tree: https://github.com/alibaba/cloud-kernel.git linux-next head: e07b931e8ed58352ad4839243454571b6ce59222 commit: a078ed69b286d581d1238d39258a2789f5836d3e [242/644] io_uring: add support for pre-mapped user IO buffers config: m68k-m5475evb_defconfig (attached as .config) compiler: m68k-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 a078ed69b286d581d1238d39258a2789f5836d3e # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): <stdin>:1239:2: warning: #warning syscall seccomp not implemented [-Wcpp] <stdin>:1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] <stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp] <stdin>:1338:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1341:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] -- <stdin>:1239:2: warning: #warning syscall seccomp not implemented [-Wcpp] <stdin>:1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] <stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp] <stdin>:1338:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1341:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] 18 real 6 user 12 sys 100.80% cpu make modules_prepare -- <stdin>:1239:2: warning: #warning syscall seccomp not implemented [-Wcpp] <stdin>:1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] <stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp] <stdin>:1338:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1341:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] 18 real 4 user 12 sys 88.80% cpu make prepare --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org