" (clkid), "r" (ts), "r" (nr) 6b7f832e465d88 Vincenzo Frascino 2019-06-21 78 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", 6b7f832e465d88 Vincenzo Frascino 2019-06-21 79 "$14", "$15", "$24", "$25", "hi", "lo", "memory"); 6b7f832e465d88 Vincenzo Frascino 2019-06-21 80 6b7f832e465d88 Vincenzo Frascino 2019-06-21 81 return error ? -ret : ret; 6b7f832e465d88 Vincenzo Frascino 2019-06-21 82 } 6b7f832e465d88 Vincenzo Frascino 2019-06-21 83 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 84 static __always_inline int clock_getres_fallback( 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 85 clockid_t _clkid, 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 86 struct __kernel_timespec *_ts) 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 87 { 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 88 register struct __kernel_timespec *ts asm("a1") = _ts; 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 89 register clockid_t clkid asm("a0") = _clkid; 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 90 register long ret asm("v0"); 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 91 #if _MIPS_SIM == _MIPS_SIM_ABI64 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 92 register long nr asm("v0") = __NR_clock_getres; 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 93 #else 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 @94 register long nr asm("v0") = __NR_clock_getres_time64; 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 95 #endif 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 96 register long error asm("a3"); 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 97 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 98 asm volatile( 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 99 " syscall\n" 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 100 : "=r" (ret), "=r" (error) 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 101 : "r" (clkid), "r" (ts), "r" (nr) 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 102 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 103 "$14", "$15", "$24", "$25", "hi", "lo", "memory"); 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 104 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 105 return error ? -ret : ret; 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 106 } 23dea1cf7ed384 Vincenzo Frascino 2019-06-21 107 :::::: The code at line 70 was first introduced by commit :::::: 6b7f832e465d88fca5f3a07b85e664f962c88e0b BACKPORT: mips: Add support for generic vDSO :::::: TO: Vincenzo Frascino <vincenzo.frascino(a)arm.com&gt; :::::: CC: Alistair Delva <adelva(a)google.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org