linux-kernel - Re: ERROR: start_text address is c000000000000200, should be c000000000000100

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Message-ID: <5de53d5c-f2c9-9aad-5981-76a6357b3e02@infradead.org>
Date:   Sun, 5 Sep 2021 11:13:00 -0700
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 c000000000000200, should be
 c000000000000100

On 9/5/21 12:17 AM, kernel test robot wrote:
> Hi Randy,
> 
> FYI, the error/warning still remains.
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   49624efa65ac9889f4e7c7b2452b2e6ce42ba37d
> commit: 47c258d71ebfc832a760a1dc6540cf3c33968023 powerpc/head_check: use stdout for error messages
> date:   3 weeks ago
> config: powerpc64-randconfig-s031-20210904 (attached as .config)
> compiler: powerpc64-linux-gcc (GCC) 11.2.0
> reproduce:
>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # apt-get install sparse
>          # sparse version: v0.6.4-rc1-dirty
>          # 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 attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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 c000000000000200, should be c000000000000100
>>> ERROR: try to enable LD_HEAD_STUB_CATCH config option
>>> ERROR: see comments in arch/powerpc/tools/head_check.sh


Following those instructions fixes this build error for me.
Can ktr/lkp do that?
Otherwise just ignore this ERROR.

Set CONFIG_EXPERT=y
and CONFIG_LD_HEAD_STUB_CATCH=y.

However, after doing that, I get these messages:

INFO: Uncompressed kernel (size 0x30ef664) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x3100000)

-- 
~Randy