freebsd stable - Feb 2014 - LOR: --- syscall (5, FreeBSD ELF64, sys_open), rip = 0x804b3dfba, rsp = 0x7fffffff3428, rbp = 0x7fffffff3510 ---

FreeBSD pandora-d 10.0-STABLE FreeBSD 10.0-STABLE #0
0c38d4b(stable/10): Tue Feb 18 19:13:35 CET 2014
root at pandora-d:/usr/obj/usr/src/sys/OP-DEBUG  amd64

lock order reversal:
 1st 0xfffff8001c0c6b78 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2101
 2nd 0xfffffe01ed8452c8 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_vnops.c:262
 3rd 0xfffff8001c0c6418 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2101
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0237823c50
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe0237823d00
witness_checkorder() at witness_checkorder+0xd23/frame 0xfffffe0237823d90
__lockmgr_args() at __lockmgr_args+0x86c/frame 0xfffffe0237823ec0
ffs_lock() at ffs_lock+0x84/frame 0xfffffe0237823f10
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd2/frame 0xfffffe0237823f40
_vn_lock() at _vn_lock+0xab/frame 0xfffffe0237823fb0
vget() at vget+0x70/frame 0xfffffe0237824000
vfs_hash_get() at vfs_hash_get+0xf5/frame 0xfffffe0237824050
ffs_vgetf() at ffs_vgetf+0x45/frame 0xfffffe02378240f0
softdep_sync_buf() at softdep_sync_buf+0xa8c/frame 0xfffffe02378241d0
ffs_syncvnode() at ffs_syncvnode+0x258/frame 0xfffffe0237824250
ffs_truncate() at ffs_truncate+0x601/frame 0xfffffe0237824430
ufs_direnter() at ufs_direnter+0x891/frame 0xfffffe02378244f0
ufs_makeinode() at ufs_makeinode+0x573/frame 0xfffffe02378246b0
VOP_CREATE_APV() at VOP_CREATE_APV+0xc4/frame 0xfffffe02378246e0
vn_open_cred() at vn_open_cred+0x300/frame 0xfffffe0237824830
kern_openat() at kern_openat+0x25d/frame 0xfffffe02378249a0
amd64_syscall() at amd64_syscall+0x239/frame 0xfffffe0237824ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0237824ab0
--- syscall (5, FreeBSD ELF64, sys_open), rip = 0x804b3dfba, rsp 0x7fffffff3428,
rbp = 0x7fffffff3510 ---