kern/46291: 6.0_BETA kernel crash: intr_biglock_wrapper -> fxp_intr

[cheusov%tut.by@localhost]

>Number:         46291
>Category:       kern
>Synopsis:       6.0_BETA kernel crash: intr_biglock_wrapper -> fxp_intr
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 03 17:35:02 +0000 2012
>Originator:     Aleksey Cheusov
>Release:        NetBSD 6.0_BETA
>Organization:
>Environment:
System: NetBSD work.imb.invention.com 6.0_BETA NetBSD 6.0_BETA (GENERIC) #5: 
Fri Mar 30 13:24:57 FET 2012 
cheusov%work.imb.invention.com@localhost:/srv/obj-current/sys/arch/i386/compile/GENERIC
 i386
Architecture: i386
Machine: i386
>Description:
My system crashed immediately after reboot(8).
Stacktrace is below.

#0  0xc05c5be8 in maybe_dump (howto=260) at 
/srv/src_netbsd6/sys/arch/i386/i386/machdep.c:878
#1  cpu_reboot (howto=260, bootstr=0x0) at 
/srv/src_netbsd6/sys/arch/i386/i386/machdep.c:899
#2  0xc07c320a in vpanic (fmt=0xc0c217c3 "trap", ap=0xda920dc4 "garbagehere") 
at /srv/src_netbsd6/sys/kern/subr_prf.c:308
#3  0xc07c32af in panic (fmt=0xc0c217c3 "trap") at 
/srv/src_netbsd6/sys/kern/subr_prf.c:205
#4  0xc081fe60 in trap (frame=0xda920e64) at 
/srv/src_netbsd6/sys/arch/i386/i386/trap.c:396
#5  0xc010d08f in ?? ()
#6  0xc037317d in fxp_intr (arg=0xc3776000) at 
/srv/src_netbsd6/sys/dev/ic/i82557.c:1123
#7  0xc04d2740 in intr_biglock_wrapper (vp=0xc34ffb60) at 
/srv/src_netbsd6/sys/arch/x86/x86/intr.c:605
#8  0xc0107af5 in ?? ()
>How-To-Repeat:
I saw such crash only once.

>Fix:

Unknown