linux-kernel - Re: ERROR: modpost: "mac

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Date:   Fri, 13 Nov 2020 13:38:40 +0100
From:   Laurent Vivier <lvivier@...hat.com>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: ERROR: modpost: "mac_pton" undefined!

On 13/11/2020 12:58, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   585e5b17b92dead8a3aca4e3c9876fbca5f7e0ba
> commit: 0c86d774883fa17e7c81b0c8838b88d06c2c911e vdpasim: allow to assign a MAC address
> date:   2 weeks ago
> config: openrisc-randconfig-r035-20201113 (attached as .config)
> compiler: or1k-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c86d774883fa17e7c81b0c8838b88d06c2c911e
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 0c86d774883fa17e7c81b0c8838b88d06c2c911e
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>, old ones prefixed by <<):
> 
>>> ERROR: modpost: "mac_pton" [drivers/vdpa/vdpa_sim/vdpa_sim.ko] undefined!
>

I think something like this might fix the problem.


diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig
index d7d32b656102..d2de1cefd5cb 100644
--- a/drivers/vdpa/Kconfig
+++ b/drivers/vdpa/Kconfig
@@ -13,6 +13,7 @@ config VDPA_SIM
        depends on RUNTIME_TESTING_MENU && HAS_DMA
        select DMA_OPS
        select VHOST_RING
+       select NET
        default n
        help
          vDPA networking device simulator which loop TX traffic back

I'm going to test with .config and post a patch.

thanks,
Laurent