Subject: Re: pmap_page_remove: mapped managed page has invalid pv_ptp field
To: David W. Talmage <talmage@cmf.nrl.navy.mil>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: current-users
Date: 07/19/1999 15:51:52
On Mon, Jul 19, 1999 at 09:16:17AM -0400, David W. Talmage wrote:
> >I just got this panic on my 1.4G i386, while closing connection to a remote
> >system (so either ssh or the xterm in which it was running was exiting):
> >
> >pmap_page_remove: pg=0xf0311c94: va=3a000, pv_ptp=0xf0353550
> >pmap_page_remove: PTP's phys addr: actual=0, recorded=31a4000
> >panic: pmap_page_remove: mapped managed page has invalid pv_ptp field
> >syncing disks... 10 10 4 done
> 
> I've seen the same thing on my 1.3I i386 except that I wasn't running ssh.  I've seen it while running Netscape and Emacs at the same time on a 32MB Celeron system.

Sure, I have troubles on some machines since about 1.3I.
The strange thing is that I have others machines which are much more stable.
Sounds like a race condition with a very short window.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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