panic: unmount: dangling vnode

After rebooting from previous panic, I had this panic during vinum
starting.  I can continue booting after removing "vinum_start=YES"
from /etc/rc.conf.

Greg, is there what I can help for this?


-----
panic: unmount: dangling vnode
cpuid = 0;
KDB: enter: panic
[thread 100102]
Stopped at      kdb_enter+0x2b: nop
db> trace
kdb_enter(c0677962) at kdb_enter+0x2b
panic(c067f68a,c398cc05,e4e7d9e8,c053a62b,c38fa000) at panic+0x131
vfs_mount_destroy(c38fa000,c3968420) at vfs_mount_destroy+0x1d
getdiskbyname(c398cc00,e4e7da14,c050abcd,61,c398cc00) at getdiskbyname+0x173
open_drive(c398cc00,c3968420,0,c07c3247,c398cc00) at open_drive+0x21
init_drive(c398cc00,0,61,1,c398cc00) at init_drive+0x1c
read_drive_label(c398cc00,0,e4e7da74,c,61) at read_drive_label+0x11
check_drive(c393c800,c393c808,408,c07cff26,1) at check_drive+0x4c
vinum_scandisk(c3938380,c393cc00,c39bf528,c38ed700,e4e7db3c) at vinum_scandisk+0x220
vinum_super_ioctl(c38ed700,c400464b,c393cc00,c06d8ba0,1) at vinum_super_ioctl+0x4d0
vinumioctl(c38ed700,c400464b,c393cc00,3,c3968420) at vinumioctl+0x39
spec_ioctl(e4e7db88,e4e7dc34,c0547b23,e4e7db88,c06ccec0) at spec_ioctl+0x152
spec_vnoperate(e4e7db88) at spec_vnoperate+0x13
vn_ioctl(c3975154,c400464b,c393cc00,c3460480,c3968420) at vn_ioctl+0x19f
ioctl(c3968420,e4e7dd14,3,4,296) at ioctl+0x3e0
syscall(2f,2f,2f,0,1) at syscall+0x217
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (54, FreeBSD ELF32, ioctl), eip = 0x28145083, esp = 0xbfbfe52c, ebp = 0xbfbfe958 ---


-- 
Jun Kuriyama <kuriyama_at_imgsrc.co.jp> // IMG SRC, Inc.
             <kuriyama_at_FreeBSD.org> // FreeBSD Project