From owner-freebsd-bugs@FreeBSD.ORG Tue Sep 25 20:50:10 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2A93B106567A for ; Tue, 25 Sep 2012 20:50:10 +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 DEBCC8FC0C for ; Tue, 25 Sep 2012 20:50:09 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q8PKo9fS073570 for ; Tue, 25 Sep 2012 20:50:09 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q8PKo97X073569; Tue, 25 Sep 2012 20:50:09 GMT (envelope-from gnats) Resent-Date: Tue, 25 Sep 2012 20:50:09 GMT Resent-Message-Id: <201209252050.q8PKo97X073569@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, Ed Maste Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A0A8A106566B for ; Tue, 25 Sep 2012 20:40:45 +0000 (UTC) (envelope-from emaste@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 8C07D8FC08 for ; Tue, 25 Sep 2012 20:40:45 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q8PKejLk072823 for ; Tue, 25 Sep 2012 20:40:45 GMT (envelope-from emaste@freefall.freebsd.org) Received: (from emaste@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q8PKejqJ072822; Tue, 25 Sep 2012 20:40:45 GMT (envelope-from emaste) Message-Id: <201209252040.q8PKejqJ072822@freefall.freebsd.org> Date: Tue, 25 Sep 2012 20:40:45 GMT From: Ed Maste To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Subject: kern/172075: panic if an in-use tap interface is destroyed X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Ed Maste List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Sep 2012 20:50:10 -0000 >Number: 172075 >Category: kern >Synopsis: panic if an in-use tap interface is destroyed >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Sep 25 20:50:09 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Ed Maste >Release: FreeBSD 9.0-STABLE i386 >Organization: FreeBSD >Environment: System: FreeBSD freefall.freebsd.org 9.0-STABLE FreeBSD 9.0-STABLE #6 r235139: Tue May 8 21:19:03 UTC 2012 simon@freefall.freebsd.org:/usr/obj/usr/src/sys/FREEFALL i386 >Description: tap_destroy contains an assertion that the tap device is not open, which causes a panic if attempting to destroy that tap device. 211 static void 212 tap_destroy(struct tap_softc *tp) 213 { 214 struct ifnet *ifp = tp->tap_ifp; 215 216 /* Unlocked read. */ 217 KASSERT(!(tp->tap_flags & TAP_OPEN), 218 ("%s flags is out of sync", ifp->if_xname)); >How-To-Repeat: # ifconfig tap0 create # cat /dev/tap0 & # ifconfig tap0 destroy >Fix: >Release-Note: >Audit-Trail: >Unformatted: