linux-kernel - Re: aarch64-linux-ld: Unexpected GOT/PLT entries detected!

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Message-ID: <202106021441.A256AD6FC4@keescook>
Date:   Wed, 2 Jun 2021 14:42:18 -0700
From:   Kees Cook <keescook@...omium.org>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: aarch64-linux-ld: Unexpected GOT/PLT entries detected!

On Sun, May 30, 2021 at 09:29:28AM +0800, kernel test robot wrote:
> Hi Kees,
> 
> FYI, the error/warning still remains.
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   df8c66c4cfb91f2372d138b9b714f6df6f506966
> commit: be2881824ae9eb92a35b094f734f9ca7339ddf6d arm64/build: Assert for unwanted sections
> date:   9 months ago
> config: arm64-randconfig-r012-20210530 (attached as .config)
> compiler: aarch64-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=be2881824ae9eb92a35b094f734f9ca7339ddf6d
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout be2881824ae9eb92a35b094f734f9ca7339ddf6d
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 
> 
> 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 >>):
> 
> >> aarch64-linux-ld: Unexpected GOT/PLT entries detected!
> >> aarch64-linux-ld: Unexpected run-time procedure linkages detected!
>    aarch64-linux-ld: drivers/gpu/drm/pl111/pl111_versatile.o: in function `pl111_versatile_init':
>    (.text+0x270): undefined reference to `devm_regmap_init_vexpress_config'

When the other linker failures are fixed the GOT/PLT errors go away from
me. I'll send those patches separately...

-- 
Kees Cook