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Re: [Qemu-devel] Bug report - Windows XP guest failure

From: John Snow
Subject: Re: [Qemu-devel] Bug report - Windows XP guest failure
Date: Tue, 12 May 2015 12:18:05 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0

On 05/12/2015 03:22 AM, Michael Tokarev wrote:
> 12.05.2015 04:05, Peter Crosthwaite wrote:
>> On Thu, May 7, 2015 at 2:34 AM, Michael Tokarev <address@hidden> wrote:
> ...
>>>> Ok, I can reproduce this, winXP BSODs on boot in tcg mode.
>>>> Git bisect points to this:
>>>> commit 23820dbfc79d1c9dce090b4c555994f2bb6a69b3
>>>> Author: Peter Crosthwaite <address@hidden>
>>>> Date:   Mon Mar 16 22:35:54 2015 -0700
>>>>     exec: Respect as_translate_internal length clamp
>>> This winXP BSOD happens on x86_64 target too.  Reverting the
>>> above commit from git master fixes the BSOD.
>> Any useful info about IO addresses on that BSOD? The last issue with
>> this patch was IOPort code relying on the bug that this patch fixed.
>> This could be similar and if we can track the failure to a particular
>> address we can fix properly rather than another revert of that patch.
> Oh.  I didn't know this patch has been reverted before.  Anyway, I disabled
> auto-reboot on BSOD on my winXP (what a "useful" feature!) and here's what
> I see.
>   STOP: 0x0A (0x16, 0x02, 0x00, 0x80500EFC)
> (with some amount of leading zeros stripped).
> When this happens, win does something for quite some time, the BSOD comes
> after quite significant delay.
> Is there anything else I can look at, maybe some crash dump or something?
> I haven't done any windows debugging before.
> Thanks,
> /mjt


You can configure the type of dump it saves, then use various MS
utilities described here (briefly) to perform some basic analysis on the
dumps, which sometimes gives extra goodies.

I haven't done too much advanced windows debugging myself, but I do
generally try to run the !analyze command on any minidumps I create, at


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