Hi Frederic, kernel test robot noticed the following build errors: [auto build test ERROR on paulmck-rcu/dev] [also build test ERROR on linus/master v6.4-rc4 next-20230601] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Frederic-Weisbecker/rcu-Assume-IRQS-disabled-from-rcu_report_dead/20230531-182004 base: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev patch link: https://lore.kernel.org/r/20230531101736.12981-4-frederic%40kernel.org patch subject: [PATCH 3/9] rcu: Rename jiffies_till_flush to jiffies_lazy_flush config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20230602/202306020110.p6f7zsig-lkp@xxxxxxxxx/config) compiler: mips-linux-gcc (GCC) 12.3.0 reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/c07a1bea9df8b80429d4e24052d83de94f5ee160 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Frederic-Weisbecker/rcu-Assume-IRQS-disabled-from-rcu_report_dead/20230531-182004 git checkout c07a1bea9df8b80429d4e24052d83de94f5ee160 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=mips olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306020110.p6f7zsig-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "rcu_get_jiffies_lazy_flush" [kernel/rcu/rcuscale.ko] undefined! >> ERROR: modpost: "rcu_set_jiffies_lazy_flush" [kernel/rcu/rcuscale.ko] undefined! -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki