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    SubjectRe: [PATCH -tip tracing/kprobes 3/6] kprobes/x86: Fix to add __kprobes to in-kernel fault handing functions
    Frederic Weisbecker wrote:
    > On Wed, Sep 02, 2009 at 08:58:05AM -0400, Masami Hiramatsu wrote:
    >> Frederic Weisbecker wrote:
    >>> BTW, after your patchset:
    >>>
    >>> TEST posttest
    >>> Building modules, stage 2.
    >>> Error: c0101038: 2e a1 f8 b0 9e c0 mov %cs:0xc09eb0f8,%eax
    >>> Error: objdump says 6 bytes, but insn_get_length() says 10 (attr:40000)
    >>> make[1]: *** [posttest] Erreur 2
    >>> make: *** [bzImage] Erreur 2
    >>> make: *** Attente des tâches non terminées....
    >>> MODPOST 4 modules
    >>>
    >>>
    >>> I'm cross compiling from 64 to 32 using:
    >>>
    >>> make ARCH=x86
    >>>
    >>> I've attached my config.
    >>
    >> Aah, you might miss an important patch :D
    >> http://lkml.org/lkml/2009/8/28/367
    >>
    >> Thank you,
    >>
    >
    >
    > Well, even with this patch I have this problem occuring with
    > make ARCH=x86
    >
    > Error: c125d65d: 0f 6f 02 movq (%edx),%mm0
    > Error: objdump says 3 bytes, but insn_get_length() says 2 (attr:0)
    > make[1]: *** [posttest] Erreur 2
    > make: *** [bzImage] Erreur 2
    >
    > Hmm, may be that's because it doesn't support mmx instructions.
    > The whole patchset is on
    >
    > git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
    > tracing/kprobes
    >
    > Config and make V=1 log attached.

    Aah, Indeed. It's time to add MMX/SSE support on x86 insn decoder.

    Thank you for reporting!

    --
    Masami Hiramatsu

    Software Engineer
    Hitachi Computer Products (America), Inc.
    Software Solutions Division

    e-mail: mhiramat@redhat.com

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