[paulmck-rcu:dev.2025.09.15a 45/45] ERROR: modpost: "init_srcu_struct_fast" [kernel/rcu/rcutorture.ko] undefined!

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2025.09.15a
head:   f81c21ec3fca688bfcb6fa0abaf70404655765dc
commit: f81c21ec3fca688bfcb6fa0abaf70404655765dc [45/45] rcutorture: Exercise DEFINE_STATIC_SRCU_FAST() and init_srcu_struct_fast()
config: arm-randconfig-003-20250920 (https://download.01.org/0day-ci/archive/20250920/202509201519.udl3bu3X-lkp@xxxxxxxxx/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 7c861bcedf61607b6c087380ac711eb7ff918ca6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250920/202509201519.udl3bu3X-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/202509201519.udl3bu3X-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "init_srcu_struct_fast" [kernel/rcu/rcutorture.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki