kern/121322: 'panic: spin lock held too long' on reboot

[Lars Stokholm]

>Number:         121322
>Category:       kern
>Synopsis:       'panic: spin lock held too long' on reboot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 03 16:00:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Lars Stokholm
>Release:        FreeBSD 7-STABLE
>Organization:
>Environment:
FreeBSD stokholm 7.0-STABLE FreeBSD 7.0-STABLE #2: Sun Mar  2 20:47:23 CET 2008     lars at stokholm:/usr/obj/usr/src/sys/STOKHOLM  i386
>Description:
After I enabled my processor's hyper threading capability, I'm beginning to get this, sometimes when I reboot:

Rebooting...
cpu_reset: Stopping other CPUs
spin lock 0xc0c1ea40 (sched lock 0) held by 0xc2d9ecc0 (tid 100001) too long
panic: spin lock held too long
cpuid = 0

Needless to say, after which I have to cut the power manually.

My processor is a Pentium 4 with hyper threading.

Here's my kernel config:
include         GENERIC
ident           STOKHOLM
nooptions       SCHED_4BSD
options         SCHED_ULE
device          snd_ich
device          speaker
device          sound
>How-To-Repeat:

>Fix:


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