From owner-freebsd-bugs@FreeBSD.ORG Sat Jul 23 10:50:20 2005 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 710F416A41F for ; Sat, 23 Jul 2005 10:50:20 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id BCA4B43D48 for ; Sat, 23 Jul 2005 10:50:19 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.3/8.13.3) with ESMTP id j6NAoJlZ040008 for ; Sat, 23 Jul 2005 10:50:19 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.3/8.13.1/Submit) id j6NAoJji040006; Sat, 23 Jul 2005 10:50:19 GMT (envelope-from gnats) Resent-Date: Sat, 23 Jul 2005 10:50:19 GMT Resent-Message-Id: <200507231050.j6NAoJji040006@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, Gabor Kovesdan Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0658816A41F for ; Sat, 23 Jul 2005 10:49:39 +0000 (GMT) (envelope-from root@catv-5062840d.catv.broadband.hu) Received: from catv-5062840d.catv.broadband.hu (catv-5062840d.catv.broadband.hu [80.98.132.13]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9B1F643D46 for ; Sat, 23 Jul 2005 10:49:38 +0000 (GMT) (envelope-from root@catv-5062840d.catv.broadband.hu) Received: by catv-5062840d.catv.broadband.hu (Postfix, from userid 0) id E99FEA1090; Sat, 23 Jul 2005 12:49:14 +0200 (CEST) Message-Id: <20050723104914.E99FEA1090@catv-5062840d.catv.broadband.hu> Date: Sat, 23 Jul 2005 12:49:14 +0200 (CEST) From: Gabor Kovesdan To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Gabor Kovesdan Subject: kern/83943: [panic!] on FreeBSD 6.0-BETA1 with nve X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Gabor Kovesdan List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Jul 2005 10:50:20 -0000 >Number: 83943 >Category: kern >Synopsis: [panic!] on FreeBSD 6.0-BETA1 with nve >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Jul 23 10:50:19 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Gabor Kovesdan >Release: FreeBSD 6.0-BETA1 amd64 >Organization: >Environment: System: FreeBSD dream 6.0-BETA1 FreeBSD 6.0-BETA1 #0: Tue Jul 12 09:02:51 UTC 2005 root@rat.samsco.home:/usr/obj/usr/src/sys/GENERIC amd64 >Description: FreeBSD has a kernel panic when using nve network interface. Unfortunately I'm not so familiar with kernel debugging and kernel bug reporting, and haven't found a good howto about this topic, but I was able to make a trace with ddb and copied it by hand: panic: nve_ifstart: attempted use of a free mbuf! cpuid=0 KDB: enter: panic [thread pid 35 tid 100034] Stopped at kdb_enter+0x2f: nop db> trace Tracing pid 35 tid 100034 td 0xffffff001ed224c0 kdb_enter() at kbd_enter+0x2f panic() at panic+0x3f7 nve_ifstart() at nve_ifstart+0x3f7 ether_output_frame() at ether_output_frame+0x390 ip_output() at ip_output+0xb17 tcp_output() at tcp_output+0x9ec tcp_input() at tcp_input+0x1789 ip_input() at ip_input+0x10d netisr_processqueue() at netisr_processqueue+0x17 swi_net() at swi_net+0xa8 ithread_loop() at ithread_loop+0xc8 fork_exit() at fork_exit+0xbb fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffffff951aed00, rbp = 0 --- I hope this helps, if it isn't please let me know what kind of information to provide and how to obtain it at the next crash. I've had this problem several times and the panic and the trace output was exactly the same. I've also got a vmcore dump, but it is hard to make it online, since I have 512 MB of memory and the bug is in my network interface user for internetworking, it would be difficult to upload it to my webpage. >How-To-Repeat: It comes randomly when using nve. >Fix: >Release-Note: >Audit-Trail: >Unformatted: