From owner-freebsd-stable@FreeBSD.ORG Mon Aug 11 22:33:08 2014 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id ED3FF9D5 for ; Mon, 11 Aug 2014 22:33:08 +0000 (UTC) Received: from hergotha.csail.mit.edu (wollman-1-pt.tunnel.tserv4.nyc4.ipv6.he.net [IPv6:2001:470:1f06:ccb::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AB5F32E26 for ; Mon, 11 Aug 2014 22:33:08 +0000 (UTC) Received: from hergotha.csail.mit.edu (localhost [127.0.0.1]) by hergotha.csail.mit.edu (8.14.7/8.14.7) with ESMTP id s7BMX66K040630; Mon, 11 Aug 2014 18:33:06 -0400 (EDT) (envelope-from wollman@hergotha.csail.mit.edu) Received: (from wollman@localhost) by hergotha.csail.mit.edu (8.14.7/8.14.4/Submit) id s7BMX54m040629; Mon, 11 Aug 2014 18:33:05 -0400 (EDT) (envelope-from wollman) Date: Mon, 11 Aug 2014 18:33:05 -0400 (EDT) From: Garrett Wollman Message-Id: <201408112233.s7BMX54m040629@hergotha.csail.mit.edu> To: jmg@funkthat.com Subject: Re: 9.3-RELEASE still instapanics on multi-mps(4) servers X-Newsgroups: mit.lcs.mail.freebsd-stable In-Reply-To: References: Organization: none X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (hergotha.csail.mit.edu [127.0.0.1]); Mon, 11 Aug 2014 18:33:06 -0400 (EDT) X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED autolearn=disabled version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on hergotha.csail.mit.edu Cc: stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Aug 2014 22:33:09 -0000 In article you write: >One thing you could do is turn on DEBUG_MEMGUARD and DEBUG_REDZONE >and see if they trigger... Did that last time around. Either one will prevent the problem entirely, without generating any diagnostics. -GAWollman -- Garrett A. Wollman | What intellectual phenomenon can be older, or more oft wollman@bimajority.org| repeated, than the story of a large research program Opinions not shared by| that impaled itself upon a false central assumption my employers. | accepted by all practitioners? - S.J. Gould, 1993