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Date:      Mon, 4 May 1998 11:40:29 -0500 (EST)
From:      "John S. Dyson" <dyson@FreeBSD.ORG>
To:        adkin003@tc.umn.edu (dave adkins)
Cc:        dyson@FreeBSD.ORG, freebsd-current@FreeBSD.ORG
Subject:   Re: cvs commit: src/sys/kern sysv_shm.c src/sys/vm swap_pager.c         vm_fault.c vm_map.c
Message-ID:  <199805041640.LAA02356@dyson.iquest.net>
In-Reply-To: <Pine.NEB.3.96.980504073603.1070A-100000@samthedog> from dave adkins at "May 4, 98 07:47:41 am"

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dave adkins said:
> 
> 
> On Sun, 3 May 1998, John Dyson wrote:
> 
> > dyson       1998/05/03 20:01:45 PDT
> > 
> >   Modified files:
> >     sys/kern             sysv_shm.c 
> >     sys/vm               swap_pager.c vm_fault.c vm_map.c 
> >   Log:
> >   Work around some VM bugs, the worst being an overly aggressive
> >   swap space free calculation.  More complete fixes will be forthcoming,
> >   in a week.
> >   
> >   Revision  Changes    Path
> >   1.36      +5 -1      src/sys/kern/sysv_shm.c
> >   1.95      +11 -8     src/sys/vm/swap_pager.c
> >   1.83      +3 -2      src/sys/vm/vm_fault.c
> >   1.124     +25 -15    src/sys/vm/vm_map.c
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe cvs-all" in the body of the message
> > 
> > 
> 
> Hi,
> 
> SYSVSHM causes a panic in vm_object_deallocate() with the message:
> 
> vm_object_deallocate: ref_count: 1, shadow_count: 1
> 
> This happens when the last reference to a sysv memory region is 
> deleted.
> 
What you are seeing is a "DIAGNOSTIC" panic that really isn't
indicating a problem.  I am reworking the issue, but for now, just
disable diagnostic.  I'll be committing a fix in an hour.

-- 
John                  | Never try to teach a pig to sing,
dyson@freebsd.org     | it just makes you look stupid,
jdyson@nc.com         | and it irritates the pig.

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