Intermittent -- yet regular -- v6.3 kernel panic

[Ryan Coleman]

Ryan Coleman wrote:
> Kris Kennaway wrote:
>> Bruce Cran wrote:
>>> On Fri, 13 Jun 2008 14:49:29 -0500
>>> Ryan Coleman <ryan.coleman at cwis.biz> wrote:
>>>
>>>> Jun 12 23:02:41 UnixBox2 kernel: Fatal trap 12: page fault while in 
>>>> kernel mode
>>>> Jun 12 23:02:41 UnixBox2 kernel: cpuid = 1; apic id     = 01
>>>> Jun 12 23:02:41 UnixBox2 kernel: fault virtual address  = 0x0
>>>> Jun 12 23:02:41 UnixBox2 kernel: fault code             = 
>>>> supervisor read, page not present
>>>> Jun 12 23:02:41 UnixBox2 kernel: instruction pointer    = 0x20:0x0
>>>> Jun 12 23:02:41 UnixBox2 kernel: stack pointer          =
>>>> 0x28:0xec0ea8e0 Jun 12 23:02:41 UnixBox2 kernel: frame
>>>> pointer          = 0x28:0xec0ea8e4 Jun 12 23:02:41 UnixBox2 kernel:
>>>> code segment           = base 0x0, limit 0xfffff, type 0x1b
>>>> Jun 12 23:02:41 UnixBox2 kernel: = DPL 0, pres 1, def32 1, gran 1
>>>> Jun 12 23:02:41 UnixBox2 kernel: processor eflags       = interrupt 
>>>> enabled, resume, IOPL = 0
>>>> Jun 12 23:02:41 UnixBox2 kernel: current process        = 925 (cp)
>>>> Jun 12 23:02:41 UnixBox2 kernel: trap number            = 12
>>>> Jun 12 23:02:41 UnixBox2 kernel: panic: page fault
>>>> Jun 12 23:02:41 UnixBox2 kernel: cpuid = 1
>>>> Jun 12 23:02:41 UnixBox2 kernel: Uptime: 1h21m59s
>>>> Jun 12 23:02:41 UnixBox2 kernel: Cannot dump. No dump device defined.
>>>>
>>>>
>>>> This is a regular occurrence, but varies by source. Brand new fBSD
>>>> 6.3 machine, what more information do I need to provide?
>>>
>>> To be of any use we need a backtrace.  See 
>>> http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html 
>>>
>>> for details.  First you need to configure a dump device then when
>>> the system crashes a crash dump will be written to /var/crash by
>>> default.  You then run kgdb on the file to get the backtrace.
>>>
>>
>> It's quite likely to be due to bad hardware though.
>>
>> Kris
>>
>
> It's crashed twice and stalled on the dump. Any thoughts?

Anyone? I'm going to have to disable the dump as I need the machine to 
come back up if possible.