From owner-freebsd-stable@FreeBSD.ORG Tue Dec 30 13:28:18 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 24A64106564A for ; Tue, 30 Dec 2008 13:28:18 +0000 (UTC) (envelope-from andy.kosela@gmail.com) Received: from mail-ew0-f21.google.com (mail-ew0-f21.google.com [209.85.219.21]) by mx1.freebsd.org (Postfix) with ESMTP id A944A8FC0C for ; Tue, 30 Dec 2008 13:28:17 +0000 (UTC) (envelope-from andy.kosela@gmail.com) Received: by ewy14 with SMTP id 14so6302774ewy.19 for ; Tue, 30 Dec 2008 05:28:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:date:from:to:subject :message-id:user-agent:mime-version:content-type :content-transfer-encoding; bh=WWyeoCwvCn3rg2nV2UTheatLtKRmyxKwALyaVGCMTEo=; b=eMSKEtH//VEuOElQOK6F7+K04hpZobiHOSwjQ9JwnT/mMCQJWPgPsnPTh5/AoQqpDq EhSyyWCacM/qacCQiEYMxf++07ObBQBAg6wTxmAly+o2Qy6/FddbRUoR4guPv3raqSrF E4V1dF8esBH4fIFx1zeiMZZRmkZBP7osZTE8Q= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:date:from:to:subject:message-id:user-agent:mime-version :content-type:content-transfer-encoding; b=ROOzkj/4HqnyyQNmiMiBrDpE1cvxn1j7+PSS4v96ryxpH//nu2aZQBuhaoTK7PBukw ZCqcqEQu2Em9heDhUuTq33QQhPHHzwM2/2CWRjZRXWDduK8rcE840X6JBb6WDfnwFAD7 oe4jcQRFomiF8h8bMsWmSNYeloZG+mTD6kthE= Received: by 10.210.66.13 with SMTP id o13mr17287086eba.125.1230642440537; Tue, 30 Dec 2008 05:07:20 -0800 (PST) Received: from localhost (gw.um.lublin.pl [193.93.68.19]) by mx.google.com with ESMTPS id f8sm30174611nfh.37.2008.12.30.05.07.18 (version=TLSv1/SSLv3 cipher=RC4-MD5); Tue, 30 Dec 2008 05:07:19 -0800 (PST) Sender: Andy Kosela Date: Tue, 30 Dec 2008 14:06:42 +0100 From: Andy Kosela To: freebsd-stable@freebsd.org Message-ID: <495a1ce2.745j5raQeCdEOfx4%akosela@andykosela.com> User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: rdump stuck in sbwait state (RELENG_7) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Dec 2008 13:28:18 -0000 I'm pretty sure it's caused by FreeBSD. It can very well be related to PR 117603, a real nasty dump(8) bug that was introduced in 7.0 on SMP systems. But it should have been patched back in March by this: jeff 2008-03-13 00:46:12 UTC FreeBSD src repository Modified files: sys/kern subr_sleepqueue.c Log: PR 117603 - Close a sleepqueue signal race by interlocking with the per-process spinlock. This was mistakenly omitted from the thread_lock patch and has been a race since. MFC After: 1 week PR: bin/117603 Reported by: Danny Braniss Revision Changes Path 1.48 +5 -2 src/sys/kern/subr_sleepqueue.c So I'm real surprised it shows up again. We got a pretty large backup environment with dump(8) being a critical element of it. I just hope the problem will be resolved before 7.1-RELEASE hit the streets. Terry, please file a bug report on this and get in touch with iedowse@ who was implementing the aforementioned patch. Andy Kosela