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Date: Fri, 19 Aug 2011 17:21:47 +0300
From: Andriy Gapon <avg@FreeBSD.org>
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To: Derrick Edwards <dantavious313@gmail.com>
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Cc: "freebsd-current@freebsd.org" <freebsd-current@FreeBSD.org>
Subject: Re: PANICS on 9.0-BETA1
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on 19/08/2011 01:07 Derrick Edwards said the following:
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0xffffbe00a45b6798

This address looks suspiciously like a result of bit flips.

> fault code              = supervisor write data, page not present
> instruction pointer     = 0x20:0xffffffff814f444c
> stack pointer           = 0x28:0xffffff82267fbe90
> frame pointer           = 0x28:0xffffff82267fbea0
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 5889 (csup)
> trap number             = 12
> panic: page fault
> cpuid = 0
> Uptime: 10h9m0s
> Dumping 1823 out of 7912

Do you always get the same stack trace? Or are they always different?
I would double-check the hardware first.

-- 
Andriy Gapon