From owner-freebsd-net@FreeBSD.ORG Wed Apr 15 10:50:05 2009 Return-Path: Delivered-To: freebsd-net@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5171E106568B for ; Wed, 15 Apr 2009 10:50:05 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 3E2A28FC1D for ; Wed, 15 Apr 2009 10:50:05 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n3FAo5dZ023804 for ; Wed, 15 Apr 2009 10:50:05 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n3FAo5CG023803; Wed, 15 Apr 2009 10:50:05 GMT (envelope-from gnats) Date: Wed, 15 Apr 2009 10:50:05 GMT Message-Id: <200904151050.n3FAo5CG023803@freefall.freebsd.org> To: freebsd-net@FreeBSD.org From: Dennis Melentyev Cc: Subject: Re: kern/133572: [ppp] [hang] incoming PPTP connection hangs the system X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Dennis Melentyev List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Apr 2009 10:50:06 -0000 The following reply was made to PR kern/133572; it has been noted by GNATS. From: Dennis Melentyev To: Max Laier Cc: bug-followup@freebsd.org Subject: Re: kern/133572: [ppp] [hang] incoming PPTP connection hangs the system Date: Wed, 15 Apr 2009 13:27:41 +0300 Hi Max, It was some hard time for me, sorry for late response. I did enabled KDB, DDB and WITNESS on the same sources. Unfortunately there was just plain hangs once some GRE was trying to get through (netgraph? PF? routing?) With these options enabled, hangs are much more often than without them. Once hung, no way to break into debugger, no panics, numlock not changing lights on keyboard, mouse not responding, hdd silent, network not available, nothing. 3 different HW platforms were tried (all of them were UP+i386+32bit). Highest CPU temperature was 52C. No chance to go with 7.2-PRERELEASE. Had to downgrade to 7.1-RELEASE. /dennis 2009/4/11 Max Laier : > Is it possible for you to turn on WITNESS on this machine to obtain possi= ble > LORs that might be responsible for the hang? =C2=A0Also, do you have the > possibility to enable DDB and drop into it from the console (if it is not= a > hard hang but a live lock)? > > -- > =C2=A0Max > --=20 Dennis Melentyev