Hi Andrew,

Following call trace is seen will booting up the machine. Similar
call trace was reported for 2.6.23-rc3-mm1 at
http://lkml.org/lkml/2007/8/26/77

Mount-cache hash table entries: 512
WARNING: at kernel/lockdep.c:2664 check_flags()
 [<c010612f>] dump_trace+0x68/0x1d2
 [<c01062b1>] show_trace_log_lvl+0x18/0x2c
 [<c0106c23>] show_trace+0xf/0x11
 [<c0106d33>] dump_stack+0x12/0x14
 [<c01414ac>] check_flags+0x92/0x145
 [<c0144426>] lock_acquire+0x2f/0x8a
 [<c0509771>] _spin_lock+0x33/0x3e
 [<c0180e2b>] ifind+0x16/0x7f
 [<c0180eff>] ilookup5_nowait+0x33/0x38
 [<c01a793d>] sysfs_addrm_start+0x36/0x84
 [<c01a7dc7>] create_dir+0x37/0x86
 [<c01a7e43>] sysfs_create_dir+0x2d/0x40
 [<c029ab5e>] kobject_add+0xe9/0x190
 [<c029ac26>] kset_register+0x19/0x2e
 [<c07a58a7>] mnt_init+0xe0/0x1be
 [<c07a552a>] vfs_caches_init+0x11e/0x12e
 [<c07938e5>] start_kernel+0x2ed/0x318
 =======================
irq event stamp: 1139108
hardirqs last  enabled at (1139108): [<c05085a4>] __mutex_lock_slowpath+0x24d/0x273
hardirqs last disabled at (1139107): [<c0124221>] cpu_clock+0xd/0x4c
softirqs last  enabled at (1138798): [<c012d2b5>] do_softirq+0x36/0x51
softirqs last disabled at (1138793): [<c012d2b5>] do_softirq+0x36/0x51
CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000 0004e3bd 00000000 00000001 00000000


-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.