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    SubjectRe: hrtimers bug message on 2.6.18-rt4
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    On Tue, 2006-10-03 at 17:30 -0700, Daniel Walker wrote:
    > On Mon, 2006-10-02 at 10:45 -0700, john stultz wrote:
    > > On Mon, 2006-10-02 at 12:39 -0500, Clark Williams wrote:
    > > > 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
    > >
    > > Could you send me your dmesg and .config?
    > >
    >
    >
    > This is likely a different issue but, I can generate this messages, like
    > the following,
    >
    > BUG: time warp detected!
    > prev > now, 1018dd8f5e9e5c1f > 0000001748787c3e:
    > = 1159920411885297633 delta, on CPU#1
    > [<c010473b>] show_trace_log_lvl+0x1eb/0x1f0
    > [<c0104efb>] show_trace+0x1b/0x20
    > [<c0105004>] dump_stack+0x24/0x30
    > [<c012b030>] do_gettimeofday+0x1a0/0x1d0
    > [<c0125024>] sys_gettimeofday+0x24/0x90
    > [<c0103567>] syscall_call+0x7/0xb
    > [<b7f9b410>] 0xb7f9b410
    >
    >
    > With ltpstess . It has a settimeofday test which can trigger it. It gets
    > called with wild values.

    Hmmm... That sounds like a false positive, where Ingo's time warp
    checking code isn't resetting on settimeofday() calls.

    thanks
    -john


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