Current kernel Fatal Trap 12
Robert Watson
rwatson at freebsd.org
Fri Jun 20 09:21:11 PDT 2003
If you have a version of the kernel in question on disk and with debugging
symbols, could you attach gdb -k to it and send us the results of:
l *0xc01f6212
That will provide a bit more information about where the panic is
occuring. This is likely a NULL pointer dereference.
Robert N M Watson FreeBSD Core Team, TrustedBSD Projects
robert at fledge.watson.org Network Associates Laboratories
On Fri, 20 Jun 2003, Manfred Antar wrote:
> For the past week i have not been able to boot with current kernel.
> The last kernel that works is from Sat June 14th.
> When I build and try and boot a current kernel I get:
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x38
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc01f6212
> stack pointer = 0x10:0xc04b1e24
> frame pointer = 0x10:0xc04b1e24
> 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 = 0 (swapper)
> trap number = 12
> panic: page fault
> Uptime: 1s
>
>
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x38
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc01f6212
> stack pointer = 0x10:0xc04b1cec
> frame pointer = 0x10:0xc04b1cec
> 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 = 0 (swapper)
> trap number = 12
> panic: page fault
> Uptime: 1s
>
> This continues to scroll by many times and I can't get to the debugger.
> The machine is i386 SMP dual pentium-pro overdrive processors.
> Same thing happens with kernel configured as UNIprocessor.
>
>
>
>
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