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[ INFO: inconsistent lock state ]
2.6.25-rc8 #9
---------------------------------
inconsistent {softirq-on-W} -> {in-softirq-R} usage.
swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
 (devtree_lock){---?}, at: [<c000000000440028>] .of_find_property+0x3c/0xb4
{softirq-on-W} state was registered at:
  [<c000000000087d2c>] .__lock_acquire+0x644/0xee0
  [<c0000000000886a0>] .lock_acquire+0xd8/0x124
  [<c000000000505b3c>] ._write_lock+0x48/0xa8
  [<c0000000000262b8>] .prom_add_property+0x40/0xe4
  [<c0000000007128ac>] .kexec_setup+0x58/0x184
  [<c000000000700d20>] .kernel_init+0x20c/0x3dc
  [<c000000000028a28>] .kernel_thread+0x4c/0x68
irq event stamp: 73566
hardirqs last  enabled at (73566): [<c000000000505694>] ._spin_unlock_irq+0x40/0x68
hardirqs last disabled at (73565): [<c000000000505f24>] ._spin_lock_irq+0x3c/0xbc
softirqs last  enabled at (73558): [<c0000000000610e8>] .__do_softirq+0x180/0x1a8
softirqs last disabled at (73563): [<c00000000002886c>] .call_do_softirq+0x14/0x24

other info that might help us debug this:
no locks held by swapper/0.

stack backtrace:
Call Trace:
[c00000000fff7580] [c000000000010af4] .show_stack+0x78/0x1c8 (unreliable)
[c00000000fff7630] [c000000000010c64] .dump_stack+0x20/0x34
[c00000000fff76b0] [c00000000008553c] .print_usage_bug+0x168/0x198
[c00000000fff7760] [c000000000086b2c] .mark_lock+0x258/0x50c
[c00000000fff7810] [c000000000087ca4] .__lock_acquire+0x5bc/0xee0
[c00000000fff7900] [c0000000000886a0] .lock_acquire+0xd8/0x124
[c00000000fff79c0] [c000000000505dc0] ._read_lock+0x48/0xa8
[c00000000fff7a60] [c000000000440028] .of_find_property+0x3c/0xb4
[c00000000fff7b00] [c0000000004400b8] .of_get_property+0x18/0x40
[c00000000fff7b80] [c00000000001f2bc] .rtas_token+0x40/0x70
[c00000000fff7c00] [c000000000020b30] .rtas_set_rtc_time+0x58/0x140
[c00000000fff7cc0] [c0000000000253c4] .update_persistent_clock+0x90/0xbc
[c00000000fff7d80] [c00000000007f664] .sync_cmos_clock+0x7c/0x12c
[c00000000fff7e30] [c000000000067270] .run_timer_softirq+0x174/0x224
[c00000000fff7ef0] [c000000000061034] .__do_softirq+0xcc/0x1a8
[c00000000fff7f90] [c00000000002886c] .call_do_softirq+0x14/0x24
[c00000007e047960] [c00000000000cf2c] .do_softirq+0x80/0xd8
[c00000007e047a00] [c00000000006123c] .irq_exit+0x78/0xcc
[c00000007e047a90] [c000000000025dc8] .timer_interrupt+0xd8/0x108
[c00000007e047b30] [c000000000003604] decrementer_common+0x104/0x180
--- Exception: 901 at .raw_local_irq_restore+0x48/0x54
    LR = .cpu_idle+0x13c/0x210
[c00000007e047e20] [0000000000000000] 0x0 (unreliable)
[c00000007e047e60] [c0000000000133a8] .cpu_idle+0x130/0x210
[c00000007e047ef0] [c00000000050fc54] .start_secondary+0x15c/0x188
[c00000007e047f90] [c000000000008364] .start_secondary_prolog+0xc/0x10