Hi Vladimir, I love your patch! Perhaps something to improve:
[auto build test WARNING on linus/master] [also build test WARNING on v5.10-rc7 next-20201209] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Vladimir-Oltean/net-bonding-retrieve-device-statistics-under-RTNL-not-RCU/20201201-025343 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b65054597872ce3aefbc6a666385eabdf9e288da config: mips-randconfig-r026-20201209 (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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://github.com/0day-ci/linux/commit/ae1fadfd6122065f2a211de176290d184fda525a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vladimir-Oltean/net-bonding-retrieve-device-statistics-under-RTNL-not-RCU/20201201-025343 git checkout ae1fadfd6122065f2a211de176290d184fda525a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): >> drivers/net/bonding/bond_main.c:3698:12: warning: unused function >> 'bond_get_lowest_level_rcu' static int bond_get_lowest_level_rcu(struct net_device ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set mips64r2 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/atomic.h", .line = 153, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif 1: ll $0, $1 # atomic_add addu $0, $2 sc $0, $1 beqz $0, 1b .set pop ' clang-12: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 12.0.0 (git://gitmirror/llvm_project 1968804ac726e7674d5de22bc2204b45857da344) Target: mipsel-unknown-linux-gnu Thread model: posix InstalledDir: /opt/cross/clang-1968804ac7/bin clang-12: note: diagnostic msg: Makefile arch drivers include kernel scripts source usr vim +/bond_get_lowest_level_rcu +3698 drivers/net/bonding/bond_main.c fe30937b65354c Eric Dumazet 2016-03-17 3696 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3697 #ifdef CONFIG_LOCKDEP b3e80d44f5b1b4 Taehee Yoo 2020-02-15 @3698 static int bond_get_lowest_level_rcu(struct net_device *dev) b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3699 { b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3700 struct net_device *ldev, *next, *now, *dev_stack[MAX_NEST_DEV + 1]; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3701 struct list_head *niter, *iter, *iter_stack[MAX_NEST_DEV + 1]; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3702 int cur = 0, max = 0; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3703 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3704 now = dev; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3705 iter = &dev->adj_list.lower; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3706 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3707 while (1) { b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3708 next = NULL; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3709 while (1) { b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3710 ldev = netdev_next_lower_dev_rcu(now, &iter); b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3711 if (!ldev) b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3712 break; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3713 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3714 next = ldev; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3715 niter = &ldev->adj_list.lower; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3716 dev_stack[cur] = now; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3717 iter_stack[cur++] = iter; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3718 if (max <= cur) b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3719 max = cur; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3720 break; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3721 } b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3722 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3723 if (!next) { b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3724 if (!cur) b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3725 return max; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3726 next = dev_stack[--cur]; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3727 niter = iter_stack[cur]; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3728 } b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3729 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3730 now = next; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3731 iter = niter; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3732 } b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3733 b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3734 return max; b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3735 } b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3736 #endif b3e80d44f5b1b4 Taehee Yoo 2020-02-15 3737 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
