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* hrtimers bug message on 2.6.18-rt4
@ 2006-10-02 17:39 Clark Williams
  2006-10-02 17:45 ` john stultz
  0 siblings, 1 reply; 8+ messages in thread
From: Clark Williams @ 2006-10-02 17:39 UTC (permalink / raw)
  To: Thomas Gleixner; +Cc: Ingo Molnar, john stultz, LKML

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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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^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2006-10-18  8:13 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-10-02 17:39 hrtimers bug message on 2.6.18-rt4 Clark Williams
2006-10-02 17:45 ` john stultz
2006-10-02 17:50   ` Clark Williams
2006-10-04  0:30   ` Daniel Walker
2006-10-04  0:38     ` john stultz
2006-10-04  0:42       ` Daniel Walker
2006-10-18  7:56       ` Ingo Molnar
2006-10-18  8:05         ` Ingo Molnar

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