New ufs LOR.

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Mounted a drive with -o sync this morning on r266123 and got a LOR I
had not seen before (ufs/soft updates)

lock order reversal:
 1st 0xfffff8005904db78 ufs (ufs) _at_ /usr/src/sys/kern/vfs_subr.c:2101
 2nd 0xfffffe00efe72080 bufwait (bufwait) _at_
/usr/src/sys/ufs/ffs/ffs_vnops.c:262
 3rd 0xfffff8005921bb78 ufs (ufs) _at_ /usr/src/sys/kern/vfs_subr.c:2101
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
0xfffffe011a213380
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe011a213430
witness_checkorder() at witness_checkorder+0xdc2/frame 0xfffffe011a2134c0
__lockmgr_args() at __lockmgr_args+0x9ca/frame 0xfffffe011a2135f0
ffs_lock() at ffs_lock+0x84/frame 0xfffffe011a213640
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xfc/frame 0xfffffe011a213670
_vn_lock() at _vn_lock+0xaa/frame 0xfffffe011a2136e0
vget() at vget+0x67/frame 0xfffffe011a213720
vfs_hash_get() at vfs_hash_get+0xe1/frame 0xfffffe011a213770
ffs_vgetf() at ffs_vgetf+0x40/frame 0xfffffe011a213800
softdep_sync_buf() at softdep_sync_buf+0xafc/frame 0xfffffe011a2138e0
ffs_syncvnode() at ffs_syncvnode+0x286/frame 0xfffffe011a213960
softdep_fsync() at softdep_fsync+0x59e/frame 0xfffffe011a213a00
ffs_fsync() at ffs_fsync+0x60/frame 0xfffffe011a213a30
VOP_FSYNC_APV() at VOP_FSYNC_APV+0xf7/frame 0xfffffe011a213a60
sys_fsync() at sys_fsync+0x175/frame 0xfffffe011a213ae0
amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe011a213bf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe011a213bf0
- --- syscall (95, FreeBSD ELF64, sys_fsync), rip = 0x80308230a, rsp =
0x7fffffffe688, rbp = 0x7fffffffe6a0 ---


Also I always get this one during installworld for, like the last 2.5
years or more.   Any chance on nuking it?

lock order reversal:
 1st 0xfffffe00ef0962e0 bufwait (bufwait) _at_
/usr/src/sys/kern/vfs_bio.c:3081
 2nd 0xfffff8000652e400 dirhash (dirhash) _at_
/usr/src/sys/ufs/ufs/ufs_dirhash.c:284
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
0xfffffe011a009410
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe011a0094c0
witness_checkorder() at witness_checkorder+0xdc2/frame 0xfffffe011a009550
_sx_xlock() at _sx_xlock+0x75/frame 0xfffffe011a009590
ufsdirhash_add() at ufsdirhash_add+0x3a/frame 0xfffffe011a0095d0
ufs_direnter() at ufs_direnter+0x6a0/frame 0xfffffe011a009690
ufs_mkdir() at ufs_mkdir+0x89c/frame 0xfffffe011a009880
VOP_MKDIR_APV() at VOP_MKDIR_APV+0xf7/frame 0xfffffe011a0098b0
kern_mkdirat() at kern_mkdirat+0x209/frame 0xfffffe011a009ae0
amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe011a009bf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe011a009bf0
- --- syscall (136, FreeBSD ELF64, sys_mkdir), rip = 0x80095550a, rsp =
0x7fffffffea08, rbp = 0x7fffffffebd0 ---
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