kern/183970: mellenox drivers and vlan usage causes kernel panic and reboot

[John Jasen]

>Number:         183970
>Category:       kern
>Synopsis:       mellenox drivers and vlan usage causes kernel panic and reboot
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Nov 14 19:50:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     John Jasen
>Release:        9.2
>Organization:
>Environment:
FreeBSD fbsd-xge1 9.2-RELEASE FreeBSD 9.2-RELEASE #2: Thu Nov 14 11:09:49 EST 2013     root at fbsd-xge1:/usr/obj/usr/src/sys/FBSDFW  amd64
>Description:
additions to GENERIC kernel config:
<snip>
options         OFED
options         SDP
options         IPOIB_CM

device          ipoib
device          mlx4ib
device          mlxen
device          mthca
<snip>

Upon boot, when running:

ifconfig {igb0,ix0}.$vlanID create

the system kernel panics and reboots. References to vlan and mlx drivers are included in the output.

Recompiling without the above options, rebooting, and running an ifconfig vlan create does NOT crash the kernel.

>How-To-Repeat:
enable OFED drivers, per:

https://wiki.freebsd.org/InfiniBand

reboot

as root, run ifconfig ix0.22 create
<<panic>>



>Fix:
perhaps reference bug kern/181931?



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