ERROR: modpost: "__mulsi3" undefined!

[kernel test robot]

Hi Jessica,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   5e857ce6eae7ca21b2055cca4885545e29228fe2
commit: 93c95e526a4ef00eb3d5a1e0920ba5a22f32e40d modpost: rework and consolidate logging interface
date:   3 months ago
config: nios2-randconfig-c003-20200619 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

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

>> ERROR: modpost: "__mulsi3" [net/sunrpc/auth_gss/auth_rpcgss.ko] undefined!
ERROR: modpost: "__mulsi3" [fs/cifs/cifs.ko] undefined!
ERROR: modpost: "__mulsi3" [fs/nfs/nfsv4.ko] undefined!

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Attachment: .config.gz
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