panic: Trying sleep, but thread marked as sleeping prohibited
Robert Watson
rwatson at FreeBSD.org
Wed Sep 12 04:47:59 PDT 2007
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
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