From owner-freebsd-questions@FreeBSD.ORG Fri Jan 5 04:16:22 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9295A16A403 for ; Fri, 5 Jan 2007 04:16:22 +0000 (UTC) (envelope-from skeptikos@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.190]) by mx1.freebsd.org (Postfix) with ESMTP id 0AE7A13C442 for ; Fri, 5 Jan 2007 04:16:21 +0000 (UTC) (envelope-from skeptikos@gmail.com) Received: by nf-out-0910.google.com with SMTP id x37so7707456nfc for ; Thu, 04 Jan 2007 20:16:21 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:mime-version:content-type; b=M2CBIgpYQeXGFkHOP3kWoCx74vdfb/s3Bw0C9lXK2JcIOa4sUW9heFiAHpMYYvXMHglkY9aGDY2LH0jao0gUnuapb5pnxRudlC2Sk+K5va2sGT3DBSvUcrTYCLRw/8APSnRi4RKudUoJ1jBWUxDSSUrdI5qZOnZtID3i+TmPx8Y= Received: by 10.49.15.16 with SMTP id s16mr3096468nfi.1167968837116; Thu, 04 Jan 2007 19:47:17 -0800 (PST) Received: by 10.49.32.20 with HTTP; Thu, 4 Jan 2007 19:47:17 -0800 (PST) Message-ID: Date: Thu, 4 Jan 2007 20:47:17 -0700 From: "christopher floess" To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: fatal trap 12, can't get core 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: Fri, 05 Jan 2007 04:16:22 -0000 Hi, I'm running 5.4 with a modified GENERIC kernel, and I recently rebooted my system to find out that it hangs on probing ad1 with a fatal trap 12. Here's the entire error message ad1 Timeout - Read_dma retrying (2 retries left) LBA 117231345 kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x6c fault code = supervisor read, page not present instruction pointer = 0x8:0xc063fb59 stack pointer = 0x10:0xde0fac40 frame pointer = 0x10:0xde0fac44 code segment = base 0x0, limit 0xfffff, type ox1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = 6(thread taskq) trap number = 12 panic: page fault cannot dump. no dump device In my rc.conf I've got dumpdev="/dev/ad0s1b" dumpdir="/usr/crash" For some reason it still says "no dump device". Right now I'm able to boot my system into safe mode, but not single user or normal. I think I might not be able to get core dumps b/c my system doesn't get far enough in the boot process, so I'm trying to follow the directions here http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/advanced.html#KERNEL-PANIC-TROUBLESHOOTING but I'm not sure about this part of the instructions % nm -n /kernel.that.caused.the.panic | grep f0xxxxxx Do I need to replace "/kernel.that.caused.the.panic" with /boot/kernel/kernel? If so, here' is the out put of > nm -n /boot/kernel/kernel | grep c063fb59 c063fb3c t init_turnstile0 c063fb4c t turnstile_setowner c063fb78 T turnstile_alloc c063fbb0 T turnstile_free c063fbc4 T turnstile_lookup Can someone help me out here? Am I going about it all wrong? Let me know what other info might be needed. Thanks ~ Chris --