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    SubjectRe: [tip:x86/urgent] x86: Add back _end symbol that is missing from Symbol.map

    * Sam Ravnborg <sam@ravnborg.org> wrote:

    > On Sun, Nov 08, 2009 at 11:07:12AM +0000, tip-bot for Hannes Reinecke wrote:
    > > Commit-ID: d1e4d37b79e944f6351ae38eb1ca7c9f7b506e76
    > > Gitweb: http://git.kernel.org/tip/d1e4d37b79e944f6351ae38eb1ca7c9f7b506e76
    > > Author: Hannes Reinecke <hare@suse.de>
    > > AuthorDate: Wed, 4 Nov 2009 07:19:32 -0800
    > > Committer: Ingo Molnar <mingo@elte.hu>
    > > CommitDate: Sun, 8 Nov 2009 12:05:03 +0100
    > >
    > > x86: Add back _end symbol that is missing from Symbol.map
    > >
    > > With 2.6.31 'crash' on x86_64 falls flat on its face as the
    > > '_end' symbol is missing from the System.map file.
    > >
    > > The culprit is commit 091e52c3551d3031343df24b573b770b4c6c72b6,
    > > which moved the '_end' symbol into it's own section. Apparently
    > > this causes kallsyms to not reference it properly.
    > >
    > > So do not include _end in it's own section.
    > >
    > > Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    > > Cc: Sam Ravnborg <sam@ravnborg.org>
    > > Cc: <stable@kernel.org> # .31.x
    > > LKML-Reference: <200911041519.nA4FJWEW030164@imap1.linux-foundation.org>
    > > Signed-off-by: Ingo Molnar <mingo@elte.hu>
    >
    > I'm afraid this will break a RELOCTABLE i386 kernel.
    >
    > We fixed this up some time ago where we had to
    > move the symbol definition inside a section
    > to prevent the symbol being absolute.

    ah, indeed. So ... the question is then, why did _end disappear from
    System.map?

    Ingo


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