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Date:      Tue, 09 Feb 1999 14:11:32 +0000
From:      David Malone <dwmalone@maths.tcd.ie>
To:        Dom Mitchell <dom@myrddin.demon.co.uk>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: Lots of "panic: vrele: negative ref cnt" 
Message-ID:   <9902091411.aa13395@salmon.maths.tcd.ie>
In-Reply-To: Your message of "Sat, 06 Feb 1999 17:58:07 GMT." <E109Bzb-0000L4-00.qmail@myrddin.demon.co.uk> 

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> I've seen identical panics when using nmh's spost command to send
> mail.  Instant panic saying "negative ref cnt".  This is using an NFS
> mounted home directory (containing the draft mail to be sent).
> Unfortunately, I didn't have time to investigate further, so I just
> switched over to using SMTP instead.

We think we've sorted out this problem. Trying to make a cross device link
to an NFS filesystem decreases the reference count twice, so if you do this
a few times you can panic a machine. I've submitted a gnats report
(kern/9970).

	David.

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