kern/38124: yet another panic in -current

[kefren%ngnetworks.ro@localhost]

>Number:         38124
>Category:       kern
>Synopsis:       vfs_busy panic
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 29 13:40:00 +0000 2008
>Originator:     Mihai Chelaru
>Release:        NetBSD 4.99.54
>Organization:
        
>Environment:
        
        
System: NetBSD kemobile.girsa.ro 4.99.54 NetBSD 4.99.54 (Kefren) #2: Wed Feb 27 
23:39:30 EET 2008 
kefren%kemobile.girsa.ro@localhost:/usr/work/src/sys/arch/i386/compile/obj/Kefren
 i386
Architecture: i386
Machine: i386
>Description:
        
        ls in a wip/fuse-smbfs mounted directory leads to:

#0  0xc046cff2 in cpu_reboot (howto=256, bootstr=0x0) at 
/usr/work/src/sys/arch/i386/i386/machdep.c:952
#1  0xc03d80fa in panic (fmt=0xc067771c "trap") at 
/usr/work/src/sys/kern/subr_prf.c:260
#2  0xc0471123 in trap (frame=0xcbbaca64) at 
/usr/work/src/sys/arch/i386/i386/trap.c:372
#3  0xc01030c8 in calltrap ()
#4  0xc040bfd0 in vfs_busy (mp=0xcba873c0, op=RW_READER, interlock=0x0) at 
/usr/work/src/sys/kern/vfs_subr.c:321
#5  0xc040931e in lookup (ndp=0xcbbacc78) at 
/usr/work/src/sys/kern/vfs_lookup.c:779
#6  0xc040996d in namei (ndp=0xcbbacc78) at 
/usr/work/src/sys/kern/vfs_lookup.c:332
#7  0xc0415cc8 in vn_open (ndp=0xcbbacc78, fmode=5, cmode=2472) at 
/usr/work/src/sys/kern/vfs_vnops.c:126
#8  0xc0412361 in sys_open (l=0xccb53ba0, uap=0xcbbacd00, retval=0xcbbacd28) at 
/usr/work/src/sys/kern/vfs_syscalls.c:1310
#9  0xc0470b21 in syscall (frame=0xcbbacd48) at 
/usr/work/src/sys/arch/i386/i386/syscall.c:114
#10 0xc010053d in syscall1 ()

>How-To-Repeat:
        
>Fix:
        

>Unformatted: