linux-kernel - Re: 2.6.18-rc4-mm3

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Message-ID: <Pine.LNX.4.64.0608291542350.5415@skynet.skynet.ie>
Date:	Tue, 29 Aug 2006 15:44:18 +0100 (IST)
From:	Mel Gorman <mel@....ul.ie>
To:	Andrew Morton <akpm@...l.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.18-rc4-mm3

On Mon, 28 Aug 2006, Andrew Morton wrote:

> On Mon, 28 Aug 2006 10:07:54 +0100
> mel@...net.ie (Mel Gorman) wrote:
>
>> On (26/08/06 16:09), Andrew Morton didst pronounce:
>>>
>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm3/
>>>
>>
>> This failed to build on two x86_64 machines I have access to with (one
>> on test.kernel.org);
>>
>>   OBJCOPY arch/x86_64/boot/compressed/vmlinux.bin
>>   BFD: Warning: Writing section `.data.percpu' to huge (ie negative)
>>   file offset 0x80471000.
>>   /usr/local/autobench/sources/x86_64-cross/gcc-3.4.0-glibc-2.3.2/bin/x86_64-unknown-linux-gnu-objcopy:
>>   arch/x86_64/boot/compressed/vmlinux.bin: File truncated
>>   make[2]: *** [arch/x86_64/boot/compressed/vmlinux.bin] Error 1
>>   make[1]: *** [arch/x86_64/boot/compressed/vmlinux] Error 2
>>   make: *** [bzImage] Error 2
>>   08/26/06-17:16:14 Build the kernel. Failed rc = 2
>>   08/26/06-17:16:14 build: kernel build Failed rc = 1
>>   08/26/06-17:16:14 command complete: (2) rc=126
>>   Failed and terminated the run
>>    Fatal error, aborting autorun
>>
>> CONFIG_NR_CPUS was 8. The build log can be seen at
>> http://test.kernel.org/abat/45342/debug/test.log.0 and the .config is at
>> http://test.kernel.org/abat/45342/build/dotconfig . I haven't done any
>> further investigation in case this is a known problem. If it's new, I'll
>> start digging.
>>
>
> hm.  It works for me.
>
> BINUTILS_DIR=binutils-2.16.1
> GCC_DIR=gcc-4.0.2
> GLIBC_DIR=glibc-2.3.6
>
> I guess one could poke around in vmlinux, find out what's happened to the
> .data.percpu section.  `readelf --sections vmlinux', etc?


There didn't seem to be anything unusual about the .data.percpu section It 
turned out to be a binutils version problem. On the two test machines, the 
cross-compiler from 
http://developer.osdl.org/dev/plm/cross_compile/x86_64-unknown-linux-gnu.tar.bz2 
was being used. When later versions were used, the problem disappeared.

Thanks

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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