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Date:      Fri, 18 Jan 2013 16:17:08 +0200
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Larry Rosenman <ler@lerctr.org>
Cc:        freebsd-current@FreeBSD.org, freebsd-amd64@FreeBSD.org
Subject:   Re: My panic in amd64/pmap
Message-ID:  <50F95964.6060706@FreeBSD.org>
In-Reply-To: <38def6b37be1a3128fb1b64595e9044e@webmail.lerctr.org>
References:  <38def6b37be1a3128fb1b64595e9044e@webmail.lerctr.org>

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on 17/01/2013 21:50 Larry Rosenman said the following:
> I've now seen this panic:
>  pmap_insert_pt_page: pindex already inserted
> 
> on 9.1-RELEASE, 9.1-STABLE, and 10.0-CURRENT
> 
> I've got vmcore's from the 9.1-STABLE and 10.0-CURRENT VM's available
> as well as sources.
> 
> I have the core.txt.* files available at:
> http://www.lerctr.org/~ler/core.txt.0  (10.0)
> http://www.lerctr.org/~ler/core.txt.2  (9.1-S)
> 
> I'm not sure what other debug info you need.
> 
> I can provide SSH access to both VM's as well as the host.
> 
> These are all in VirtualBox 4.2.6 VM's
> 
> Any help would be appreciated.

Hmm, I wonder if VirtualBox is hitting the same popcnt bug that was fixed in qemu...

Could you please try a patch from here
http://thread.gmane.org/gmane.comp.emulators.qemu/174532/focus=174567 ?

It should be applied to src/recompiler/target-i386/translate.c, make sure that it
goes to a section marked as 'case 0x1b8: /* SSE4.2 popcnt */'.

-- 
Andriy Gapon



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