tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 0b58e108042b0ed28a71cd7edf5175999955b233 commit: 3be88389f46263f166973e80e528dcc9268e24cb [9885/10451] rcu: Summarize RCU CPU stall warnings during CSD-lock stalls config: sparc-randconfig-r034-20220519 (https://download.01.org/0day-ci/archive/20240704/202407040055.af1kwNa1-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240704/202407040055.af1kwNa1-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202407040055.af1kwNa1-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): sparc64-linux-ld: kernel/rcu/tree.o: in function `check_cpu_stall': kernel/rcu/tree_stall.h:797:(.text+0x734c): undefined reference to `csd_lock_is_stuck' >> sparc64-linux-ld: kernel/rcu/tree_stall.h:797:(.text+0x7384): undefined reference to `csd_lock_is_stuck' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki