panic: Trying sleep, but thread marked as sleeping prohibited

[Kris Kennaway]

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 at 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