From owner-cvs-src-old@FreeBSD.ORG  Sat Mar  5 20:37:03 2011
Return-Path: <owner-cvs-src-old@FreeBSD.ORG>
Delivered-To: cvs-src-old@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id C64EE1065687
	for <cvs-src-old@freebsd.org>; Sat,  5 Mar 2011 20:37:03 +0000 (UTC)
	(envelope-from dchagin@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id B47898FC12
	for <cvs-src-old@freebsd.org>; Sat,  5 Mar 2011 20:37:03 +0000 (UTC)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.4/8.14.4) with ESMTP id p25Kb3rE003770
	for <cvs-src-old@freebsd.org>; Sat, 5 Mar 2011 20:37:03 GMT
	(envelope-from dchagin@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.4/8.14.4/Submit) id p25Kb3XE003769
	for cvs-src-old@freebsd.org; Sat, 5 Mar 2011 20:37:03 GMT
	(envelope-from dchagin@repoman.freebsd.org)
Message-Id: <201103052037.p25Kb3XE003769@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	dchagin@repoman.freebsd.org using -f
From: Dmitry Chagin <dchagin@FreeBSD.org>
Date: Sat, 5 Mar 2011 20:36:42 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/kern kern_ktrace.c
X-BeenThere: cvs-src-old@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: **OBSOLETE** CVS commit messages for the src tree
	<cvs-src-old.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src-old>
List-Post: <mailto:cvs-src-old@freebsd.org>
List-Help: <mailto:cvs-src-old-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 05 Mar 2011 20:37:03 -0000

dchagin     2011-03-05 20:36:42 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_ktrace.c 
  Log:
  SVN rev 219311 on 2011-03-05 20:36:42Z by dchagin
  
  Partially reworked r219042.
  The reason for this is a bug at ktrops() where process dereferenced
  without having a lock. This might cause a panic if ktrace was runned
  with -p flag and the specified process exited between the dropping
  a lock and writing sv_flags.
  
  Since it is impossible to acquire sx lock while holding mtx switch
  to use asynchronous enqueuerequest() instead of writerequest().
  
  Rename ktr_getrequest_ne() to more understandable name [1].
  
  Requested by:   jhb [1]
  
  MFC after:      1 Week
  
  Revision  Changes    Path
  1.140     +21 -29    src/sys/kern/kern_ktrace.c