Hi Kees, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.15.y head: 60b502b3ffea07de3d741d79a22da1092b7a8657 commit: 33db9912ff7c491f839c89a08e98f755aa09598f [1485/9999] ubsan: remove CONFIG_UBSAN_OBJECT_SIZE config: s390-randconfig-r013-20230222 (https://download.01.org/0day-ci/archive/20230224/202302240321.cPoxUIMw-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=33db9912ff7c491f839c89a08e98f755aa09598f git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git git fetch --no-tags stable linux-5.15.y git checkout 33db9912ff7c491f839c89a08e98f755aa09598f # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302240321.cPoxUIMw-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ <instantiation>:3:19: error: too many positional arguments GR_NUM b2, 1 /* Base register */ ^ lib/raid6/s390vx8.c:73:16: note: while in macro instantiation asm volatile ("VSTM %2,%3,0,1" ^ <inline asm>:1:2: note: instantiated into assembly here VSTM 0,7,0,1 ^ <instantiation>:3:19: error: too many positional arguments GR_NUM b2, 1 /* Base register */ ^ lib/raid6/s390vx8.c:73:16: note: while in macro instantiation asm volatile ("VSTM %2,%3,0,1" ^ <inline asm>:1:2: note: instantiated into assembly here VSTM 8,15,0,1 ^ <instantiation>:3:21: error: too many positional arguments GR_NUM b2, %r1 /* Base register */ ^ lib/raid6/s390vx8.c:63:16: note: while in macro instantiation asm volatile ("VLM %2,%3,0,%1" ^ <inline asm>:1:2: note: instantiated into assembly here VLM 0,7,0,%r1 ^ <instantiation>:3:21: error: too many positional arguments GR_NUM b2, %r1 /* Base register */ ^ lib/raid6/s390vx8.c:63:16: note: while in macro instantiation asm volatile ("VLM %2,%3,0,%1" ^ <inline asm>:1:2: note: instantiated into assembly here VLM 16,23,0,%r1 ^ <instantiation>:3:21: error: too many positional arguments GR_NUM b2, %r1 /* Base register */ ^ lib/raid6/s390vx8.c:63:16: note: while in macro instantiation asm volatile ("VLM %2,%3,0,%1" ^ <inline asm>:1:2: note: instantiated into assembly here VLM 16,23,0,%r1 ^ <instantiation>:3:19: error: too many positional arguments GR_NUM b2, 1 /* Base register */ ^ lib/raid6/s390vx8.c:73:16: note: while in macro instantiation asm volatile ("VSTM %2,%3,0,1" ^ <inline asm>:1:2: note: instantiated into assembly here VSTM 16,23,0,1 ^ <instantiation>:3:21: error: too many positional arguments GR_NUM b2, %r1 /* Base register */ ^ lib/raid6/s390vx8.c:63:16: note: while in macro instantiation asm volatile ("VLM %2,%3,0,%1" ^ <inline asm>:1:2: note: instantiated into assembly here VLM 16,23,0,%r1 ^ <instantiation>:3:19: error: too many positional arguments GR_NUM b2, 1 /* Base register */ ^ lib/raid6/s390vx8.c:73:16: note: while in macro instantiation asm volatile ("VSTM %2,%3,0,1" ^ <inline asm>:1:2: note: instantiated into assembly here VSTM 16,23,0,1 ^ <instantiation>:3:21: error: too many positional arguments GR_NUM b2, %r1 /* Base register */ ^ lib/raid6/s390vx8.c:63:16: note: while in macro instantiation asm volatile ("VLM %2,%3,0,%1" ^ <inline asm>:1:2: note: instantiated into assembly here VLM 0,7,0,%r1 ^ <instantiation>:3:21: error: too many positional arguments GR_NUM b2, %r1 /* Base register */ ^ lib/raid6/s390vx8.c:63:16: note: while in macro instantiation asm volatile ("VLM %2,%3,0,%1" ^ <inline asm>:1:2: note: instantiated into assembly here VLM 16,23,0,%r1 ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ >> <instantiation>:5:8: error: expected relocatable expression .word (b2 << 12) | (0) ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 12 warnings and 20 errors generated. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
