Machine unresponsive with cache_lock: blocked on... message

[Francois Tigeot]

On Sat, Mar 13, 2010 at 06:33:25PM -0800, Matthew Dillon wrote:
> 
> :I got a new one.
> :Same symptoms, many pmap_interlock messages on the console.
> :
> :System has been updated to
> :DragonFly v2.5.1.960.g7a6ce-DEVELOPMENT #9: Thu Mar 11 10:22:12 CET 2010
> :...
> :-- 
> :Francois Tigeot
>     
>     This one revealed a different and very interesting MP race which
>     caused shared<->exclusive deadlock.

Yet an other crash.

Symptoms were the sames as in the previous cases.
 
System has been updated to
DragonFly v2.5.1.982.g5dece-DEVELOPMENT from March 15.
  
Kernel and crash dump are available here:

http://www.wolfpond.org/crash.dfly/

-- 
Francois Tigeot