ERROR: modpost: "__ld_r13_to_r21_ret" [lib/zstd/zstd_decompress.ko] undefined!

[kernel test robot]

Hi Nick,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2cf0f715623872823a72e451243bbf555d10d032
commit: 2aa14b1ab2c41a4fe41efae80d58bb77da91f19f zstd: import usptream v1.5.2
date:   11 months ago
config: arc-buildonly-randconfig-r005-20230119 (https://download.01.org/0day-ci/archive/20230919/202309192139.AknLkasI-lkp@xxxxxxxxx/config)
compiler: arc-elf-gcc (GCC) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230919/202309192139.AknLkasI-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/202309192139.AknLkasI-lkp@xxxxxxxxx/

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

ERROR: modpost: "__st_r13_to_r22" [lib/zstd/zstd_decompress.ko] undefined!
ERROR: modpost: "__st_r13_to_r17" [lib/zstd/zstd_decompress.ko] undefined!
>> ERROR: modpost: "__ld_r13_to_r21_ret" [lib/zstd/zstd_decompress.ko] undefined!
>> ERROR: modpost: "__ld_r13_to_r19_ret" [lib/zstd/zstd_decompress.ko] undefined!
ERROR: modpost: "__ld_r13_to_r22_ret" [lib/zstd/zstd_decompress.ko] undefined!
ERROR: modpost: "__st_r13_to_r25" [lib/zstd/zstd_decompress.ko] undefined!
ERROR: modpost: "__st_r13_to_r24" [lib/zstd/zstd_decompress.ko] undefined!
ERROR: modpost: "__ld_r13_to_r17_ret" [lib/zstd/zstd_decompress.ko] undefined!
>> ERROR: modpost: "__st_r13_to_r21" [lib/zstd/zstd_decompress.ko] undefined!
>> ERROR: modpost: "__st_r13_to_r19" [lib/zstd/zstd_decompress.ko] undefined!
WARNING: modpost: suppressed 6 unresolved symbol warnings because there were too many)

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