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

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Date:   Fri, 13 Nov 2020 10:17:30 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Laurent Vivier <lvivier@...hat.com>
Cc:     kernel test robot <lkp@...el.com>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: Re: ERROR: modpost: "mac_pton" undefined!

On Fri, Nov 13, 2020 at 01:38:40PM +0100, Laurent Vivier wrote:
> 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


NET isn't usually selected, maybe depends on NET

> I'm going to test with .config and post a patch.
> 
> thanks,
> Laurent