BUG in check_monotonic_clock()

[Daniel Walker <dwalker@mvista.com>]

This is off a dual P3 during boot with 2.6.15-rt6. I'll send the .config
privately . I had a fair amount of debugging on.


check_monotonic_clock: monotonic inconsistency detected!
        from        1a27e7384 (7021163396) to        19f92d748 (6972168008).
udev/238[CPU#1]: BUG in check_monotonic_clock at kernel/time/timeofday.c:160
 [<c0105b03>] dump_stack+0x23/0x30 (20)
 [<c0129e43>] __WARN_ON+0x63/0x80 (40)
 [<c0148584>] check_monotonic_clock+0xd4/0xe0 (52)
 [<c01489b8>] get_monotonic_clock+0xc8/0x100 (56)
 [<c014475d>] __hrtimer_start+0xdd/0x100 (40)
 [<c0400046>] schedule_hrtimer+0x46/0xd0 (48)
 [<c0144f0f>] hrtimer_nanosleep+0x5f/0x130 (104)
 [<c0145053>] sys_nanosleep+0x73/0x80 (36)
 [<c0104b2a>] syscall_call+0x7/0xb (-4020)
---------------------------
| preempt count: 00000002 ]
| 2-level deep critical section nesting:
----------------------------------------
.. [<c014cf1c>] .... add_preempt_count+0x1c/0x20
.....[<c0143e2a>] ..   ( <= lock_hrtimer_base+0x2a/0x60)
.. [<c014cf1c>] .... add_preempt_count+0x1c/0x20
.....[<c0129df6>] ..   ( <= __WARN_ON+0x16/0x80)


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