tree:   https://github.com/zen-kernel/zen-kernel 5.15/bbr2
head:   de136008f854ed5dd68ee7b7f65ba23c2df6b960
commit: 16b8d7dfec9d9f7b8d182e58148af031bd2c4afa [14/28] net-tcp: re-generalize TSO sizing in TCP CC module API
config: i386-debian-10.3 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/16b8d7dfec9d9f7b8d182e58148af031bd2c4afa
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 5.15/bbr2
        git checkout 16b8d7dfec9d9f7b8d182e58148af031bd2c4afa
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

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

>> ERROR: modpost: "__divdi3" [net/ipv4/tcp_bbr.ko] undefined!
>> ERROR: modpost: "__udivdi3" [net/ipv4/tcp_bbr.ko] undefined!

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org