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Date: Fri, 13 Feb 2004 05:10:28 -0500 (EST)
From: Andre Guibert de Bruet <andy@siliconlandmark.com>
To: Divacky Roman <xdivac02@stud.fit.vutbr.cz>
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cc: current@freebsd.org
Subject: Re: panic in 11th Feb current
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On Fri, 13 Feb 2004, Divacky Roman wrote:

> Fatal double fault:
> eip = 0xc05babdc
> esp = 0xc7f10ff4
> ebp = 0xc7f11004
> panic: double fault
> at line 848 in file /usr/src/sys/i386/i386/trap.c
>
> that instruction was xchgl %ebx,in_Debugger
>
> then it switched to kernel debugger - I issued c (continue)
> than it paniced again
>
> in vm_map.c:2870

Source from the 11th indicates that this line number to points to a
vm_map_lock_read() call inside vm_map_lookup() which would be called on a
page fault.

> stray iqr 9
> _mtx_lock_sleep: recursed on non-recursive mutex
> kern_mutex.c:436

Ouch.

> I have kernel dump which I can provide (but my kernel is not -g
> compiled)

Run an "nm /boot/kernel/kernel |sort" and report the function names and
addresses of the functions just above and below the eip (0xc05babdc).

Regards,

> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/    >