tree: https://github.com/zen-kernel/zen-kernel 5.13/futex2-tkg head: 8eb940ffa39f19c4ddf284615dfb27a6444a3c1d commit: 0180aec9b832267462e7d6bfc1659ac5bd32350a [4/15] futex2: Implement requeue operation config: mips-randconfig-r026-20210720 (attached as .config) compiler: mips64-linux-gcc (GCC) 10.3.0 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://github.com/zen-kernel/zen-kernel/commit/0180aec9b832267462e7d6bfc... git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen-kernel-zen-kernel 5.13/futex2-tkg git checkout 0180aec9b832267462e7d6bfc1659ac5bd32350a # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 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 >>): kernel/futex2.c:723:16: warning: 'struct compat_futex_waitv' declared inside parameter list will not be visible outside of this definition or declaration 723 | struct compat_futex_waitv __user *uwaitv, | ^~~~~~~~~~~~~~~~~~ kernel/futex2.c: In function 'compat_futex_parse_waitv': kernel/futex2.c:727:28: error: storage size of 'waitv' isn't known 727 | struct compat_futex_waitv waitv; | ^~~~~ kernel/futex2.c:731:37: error: invalid use of undefined type 'struct compat_futex_waitv' 731 | if (copy_from_user(&waitv, &uwaitv[i], sizeof(waitv))) | ^ kernel/futex2.c:740:31: error: implicit declaration of function 'compat_ptr' [-Werror=implicit-function-declaration] 740 | futexv->objects[i].uaddr = compat_ptr(waitv.uaddr); | ^~~~~~~~~~ kernel/futex2.c:727:28: warning: unused variable 'waitv' [-Wunused-variable] 727 | struct compat_futex_waitv waitv; | ^~~~~ kernel/futex2.c: At top level: kernel/futex2.c:759:36: error: expected ')' before 'struct' 759 | COMPAT_SYSCALL_DEFINE4(futex_waitv, struct compat_futex_waitv __user *, waiters, | ^~~~~~~ | ) kernel/futex2.c:1086:18: warning: 'struct compat_futex_requeue' declared inside parameter list will not be visible outside of this definition or declaration 1086 | struct compat_futex_requeue __user *uaddr, | ^~~~~~~~~~~~~~~~~~~~ kernel/futex2.c: In function 'compat_futex_parse_requeue': 1089 | struct compat_futex_requeue tmp; | ^~~ kernel/futex2.c:1089:30: warning: unused variable 'tmp' [-Wunused-variable] kernel/futex2.c: At top level: kernel/futex2.c:1106:38: error: expected ')' before 'struct' 1106 | COMPAT_SYSCALL_DEFINE6(futex_requeue, struct compat_futex_requeue __user *, uaddr1, | ^~~~~~~ | ) kernel/futex2.c:1085:12: warning: 'compat_futex_parse_requeue' defined but not used [-Wunused-function] 1085 | static int compat_futex_parse_requeue(struct futex_requeue *rq, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/futex2.c:722:12: warning: 'compat_futex_parse_waitv' defined but not used [-Wunused-function] 722 | static int compat_futex_parse_waitv(struct futex_waiter_head *futexv, | ^~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +1089 kernel/futex2.c 1083 1084 #ifdef CONFIG_COMPAT 1085 static int compat_futex_parse_requeue(struct futex_requeue *rq, 1086 struct compat_futex_requeue __user *uaddr, 1087 bool *shared) 1088 { 1090 1091 if (copy_from_user(&tmp, uaddr, sizeof(tmp))) 1092 return -EFAULT; 1093 1094 if (tmp.flags & ~FUTEXV_WAITER_MASK || 1095 (tmp.flags & FUTEX_SIZE_MASK) != FUTEX_32) 1096 return -EINVAL; 1097 1098 *shared = (tmp.flags & FUTEX_SHARED_FLAG) ? true : false; 1099 1100 rq->uaddr = compat_ptr(tmp.uaddr); 1101 rq->flags = tmp.flags; 1102 1103 return 0; 1104 } 1105 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org