Bug 200320 - pfSync causes crashes
Summary: pfSync causes crashes
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 10.1-RELEASE
Hardware: Any Any
: --- Affects Many People
Assignee: Ermal Luçi
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-05-19 08:29 UTC by Ermal Luçi
Modified: 2015-07-27 18:35 UTC (History)
2 users (show)

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Description Ermal Luçi 2015-05-19 08:29:36 UTC
Pfsync in FreeBSD 10.0++ causes crashes when trying to synchronize states between two firewalls.
The panic here is reached http://fxr.watson.org/fxr/source/netpfil/pf/if_pfsync.c?v=FREEBSD10#L1779 due to not found defer state after pf(4) itself defered a state.

Reference: https://redmine.pfsense.org/issues/4310

Primary root cause of the crashes seems to be the defer option of pfsync which defers states on pf(4) to be treated by pfsync after.
This is on as default on FreeBSD which should not be since active-active is not supported.