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Re: [Qemu-devel] [Bug 932487] [NEW] win32: git rev 59f971d crashes when
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [Bug 932487] [NEW] win32: git rev 59f971d crashes when accessing disk (coroutine issue) |
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Date: |
Thu, 16 Feb 2012 12:01:58 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20120131 Thunderbird/10.0 |
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.
Paolo
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