From owner-freebsd-hackers@FreeBSD.ORG Tue Apr 6 21:23:43 2010 Return-Path: Delivered-To: hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 73EBA106566B for ; Tue, 6 Apr 2010 21:23:43 +0000 (UTC) (envelope-from giovanni.trematerra@gmail.com) Received: from mail-fx0-f225.google.com (mail-fx0-f225.google.com [209.85.220.225]) by mx1.freebsd.org (Postfix) with ESMTP id 06DBB8FC0A for ; Tue, 6 Apr 2010 21:23:42 +0000 (UTC) Received: by fxm25 with SMTP id 25so96808fxm.3 for ; Tue, 06 Apr 2010 14:23:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=RB7fqksEGSfgSEw6DQkMeZQeaPn55NA2KS81vST+Qd4=; b=Pr0mqWbHPr9hDo1UOqdLfUU4mQvFVMom4mZ/Q+/vtQSRXkqbE2PDirt7RoqYdGTYVs YfWnTvfHf2Hd5C6rBMETr/pMaalbYfPazHrCFeN6dwi1GGvjCNtp35VBkD+6Bew7w+v7 wJy4hn9XXkWkFW0c7TpU2JwcDKo0qBkISG7z8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=PCGq3BtDzhBvfo30+LwJWiCmAz/hkh6rZxtn/otgsiALaoCd81e4FVMBShjDkwthVD 3nX+RPYvySIcUxYimJhkqCpDyC4N8QTYYwHhmItL12LpayfnqNBAUrKML60UDAXe6yQw L+/s7gd1z0zKScMi6DjGqNBzubGlDEfNS1UTc= MIME-Version: 1.0 Received: by 10.223.110.201 with HTTP; Tue, 6 Apr 2010 14:00:56 -0700 (PDT) In-Reply-To: References: Date: Tue, 6 Apr 2010 23:00:56 +0200 Received: by 10.223.5.5 with SMTP id 5mr7650506fat.80.1270587656947; Tue, 06 Apr 2010 14:00:56 -0700 (PDT) Message-ID: From: Giovanni Trematerra To: Paul Halliday Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: hackers@freebsd.org Subject: Re: Panic: sleeping thread X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Apr 2010 21:23:43 -0000 On Tue, Apr 6, 2010 at 9:17 PM, Paul Halliday wro= te: > ---------- Forwarded message ---------- > From: Paul Halliday > Date: Thu, Apr 1, 2010 at 8:38 AM > Subject: Re: panic: sleeping thread > To: questions@freebsd.org > > > On Mon, Mar 22, 2010 at 9:28 AM, Paul Halliday = wrote: >> I have a couple VM's that randomly halt with this error: >> >> Sleeping thread (tid 10018, pid 1058) owns a non-sleepable lock >> panic: sleeping thread >> cpuid =3D 0 >> Uptime 11h14m31s >> Cannot dump. Device not defined or unavailable. >> >> FreeBSD 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08 UTC >> 2009 =A0 =A0 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC >> amd64 >> >> These systems run nightly Nessus scans and these halts are very >> sporadic; I can go a week w/o seeing one. >> >> What should I do to start to troubleshoot this? You might want to obtain a kernel dump. Take a look at http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html -- Gianni