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    SubjectRe: 2.6.25-mm1: not looking good
    On Fri, 18 Apr 2008 00:53:23 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:

    > oop, there's more:

    I found another machine! This one's an old 4-way Nocona (x86_64)

    http://userweb.kernel.org/~akpm/config-x.txt
    http://userweb.kernel.org/~akpm/dmesg-x.txt



    CPU: Physical Processor ID: 0
    CPU: Processor Core ID: 0
    CPU0: Thermal monitoring enabled (TM1)
    ACPI: Core revision 20080321
    Parsing all Control Methods:
    Table [DSDT](id 0001) - 461 Objects with 50 Devices 130 Methods 11 Regions
    tbxface-0598 [00] tb_load_namespace : ACPI Tables successfully acquired
    evxfevnt-0091 [00] enable : Transition to ACPI mode successful
    ------------[ cut here ]------------
    WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic_id+0x31/0x67()
    Modules linked in:
    Pid: 1, comm: swapper Not tainted 2.6.25-mm1 #16

    Call Trace:
    [<ffffffff8025272f>] ? print_modules+0x88/0x8f
    [<ffffffff80233493>] warn_on_slowpath+0x58/0x81
    [<ffffffff80351ceb>] ? debug_spin_lock_after+0x18/0x1f
    [<ffffffff8035217a>] ? _raw_spin_lock+0x116/0x120
    [<ffffffff80228398>] ? sub_preempt_count+0x6d/0x74
    [<ffffffff804e9ba3>] ? _spin_unlock_irqrestore+0x33/0x40
    [<ffffffff803523e6>] ? debug_smp_processor_id+0x32/0xc4
    [<ffffffff8021ede5>] read_apic_id+0x31/0x67
    [<ffffffff8066f7f2>] verify_local_APIC+0xa7/0x163
    [<ffffffff8066e837>] native_smp_prepare_cpus+0x1ed/0x301
    [<ffffffff80669ab2>] kernel_init+0x5a/0x276
    [<ffffffff804e9a1e>] ? _spin_unlock_irq+0x2a/0x35
    [<ffffffff8022b7c2>] ? finish_task_switch+0x68/0x7f
    [<ffffffff8020c1d8>] child_rip+0xa/0x12
    [<ffffffff80669a58>] ? kernel_init+0x0/0x276
    [<ffffffff8020c1ce>] ? child_rip+0x0/0x12

    ---[ end trace 4eaa2a86a8e2da22 ]---
    ------------[ cut here ]------------
    WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic_id+0x31/0x67()
    Modules linked in:
    Pid: 1, comm: swapper Tainted: G W 2.6.25-mm1 #16

    Call Trace:
    [<ffffffff8025272f>] ? print_modules+0x88/0x8f
    [<ffffffff80233493>] warn_on_slowpath+0x58/0x81
    [<ffffffff80351ceb>] ? debug_spin_lock_after+0x18/0x1f
    [<ffffffff8035217a>] ? _raw_spin_lock+0x116/0x120
    [<ffffffff80228398>] ? sub_preempt_count+0x6d/0x74
    [<ffffffff804e9ba3>] ? _spin_unlock_irqrestore+0x33/0x40
    [<ffffffff803523e6>] ? debug_smp_processor_id+0x32/0xc4
    [<ffffffff8021ede5>] read_apic_id+0x31/0x67
    [<ffffffff8066f829>] verify_local_APIC+0xde/0x163
    [<ffffffff8066e837>] native_smp_prepare_cpus+0x1ed/0x301
    [<ffffffff80669ab2>] kernel_init+0x5a/0x276
    [<ffffffff804e9a1e>] ? _spin_unlock_irq+0x2a/0x35
    [<ffffffff8022b7c2>] ? finish_task_switch+0x68/0x7f
    [<ffffffff8020c1d8>] child_rip+0xa/0x12
    [<ffffffff80669a58>] ? kernel_init+0x0/0x276
    [<ffffffff8020c1ce>] ? child_rip+0x0/0x12

    ---[ end trace 4eaa2a86a8e2da22 ]---

    That's

    WARN_ON(preemptible());

    in read_apic_id().


    Now I'll release it all. heh.


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