tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.4 head: f46a8a36a32444b67e9b727c36d1262f609bd974 commit: 061136b03d873f64e4821a330aa0c50a60b0c756 [14/15] vlan: consolidate VLAN parsing code and limit max parsing depth config: x86_64-randconfig-a003-20201209 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1968804ac726e7674d5de22bc2204b45857da344) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable queue-4.4 git checkout 061136b03d873f64e4821a330aa0c50a60b0c756 # 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 >>): ^~~~~~~~~ include/linux/compiler.h:182:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:16: include/linux/netdevice.h:3304:37: 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 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:20: In file included from include/linux/tcp.h:22: In file included from include/net/sock.h:62: 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:337:18: 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:372:21: 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:405:21: 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 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:20: In file included from include/linux/tcp.h:22: In file included from include/net/sock.h:62: 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 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:20: In file included from include/linux/tcp.h:22: In file included from include/net/sock.h:62: 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/bug.h:74:19: note: expanded from macro 'BUILD_BUG_ON' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^~~~~~~~~ include/linux/bug.h:50:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~ include/linux/compiler.h:511:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^~~~~~~~~ include/linux/compiler.h:499:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^~~~~~~~~ include/linux/compiler.h:491:19: note: expanded from macro '__compiletime_assert' bool __cond = !(condition); \ ^~~~~~~~~ In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:20: In file included from include/linux/tcp.h:22: In file included from include/net/sock.h:62: 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 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:20: In file included from include/linux/tcp.h:22: include/net/sock.h:1838:54: 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:1842:46: 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:1844:44: 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 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:8: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h:14: In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:20: In file included from include/linux/tcp.h:23: include/net/inet_connection_sock.h:294:38: warning: comparison of integers of different signs: 'int' and 'const u32' (aka 'const unsigned int') [-Wsign-compare] return inet_csk_reqsk_queue_len(sk) >= sk->sk_max_ack_backlog; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:312:14: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'int' [-Wsign-compare] if (seconds <= time_limit) ~~~~~~~ ^ ~~~~~~~~~~ drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:1399:16: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] for (i = 0; i < fw->size / sizeof(u32); i++) ~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c:1417:17: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] for (i = 0; i < (fw->size & 0xF); i++) ~ ^ ~~~~~~~~~~~~~~ 30 warnings generated. /tmp/qlcnic_83xx_init-385098.s: Assembler messages: /tmp/qlcnic_83xx_init-385098.s:18421: 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