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    SubjectRe: [RFC PATCH] Add TRACE_IRQFLAGS_SUPPORT, LOCKDEP_SUPPORT then enable ftrace for ia64
    From
    >
    > But let me try more on other ia64 boxes that I can get access.
    >
    > Stay tuned.

    I might have reproduced the problem on a HP ia64 system
    with -32 kernel as the following info. But -31 kernel with
    lockdep code enabled just works. ....debugging...

    CPI: SSDT 000000003fdf66c8 000E0 (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: SSDT 000000003fdf67b8 0013C (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: SSDT 000000003fdf68f8 000E0 (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: SSDT 000000003fdf69e8 0013C (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: SSDT 000000003fdf6b28 000E0 (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: SSDT 000000003fdf6c18 0013C (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: SSDT 000000003fdf6d58 000E0 (v01 HP BL870c 00000006 INTL 20050309)
    ACPI: Local APIC address c0000000fee00000
    SMP: Allowing 16 CPUs, 8 hotplug CPUs
    Initial ramdisk at: 0xe0000100fe9d8000 (5607915 bytes)
    SAL 3.20: HP version 3.11
    SAL Platform features: None
    SAL: AP wakeup using external interrupt vector 0xff
    ACPI: Local APIC address c0000000fee00000
    Unable to handle kernel paging request at virtual address a0000009019b0328
    swapper[0]: Oops 8813272891392 [1]
    Modules linked in:

    Pid: 0, CPU 0, comm: swapper
    psr : 00001010084a2018 ifs : 8000000000000409 ip :
    [<a0000001000e8ff0>] Not tainted (2.6.32)
    ip is at save_trace+0xb0/0x1e0
    unat: 0000000000000000 pfs : 0000000000000409 rsc : 0000000000000003
    rnat: 000000001ad27480 bsps: 000000000001003e pr : 656960155aa6a559
    ldrs: 0000000000000000 ccv : 0000000001e600f3 fpsr: 0009804c8a70433f
    csd : 0000000000000000 ssd : 0000000000000000
    b0 : a0000001000e8fc0 b6 : a000000100a6c440 b7 : e00000003f81f3a0
    f6 : 000000000000000000000 f7 : 1003e0000000000000000
    f8 : 1003e0000000000000000 f9 : 1003e0000000000000001
    f10 : 10004c3ffffffff3c0000 f11 : 1003e0000000000000031
    r1 : a00000010132c4b0 r2 : a000000100e07d60 r3 : 000000000000007c
    r8 : a0000001018f2520 r9 : a0000009019b0328 r10 : 00000000ffffffff
    r11 : a0000001019b0330 r12 : a000000100e07d60 r13 : a000000100e00000
    r14 : a0000001018f2af0 r15 : 000000000003fffe r16 : ffffffffffffffff
    r17 : 0000000000000001 r18 : 0000000000000000 r19 : 0000000000000000
    r20 : a0000001019b0330 r21 : a000000101130a00 r22 : a0000001018f2c58
    r23 : 0000000000000003 r24 : 0000000000040000 r25 : 0000000000040000
    r26 : 0000000000000000 r27 : a0000001018f2b20 r28 : 0000000000001000
    r29 : 0000000000000000 r30 : a000000100e00e00 r31 : a000000100e00dd8
    Unable to handle kernel NULL pointer dereference (address 0000000000000000)
    swapper[0]: Oops 8813272891392 [2]
    Modules linked in:

    Pid: 0, CPU 0, comm: swapper
    psr : 0000101008022018 ifs : 800000000000048e ip :
    [<a0000001001e1a60>] Not tainted (2.6.32)
    ip is at kmem_cache_alloc+0xe0/0x3c0
    unat: 0000000000000000 pfs : 000000000000048e rsc : 0000000000000003
    rnat: 0000000000000000 bsps: 0000000000000000 pr : 656960155aa65965
    ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c0270033f
    csd : 0000000000000000 ssd : 0000000000000000
    b0 : a0000001001e19f0 b6 : a000000100042420 b7 : a00000010000c9b0
    f6 : 1003ea877512c4d0b873a f7 : 1003e9e3779b97f4a7c16
    f8 : 1003e0a000000100015f7 f9 : 1003e0000000000000001
    f10 : 10004c3ffffffff3c0000 f11 : 1003e0000000000000031
    r1 : a00000010132c4b0 r2 : 0000000012000000 r3 : a000000100e00014
    r8 : 0000000000000002 r9 : 00000000003fff2f r10 : a000000101151a60
    r11 : a000000101151a60 r12 : a000000100e07230 r13 : a000000100e00000
    r14 : 0000000000000000 r15 : 0000000000200000 r16 : 0000000000000000
    r17 : 0000000000000000 r18 : a000000100e01984 r19 : a000000100e072ac
    r20 : a000000100e072a4 r21 : 0000000000000000 r22 : a000000100e072a0
    r23 : a000000100e072a4 r24 : 0000000000000001 r25 : 0000000000000000
    r26 : a000000100e072a0 r27 : 0000000000000000 r28 : a000000100e072a8
    r29 : 000000007fffffff r30 : a00000010110a030 r31 : 0000000000000002


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