Date: Wed, 19 May 2004 16:34:42 +0300 From: Nick Strebkov <nick@humgat.org> To: hackers@freebsd.org Subject: obtaining a kernel crash dump Message-ID: <20040519133442.GA90053@nord.interexc.com>
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Hi there. I can't obtain a crash dump. % cat /sys/i386/conf/DEVEL | grep makeoptions makeoptions DEBUG=-g % cat /etc/rc.conf| grep dump dumpdev="/dev/ar0s1b" dumpdir="/var/crash" I'm testing my kernel patch and the following is what I see in /var/log/messages: May 19 16:17:00 devel /kernel: Fatal trap 12: page fault while in kernel mode May 19 16:17:00 devel /kernel: fault virtual address = 0x20a4e920 May 19 16:17:00 devel /kernel: fault code = supervisor write, page not present May 19 16:17:00 devel /kernel: instruction pointer = 0x8:0xc01920d3 May 19 16:17:00 devel /kernel: stack pointer = 0x10:0xe7951e80 May 19 16:17:00 devel /kernel: frame pointer = 0x10:0xe7951ea4 May 19 16:17:00 devel /kernel: code segment = base 0x0, limit 0xfffff, type 0x1b May 19 16:17:00 devel /kernel: = DPL 0, pres 1, def32 1, gran 1 May 19 16:17:00 devel /kernel: processor eflags = interrupt enabled, resume, IOPL = 0 May 19 16:17:00 devel /kernel: current process = 637 (rtpslave) May 19 16:17:00 devel /kernel: interrupt mask = net May 19 16:17:00 devel /kernel: trap number = 12 May 19 16:17:00 devel /kernel: panic: page fault May 19 16:17:00 devel /kernel: May 19 16:17:00 devel /kernel: syncing disks... 60 3 2 [dd boot kernel messages] May 19 16:17:00 devel savecore: no core dump Thanks in advance. -- Nick Strebkov Public key: http://humgat.org/~nick/pubkey.txt fpr: 552C 88D6 895B 6E64 F277 D367 8A70 8132 47F5 C1B6
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