On Thu, Dec 31, 2009 at 12:10, Pete French <petefre...@ticketswitch.com> wrote: > am still trying to get the machine which ocks up to lock up > when I have DDb, KDB and WITNESS in the ernel. It's not locked yet > but I have got the following in dmesg... > > lock order reversal: > 1st 0xffffff8052321e50 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2559 > 2nd 0xffffff000384a800 dirhash (dirhash) @ > /usr/src/sys/ufs/ufs/ufs_dirhash.c:285 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > _witness_debugger() at _witness_debugger+0x2c > witness_checkorder() at witness_checkorder+0x66f > _sx_xlock() at _sx_xlock+0x35 > ufsdirhash_acquire() at ufsdirhash_acquire+0x33 > ufsdirhash_remove() at ufsdirhash_remove+0x18 > ufs_dirremove() at ufs_dirremove+0x161 > ufs_remove() at ufs_remove+0x92 > VOP_REMOVE_APV() at VOP_REMOVE_APV+0x34 > kern_unlinkat() at kern_unlinkat+0x252 > syscall() at syscall+0x19d > Xfast_syscall() at Xfast_syscall+0xe1 > --- syscall (10, FreeBSD ELF64, unlink), rip = 0x80072a28c, rsp = > 0x7fffffffe418, rbp = 0x7fffffffef6e --- > lock order reversal: > 1st 0xffffff003e230d80 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1058 > 2nd 0xffffff003e2307f8 devfs (devfs) @ /usr/src/sys/kern/vfs_subr.c:2083 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > _witness_debugger() at _witness_debugger+0x2c > witness_checkorder() at witness_checkorder+0x66f > __lockmgr_args() at __lockmgr_args+0x475 > vop_stdlock() at vop_stdlock+0x39 > VOP_LOCK1_APV() at VOP_LOCK1_APV+0x46 > _vn_lock() at _vn_lock+0x47 > vget() at vget+0x56 > devfs_allocv() at devfs_allocv+0x103 > devfs_root() at devfs_root+0x48 > vfs_donmount() at vfs_donmount+0xf43 > nmount() at nmount+0x63 > syscall() at syscall+0x19d > Xfast_syscall() at Xfast_syscall+0xe1 > --- syscall (378, FreeBSD ELF64, nmount), rip = 0x8007b062c, rsp = > 0x7fffffffdd28, rbp = 0x >
I think this is LOR #261 and therefore harmless. http://sources.zabbadoz.net/freebsd/lor.html _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"