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Date: Wed, 02 Mar 2011 21:27:08 +0200
From: Andriy Gapon <avg@freebsd.org>
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To: Robert Schulze <rs@bytecamp.net>
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Cc: freebsd-fs@freebsd.org
Subject: Re: kern/154681: [zfs] [panic] panic with FreeBSD-8 STABLE
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on 02/03/2011 12:10 Robert Schulze said the following:
> The following reply was made to PR kern/154681; it has been noted by GNATS.
> 
> From: Robert Schulze <rs@bytecamp.net>
> To: bug-followup@freebsd.org
> Cc:  
> Subject: Re: kern/154681: [zfs] [panic] panic with FreeBSD-8 STABLE
> Date: Wed, 02 Mar 2011 11:02:07 +0100
> 
>  Hi,
>  
>  bumping that up, the problem still exists with FreeBSD-8.2-STABLE csup'd 
>  and built yesterday. In the debugger, I did a "continue", maybe these 
>  information are valuable:

"bt" command would have been far more useful.
Looks like a NULL pointer problem somewhere.

>  ---
>  Fatal trap 12: page fault while in kernel mode
>  cpuid = 1; apic id = 01
>  fault virtual address	= 0x29
>  fault code		= supervisort read data, page not present
>  instruction pointer	= 0x20:0xffffffff80173330
>  stack pointer		= 0x28:0xffffff80000b6af0
>  frame pointer		= 0x28:0xffffff80000b6b20
>  code segment		= base 0x0, limit 0xfffff, type 0x1b
>  			= DPL 0, pres 1, long 1, def 32 0, gran 1
>  processor eflags	= interrupt enabled, resume, IOPL = 0
>  current process		= 12 (swi2: cambio)
>  [thread pid 12 tid 100024 ]
>  Stopped at camisr_runqueue+0x6e: cmpq %rax,0x28(%rdx%)
>  ---
>  
>  I may provider further debugging information if I get a hint which 
>  information and how to do so.

-- 
Andriy Gapon