pf causes freeze of amd64 machine on heavy network load
bkoenig at cs.tu-berlin.de
Sat Aug 6 18:31:00 GMT 2005
Max Laier wrote:
> From pf.conf(5):
> Due to a lock order reversal (LOR) with the socket layer, the use of the
> group and user filter parameter in conjuction with a Giant-free netstack
> can result in a deadlock. If you have to use group or user you must set
> debug.mpsafenet to ``0'' from the loader(8), for the moment. This work-
> around will still produce the LOR, but Giant will protect from the dead-
> I am afraid this is what bites you.
Many thanks for this hint. The impact on performance with
debug.mpsafenet=0 is not very important to me.
Björn König (bkoenig at cs.tu-berlin.de)
student at the Technische Universität Berlin
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