From owner-freebsd-questions@FreeBSD.ORG Sat Feb 11 19:32:14 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2AEE7106566B for ; Sat, 11 Feb 2012 19:32:14 +0000 (UTC) (envelope-from bblister@gmail.com) Received: from bigb5.homeftp.net (k2-pc243.koz.uowm.gr [83.212.19.243]) by mx1.freebsd.org (Postfix) with ESMTP id 73EE28FC0A for ; Sat, 11 Feb 2012 19:32:12 +0000 (UTC) Received: from bigb5.homeftp.net (localhost [127.0.0.1]) by bigb5.homeftp.net (8.14.4/8.14.4) with ESMTP id q1BJW9jF061115 for ; Sat, 11 Feb 2012 21:32:10 +0200 (EET) (envelope-from bblister@gmail.com) X-DKIM: Sendmail DKIM Filter v2.8.3 bigb5.homeftp.net q1BJW9jF061115 Authentication-Results: bigb5.homeftp.net; dkim=none (no signature) header.i=unknown; x-dkim-adsp=none Received: (from root@localhost) by bigb5.homeftp.net (8.14.4/8.14.4/Submit) id q1BJW46G061111 for freebsd-questions@freebsd.org; Sat, 11 Feb 2012 21:32:04 +0200 (EET) (envelope-from bblister@gmail.com) Date: Sat, 11 Feb 2012 21:32:04 +0200 From: BBLister To: freebsd-questions@freebsd.org Message-ID: <20120211193204.GA49922@bigb5.homeftp.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.3i X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.6 (bigb5.homeftp.net [127.0.0.1]); Sat, 11 Feb 2012 21:32:10 +0200 (EET) X-Virus-Scanned: clamav-milter 0.97 at bigb5.homeftp.net X-Virus-Status: Clean X-Spam-Status: No, score=0.2 required=4.5 tests=ALL_TRUSTED, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on bigb5.homeftp.net Subject: Question about kernel panic X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 11 Feb 2012 19:32:14 -0000 Greetings, A server of mine kernel panicked and in the serial console it prints non stop these messages which are repeated again and again.. KDB: stack backtrace: #0 0xffffffff802fec5e at kdb_backtrace+0x5e #1 0xffffffff80287e57 at hardclock+0x117 #2 0xffffffff804610a2 at lapic_handle_timer+0xd2 #3 0xffffffff8045b22d at Xtimerint+0x8d #4 0xffffffff802e07d5 at softclock+0x305 #5 0xffffffff802a4bc4 at intr_event_execute_handlers+0x104 #6 0xffffffff802a6255 at ithread_loop+0x95 #7 0xffffffff802a1f4f at fork_exit+0x11f #8 0xffffffff8045ab9e at fork_trampoline+0xe interrupt total irq1: atkbd0 1 irq4: uart0 7376 irq14: ata0 1 irq18: atapci2 1237165 irq20: em0 86529 cpu0: timer 232803254 cpu1: timer 248008646 cpu2: timer 248008707 cpu3: timer 248008856 Total 978160831 KDB: stack backtrace: The server is: 8.2-STABLE FreeBSD 8.2-STABLE #1: Mon Jan 16 15:54:50 CPU: Intel(R) Xeon(TM) CPU 3.40GHz (3391.52-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0xf4a Family = f Model = 4 Stepping = 10 Features=0xbfebfbff Features2=0x649d AMD Features=0x20100800 AMD Features2=0x1 TSC: P-state invariant real memory = 8589934592 (8192 MB) avail memory = 8243830784 (7861 MB) This machine will be rebooted on Monday, so from the time being I can only watch these messages repeated again and again. This server is mainly used for virtualization (virtualbox) and has ZFS, on a Sil 3112 and Intel 6300ESB SATA150 Controllers. I think that either the Sil controller or memory exhaustion due to ZFS and virtualbox has occured. How can I figure out what has really happened? Can I issue any command from the serial console? Thank you