Multiple LORs in -CURRENT

[Olexandr Sydorchuk]

I have something like this but I'm was upgrade from 7-beta4 to current-8(Its only whith debug option). 

dmesg:
[...]
ad2: 76351MB <SAMSUNG SP0812N TK100-30> at ata1-master PIO4
ad3: 38172MB <QUANTUM FIREBALLP AS40.0 A2R.0600> at ata1-slave PIO4
WARNING: WITNESS option enabled, expect reduced performance.
GEOM_LABEL: Label for provider ad2s5 is ntfs/prog.
GEOM_LABEL: Label for provider ad3s1 is ntfs/data.
GEOM_LABEL: Label for provider ad3s5 is msdosfs/ .
lock order reversal: (sleepable after non-sleepable)
 1st 0xc3b7201c struct mount mtx (struct mount mtx) @ /usr/src/sys/kern/vfs_subr.c:343
 2nd 0xc3b72000 vfslock (vfslock) @ /usr/src/sys/kern/vfs_subr.c:370
KDB: stack backtrace:
db_trace_self_wrapper(c0a81f43,c3b72000,c0a87e33,c0a87e33,c0a883d0,...) at db_trace_self_wrapper+0x26
witness_checkorder(c3b72000,1,c0a883d0,172,c3b7201c,...) at witness_checkorder+0x5e5
__lockmgr_args(c3b72000,200100,c3b7201c,0,0,...) at __lockmgr_args+0xd21
vfs_busy(c3b72000,200,0,c3898d20,1,...) at vfs_busy+0xf3
vfs_mount_alloc(0,c0b2c800,c0a88176,c3898d20,c07c1290,...) at vfs_mount_alloc+0x78
vfs_mountroot(c0b89310,4,c0a77314,264,0,...) at vfs_mountroot+0x27e
start_init(0,c3631d38,c0a78cab,30d,c3896d0c,...) at start_init+0x65
fork_exit(c070d540,0,c3631d38) at fork_exit+0xa6
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xc3631d70, ebp = 0 ---
lock order reversal: (sleepable after non-sleepable)
 1st 0xc3a55e10 vnode interlock (vnode interlock) @ /usr/src/sys/fs/devfs/devfs_vnops.c:289
 2nd 0xc3a55df4 devfs (devfs) @ /usr/src/sys/kern/vfs_subr.c:2044
KDB: stack backtrace:
db_trace_self_wrapper(c0a81f43,c3a55df4,c0a72c74,c0a72c74,c0a883d0,...) at db_trace_self_wrapper+0x26
witness_checkorder(c3a55df4,9,c0a883d0,7fc,c3a55df4,...) at witness_checkorder+0x5e5
__lockmgr_args(c3a55df4,80100,c3a55e10,0,0,...) at __lockmgr_args+0x51c
vop_stdlock(c3631b88,c0a7602b,3,80000,c3a55d9c,...) at vop_stdlock+0x54
VOP_LOCK1_APV(c0b2c8e0,c3631b88,c0b6a7a0,c3a55d9c,80100,...) at VOP_LOCK1_APV+0x94
_vn_lock(c3a55d9c,80100,c0a883d0,7fc,c0a72e2a,...) at _vn_lock+0x49
vget(c3a55d9c,80100,c3898d20,122,c3b6f2d4,...) at vget+0x67
devfs_allocv(c3b6de80,c3b72000,c3631c24,c3898d20,c0b366c4,...) at devfs_allocv+0x121
devfs_root(c3b72000,80000,c0bdc574,c3898d20,c0a7b30a,...) at devfs_root+0x51
set_rootvnode(c0bdc560,0,c0a87d35,5f6,c07c1290,...) at set_rootvnode+0x2d
vfs_mountroot(c0b89310,4,c0a77314,264,0,...) at vfs_mountroot+0x340
start_init(0,c3631d38,c0a78cab,30d,c3896d0c,...) at start_init+0x65
fork_exit(c070d540,0,c3631d38) at fork_exit+0xa6
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xc3631d70, ebp = 0 ---
[...]

/etc/fstab:
# Device		Mountpoint	FStype	Options		Dump	Pass#
/dev/ad2s3b		none		swap	sw		0	0
/dev/ad2s3a		/		ufs	rw		1	1
/dev/ad2s3e		/tmp		ufs	rw		2	2
/dev/ad2s3f		/usr		ufs	rw		2	2
/dev/ad2s3d		/var		ufs	rw		2	2
/dev/acd0		/cdrom		cd9660	ro,noauto	0	0
#/dev/ad3s5     /win/e   msdosfs  rw,longnames,-Lru_RU.KOI8-R,-Wkoi2dos 0 0
/dev/ad3s5     /win/e   msdosfs  rw,longnames,-Wkoi2dos 0 0
/dev/ad2s1     /win/c   ntfs   ro,-Wkoi2dos     0       0
/dev/ad3s1     /win/d   ntfs   ro,-Wkoi2dos     0       0
/dev/ad2s5     /win/g   ntfs  ro,-Wkoi2dos      0       0
linproc        /compat/linux/proc       linprocfs rw 0 0
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