From owner-freebsd-hackers  Thu Feb  8 14:15:19 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id OAA03105
          for hackers-outgoing; Thu, 8 Feb 1996 14:15:19 -0800 (PST)
Received: from zip0.zipnet.net (root@zip0.zipnet.net [204.176.87.20])
          by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA03100
          for <freebsd-hackers@freebsd.org>; Thu, 8 Feb 1996 14:15:15 -0800 (PST)
Received: (from ejon@localhost) by zip0.zipnet.net (8.6.12/8.6.12) id RAA00401; Thu, 8 Feb 1996 17:15:03 -0500
From: Eric Jones <ejon@zipnet.net>
Message-Id: <199602082215.RAA00401@zip0.zipnet.net>
Subject: vm problem in 2.1-stable
To: freebsd-hackers@freebsd.org
Date: Thu, 8 Feb 1996 17:15:03 -0500 (EST)
Cc: wink@zip0.zipnet.net (Jim Winkleman), ejon@zip0.zipnet.net (Eric Jones)
X-Mailer: ELM [version 2.4 PL24 ME8]
Content-Type: text
Sender: owner-hackers@freebsd.org
Precedence: bulk

Dear Cognosenti,
	I'm running a 2.1-stable system taken from the tree on or
about December 6, and have had a perplexing crash.  I'm wondering if
this sounds familiar to anybody and whether it's a known (and hopefully
fixed!) bug.
	A user (unprivileged) was running mail (yes, /usr/bin/mail).
When he exited, the process hung in a vmopar state.  At approximatly
the same time a message was logged to /var/log/messages which said:

/kernel: biodone: buffer already done

Some hours later (the process was still hung) the same user attempted
to invoke mail again.  This brought on a system panic, which logged
the message:

/kernel: panic: vinvalbuf: flush failed

Unfortunately, I don't have a dump to do a postmortem on.  If it happens
again, I will.

Any and all suggestions are welcome.
Please send them to ejon@zipnet.net, as I'm currently too mobile
to subscribe to ANY mailing lists.  Also please cc: wink@tiac.net
as he is definitely interested in the outcome of discussions.

Thanks,
Eric