linux-kernel - Re: ERROR: start_text address is c000000000000500, should be c000000000000100

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Date:   Thu, 25 Nov 2021 18:16:14 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>
Subject: Re: ERROR: start_text address is c000000000000500, should be
 c000000000000100

On 11/24/21 6:31 AM, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   5d9f4cf36721aba199975a9be7863a3ff5cd4b59
> commit: 47c258d71ebfc832a760a1dc6540cf3c33968023 powerpc/head_check: use stdout for error messages
> date:   3 months ago
> config: powerpc64-randconfig-r033-20211123 (https://download.01.org/0day-ci/archive/20211124/202111242215.KCExqByj-lkp@intel.com/config)
> compiler: powerpc64-linux-gcc (GCC) 11.2.0
> 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=47c258d71ebfc832a760a1dc6540cf3c33968023
>          git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>          git fetch --no-tags linus master
>          git checkout 47c258d71ebfc832a760a1dc6540cf3c33968023
>          # save the config file to linux build tree
>          mkdir build_dir
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash
> 
> 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 >>):
> 
>>> ERROR: start_text address is c000000000000500, should be c000000000000100
>>> ERROR: try to enable LD_HEAD_STUB_CATCH config option
>>> ERROR: see comments in arch/powerpc/tools/head_check.sh
> 
> ---


Hm, interesting. After following the directions above and setting
CONFIG_LD_HEAD_STUB_CATCH=y and then rebuilding, the "should be" address
has changed:

ERROR: start_text address is c000000000000500, should be c000000000000200
ERROR: try to enable LD_HEAD_STUB_CATCH config option
ERROR: see comments in arch/powerpc/tools/head_check.sh


Michael, any ideas?

-- 
~Randy