From owner-cvs-all@FreeBSD.ORG  Thu May  5 03:49:03 2005
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 8711616A4CE; Thu,  5 May 2005 03:49:03 +0000 (GMT)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 6EF1943D31; Thu,  5 May 2005 03:49:03 +0000 (GMT)
	(envelope-from dwhite@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id j453m8xK010286;
	Thu, 5 May 2005 03:48:08 GMT
	(envelope-from dwhite@repoman.freebsd.org)
Received: (from dwhite@localhost)
	by repoman.freebsd.org (8.13.1/8.13.1/Submit) id j453m8aC010285;
	Thu, 5 May 2005 03:48:08 GMT
	(envelope-from dwhite)
Message-Id: <200505050348.j453m8aC010285@repoman.freebsd.org>
From: Doug White <dwhite@FreeBSD.org>
Date: Thu, 5 May 2005 03:48:08 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: RELENG_5
Subject: cvs commit: src/sys/kern tty.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 05 May 2005 03:49:03 -0000

dwhite      2005-05-05 03:48:08 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5)
    sys/kern             tty.c 
  Log:
  Commit a workaround to panics in ttwwakeup() during open and closes of the
  terminal sharing /dev/console. Peek at tty structs passing through ttymalloc()
  and pass them to ttyrel() if they'd get reaped due to the refcount dropping
  to 0. Also loosen up the refcount check in ttyrel() to account for
  refcounting problems caused by the incestuous relationship. I left the
  KASSERT alone in case people want to look into the underlying issue.
  
  Reaping dying tty structs helps keep stale data from growing in the knote
  lists, which eventually get tripped over, causing the panic.
  
  This change does not apply to -CURRENT due to differences in tty handling.
  
  MFC after:      3 days
  
  Revision   Changes    Path
  1.228.2.4  +12 -2     src/sys/kern/tty.c