amd64/146792: flowcleaner 100% cpu's core load

[Nikolay Nevzorov]

>Number:         146792
>Category:       amd64
>Synopsis:       flowcleaner 100% cpu's core load
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri May 21 10:40:02 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Nikolay Nevzorov
>Release:        8-STABLE (apr 10 Arp)
>Organization:
Germes-Telecom
>Environment:
FreeBSD vpn.gtelecom.ru 8.0-STABLE FreeBSD 8.0-STABLE #2: Fri May 14 01:37:04 YEKST 2010     niko at vpn.gtelecom.ru:/usr/obj/usr/src/sys/VPN  amd64
>Description:
On high-load network router since some time (1-5 days) process flowcleaner get's 100% load on a one CPU's core. 
ssh works, remote reboot can't be done, only hard reboot.


Bug was seen at many routers:
http://forum.nag.ru/forum/index.php?showtopic=55485&st=0
>How-To-Repeat:
Bug can be seen only at high-load (more than 30 megabits) routers.
>Fix:
Without "flowtable" option in kernel's config router works fine. 

>Release-Note:
>Audit-Trail:
>Unformatted: