tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.4 head: 2d9bf6a74db95986dbd9e1f83bdb02577f2bd8ad commit: 6c114632758e5acf9d11db539fd03fc0bcdf76bb [32/36] UPSTREAM: ACPI / processor: Finish making acpi_processor_ppc_has_changed() void config: x86_64-randconfig-a014-20200817 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project de71b46a519db014ce906a39f8a0e1b235ef1568) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 6c114632758e5acf9d11db539fd03fc0bcdf76bb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): return atomic_read(&ht->nelems) < (tbl->size * 3 / 10) && ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~ include/linux/rhashtable.h:289:34: warning: comparison of integers of different signs: 'int' and 'const unsigned int' [-Wsign-compare] return atomic_read(&ht->nelems) > tbl->size && ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~ include/linux/rhashtable.h:302:34: warning: comparison of integers of different signs: 'int' and 'const unsigned int' [-Wsign-compare] atomic_read(&ht->nelems) >= ht->p.insecure_max_entries; ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: In file included from include/net/sock.h:51: include/linux/netdevice.h:2413:34: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] skb_checksum_start_offset(skb) < ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ include/linux/netdevice.h:3051:15: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] BUG_ON(index >= dev->num_rx_queues); ~~~~~ ^ ~~~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:58:45: note: expanded from macro 'BUG_ON' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^~~~~~~~~ include/linux/compiler.h:182:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: In file included from include/net/sock.h:51: include/linux/netdevice.h:3325:37: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) ~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: In file included from include/net/sock.h:63: In file included from include/linux/filter.h:16: In file included from include/net/sch_generic.h:12: In file included from include/net/rtnetlink.h:5: include/net/netlink.h:345:18: warning: comparison of integers of different signs: 'const __u32' (aka 'const unsigned int') and 'int' [-Wsign-compare] nlh->nlmsg_len <= remaining); ~~~~~~~~~~~~~~ ^ ~~~~~~~~~ include/net/netlink.h:380:21: warning: comparison of integers of different signs: 'const __u32' (aka 'const unsigned int') and 'int' [-Wsign-compare] if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~ include/net/netlink.h:413:21: warning: comparison of integers of different signs: 'const __u32' (aka 'const unsigned int') and 'int' [-Wsign-compare] if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: In file included from include/net/sock.h:63: In file included from include/linux/filter.h:16: In file included from include/net/sch_generic.h:12: include/net/rtnetlink.h:20:21: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg)) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: In file included from include/net/sock.h:63: In file included from include/linux/filter.h:16: include/net/sch_generic.h:267:33: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] BUILD_BUG_ON(sizeof(qcb->data) < sz); ~~~~~~~~~~~~~~~~~ ^ ~~ include/linux/build_bug.h:71:19: note: expanded from macro 'BUILD_BUG_ON' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^~~~~~~~~ include/linux/build_bug.h:47:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~ include/linux/compiler.h:509:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^~~~~~~~~ include/linux/compiler.h:497:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^~~~~~~~~ include/linux/compiler.h:489:19: note: expanded from macro '__compiletime_assert' bool __cond = !(condition); \ ^~~~~~~~~ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: In file included from include/net/sock.h:63: include/linux/filter.h:517:16: warning: comparison of integers of different signs: 'const __u32' (aka 'const unsigned int') and 'int' [-Wsign-compare] if (first->k == SKF_AD_OFF + SKF_AD_ALU_XOR_X) ~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from net/sched/sch_atm.c:12: In file included from include/linux/atmdev.h:12: include/net/sock.h:1878:54: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare] if (csum_and_copy_from_iter(to, copy, &csum, from) != copy) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~ include/net/sock.h:1882:46: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare] if (copy_from_iter_nocache(to, copy, from) != copy) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~ include/net/sock.h:1884:44: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare] } else if (copy_from_iter(to, copy, from) != copy) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~ In file included from net/sched/sch_atm.c:12: include/linux/atmdev.h:257:59: warning: comparison of integers of different signs: 'unsigned int' and 'int' [-Wsign-compare] return (size + atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) < ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ net/sched/sch_atm.c:478:26: warning: comparison of integers of different signs: 'unsigned int' and 'int' [-Wsign-compare] if (skb_headroom(skb) < flow->hdr_len) { ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~ 28 warnings generated. /tmp/sch_atm-753877.s: Assembler messages: /tmp/sch_atm-753877.s:987: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/sch_atm-753877.s:1114: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/sch_atm-753877.s:5165: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org