I found thread
https://forum.pfsense.org/index.php?topic=87541.60
...and posted there but it's old and references 2.1.x and 2.2.x versions.  
After upgrading from 2.2.6 to 2.3.1_5 we get a long spew of this logged during 
a Limiter-limited rsync each night (it also shows on the console screen):

Jul 8 02:47:36  kernel          defer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred state

Jul 8 02:47:36  kernel          _undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_und
 efer_state: unable to find deferred statepf

Jul 8 02:47:36  kernel          ync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_undefer_state: unable to find deferred statepfsync_undefer_state: 
unable to find deferred statepfsync_undefer_state: unable to find deferred 
statepfsync_
 undefer_state: unable to find deferred stat


It continues while traffic that triggers the limiter rule is in effect and ends 
immediately upon traffic's end.

The Limiter set up is only using Firewall\Traffic Shaper\Limiters:
LimitBackupUpLAN
        50Mbit/s        Overnight [Mon - Sun / 0:00-6:45]
        15Mbit/s        Day
LimitBackupUpLAN
        50Mbit/s        Overnight
        15Mbit/s        Day

The limiter is on a rule on the LAN interface, with "In / Out pipe" set.  It 
only matches to one IP.  Neither checking "No pfSync" nor setting "State type" 
to None seem to have any effect.  I think that's the equivalent of what they 
mentioned in the forum thread... 'unchek  the flag "State Type" to "NO pfsync".'

I can duplicate this at will...in this case an "rsync --dry-run" is plenty.

It doesn't seem to have any effect on traffic since the copy works fine, it 
appears to just be a logging issue.

--

Steve Yates
ITS, Inc.

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