Subject: Re: port-i386/15377: pmap_page_remove: mapped page has invalid pv_ptp field
To: None <>
From: Manuel Bouyer <>
List: netbsd-bugs
Date: 01/26/2002 18:11:07
On Sat, Jan 26, 2002 at 02:35:51PM +0100, Manuel Bouyer wrote:
> >Description:
> 	This machine is a mail/http/ftp/anoncvs server, reasonably loaded.
> 	Tonight it paniced. On the console there was:
> 	pmap_page_remove: pg=0xc0393560: va=341000, pv_ptp=0xc03a8448
> 	pmap_page_remove: PTP's phy addr: actual=0, recorded=26a1000
> 	panic: pmap_page_remove: mapped managed page has invalid pv_ptp field
> 	syncing disks:
> 	and was hung at this point, so no core dump :(

I gathered some more infos from my logs MRTG graphs. At the time of the crash
is appears the machine was quite loaded, with low free RAM and it was paging
a bit. Quite higth disks network load, probably NFS, with 1600 interrupts/s.

Manuel Bouyer <>