From: Wolfgang Grandegger <wg@grandegger.com>
To: linux-rt-users@vger.kernel.org
Subject: patch-2.6.20-rt5: time warp detected!
Date: Mon, 19 Feb 2007 18:00:37 +0100 [thread overview]
Message-ID: <45D9D7B5.9020404@grandegger.com> (raw)
Hello,
sometimes I get the following message when calling ktime_get_real() from
my interrupt handler:
BUG: time warp detected!
prev > now, 104357354c79dfed > 1043573435312fb2:
= 4685606971 delta, on CPU#0
[<c0103d51>] dump_trace+0x68/0x1d9
[<c0103edd>] show_trace_log_lvl+0x1b/0x36
[<c01044dd>] show_trace+0xf/0x11
[<c010455e>] dump_stack+0x12/0x14
[<c012f1b2>] ktime_get_real+0x10/0x2c
[<e09c03ad>] rtcan_rcv+0x12/0x99 [xeno_can]
[<e09c951d>] rtcan_sja_interrupt+0x220/0x43e [xeno_can_sja1000]
[<e0992018>] _rtdm_irq_trampoline+0x15/0x34 [xeno_rtdm]
[<c0145eb7>] handle_IRQ_event+0x41/0xb7
[<c0146334>] thread_simple_irq+0x31/0x5f
[<c01468f8>] do_irqd+0xbd/0x249
[<c012c531>] kthread+0xa0/0xcb
[<c010397b>] kernel_thread_helper+0x7/0x10
=======================
---------------------------
| preempt count: 00000000 ]
| 0-level deep critical section nesting:
----------------------------------------
Any idea how this can happen?
Thanks.
Wolfgang.
next reply other threads:[~2007-02-19 16:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-19 17:00 Wolfgang Grandegger [this message]
2007-02-20 10:14 ` patch-2.6.20-rt5: time warp detected! Thomas Gleixner
2007-02-20 18:07 ` Wolfgang Grandegger
2007-02-20 18:10 ` Alex Khripin
2007-02-21 15:00 ` Thomas Gleixner
2007-02-21 18:41 ` Wolfgang Grandegger
2007-02-21 19:24 ` Thomas Gleixner
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