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[Bug ld/14052] New: binutils 2.22.52.0.2 breaks 3.3.x kernel on i686


From: address@hidden
Subject: [Bug ld/14052] New: binutils 2.22.52.0.2 breaks 3.3.x kernel on i686
Date: Wed, 02 May 2012 19:29:41 +0000

http://sourceware.org/bugzilla/show_bug.cgi?id=14052

             Bug #: 14052
           Summary: binutils 2.22.52.0.2 breaks 3.3.x kernel on i686
           Product: binutils
           Version: 2.22
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: address@hidden
        ReportedBy: address@hidden
                CC: address@hidden
    Classification: Unclassified


On Wed, May 2, 2012 at 11:58 AM, PaweĊ‚ Sikora <address@hidden> wrote:
> Hi,
>
> with the latest binutils release we're observing weird kernel oopses on 
> *i686* architecture.
> i've compared the vmlinux and all kernel modules produced by binutils 
> 2.22.52.0.{1,2}
> and the only vmlinux differs. afaics there's a diff in size of few elf 
> sections
> (.rodata, .rel.rodata, __modver). is it expected or a potential bug?
>
> here're vmlinux binaries: http://pluto.agmk.net/b.tar.bz2
>

Reverting patches from this report:
http://sourceware.org/bugzilla/show_bug.cgi?id=13621
(modulo changes to linker.c since then) seem to fix the problem.

We're using gcc 4.6.3 and the ooops here happens when something hits the swap.

The similiar problem was spotted in Arch linux
https://bugs.archlinux.org/task/29694
and their solution was to remove the 13621 patch from arch binutils.

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