linux-kernel - Re: 2.6.23-rc7-mm1

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Date:	Tue, 25 Sep 2007 04:57:21 +0530
From:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
To:	Sam Ravnborg <sam@...nborg.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Andy Whitcroft <apw@...dowen.org>
Subject: Re: 2.6.23-rc7-mm1

Sam Ravnborg wrote:
> On Mon, Sep 24, 2007 at 11:02:22PM +0200, Sam Ravnborg wrote:
>> Hi Kamalesh.
>>
>>> The link error for a PowerMac G5 (powerpc) is still seen with 
>>> 2.6.23-rc7-mm1,
>>> and was reported for 2.6.23-rc6-mm1 (http://lkml.org/lkml/2007/9/19/62).
>>>
>>>  KSYM    .tmp_kallsyms1.S
>>>  AS      .tmp_kallsyms1.o
>>>  LD      .tmp_vmlinux2
>>>  KSYM    .tmp_kallsyms2.S
>>>  AS      .tmp_kallsyms2.o
>>>  LD      vmlinux.o
>>> ld: dynreloc miscount for fs/built-in.o, section .opd
>>> ld: can not edit opd Bad value
>>> make: *** [vmlinux.o] Error 1
>> Can you try to narrow it down a bit further...
>> As this happens when building fs/built-in.o it should be
>> straightforward to do so.
>>
>> First step would be to do:
>> rm fs/built-in.o
>> make fs/ V=1
>>
>> Then copy the ld invocation and try to remove the input .o files one-by-one.
>> This should tell you which .o file is causing the bug.
>>
>> Next step is to try to squeze down the offending file until the
>> errornous part remains.
>>
>> Last time I did a
>> make fs/file.i
>>
>> And then I used gcc & ld to compile and link.
>> Gradually removing stuff from file.i made me spot the problem
>> with the weak prototype in a header file.
>>
>> I guess something else is making ld hit this error now.
>>
>> PS. Just reinstalled my dev box so no crosscompiler atm.
> 
> Got powerpc toolchain running now but cannot reproduce.
> What config do you use (I used g5_defconfig)?
> And what ld version?
> 
> 	Sam

Hi Sam,

root@...3b19:~# ld -v
GNU ld version 2.16.1 Debian GNU/Linux

root@...3b19:~# gcc -v
Using built-in specs.
Target: powerpc-linux-gnu
Configured with: ../src/configure -v --enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr --with-gxx-include-dir=/usr/include/c++/4.0.2 --enable-shared --with-system-zlib --libexecdir=/usr/lib --enable-nls --without-included-gettext --enable-threads=posix --program-suffix=-4.0 --enable-__cxa_atexit --enable-libstdcxx-allocator=mt --enable-clocale=gnu --enable-libstdcxx-debug --enable-java-gc=boehm --enable-java-awt=gtk-default --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre --enable-mpfr --disable-softfloat --enable-targets=powerpc-linux,powerpc64-linux --with-cpu=default32 --disable-werror --enable-checking=release powerpc-linux-gnu
Thread model: posix
gcc version 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9)

and the .config file is a custom file which i have attached.

-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.

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