Re: Don't know what I was doing but...

From: Randall Stewart <rrs_at_cisco.com>
Date: Sun, 10 Jun 2007 12:01:34 -0400
Attilio Rao wrote:
> Attilio Rao wrote:
> 
>> Randall Stewart wrote:
>>
>>> Hi all:
>>>
>>> I have a fairly recent current.. like yesterday I think.. and
>>> I just saw this tumble out (I usually run with witness and invariants
>>> on in my laptop now :-D)
>>>
>>> lock order reversal:
>>>  1st 0xc0b79f70 sched lock (sched lock) _at_ kern/sched_4bsd.c:846
>>>  2nd 0xc0bec658 descriptor tables (descriptor tables) _at_ 
>>> i386/i386/sys_machdep.c:363
>>
>>
>> Mm, since dt_lock is a leaf mutex, the opposite case seems quite 
>> impossible, so I expect this would be the result of some other bug... 
>> if  next cvsup doesn't fix it, just let me know and I will look into 
>> this.
> 
> 
> More precisely, I'd like to better study effects recent thread_lock 
> introduction had on witness rules.
> 
> Attilio
> 
I did a sup this AM... I will re-do that then cvs update and
build...

R

-- 
Randall Stewart
NSSTG - Cisco Systems Inc.
803-345-0369 <or> 803-317-4952 (cell)
Received on Sun Jun 10 2007 - 13:59:38 UTC

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