Machine unresponsive with cache_lock: blocked on... message
Matthew Dillon
dillon at apollo.backplane.com
Thu Mar 4 16:11:27 PST 2010
:I just got a new crash.
:
:The system was running DragonFly v2.5.1.902.g333f4-DEVELOPMENT from the 25th.
:
:There were these messages on the console:
:
:Warning: pmap_interlock 00010003
:Warning: pmap_interlock 00010003
:
:No cache_lock stuff this time.
It looks like a deadlock between the VM system and HAMMER due to
kmalloc() blocking during a low memory situation. Your system
was paging heavily at the time and was low on free memory.
I have committed a change to master which should fix this particular
issue.
-Matt
Matthew Dillon
<dillon at backplane.com>
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