linux-kernel - Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso

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Message-ID: <4AA03DE8.40706@goop.org>
Date:	Thu, 03 Sep 2009 15:06:32 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Bastian Blank <waldi@...ian.org>, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xensource.com, 544145@...s.debian.org,
	Keir Fraser <keir.fraser@...citrix.com>
Subject: Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso

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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