ERROR: modpost: "vhost_iotlb_itree_next" undefined!

[kernel test robot]

Hi Eli,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d5beb3140f91b1c8a3d41b14d729aefa4dcc58bc
commit: 1a86b377aa2147a7c866b03142e848c18e5f3cb8 vdpa/mlx5: Add VDPA driver for supported mlx5 devices
date:   4 months ago
config: i386-randconfig-m021-20201124 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1a86b377aa2147a7c866b03142e848c18e5f3cb8
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 1a86b377aa2147a7c866b03142e848c18e5f3cb8
        # 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@xxxxxxxxx>

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

>> ERROR: modpost: "vhost_iotlb_itree_next" [drivers/vdpa/mlx5/mlx5_vdpa.ko] undefined!
>> ERROR: modpost: "vhost_iotlb_itree_first" [drivers/vdpa/mlx5/mlx5_vdpa.ko] undefined!

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Attachment: .config.gz
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