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    SubjectRe: 2.6.12-rc4-mm1
    Date
    2.6.12-rc4-mm1 on a Sharp Zaurus (arm pxa255) results in:

    VFS: Mounted root (jffs2 filesystem) readonly.
    Freeing init memory: 76K
    Kernel panic - not syncing: Attempted to kill init!
    <3>BUG: soft lockup detected on CPU#0!

    Pid: 1, comm: init
    CPU: 0
    PC is at __delay+0x0/0xc
    LR is at panic+0x108/0x130
    pc : [<c00f71ac>] lr : [<c0037140>] Not tainted
    sp : c0301f4c ip : c0301f4c fp : c0301f58
    r10: 4001d000 r9 : c0300000 r8 : 00007f00
    r7 : c0300000 r6 : c027a3e8 r5 : c027a3e4 r4 : 0000240b
    r3 : 60000013 r2 : 000003ca r1 : 00000000 r0 : 00017133
    Flags: nzCv IRQs on FIQs on Mode SVC_32 Segment user
    Control: 397F Table: A1CB0000 DAC: 00000015
    [<c0059c90>] (softlockup_tick+0x0/0xa0) from [<c0021020>]
    (timer_tick+0xb4/0xf8)
    r5 = C0300000 r4 = C0301F04
    [<c0020f6c>] (timer_tick+0x0/0xf8) from [<c00277e0>]
    (pxa_timer_interrupt+0x48/0xa8)
    r6 = C0301F04 r5 = C0300000 r4 = F2A00000
    [<c0027798>] (pxa_timer_interrupt+0x0/0xa8) from [<c001cbc4>]
    (__do_irq+0x6c/0xc4)
    r8 = C0301F04 r7 = 00000000 r6 = 00000000 r5 = C0300000
    r4 = C0230374
    [<c001cb58>] (__do_irq+0x0/0xc4) from [<c001ce48>] (do_level_IRQ+0x68/0xb8)
    [<c001cde0>] (do_level_IRQ+0x0/0xb8) from [<c001ceec>]
    (asm_do_IRQ+0x54/0x160)
    r6 = 04000000 r5 = F2D00000 r4 = FFFFFFFF
    [<c001ce98>] (asm_do_IRQ+0x0/0x160) from [<c001ba14>] (__irq_svc+0x34/0x74)
    [<c0037038>] (panic+0x0/0x130) from [<c003a22c>] (do_exit+0x7c8/0xda4)
    r3 = 00000001 r2 = C02E8E40 r1 = C02E8D60 r0 = C02004C0
    [<c0039a64>] (do_exit+0x0/0xda4) from [<c003a900>]
    (do_group_exit+0xc0/0x104)
    [<c003a840>] (do_group_exit+0x0/0x104) from [<c001be20>]
    (ret_fast_syscall+0x0/0x2c)
    r5 = 00000000 r4 = 0000002F

    There was an extremely long pause after it printed "Kernel panic ..." before
    it printed the traceback.

    2.6.12-rc4 doesn't do this, neither does 2.6.12-rc3-mm2.

    Any ideas where the problem is before I start looking?

    Regards,

    Richard

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