amd64/158873: When I launch pf daemon, I have a kernel panic

[Alvaro]

>Number:         158873
>Category:       amd64
>Synopsis:       When I launch pf daemon, I have a kernel panic
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jul 13 16:50:10 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Alvaro
>Release:        None, I'm using FreeBSD 9.0-CURRENT
>Organization:
none
>Environment:
FreeBSD shuttle0.lan 9.0-CURRENT FreeBSD 9.0-CURRENT #1: Wed Jul 13 07:03:25 WEST 2011     netSys at shuttle0.lan:/usr/obj/usr/src/sys/HUBBLE  amd64
>Description:
When I launch pf daemon, I have a kernel panic.
Boot with it (/etc/rc.conf) or manually (# /etc/rc.d/pf start)

Note: The world as kernel was compiled and instaled today.


>How-To-Repeat:
# /etc/rc.d/pf start
Starting pf...
panic: mutex pf task mtx owned at /usr/src/sys/contrib/pf/net/if_pfsync.c:3163
cpuid = 0
KDB: enter: panic
[ thread pid 1853 tid 100066 ]
Stopped at Kdb_enter+0x3b: movq $0,0x60e442 (%rip)

------------------------------------Using db---------------------------------
db > examine
Kdb_enter+0x3b: 4205c748
-----------------------------------------------
db > print
ffffffff80522ddb
-----------------------------------------------
db > match
After 4 instructions ( 0 loads, 0 stones )
Stopped at Kdb_enter+0x4c: net
-----------------------------------------------
db > countfreebuf
Counted 51320 free, 47 used (51367 tot)
numfreebuffer is 51320
-----------------------------------------------
db > next
After 889 instructions (0 loads 0 stones)
[ thread pid 0 tid 100048 ]
Stopped at spinlock_exit+0x39: net
-----------------------------------------------
db > trace
Tracing pid 0 tid 100048 td 0xfffffe 0002604460
spinlock_exit() at spinlock_exit+0x39
taskqueue_thread_loop() at taskqueue_thread_loop+0x5f
fork_exit() at fork_exit+0x135
fork_trampoline() at fork_trampoline+0xe
---trap0, rip = 0, rsp = 0xffffff8221da0d00, vbp = 0---
------------------------------------------------
db > until
[ thread pid 0 tid 100048 ]
Stopped at msleep_spin+0x183: call_mtx_assent
------------------------------------------------
db > step
[ thread pid 0 tid 100048 ]
Stopped at msleep_spin+0x209_ jmp msleep_spin+0x151

>Fix:


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