linux-kernel - Re: [kbuild-all] Re: ERROR: start_text address is c000000000000200, should be c000000000000100

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Date:   Mon, 6 Sep 2021 18:56:20 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        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: [kbuild-all] Re: ERROR: start_text address is c000000000000200,
 should be c000000000000100



On 9/6/2021 2:13 AM, Randy Dunlap wrote:
> 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.
> 

Hi Randy,

Thanks for the explanation, We'll enable these configs.

Best Regards,
Rong Chen

> 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)
>