From owner-freebsd-virtualization@FreeBSD.ORG  Tue May 12 14:01:24 2015
Return-Path: <owner-freebsd-virtualization@FreeBSD.ORG>
Delivered-To: freebsd-virtualization@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id A92734BD
 for <freebsd-virtualization@freebsd.org>; Tue, 12 May 2015 14:01:24 +0000 (UTC)
Received: from mout.gmx.net (mout.gmx.net [212.227.15.19])
 (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "mout.gmx.net", Issuer "TeleSec ServerPass DE-1" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 41F6311A3
 for <freebsd-virtualization@freebsd.org>; Tue, 12 May 2015 14:01:24 +0000 (UTC)
Received: from moby.local ([92.211.154.134]) by mail.gmx.com (mrgmx002) with
 ESMTPSA (Nemesis) id 0Lg0sd-1ZXt8y3f4t-00pb65 for
 <freebsd-virtualization@freebsd.org>; Tue, 12 May 2015 16:01:15 +0200
Message-ID: <55520784.9050508@gmx.com>
Date: Tue, 12 May 2015 16:00:36 +0200
From: Nikos Vassiliadis <nvass@gmx.com>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:31.0) Gecko/20100101 Thunderbird/31.6.0
MIME-Version: 1.0
To: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>
Subject: adding vtnet to bridge results to kernel panic
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Provags-ID: V03:K0:tHi6h2lOl1/wWuXNhIO5oKjUUzzc3tPb+5pRLdSu4DGv9nqRFql
 Rv15vlPwgaI9bEIQxHE8d5gaFPB0+ly6P8hy7HDBcoJ+ZYv8ziO/tM+poQdCekA7HcVNgHz
 9JsRemtlcZNTrr1uMB4PF82mXiN5YNUVCCQJPvm7KXHEcDbEXY4ISlw05DvZ4mMDlx1jj1Y
 juwWkSy3jd4OZ2xFVusvA==
X-UI-Out-Filterresults: notjunk:1;
X-BeenThere: freebsd-virtualization@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: "Discussion of various virtualization techniques FreeBSD supports."
 <freebsd-virtualization.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-virtualization/>
List-Post: <mailto:freebsd-virtualization@freebsd.org>
List-Help: <mailto:freebsd-virtualization-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 12 May 2015 14:01:24 -0000

Hi,

I get this panic when I add vtnet0 to a bridge.

>
> Unread portion of the kernel message buffer:
> panic: if_setflag: decrement non-positive refcount 0 for flag 256
> cpuid = 1
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01a5be54c0
> vpanic() at vpanic+0x189/frame 0xfffffe01a5be5540
> kassert_panic() at kassert_panic+0x132/frame 0xfffffe01a5be55b0
> if_setflag() at if_setflag+0x147/frame 0xfffffe01a5be5610
> ifpromisc() at ifpromisc+0x2c/frame 0xfffffe01a5be5640
> bridge_delete_member() at bridge_delete_member+0x3a8/frame 0xfffffe01a5be56c0
> bridge_ioctl_add() at bridge_ioctl_add+0x574/frame 0xfffffe01a5be5710
> bridge_ioctl() at bridge_ioctl+0x1ad/frame 0xfffffe01a5be57b0
> ifioctl() at ifioctl+0x9df/frame 0xfffffe01a5be5860
> kern_ioctl() at kern_ioctl+0x230/frame 0xfffffe01a5be58c0
> sys_ioctl() at sys_ioctl+0x153/frame 0xfffffe01a5be59a0
> amd64_syscall() at amd64_syscall+0x27f/frame 0xfffffe01a5be5ab0
> Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe01a5be5ab0
> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8011e09aa, rsp = 0x7fffffffe1f8, rbp = 0x7fffffffe2a0 ---
> KDB: enter: panic

Thanks in advance for any ideas,
Nikos