kernel trap 12 with interrupts disabled [bge0 on 7.2R]

[John Baldwin]

On Thursday 14 May 2009 1:10:26 pm Martin wrote:
> Am Thu, 14 May 2009 09:16:40 -0400
> schrieb John Baldwin <jhb at freebsd.org>:
> 
> > On Thursday 14 May 2009 7:47:23 am Martin Sugioarto wrote:
> > [...]
> > > kernel trap 12 with interrupts disabled
> > > 
> > > 
> > > Fatal trap 12: page fault while in kernel mode
> > > cpuid = 0; apic id = 0
> > > fault virtual address = 0x80000000000
> > 
> > Given that that is a single bit set, it could possibly be due to bad
> > RAM.
> 
> This is the second panic output that appeared on the screen. I could not 
read
> the first lines of the first panic. The last ones looked similar
> (same trap/process etc).
> 
> > Does your kernel have debug symbols?
> 
> This is GENERIC kernel configuration. The kernel was totally frozen. I could
> not type anything. I just noticed, I've got a vmcore.0 of the crash.
> 
> I can see some other panic output when loading the kernel in kgdb:
> 
> Unread portion of the kernel message buffer:
> 
> 
> Fatal trap 9: general protection fault while in kernel mode

When I have seen this, it has often been due to a hardware failure such as bad 
RAM.

> cpuid = 2; apic id = 02
> instruction pointer	= 0x8:0xffffffff805bbc66

Can you do 'x/i 0xffffffff805bbc66'?  Also, can you walk up the stack to the 
frame for this panic ('frame 7') and do 'info registers'?

-- 
John Baldwin