Hi Rocco, Thank you for the patch! Yet something to improve: [auto build test ERROR on net-next/master] [also build test ERROR on net/master linus/master v5.12 next-20210429] [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/Rocco-Yue/rtnetlink-add-rtnl_lock-debug-log/20210429-151958 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 4a52dd8fefb45626dace70a63c0738dbd83b7edb config: m68k-allmodconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/662e06d6ff200b5cee31d3615a7b2a5079cc5c0a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Rocco-Yue/rtnetlink-add-rtnl_lock-debug-log/20210429-151958 git checkout 662e06d6ff200b5cee31d3615a7b2a5079cc5c0a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): m68k-linux-ld: kernel/stacktrace.o: in function `stack_trace_save': >> (.text+0x144): undefined reference to `save_stack_trace' Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for STACKTRACE Depends on STACKTRACE_SUPPORT Selected by - RTNL_LOCK_DEBUG --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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