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Thomas, et al,
I was debugging a PI mutex stress test when I got the following message
on my Athlon64x2 (running 2.6.18-rt4):
BUG: time warp detected!
prev > now, 101878c199393108 > 101878c081eaca2b:
= 4685981405 delta, on CPU#0
[<c0104c3c>] show_trace+0x2c/0x30
[<c0104dcb>] dump_stack+0x2b/0x30
[<c012ec89>] getnstimeofday+0x249/0x270
[<c013e893>] ktime_get_ts+0x23/0x60
[<c013e8ef>] ktime_get+0x1f/0x60
[<c013f042>] hrtimer_interrupt+0x62/0x310
[<c0114557>] smp_apic_timer_interrupt+0x77/0x90
[<c0103f33>] apic_timer_interrupt+0x1f/0x24
[<c0101bc4>] cpu_idle+0x84/0xe0
[<c01007a4>] rest_init+0x54/0x60
[<c06258f6>] start_kernel+0x396/0x460
[<00000000>] 0x0
skipping trace printing on CPU#0 != -1
I've seen this at least three times on -rt4. I'm building -rt5 as I
write this, so I'll run the test again on the new kernel and see what
(if anything) changes.
If you want my test, grab:
http://people.redhat.com/williams/tests/pi_tests.tar.gz
and build pi_stress.
Clark
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