On Mon, 2007-02-19 at 18:00 +0100, Wolfgang Grandegger wrote:
> Hello,
>
> sometimes I get the following message when calling ktime_get_real() from
> my interrupt handler:
SMP machine ?
> 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?
Can you please provide a boot log ?
tglx
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