From owner-freebsd-current@FreeBSD.ORG Thu Jan 24 13:18:58 2008 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 848B816A417 for ; Thu, 24 Jan 2008 13:18:58 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.156]) by mx1.freebsd.org (Postfix) with ESMTP id 11B6213C46B for ; Thu, 24 Jan 2008 13:18:57 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: by fg-out-1718.google.com with SMTP id 16so251591fgg.35 for ; Thu, 24 Jan 2008 05:18:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; bh=h/aU4/fxnfTmVAORFA+9rxzgsJ+NO7NvuIrH0dkHgLE=; b=ERHQocDTHTCcaFnIefR9Aws+zjUYdUMxU/HAqrmVF/P4VXp21D1XbILsNdPHN0VbNo9GjpO3/2KkmwefcmC3h8rSjQKRJNhxS5AKuWBm/htrioxCjic2SvqHF7yM48owXwVrDuP3d5sWr51i5Tqhb84G2/CKMoNbvyV9UQPvdJ4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=E+3jAcWdoa8JxyVf0AGUx6ijq8AFjA42Jv1nVLglheortvX65UE4Z0fO2RRFdaB1y+KEnAocS4vdr38FsnIpp9aY/lPjcque7iHW+HiwQPxtKqjuPTZOXcCs8nZem6MiacJCaFKCP1FZUqV8X4Y7DTvGXZwcy1DTuKbs498d62k= Received: by 10.86.99.9 with SMTP id w9mr610390fgb.22.1201180736963; Thu, 24 Jan 2008 05:18:56 -0800 (PST) Received: by 10.86.53.7 with HTTP; Thu, 24 Jan 2008 05:18:56 -0800 (PST) Message-ID: <3bbf2fe10801240518i6e18b2f5w84de652d4170c95b@mail.gmail.com> Date: Thu, 24 Jan 2008 14:18:56 +0100 From: "Attilio Rao" Sender: asmrookie@gmail.com To: "Yar Tikhiy" In-Reply-To: <20080124122808.GA15600@freefall.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <790a9fff0801150552l542a4238ofc12efe5fdb45fc2@mail.gmail.com> <20080115143924.GB57756@deviant.kiev.zoral.com.ua> <20080124122808.GA15600@freefall.freebsd.org> X-Google-Sender-Auth: 95af06cbb3fa0c88 Cc: Kostik Belousov , freebsd-current@freebsd.org Subject: Re: panic: System call lstat returning with 1 locks held 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: Thu, 24 Jan 2008 13:18:58 -0000 2008/1/24, Yar Tikhiy : > On Tue, Jan 15, 2008 at 04:39:24PM +0200, Kostik Belousov wrote: > > > > I think this could be related to the recent vn_lock()/VOP_LOCK() KPI changes. > > Please, add DEBUG_VFS_LOCKS to the kernel config, and do the > > show lockedvnods > > from the ddb prompt when the panic occurs. The witness does not track > > the lockmgr locks. > > I think I'm seeing the same panic on UFS. It's rather nasty: I > cannot rebuild CURRENT natively due to it so I have to build it > under 6-STABLE. My favourite way to trigger the panic reliably is > running `make install' in a simple port directory, e.g., portmaster, > but my system also panics during daily scripts run and, as already > said, if trying to build world. Yar, as it seems reproducible for you, can you please add this patch to the tree: http://www.freebsd.org/~attilio/debug_tdlocks.diff compile your kernel with: options KTR options KTR_COMPILE=(KTR_SPARE2) options KTR_MASK=(KTR_SPARE2) options KTR_ENTRIES=32768 and once kernel panics, at ddb prompts do: > show ktr Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein