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[Xen-devel] Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Bastian Blank <waldi@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, 544145@xxxxxxxxxxxxxxx, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: [Xen-devel] Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Thu, 03 Sep 2009 15:06:32 -0700
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On 09/03/09 15:02, Bastian Blank wrote:
> AFAIK only AMD support the syscall instruction, so yes it is an AMD
> machine. And yes, disabling the only thing that make the glibc call this
> instruction works around it.
>   

The bug actually appears to be in xen_sysret32, ie the crash happens on
the way out of the kernel.

    J

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