From owner-freebsd-current@FreeBSD.ORG Wed Jan 16 07:01:46 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 C6FB116A421 for ; Wed, 16 Jan 2008 07:01:46 +0000 (UTC) (envelope-from swhetzel@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.158]) by mx1.freebsd.org (Postfix) with ESMTP id 4727913C4D5 for ; Wed, 16 Jan 2008 07:01:46 +0000 (UTC) (envelope-from swhetzel@gmail.com) Received: by fg-out-1718.google.com with SMTP id 16so172485fgg.35 for ; Tue, 15 Jan 2008 23:01:45 -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:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=SMgK0Fx/LImqn0OqAta+uq5izz04g98nNWjMgN7Q1Rg=; b=uufxv2B7ZWxr59H/uDTGGhQknUVjt8TD1GRKjN9Yc0e8Au62aWn8SuD/gaXDaOjJRfFX4Q9t53bbh1YSt+pic8enNg+78oUvM3ojDaBbsnqI+NJnUf1B0cbUI/XPs4PJqD54w9TNdasMu+bl9Yg/Fp9x2+R94uD2FCH9TdPuCwc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=fSH85jLekU/UDTOnNNuXVJEZFBROu1VlTBYhn9RK2LcW+hQTNuEzJoCw78s+az+iEDAZtNFV137jqC9mSmrepWV/GwO2WRuUXRFCEB/RWignZ3rEptQ67P9HzBA/mAvK5eqCuqyZluHBQSNtMBmcUY1pKD8axFJ8M+ohEK1LSOk= Received: by 10.86.77.5 with SMTP id z5mr408326fga.41.1200466905031; Tue, 15 Jan 2008 23:01:45 -0800 (PST) Received: by 10.86.3.20 with HTTP; Tue, 15 Jan 2008 23:01:45 -0800 (PST) Message-ID: <790a9fff0801152301l5d50461aw3a253608506368e2@mail.gmail.com> Date: Wed, 16 Jan 2008 01:01:45 -0600 From: "Scot Hetzel" To: "Kostik Belousov" In-Reply-To: <20080115143924.GB57756@deviant.kiev.zoral.com.ua> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <790a9fff0801150552l542a4238ofc12efe5fdb45fc2@mail.gmail.com> <20080115143924.GB57756@deviant.kiev.zoral.com.ua> Cc: 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: Wed, 16 Jan 2008 07:01:46 -0000 On 1/15/08, Kostik Belousov wrote: > On Tue, Jan 15, 2008 at 07:52:12AM -0600, Scot Hetzel wrote: > > When I boot a Jan 13th or Jan 15th kernel, and then run > > /usr/local/etc/cvsup/update.sh to update the local CVS repository, I > > get the following panic: > > > > panic: System call lstat returning with 1 locks held > > cpuid = 0 > > KDB: enter: panic > > [thread ; pid 1240 tid 10031] > > stopped at kdb_enter+0x3d: movq $0,0x41b048(%rip) > > db> show alllocks > > db> show locks > > db> bt > > tracing pid 1240 tid 10031 td 0xffffff001c1ad360 > > kdb_enter() at kdb_enter+0x3d > > panic() at panic+0x176 > > syscalls() at syscalls+0x66d > > Xfast_syscalls() at Xfast_syscalls+0xab > > --- syscall (0, FreeBSD ELF64, nosys), rip = 0x8009e87ec, rsp= > > 0x72ec50, rbp = 0x72ed28 --- > > > 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 added DEBUG_VFS_LOCKS to the kernel config file, rebuilt and installed the kernel. After rebooting the system, I started the cvsup update for my local mirror, when the panic occured I received a similar panic to the one above. When I used 'show lockedvnods' the only thing that was displayed was 'Locked vnodes' and that was it. I'm going to try a binary search to see if I can narrow the problem down. Scot