[paulmck-rcu:mmap_sem.2023.10.18a 31/31] task_mmu.c:undefined reference to `__bad_udelay'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git mmap_sem.2023.10.18a
head:   4015256f2bc734d4175381762282784597f41cfa
commit: 4015256f2bc734d4175381762282784597f41cfa [31/31] EXP TESTING: introduce delay between getting a VMA and using it in show_map
config: arm-randconfig-002-20231019 (https://download.01.org/0day-ci/archive/20231020/202310200320.JSEpTicA-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231020/202310200320.JSEpTicA-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/202310200320.JSEpTicA-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: fs/proc/task_mmu.o: in function `show_map':
>> task_mmu.c:(.text+0x6c4): undefined reference to `__bad_udelay'

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