kern/165181: IGB freezes after about 2 weeks of uptime

[Darren Baginski]

>Number:         165181
>Category:       kern
>Synopsis:       IGB freezes after about 2 weeks of uptime
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Feb 15 17:00:20 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Darren Baginski
>Release:        FreeBSD 9.0-RELEASE
>Organization:
None
>Environment:
FreeBSD srv-4-2.lab.local 9.0-RELEASE FreeBSD 9.0-RELEASE #1: Thu Jan 19 18:31:23 UTC 2012     root at srv-4-2.lab.local:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
Hi!

After about 2 weeks of uptime I'm getting messages like that:

igb0: Watchdog timeout -- resetting
igb0: Queue(0) tdh = 16, hw tdt = 20
igb0: TX(0) desc avail = 1020,Next TX to Clean = 16
igb0: link state changed to DOWN
igb0: link state changed to UP

Reboot helps, for the next ~2 weeks.
Kernel is GENERIC.
Card is 4 ports Intel
FreeBSD srv-4-2.lab.local 9.0-RELEASE FreeBSD 9.0-RELEASE #1: Thu Jan 19 18:31:23 UTC 2012     root at srv-4-2.lab.local:/usr/obj/usr/src/sys/GENERIC  amd64
>How-To-Repeat:
Use FreeBSD 9.0-RELEASE with 4 ports IGB for 2+ weeks
>Fix:


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