Subject: Re: kern/36388: data access fault in copyout when running savecore
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Martin Husemann <martin@duskware.de>
List: netbsd-bugs
Date: 05/30/2007 10:30:02
The following reply was made to PR kern/36388; it has been noted by GNATS.

From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/36388: data access fault in copyout when running savecore
Date: Wed, 30 May 2007 12:25:55 +0200

 This issue is harder to reproduce, and might be sparc64 specific. It happened
 for me because I booted a different kernel (not accessible on the root file
 system) and savecore did not get a -N argument passed.
 
 Using the proper kernel as /netbsd hides the problem.
 
 The mismatching kernel/symbol table result in a /dev/kmem read access where
 our tests indicate that the whole range should be readable, but we fault when
 copying out anyway. I'm still investigating.
 
 Martin