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Date: Fri, 19 Jul 2013 15:23:28 -0400
From: Luiz Capitulino <lcapitulino@redhat.com>
Message-ID: <20130719152328.1669cb76@redhat.com>
In-Reply-To: <51E98E42.9060102@twiddle.net>
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Subject: Re: [Qemu-devel] Commit 23326164ae (exec: Support 64-bit op...)
 triggers assertion
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To: Richard Henderson <rth@twiddle.net>
Cc: pbonzini@redhat.com, qemu-devel <qemu-devel@nongnu.org>

On Fri, 19 Jul 2013 12:06:42 -0700
Richard Henderson <rth@twiddle.net> wrote:

> On 07/19/2013 10:28 AM, Luiz Capitulino wrote:
> > Hi,
> > 
> > Reproducer:
> > 
> > # ./qemu-qmp -drive file=disks/test.img,if=virtio,cache=none,aio=native \
> >   -enable-kvm -m 1G -monitor stdio  -usb -usbdevice host:1.43
> > QEMU 1.5.50 monitor - type 'help' for more information
> > (qemu) qemu-qmp: /home/lcapitulino/work/src/upstream/qmp-unstable/exec.c:1927: memory_access_size: Assertion `l >= access_size_min' failed.
> > 
> > I have an USB stick on 1.43, although I did manage to get this without
> > USB at all (forgot how, though).
> > 
> > Bisect says the bug was introduced by:
> > 
> > commit 23326164ae6fe8d94b7eff123e03f97ca6978d33
> > Author: Richard Henderson <rth@twiddle.net>
> > Date:   Mon Jul 8 14:55:59 2013 -0700
> > 
> >     exec: Support 64-bit operations in address_space_rw
> > 
> 
> Yes, we've already discussed it and agreed upon a solution.
> I guess it hasn't been applied yet?

Well, I saw the problem against latest upstream (HEAD 24943978c).