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    SubjectRe: Oops in ACPI with git latest
    Date
    On Thursday, 23 of October 2008, James Bottomley wrote:
    > ACPI Warning (nseval-0168): Insufficient arguments - method [_OSC] needs 5, found 4 [20080926]
    > ACPI Warning (nspredef-0252): \_SB_.PCI0._OSC: Parameter count mismatch - ASL declared 5, expected 4 [20080926]
    > ACPI Error (nspredef-0163): \_SB_.PCI0._OSC: Missing expected return value [20080926]
    > BUG: unable to handle kernel NULL pointer dereference at 00000000
    > IP: [<c0237671>] acpi_run_osc+0xa1/0x170
    > *pde = 00000000
    > Oops: 0000 [#1] SMP
    > last sysfs file:
    > Dumping ftrace buffer:
    > (ftrace buffer empty)
    > Modules linked in:
    >
    > Pid: 1, comm: swapper Not tainted (2.6.27 #124) IBM eServer 206m-[8485IZZ]-
    > EIP: 0060:[<c0237671>] EFLAGS: 00010246 CPU: 1
    > EIP is at acpi_run_osc+0xa1/0x170
    > EAX: 00000000 EBX: 00000010 ECX: 00000003 EDX: f704d4ec
    > ESI: 00000000 EDI: 00000000 EBP: f704fde4 ESP: f704fd7c
    > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
    > Process swapper (pid: 1, ti=f704e000 task=f704d150 task.ti=f704e000)
    > Stack:
    > f704fdc8 f704fdf0 00000001 00000003 00000010 c04f4a28 c014c3ab 00000001
    > 00000001 00000000 f68766a0 00000001 00000003 00000000 f704fdd4 00000003
    > 0000000c f704fdf0 c023759b 00000000 00000000 00000004 f704fd88 00000010
    > Call Trace:
    > [<c014c3ab>] ? trace_hardirqs_on+0xb/0x10
    > [<c023759b>] ? acpi_get_osc_data+0x5b/0x90
    > [<c02378c4>] ? acpi_query_osc+0x74/0xa0
    > [<c02486bb>] ? acpi_ns_get_device_callback+0xfe/0x112
    > [<c0249dbe>] ? acpi_ns_walk_namespace+0x9a/0x110
    > [<c033a5cc>] ? pci_init+0x0/0x44
    > [<c0248541>] ? acpi_get_devices+0x47/0x5d
    > [<c02485bd>] ? acpi_ns_get_device_callback+0x0/0x112
    > [<c0237850>] ? acpi_query_osc+0x0/0xa0
    > [<c0237918>] ? __pci_osc_support_set+0x28/0x30
    > [<c033b99c>] ? msi_init+0x27/0x38
    > [<c033a5fc>] ? pci_init+0x30/0x44
    > [<c010111d>] ? do_one_initcall+0x2d/0x160
    > [<c014c3ab>] ? trace_hardirqs_on+0xb/0x10
    > [<c01d6c5e>] ? proc_register+0xee/0x1f0
    > [<c03482ad>] ? _spin_unlock+0x1d/0x20
    > [<c01d6c5e>] ? proc_register+0xee/0x1f0
    > [<c01d6e64>] ? create_proc_entry+0x54/0xb0
    > [<c01622a4>] ? register_irq_proc+0xa4/0xc0
    > [<c016231c>] ? init_irq_proc+0x5c/0x70
    > [<c0521325>] ? kernel_init+0x10f/0x166
    > [<c0521216>] ? kernel_init+0x0/0x166
    > [<c0104213>] ? kernel_thread_helper+0x7/0x14
    > Code: 00 00 00 c7 45 cc 00 00 00 00 c7 45 d4 03 00 00 00 c7 45 d8 0c 00 00 00 ba 80 41 4a c0 e8 67 10 01 00 89 c7 85 c0 75 4a 8b 75 e8 <83> 3e 03 75 5c 8b 46 08 8b 18 85 db 74 29 f6 c3 02 0f 85 82 00
    > EIP: [<c0237671>] acpi_run_osc+0xa1/0x170 SS:ESP 0068:f704fd7c
    > ---[ end trace a7919e7f17c0a725 ]---
    > swapper used greatest stack depth: 5788 bytes left
    > Kernel panic - not syncing: Attempted to kill init!

    Does this patch help?

    ---
    drivers/pci/pci-acpi.c | 3 +++
    1 file changed, 3 insertions(+)

    Index: linux-2.6/drivers/pci/pci-acpi.c
    ===================================================================
    --- linux-2.6.orig/drivers/pci/pci-acpi.c
    +++ linux-2.6/drivers/pci/pci-acpi.c
    @@ -83,6 +83,9 @@ static acpi_status acpi_run_osc(acpi_han
    if (ACPI_FAILURE(status))
    return status;

    + if (!output.pointer)
    + return AE_NULL_OBJECT;
    +
    out_obj = output.pointer;
    if (out_obj->type != ACPI_TYPE_BUFFER) {
    printk(KERN_DEBUG "Evaluate _OSC returns wrong type\n");

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      Last update: 2008-10-23 22:41    [W:0.033 / U:0.040 seconds]
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