Hi,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/dlinkin-nvidia-com/devlink-rate-objects-API/20210421-235552
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git a926c025d56bb1acd8a192fca0e307331ee91b30
config: i386-randconfig-r003-20210421 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/41e85f4367c5e6dea30a0ab3c2a2162506647aaf
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review dlinkin-nvidia-com/devlink-rate-objects-API/20210421-235552
        git checkout 41e85f4367c5e6dea30a0ab3c2a2162506647aaf
        # save the attached .config to linux build tree
        make W=1 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 >>):

   ld: drivers/net/netdevsim/dev.o: in function `nsim_rate_bytes_to_units':
>> drivers/net/netdevsim/dev.c:1010: undefined reference to `__umoddi3'


vim +1010 drivers/net/netdevsim/dev.c

  1001	
  1002	#define NSIM_LINK_SPEED_MAX     5000 /* Mbps */
  1003	#define NSIM_LINK_SPEED_UNIT    125000 /* 1 Mbps given in bytes/sec to avoid
  1004						* u64 overflow during conversion from
  1005						* bytes to bits.
  1006						*/
  1007	
  1008	static int nsim_rate_bytes_to_units(char *name, u64 *rate, struct netlink_ext_ack *extack)
  1009	{
> 1010		u64 val = *rate;
  1011	
  1012		if (val % NSIM_LINK_SPEED_UNIT) {
  1013			pr_err("%s rate value %lluBps not in link speed units of 1Mbps.\n",
  1014			       name, val);
  1015			NL_SET_ERR_MSG_MOD(extack, "TX rate value not in link speed units of 1Mbps.");
  1016			return -EINVAL;
  1017		}
  1018	
  1019		val = div_u64(val, NSIM_LINK_SPEED_UNIT);
  1020		if (val > NSIM_LINK_SPEED_MAX) {
  1021			pr_err("%s rate value %lluMbps exceed link maximum speed 5000Mbps.\n",
  1022			       name, val);
  1023			NL_SET_ERR_MSG_MOD(extack, "TX rate value exceed link maximum speed 5000Mbps.");
  1024			return -EINVAL;
  1025		}
  1026		*rate = val;
  1027		return 0;
  1028	}
  1029	

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