tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.19 head: 0c8c2eaf12587ba14280b4e6388198d0183841ca commit: 269182567d367e317a1d63ba84756a6542cacd30 [18/20] FROMGIT: Bluetooth: btmrvl_sdio: Implement prevent_wake config: s390-randconfig-r006-20200615 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 487ca07fcc75d52755c9fe2ee05bcb3b6eeeec44) 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-s390-linux-gnu git checkout 269182567d367e317a1d63ba84756a6542cacd30 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 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 >>, old ones prefixed by <<): In file included from include/linux/blkdev.h:21: In file included from include/linux/bio.h:28: In file included from arch/s390/include/asm/io.h:79: include/asm-generic/io.h:499:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : ^ include/uapi/linux/swab.h:22:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0xff000000UL) >> 24))) ^ In file included from mm/vmscan.c:30: In file included from include/linux/blkdev.h:21: In file included from include/linux/bio.h:28: In file included from arch/s390/include/asm/io.h:79: include/asm-generic/io.h:499:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:120:12: note: expanded from macro '__swab32' __fswab32(x)) ^ In file included from mm/vmscan.c:30: In file included from include/linux/blkdev.h:21: In file included from include/linux/bio.h:28: In file included from arch/s390/include/asm/io.h:79: include/asm-generic/io.h:510:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:520:46: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew(cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:530:46: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel(cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:592:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:600:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:608:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:21: 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:626:21: 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:635:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ In file included from mm/vmscan.c:66: In file included from include/trace/events/vmscan.h:597: In file included from include/trace/define_trace.h:96: In file included from include/trace/trace_events.h:20: In file included from include/linux/trace_events.h:7: In file included from include/linux/trace_seq.h:5: include/linux/seq_buf.h:35:12: warning: assigning to 'char *' from 'unsigned char *' converts between pointers to integer types with different sign [-Wpointer-sign] s->buffer = buf; ^ ~~~ In file included from mm/vmscan.c:66: In file included from include/trace/events/vmscan.h:597: In file included from include/trace/define_trace.h:96: In file included from include/trace/trace_events.h:20: In file included from include/linux/trace_events.h:10: In file included from include/linux/perf_event.h:48: include/linux/ftrace.h:706:9: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] addr = CALLER_ADDR1; ^~~~~~~~~~~~ include/linux/ftrace.h:693:38: note: expanded from macro 'CALLER_ADDR1' #define CALLER_ADDR1 ((unsigned long)ftrace_return_address(1)) ^~~~~~~~~~~~~~~~~~~~~~~~ arch/s390/include/asm/ftrace.h:16:34: note: expanded from macro 'ftrace_return_address' #define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from mm/vmscan.c:66: In file included from include/trace/events/vmscan.h:597: In file included from include/trace/define_trace.h:96: In file included from include/trace/trace_events.h:20: In file included from include/linux/trace_events.h:10: In file included from include/linux/perf_event.h:48: include/linux/ftrace.h:709:9: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] return CALLER_ADDR2; ^~~~~~~~~~~~ include/linux/ftrace.h:694:38: note: expanded from macro 'CALLER_ADDR2' #define CALLER_ADDR2 ((unsigned long)ftrace_return_address(2)) ^~~~~~~~~~~~~~~~~~~~~~~~ arch/s390/include/asm/ftrace.h:16:34: note: expanded from macro 'ftrace_return_address' #define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ 35 warnings generated. /tmp/vmscan-138434.s: Assembler messages: /tmp/vmscan-138434.s:14765: Error: bad expression /tmp/vmscan-138434.s:14765: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:18236: Error: bad expression /tmp/vmscan-138434.s:18236: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:18908: Error: bad expression /tmp/vmscan-138434.s:18908: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:23797: Error: bad expression /tmp/vmscan-138434.s:23797: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:24101: Error: bad expression /tmp/vmscan-138434.s:24101: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:25437: Error: bad expression /tmp/vmscan-138434.s:25437: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:27800: Error: bad expression /tmp/vmscan-138434.s:27800: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:30492: Error: bad expression /tmp/vmscan-138434.s:30492: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:31770: Error: bad expression /tmp/vmscan-138434.s:31770: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:32658: Error: bad expression /tmp/vmscan-138434.s:32658: Error: junk at end of line, first unrecognized character is `r' /tmp/vmscan-138434.s:35690: Error: bad expression /tmp/vmscan-138434.s:35690: Error: junk at end of line, first unrecognized character is `r' clang-11: error: assembler command failed with exit code 1 (use -v to see invocation) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org