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    Subject2.6.32.21 - uptime related crashes?
    Hello everybody,

    I'm trying to solve strange issue, today, my fourth machine running 2.6.32.21 just crashed. What makes the cases similar, apart fromn same kernel version is that all boxes had very similar uptimes: 214, 216, 216, and 224 days. This might just be a coincidence, but I think this might be important.

    Unfortunately I only have backtraces of two crashes (and those are trimmed, sorry), and they do not look as similar as I'd like, but still maybe there is something in common:

    [<ffffffff81120cc7>] pollwake+0x57/0x60
    [<ffffffff81046720>] ? default_wake_function+0x0/0x10
    [<ffffffff8103683a>] __wake_up_common+0x5a/0x90
    [<ffffffff8103a313>] __wake_up+0x43/0x70
    [<ffffffffa0321573>] process_masterspan+0x643/0x670 [dahdi]
    [<ffffffffa0326595>] coretimer_func+0x135/0x1d0 [dahdi]
    [<ffffffff8105d74d>] run_timer_softirq+0x15d/0x320
    [<ffffffffa0326460>] ? coretimer_func+0x0/0x1d0 [dahdi]
    [<ffffffff8105690c>] __do_softirq+0xcc/0x220
    [<ffffffff8100c40c>] call_softirq+0x1c/0x30
    [<ffffffff8100e3ba>] do_softirq+0x4a/0x80
    [<ffffffff810567c7>] irq_exit+0x87/0x90
    [<ffffffff8100d7b7>] do_IRQ+0x77/0xf0
    [<ffffffff8100bc53>] ret_from_intr+0x0/Oxa
    <EUI> [<ffffffffa019e556>] ? acpi_idle_enter_bm+0x273/0x2a1 [processor]
    [<ffffffffa019e54c>] ? acpi_idle_enter_bm+0x269/0x2a1 [processor]
    [<ffffffff81280095>] ? cpuidle_idle_call+0xa5/0x150
    [<ffffffff8100a18f>] ? cpu_idle+0x4f/0x90
    [<ffffffff81323c95>] ? rest_init+0x75/0x80
    [<ffffffff81582d7f>] ? start_kernel+0x2ef/0x390
    [<ffffffff81582271>] ? x86_64_start_reservations+0x81/0xc0
    [<ffffffff81582386>] ? x86_64_start_kernel+0xd6/0x100

    this box (actually two of the crashed ones) is using dahdi_dummy module to generate timing for asterisk SW pbx, so maybe it's related to it.


    [<ffffffff810a5063>] handle_IRQ_event+0x63/0x1c0
    [<ffffffff810a71ae>] handle_edge_irq+0xce/0x160
    [<ffffffff8100e1bf>] handle_irq+0x1f/0x30
    [<ffffffff8100d7ae>] do_IRQ+0x6e/0xf0
    [<ffffffff8100bc53>] ret_from_intr+0x0/Oxa
    <EUI> [<ffffffff8133?f?f>] ? _spin_un1ock_irq+0xf/0x40
    [<ffffffff81337f79>] ? _spin_un1ock_irq+0x9/0x40
    [<ffffffff81064b9a>] ? exit_signals+0x8a/0x130
    [<ffffffff8105372e>] ? do_exit+0x7e/0x7d0
    [<ffffffff8100f8a7>] ? oops_end+0xa7/0xb0
    [<ffffffff8100faa6>] ? die+0x56/0x90
    [<ffffffff8100c810>] ? do_trap+0x130/0x150
    [<ffffffff8100ccca>] ? do_divide_error+0x8a/0xa0
    [<ffffffff8103d227>] ? find_busiest_group+0x3d7/0xa00
    [<ffffffff8104400b>] ? cpuacct_charge+0x6b/0x90
    [<ffffffff8100c045>] ? divide_error+0x15/0x20
    [<ffffffff8103d227>] ? find_busiest_group+0x3d7/0xa00
    [<ffffffff8103cfff>] ? find_busiest_group+0x1af/0xa00
    [<ffffffff81335483>] ? thread_return+0x4ce/0x7bb
    [<ffffffff8133bec5>] ? do_nanosleep+0x75/0x30
    [<ffffffff810?1?4e>] ? hrtimer_nanosleep+0x9e/0x120
    [<ffffffff810?08f0>] ? hrtimer_wakeup+0x0/0x30
    [<ffffffff810?183f>] ? sys_nanosleep+0x6f/0x80

    another two don't use it. only similarity I see here is that it seems to be IRQ handling related, but both issues don't have anything in common.
    Does anybody have an idea on where should I look? Of course I should update all those boxes to (at least) latest 2.6.32.x, and I'll do it for sure, but still I'd first like to know where the problem was, and if it has been fixed, or how to fix it...
    I'd be gratefull for any help...
    BR
    nik


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