From owner-freebsd-bugs@FreeBSD.ORG Wed Jan 29 22:10:01 2014 Return-Path: Delivered-To: freebsd-bugs@smarthost.ysv.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 0BCDD230 for ; Wed, 29 Jan 2014 22:10:01 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id BDE351A8A for ; Wed, 29 Jan 2014 22:10:00 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id s0TMA08l076213 for ; Wed, 29 Jan 2014 22:10:00 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.7/8.14.7/Submit) id s0TMA0dt076212; Wed, 29 Jan 2014 22:10:00 GMT (envelope-from gnats) Resent-Date: Wed, 29 Jan 2014 22:10:00 GMT Resent-Message-Id: <201401292210.s0TMA0dt076212@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Garrett Wollman Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9E30522B for ; Wed, 29 Jan 2014 22:09:46 +0000 (UTC) Received: from nfs-backup-1.csail.mit.edu (nfs-backup-1.csail.mit.edu [128.30.3.35]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 575441A86 for ; Wed, 29 Jan 2014 22:09:45 +0000 (UTC) Received: from nfs-backup-1.csail.mit.edu (localhost [127.0.0.1]) by nfs-backup-1.csail.mit.edu (8.14.7/8.14.7) with ESMTP id s0TM50HG006020 for ; Wed, 29 Jan 2014 17:05:00 -0500 (EST) (envelope-from wollman@nfs-backup-1.csail.mit.edu) Received: (from wollman@localhost) by nfs-backup-1.csail.mit.edu (8.14.7/8.14.7/Submit) id s0TM50IJ006019; Wed, 29 Jan 2014 17:05:00 -0500 (EST) (envelope-from wollman) Message-Id: <201401292205.s0TM50IJ006019@nfs-backup-1.csail.mit.edu> Date: Wed, 29 Jan 2014 17:05:00 -0500 (EST) From: Garrett Wollman To: FreeBSD-gnats-submit@freebsd.org X-Send-Pr-Version: 3.114 Subject: kern/186258: Heap overrun in mps(4) X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list Reply-To: Garrett Wollman List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Jan 2014 22:10:01 -0000 >Number: 186258 >Category: kern >Synopsis: Heap overrun in mps(4) >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jan 29 22:10:00 UTC 2014 >Closed-Date: >Last-Modified: >Originator: Garrett Wollman >Release: FreeBSD 9.2-STABLE amd64 >Organization: MIT Computer Science & Artificial Intelligence Laboratory >Environment: System: FreeBSD nfs-backup-1.csail.mit.edu 9.2-STABLE FreeBSD 9.2-STABLE #21 r261274M: Wed Jan 29 16:24:39 EST 2014 wollman@xyz.csail.mit.edu:/usr/obj/usr/src-9-stable/sys/CSAIL amd64 Problem occurs with all stable/9 after r254938. This machine is a Quanta QSSC-S99Q server with three mps(4) controllers connected via multiple paths to four 48-port Quanta DNS1700 disk shelves. >Description: If the kernel is not built with DEBUG_REDZONE, server crashes deterministically during boot. The buffer that is being overrun is never freed, so redzone(9) never gets a chance to dump a stack trace identifying where it was allocated. >How-To-Repeat: Try to boot 9-stable without DEBUG_REDZONE. >Fix: Unknown. >Release-Note: >Audit-Trail: >Unformatted: