From owner-freebsd-current@FreeBSD.ORG Mon Apr 19 15:03:37 2010 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 81386106566B for ; Mon, 19 Apr 2010 15:03:37 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from ey-out-2122.google.com (ey-out-2122.google.com [74.125.78.24]) by mx1.freebsd.org (Postfix) with ESMTP id 116668FC25 for ; Mon, 19 Apr 2010 15:03:36 +0000 (UTC) Received: by ey-out-2122.google.com with SMTP id d26so268158eyd.9 for ; Mon, 19 Apr 2010 08:03:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:received:message-id:subject :from:to:cc:content-type:content-transfer-encoding; bh=eGXdZSGnLrYi6tTvPm7O5Yv1s2d3+Y4d4lvERxUxSAw=; b=mB6b5MM2R09p51uJNwLG8GyNor4NiXcK7IWUvvPkNM2uC43zco0+5Nf0AtQ9FXsh/8 vpKD7A9yLmGKoAk2xjnpcmj6Myf9Dce/sWQrXZDa1R2KY/aE4ZmPZWqn37O81lqfes/D QiDQabjzveAr6HbFpx0lC5z8bI9Cvk85V95No= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=cFYhPjS99/CVqy6xRTGdNbtAvXp6d8L3XXhMhbAye8szYB8d2/1ydONmw6N2b2RiVv tYo2WtaATB57zf+MjaaAy5esAccnaRZLOY7M26LZPruI00OdijZvYSmp7usfsoPUnsmi GuGXB56U0FEobPvhkHOK/dHdQU/EUV7fW/IsU= MIME-Version: 1.0 Sender: asmrookie@gmail.com Received: by 10.239.164.140 with HTTP; Mon, 19 Apr 2010 08:03:35 -0700 (PDT) In-Reply-To: References: Date: Mon, 19 Apr 2010 17:03:35 +0200 X-Google-Sender-Auth: 6b3ee1c103d80721 Received: by 10.239.154.73 with SMTP id d9mr495961hbc.135.1271689415667; Mon, 19 Apr 2010 08:03:35 -0700 (PDT) Message-ID: From: Attilio Rao To: Erik Cederstrand Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: FreeBSD Current Subject: Re: panic: deadlkres: possible deadlock detected 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: Mon, 19 Apr 2010 15:03:37 -0000 2010/4/19 Erik Cederstrand : > Hi > > I'm testing ClangBSD in a VirtualBox client and ran into a panic on the c= lient, but I don't think it's clang-related. I haven't tried kernel debuggi= ng before. I tried getting a backtrace as described in http://old.nabble.co= m/Re%3A-ia64--%3E-panic%3A-deadlkres%3A-possible-deadlock-detected-for-0xe0= 0000001187d880%2C-blocked-for-1801437-ticks-p28123802.html and this i the r= esult: > > http://tinypic.com/r/2llegza/5 > > Any pointers on ho to debug this further? I think we have to bless getblk. However your system may have got buffers shortage due to bufdaemon deficiencies. Are you using 8.0 or current? Attilio --=20 Peace can only be achieved by understanding - A. Einstein