freebsd stable - Mar 2017 - Kernel panic on production system - what now?

Hi all,

Mar 24 02:39:36 ph001 kernel: kernel trap 12 with interrupts disabled
Mar 24 02:39:36 ph001 kernel: 
Mar 24 02:39:36 ph001 kernel: 
Mar 24 02:39:36 ph001 kernel: Fatal trap 12: page fault while in kernel mode
Mar 24 02:39:37 ph001 kernel: cpuid = 8; apic id = 08
Mar 24 02:39:37 ph001 kernel: fault virtual address	= 0x0
Mar 24 02:39:37 ph001 kernel: fault code		= supervisor read data, page not
present
Mar 24 02:39:37 ph001 kernel: instruction pointer	= 0x20:0xffffffff809a4330

I must admit that this is a "first" for me. So where do I go from
here?
There is "stuff" in /var/crash that has got the right timestamps, it
seems ...

Thanks,
Patrick
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On 03/24/2017 03:28, Patrick M. Hausen wrote:
> Hi all,
> 
> Mar 24 02:39:36 ph001 kernel: kernel trap 12 with interrupts disabled
> Mar 24 02:39:36 ph001 kernel: 
> Mar 24 02:39:36 ph001 kernel: 
> Mar 24 02:39:36 ph001 kernel: Fatal trap 12: page fault while in kernel
mode
> Mar 24 02:39:37 ph001 kernel: cpuid = 8; apic id = 08
> Mar 24 02:39:37 ph001 kernel: fault virtual address	= 0x0
> Mar 24 02:39:37 ph001 kernel: fault code		= supervisor read data, page not
present
> Mar 24 02:39:37 ph001 kernel: instruction pointer	= 0x20:0xffffffff809a4330
> 
> I must admit that this is a "first" for me. So where do I go from
here?
> There is "stuff" in /var/crash that has got the right timestamps,
it seems ...
Start with:

	# pkg install gdb
	# kgdb712 /boot/kernel/kernel /var/crash/vmcore.0

The "712" above is the GDB version number, so it might be different on
your
system.  In GDB:

	(gdb) bt full

Post that output to this list, along with "uname -a".

Eric