Subject: Re: "panic: extent_free: region not found" on AS4100, 1.6.x with
To: NetBSD port-alpha List <>
From: Michael L. Hitch <>
List: tech-kern
Date: 10/24/2005 10:53:28
On Mon, 24 Oct 2005, Greg A. Woods wrote:

> These two panics, which appear to be releated, have happened to my new
> AS4100 running NetBSD 1.6.x, now with three CPUs, and of course a mlx(4)
> (DCA960) RAID controller:
> Is there any further information I can try to find if this happens
> again?

No, this problem has already been identified, analyzed, and fixed.

 Revision 1.34 / (download) - annotate - [select for diffs], Sat Jul 30
17:37:11 2005 UTC (2 months, 3 weeks ago) by mhitch
Branch: MAIN
Changes since 1.33: +3 -2 lines
Diff to previous 1.33 (colored)

The handler for the periodic ENQUIRY command was not unmapping the ccb
data buffer, which left stale flags which caused Alpha ES40 crashes.  Add
the mlx_ccb_unmap() call and the ES40 now runs with > 1GB memory.

Michael L. Hitch
Computer Consultant
Information Technology Center
Montana State University	Bozeman, MT	USA