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    SubjectRe: kernel panic on NHM EX machine
    On 04/10/2012 06:31 AM, Paul E. McKenney wrote:

    > On Fri, Apr 06, 2012 at 07:37:13PM +0800, Alex Shi wrote:
    >> The 3.4-rc1 kernel has a kernel panic in idle booting.
    >>
    >> Actually, from 3.3-rc1 kernel we occasionally find this issue may when
    >> do busy hackbench testing. but from rc1 kernel it will happens on each
    >> of rebooting.
    >
    > Can't say I have seen anything like this in my own testing, though I
    > did see significant instability in 3.4-rc1. However, 3.4-rc2 works
    > much better for me. Could you please try it out?
    >
    > Thanx, Paul
    >


    Ops, saw it again on rc2 kernel booting.

    <IRQ> [<ffffffff810a04bc>] __rcu_pending+0xbd/0x3bf
    [<ffffffff810a0a8a>] rcu_check_callbacks+0x69/0xa7
    [<ffffffff81045ffb>] update_process_times+0x3a/0x71
    [<ffffffff81078e63>] tick_sched_timer+0x6b/0x95
    [<ffffffff81056874>] __run_hrtimer+0xb8/0x141
    [<ffffffff81078df8>] ? tick_nohz_handler+0xd3/0xd3
    [<ffffffff81056f09>] hrtimer_interrupt+0xdb/0x199
    [<ffffffff810781aa>] tick_do_broadcast.constprop.3+0x44/0x88
    [<ffffffff81078320>] tick_do_periodic_broadcast+0x34/0x3e
    [<ffffffff81078339>] tick_handle_periodic_broadcast+0xf/0x40
    [<ffffffff810101b4>] timer_interrupt+0x10/0x17
    [<ffffffff8109b0c6>] handle_irq_event_percpu+0x5a/0x199
    [<ffffffff8109b23c>] handle_irq_event+0x37/0x53
    [<ffffffff81028785>] ? ack_apic_edge+0x1f/0x23
    [<ffffffff8109d937>] handle_edge_irq+0xa1/0xc8
    [<ffffffff8100fb5e>] handle_irq+0x125/0x12e
    [<ffffffff8103f9c8>] ? irq_enter+0x13/0x64
    [<ffffffff8100f76e>] do_IRQ+0x48/0xa0
    [<ffffffff8145b8aa>] common_interrupt+0x6a/0x6a
    [<ffffffff81078320>] ? tick_do_periodic_broadcast+0x34/0x3e
    [<ffffffff8103ecdb>] ? arch_local_irq_enable+0x8/0xd
    [<ffffffff8103f781>] __do_softirq+0x5e/0x182
    [<ffffffff81078ed2>] ? update_ts_time_stats+0x2c/0x62
    [<ffffffff8106258c>] ? sched_clock_idle_wakeup_event+0x12/0x16
    [<ffffffff81462d5c>] call_softirq+0x1c/0x30
    [<ffffffff8100fba8>] do_softirq+0x41/0x7d
    [<ffffffff8103fa5d>] irq_exit+0x44/0x9c
    [<ffffffff81060202>] scheduler_ipi+0x6b/0x6d
    [<ffffffff81025dba>] smp_reschedule_interrupt+0x16/0x18
    [<ffffffff8146290a>] reschedule_interrupt+0x6a/0x70
    <EOI> [<ffffffff812878ff>] ? arch_local_irq_enable+0x8/0xd
    [<ffffffff8106258c>] ? sched_clock_idle_wakeup_event+0x12/0x16
    [<ffffffff81288557>] acpi_idle_enter_bm+0x222/0x266
    [<ffffffff8138b98b>] cpuidle_enter+0x12/0x14
    [<ffffffff8138be61>] cpuidle_idle_call+0xef/0x191
    [<ffffffff81015501>] cpu_idle+0x9e/0xe8
    [<ffffffff81439c99>] rest_init+0x6d/0x6f
    [<ffffffff81ad3b7b>] start_kernel+0x3ad/0x3ba
    [<ffffffff81ad34ff>] ? loglevel+0x31/0x31
    [<ffffffff81ad32c3>] x86_64_start_reservations+0xae/0xb2
    [<ffffffff81ad3140>] ? early_idt_handlers+0x140/0x140
    [<ffffffff81ad33c9>] x86_64_start_kernel+0x102/0x111




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