From: Kevin Wolf <kwolf@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [Bug 932487] [NEW] win32: git rev 59f971d crashes when accessing disk (coroutine issue)
Date: Thu, 16 Feb 2012 12:15:30 +0100 [thread overview]
Message-ID: <4F3CE552.9000903@redhat.com> (raw)
In-Reply-To: <jhinn6$7g0$1@dough.gmane.org>
Am 16.02.2012 12:01, schrieb Paolo Bonzini:
> On 02/16/2012 11:34 AM, Kevin Wolf wrote:
>> Remember that I saw a similar crash a while ago? It was definitely a
>> NULL pointer access somewhere inside SwitchToFiber. I can't remember
>> exactly what came out of it, but I think you and Paolo couldn't
>> reproduce it and I ran out of time for debugging win32 stuff.
>>
>> If I was to debug this, the first thing I would try is that I would dump
>> co->fiber (or actually I seem to remember it was some data structure
>> that is only pointed to by a field in co->fiber) immediately after the
>> coroutine is created (I think it was still okay then) and set a
>> watchpoint on it.
>
> IIRC the problem was that thread-local storage was not thread-local at all.
Ah, right. And we didn't introduce a workaround, so I guess this is the
same thing.
Do newer mingw versions get this right or were you just lucky and we
should look for some kind of workaround?
Kevin
next prev parent reply other threads:[~2012-02-16 11:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-15 1:59 [Qemu-devel] [Bug 932487] [NEW] win32: git rev 59f971d crashes when accessing disk (coroutine issue) Roy Tam
2012-02-15 7:15 ` [Qemu-devel] [Bug 932487] " Roy Tam
2012-02-16 9:34 ` [Qemu-devel] [Bug 932487] [NEW] " Stefan Hajnoczi
2012-02-16 10:34 ` Kevin Wolf
2012-02-16 10:56 ` Roy Tam
2012-02-16 11:01 ` Paolo Bonzini
2012-02-16 11:15 ` Kevin Wolf [this message]
2012-02-16 13:13 ` Roy Tam
2012-02-16 16:05 ` Paolo Bonzini
2012-02-16 20:31 ` [Qemu-devel] [Bug 932487] " Stefan Weil
2012-02-16 20:42 ` Stefan Weil
2012-02-17 0:53 ` Roy Tam
2012-02-17 1:00 ` Roy Tam
2012-02-27 16:04 ` Paolo Bonzini
2012-02-27 15:17 ` Eric Lassauge
2012-03-20 6:38 ` Roy Tam
2012-03-20 9:07 ` Stefan Weil
2012-03-20 9:35 ` Roy Tam
2012-03-20 9:57 ` Paolo Bonzini
2016-12-11 7:19 ` Stefan Weil
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