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Date: Wed, 12 Sep 2007 21:08:07 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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To: Robert Watson <rwatson@FreeBSD.org>
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Cc: re@FreeBSD.org, FreeBSD-current@FreeBSD.org,
	Mario Sergio Fujikawa Ferreira <lioux-list@uol.com.br>
Subject: Re: panic: Trying sleep, but thread marked as sleeping prohibited
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Robert Watson wrote:
> 
> On Wed, 12 Sep 2007, Kris Kennaway wrote:
> 
>> Mario Sergio Fujikawa Ferreira wrote:
>>>     I had 3 panics today. All seem to be related to ipf code. I have 
>>> disabled ipf for the time being.
>>>
>>>     I am attaching the kgdb backtraces. I am saving the cores. Let me 
>>> know if there is anything I can do to help.
>>>
>>> FreeBSD exxodus.home.home 7.0-CURRENT FreeBSD 7.0-CURRENT #2: Mon Sep 
>>> 10 15:01:49 BRT 2007 
>>> root@exxodus.home.home:/usr/obj/usr/src/sys/LIOUX i386
>>>
>>>     -current as of Sep 10 2007.
>>
>> Yes, known issue.  The lack of response by the ipf maintainer so far 
>> suggests it probably will not be fixed in 7.0.  This should be 
>> documented in the relnotes.
> 
> The quick, and probably correct, fix is to replace all use of sx(9) with 
> rw(9) in ipf.  There might be places where a copying/copyout is being 
> performed with the lock held, in which case this will trigger new warnings.
> 
> Robert N M Watson
> Computer Laboratory
> University of Cambridge
> 
> 

Worth a shot I guess.

Kris