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Date:      Fri, 13 Sep 2002 13:19:48 -0400 (EDT)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Martin Blapp <mb@imp.ch>
Cc:        current@FreeBSD.org
Subject:   Re: kernel trap 12, pagefault (another one)
Message-ID:  <XFMail.20020913131948.jhb@FreeBSD.org>
In-Reply-To: <20020913181544.L3162-100000@levais.imp.ch>

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On 13-Sep-2002 Martin Blapp wrote:
> 
> Just got another one :-(
> 
> I've turned off ATA write cache and ATA DMA now. Seems to help a bit,
> but in half a hour I had it crashing again.
> 
> Dammnit. What's going on here :-(((
> 
> And what I really really hate is that a normal buildworld
> doesn't trigger it. Just a openoffice build. F***.
> 
> panic: bwrite: buffer is not busy???
> panic messages:
> ---
> Fatal trap 12: page fault while in kernel mode
> fault virtual address   = 0x2000018
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xc0337a39
> stack pointer           = 0x10:0xe925c740
> frame pointer           = 0x10:0xe925c750
> 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         = 91399 (perl)
> trap number             = 12
> panic: page fault

Same exact panic.  Can you do 'l *0xc0337a39' in gdb on your kernel.debug?

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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