kern/116185: if_iwi driver leads system to reboot

[Rechistov Grigory]

>Number:         116185
>Category:       kern
>Synopsis:       if_iwi driver leads system to reboot
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Sep 07 20:00:07 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Rechistov Grigory
>Release:        FreeBSD 6.2-STABLE
>Organization:
>Environment:
FreeBSD ip82-180.private.rt.mipt.ru 6.2-STABLE FreeBSD 6.2-STABLE #0: Thu Jun  7 01:06:01 UTC 2007     root at ip82-180.private.rt.mipt.ru:/usr/obj/usr/src/sys/DELL_v8  i386

>Description:
Reloading if_iwi.ko module leads to system automatic reboot without a warning.

I had a wireless connection problem in my ad-hoc network. I thought it could be solved by module reloading on one of the machines. Initially if_iwi.ko was loaded at a boot time (in loader.conf)

The reloading really restored the connection, but 30 seconds later the system simply hung up and rebooted with no warning.
>How-To-Repeat:
Load if_iwi, iwi_bss and other approriate modules in loader.conf

Bring up a wireless network with through Intel PRO/Wireless NIC.

kldunload if_iwi
kldload if_iwi

The system will reboot in a minute.
>Fix:


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