Re: kernel panic

[Peter Avalos <pavalos@xxxxxxxxxxxx>]

On Tue, May 31, 2005 at 03:16:57PM -0700, Matthew Dillon wrote:
> :Today I updated to the latest HEAD, and I'm getting some kernel panics.
> :Unfortunately, the machine hangs when dumping core, but here's a copy/
> :paste of the panic message:
> :
> :Fatal trap 12: page fault while in kernel mode
> :mp_lock = 00000000; cpuid = 0; lapic.id = 00000000
> :fault virtual address	= 0x544f4c7a
> :fault code		= supervisor read, page not present
> :instruction pointer	= 0x8:0xc018ff31
> :stack pointer		= 0x10:0xde0bd8f8
> :frame pointer		= 0x10:0xde0bd908
> :code segment		= base 0x0, limit 0xfffff, type 0x1b
> :			= DPL 0, pres 1, def32 1, gran 1
> :processor eflags	= interrupt enabled, resume, IOPL = 0
> :current process		= 848 (python)
> :current thread		= pri 70 (CRIT)
> :interrupt mask		= bio  <- SMP: XXX
> :trap number		= 12
> :panic: page fault
> :mp_lock = 00000000; cpuid = 0; lapic.id = 00000000
> :boot() called on cpu#0
> :Uptime: 11m29s
> :
> :dumping to dev #da/0x20001, offset 378927
> 
>     Peter, could you do me a favor and cause the panic to occur
>     again?  This time with the debug.trace_on_panic sysctl turned on.
> 
> 						-Matt

So I'm running a UP kernel right now, and so far so good.  I couldn't
reliably cause the panic...It just happened after awhile.  Sometimes
it happened after a few minutes up being up, sometimes hours.  I'm not
going to be able to try the SMP kernel again for a couple days since
I'm going somewhere today.  When I return, I should hopefully have
some time for it.

Thanks,
Peter

The kernel can be downloaded here:

http://www.theshell.com/~pavalos/kernel.debug

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