From owner-freebsd-stable@FreeBSD.ORG Tue Dec 12 21:31:04 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id DA8F916A4FE for ; Tue, 12 Dec 2006 21:31:04 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (66-23-211-162.clients.speedfactory.net [66.23.211.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0110B4404B for ; Tue, 12 Dec 2006 21:25:22 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from localhost.corp.yahoo.com (john@localhost [127.0.0.1]) (authenticated bits=0) by server.baldwin.cx (8.13.6/8.13.6) with ESMTP id kBCLQTPb021705; Tue, 12 Dec 2006 16:26:29 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: "Marc G. Fournier" Date: Tue, 12 Dec 2006 16:12:50 -0500 User-Agent: KMail/1.9.1 References: <624054998B7DEF7D446796E1@ganymede.hub.org> <200612111740.23259.jhb@freebsd.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200612121612.50942.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]); Tue, 12 Dec 2006 16:26:29 -0500 (EST) X-Virus-Scanned: ClamAV 0.88.3/2319/Tue Dec 12 15:09:22 2006 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: freebsd-stable@freebsd.org Subject: Re: panic: sleeping thread 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, 12 Dec 2006 21:31:05 -0000 On Tuesday 12 December 2006 15:47, Marc G. Fournier wrote: > > --On Monday, December 11, 2006 17:40:22 -0500 John Baldwin > wrote: > > > Maybe use ssh -e none? You don't need to break into ddb though, when it > > panics it will print out more useful info on its own. > > Ah, like: > > Sleeping thread (tid 101409, pid 78573) owns a non-sleepable lock > sched_switch() at sched_switch+0x11f > mi_switch() at mi_switch+0x14c > sleepq_wait() at sleepq_wait+0x5b > cv_wait() at cv_wait+0xed > _sx_xlock() at _sx_xlock+0x51 > vm_map_lookup() at vm_map_lookup+0x3c > vm_fault() at vm_fault+0xba > trap_pfault() at trap_pfault+0x127 > trap() at trap+0x1bd > calltrap() at calltrap+0x5 > --- trap 0xc, rip = 0xffffffff801f8c91, rsp = 0xffffffffb908a930, rbp = > 0xffffff > ffb908a970 --- > _mtx_trylock() at _mtx_trylock+0x1 > unlock_and_deallocate() at unlock_and_deallocate+0x10e > vm_fault() at vm_fault+0x1ca0 > trap_pfault() at trap_pfault+0x127 > trap() at trap+0x3e6 > calltrap() at calltrap+0x5 > --- trap 0xc, rip = 0x8028d9bf7, rsp = 0x7fffffffe900, rbp = 0x7fffffffe900 --- > panic: sleeping thread > cpuid = 1 Yeah. The LOR is bogus though, it's a secondary effect. The real problem is the fault in _mtx_trylock(), and that's probably due to a bug in the previous frame in unlock_and_deallocate(). If you can get a core dump that would be most helpful. -- John Baldwin