Re: Fatal trap on RELENG_5_1 SMP

Could you build your kernel with options DDB and debugging symbols, and
when the kernel drops to the debugger on this panic, copy and past the
stack trace into an e-mail?  Alternatively, or perhaps as well, extract
the information with a core.  There are some excellent instructions on
generating some comprehensive crash reports here:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html

This looks like it's a NULL pointer dereference, so the question we need
to answer is: which pointer?  To do that, we'll need to turn that back
into a C line number, which will need the kernel with debugging symbols.

Thanks!

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert_at_fledge.watson.org      Network Associates Laboratories

On Sun, 1 Jun 2003, Magnus J wrote:

> Hello everyone
> 
> 
> I'm getting a fatal trap when I do 'shutdown' on an SMP-box that
> I did cvsup on RELENG_5_1 yesterday.
> 'reboot' works without any problems.
> 
> This is the message:
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid=1; lapic.id = 01000000
> fault virtual address   = 0x0
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xe0197d11
> stack pointer           = 0x10:0xe0197cec
> frame pointer           = 0x10:0x8
> 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         = 11 (idle: cpu1)
> trap number             = 12
> panic: page fault
> cpuid=1; lapic.id = 01000000
> boot() called on cpu#1
> 
> 
> The machine is a 2x933 MHz PIII, Mainboard is Tyan Tiger 230,
> 1.5 GB RAM.
> 
> If you need more details, please let me know.
> I'm not a member of this mailing list.
> 
> Regards
> Magnus
> 
> 
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