kern/92351: page fault in iwi after ACPI resume

[Ales Krenek]

>Number:         92351
>Category:       kern
>Synopsis:       page fault in iwi after ACPI resume
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jan 26 09:30:06 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Ales Krenek
>Release:        FreeBSD 6.0-STABLE i386
>Organization:
Masaryk University
>Environment:
System: FreeBSD balkis.ics.muni.cz 6.0-STABLE FreeBSD 6.0-STABLE #2: Thu Jan 19 10:32:13 CET 2006 toor at balkis.ics.muni.cz:/usr/src/sys/i386/compile/BALKIS i386

The machine is Fujitsu-Siemens Lifebook S7010 with 

iwi0: <Intel(R) PRO/Wireless 2200BG> mem 0xd0214000-0xd0214fff irq 11 at device 
13.0 on pci1

	
>Description:
After waking up from ACPI S3 suspend, I get a page fault at sort of 10% of attempts to bring iwi interface up.

I always unload if_iwi.ko before suspending (it is far more stable than keeping
it in kernel). After resume I always manage to load the module back and load
firmware with iwicontrol. The page fault happens on bringing the interface
up with ifconfig.

My kernel (build from RELENG_6 branch sources on Jan 19) and the crash dump
can be found at http://www.ics.muni.cz/~ljocha/freebsd/

	
>How-To-Repeat:
	
>Fix:

	


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