From owner-freebsd-current@FreeBSD.ORG Fri Jul 18 18:58:28 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 04D81106566B for ; Fri, 18 Jul 2008 18:58:28 +0000 (UTC) (envelope-from mgrooms@shrew.net) Received: from shrew.net (shrew.net [206.223.169.85]) by mx1.freebsd.org (Postfix) with ESMTP id D5A898FC14 for ; Fri, 18 Jul 2008 18:58:27 +0000 (UTC) (envelope-from mgrooms@shrew.net) Received: from localhost (wm-ca.hub.org [206.223.169.82]) by shrew.net (Postfix) with ESMTP id 57DBB79E30A for ; Fri, 18 Jul 2008 13:28:04 -0500 (CDT) Received: from shrew.net ([206.223.169.85]) by localhost (mx1.hub.org [206.223.169.82]) (amavisd-new, port 10024) with ESMTP id 77944-02 for ; Fri, 18 Jul 2008 18:28:04 +0000 (UTC) Received: from hole.shrew.net (cpe-70-113-206-103.austin.res.rr.com [70.113.206.103]) by shrew.net (Postfix) with ESMTP id CC2AF79E26A for ; Fri, 18 Jul 2008 13:28:03 -0500 (CDT) Received: from [10.22.200.30] ([10.22.200.30]) by hole.shrew.net (8.14.2/8.14.2) with ESMTP id m6IIRx0U045727 for ; Fri, 18 Jul 2008 13:27:59 -0500 (CDT) (envelope-from mgrooms@shrew.net) Message-ID: <4880E0AD.7020508@shrew.net> Date: Fri, 18 Jul 2008 13:27:57 -0500 From: Matthew Grooms User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: freebsd-current@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Fri, 18 Jul 2008 19:14:04 +0000 Subject: panic on tap device close ... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2008 18:58:28 -0000 All, I have seen this panic twice today with the kernel sources being just a few days old. The kdb output is in the form of a screen shot which was the best I could do at the time ... http://hole.shrew.net/~mgrooms/files/tap-crash.jpg This occurred doing some tests with the following code. It just creates a tap device, configures it with an address/netmask/mtu and holds the file descriptor open until is pressed. I ran it in one terminal and started fiddling with ifconfig and netstat in another terminal. The panic happens eventually when the taptest program exits ... http://hole.shrew.net/~mgrooms/files/taptest.cpp Thanks, -Matthew