I got the attached ZFS LORs when building ports on a new install of 9.0-CURRENT-20100610-JPSNAP. I know there have been some ZFS checkins in the last few days so I don't know if they've already been fixed?
-- Bruce
lock order reversal: 1st 0xffffff000a846458 zfs (zfs) @ /usr/src/sys/kern/vfs_mount.c:1201 2nd 0xffffff000a846638 devfs (devfs) @ /usr/src/sys/ufs/ffs/ffs_vfsops.c:1250 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x81e __lockmgr_args() at __lockmgr_args+0xd11 vop_stdlock() at vop_stdlock+0x39 VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b _vn_lock() at _vn_lock+0x47 ffs_flushfiles() at ffs_flushfiles+0xb5 ffs_unmount() at ffs_unmount+0x70 dounmount() at dounmount+0x2e6 unmount() at unmount+0x27e syscallenter() at syscallenter+0xf0 syscall() at syscall+0x4c Xfast_syscall() at Xfast_syscall+0xe1 --- syscall (22, FreeBSD ELF64, unmount), rip = 0x8006a23ec, rsp = 0x7fffffffe3c8, rbp = 0x800c09bb0 --- lock order reversal: 1st 0xffffff000a857bd8 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:1713 2nd 0xffffff0127b389f8 zfs (zfs) @ /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c:152 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x81e __lockmgr_args() at __lockmgr_args+0xd11 vop_stdlock() at vop_stdlock+0x39 VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b _vn_lock() at _vn_lock+0x47 zfs_znode_cache_constructor() at zfs_znode_cache_constructor+0x57 zfs_znode_alloc() at zfs_znode_alloc+0x39 zfs_zget() at zfs_zget+0x2a7 zfs_get_data() at zfs_get_data+0x4d zil_commit() at zil_commit+0x532 zfs_sync() at zfs_sync+0xa6 sync_fsync() at sync_fsync+0x13a sync_vnode() at sync_vnode+0x157 sched_sync() at sched_sync+0x1d1 fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffff8323b0ad30, rbp = 0 ---
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