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    SubjectRe: 2.6.16-rc1 kernel init oops
    On Sun, 29 Jan 2006 15:07:37 -0800 Randy.Dunlap wrote:

    > On Sun, 29 Jan 2006 13:08:12 -0800 Randy.Dunlap wrote:
    >
    > > On Sun, 29 Jan 2006 12:19:23 -0800 Greg KH wrote:
    > >
    > > > On Sun, Jan 29, 2006 at 11:19:34AM -0800, Randy.Dunlap wrote:
    > > > > On Sun, 29 Jan 2006 11:00:29 -0800 Greg KH wrote:
    > > > >
    > > > > > On Sat, Jan 28, 2006 at 05:55:11PM -0800, Randy.Dunlap wrote:
    > > > > > > On Sat, 28 Jan 2006 17:18:41 -0800 Randy.Dunlap wrote:
    > > > > > >
    > > > > > > > Hi,
    > > > > > > >
    > > > > > > > I'm trying to boot 2.6.16-rc1 on a T42 Thinkpad notebook.
    > > > > > > > No serial port for serial console. I don't think that networking
    > > > > > > > is alive yet (for network console ?).
    > > > > > > >
    > > > > > > > Anyone recognize this? got patch?
    > > > > > > >
    > > > > > > > This is just typed in, so could contain a few errors.
    > > > > > > >
    > > > > > > > Unable to handle kernel NULL pointer dereference at virtual address 00000001
    > > > > > > > printing eip:
    > > > > > > > 00000001
    > > > > > > > *pde = 00000000
    > > > > > > > Oops: 0000 [#1]
    > > > > > > > SMP DEBUG_PAGEALLOC
    > > > > > > > Modules linked in:
    > > > > > > > CPU: 0
    > > > > > > > EIP: 0060:[<00000001>] Not tainted VLI
    > > > > > > > EFLAGS: 00010202 (2.6.16-rc1)
    > > > > > > > EIP is at 0x1
    > > > > > > > <skip reg. dump>
    > > > > > > > <skip stack dump>
    > > > > > > > Call trace:
    > > > > > > > show_stack_log_lvl+0xa5/0xad
    > > > > > > > show_registers+0xf9/0x162
    > > > > > > > die+0xfe/0x179
    > > > > > > > do_page_fault+0x399/0x4d8
    > > > > > > > error_code+0x4f/0x54
    > > > > > > > device_register+0x13/0x18
    > > > > > > > platform_bus_init+0xd/0x19
    > > > > > > > driver_init+0x1c/0x2d
    > > > > > > > do_basic_setup+0x12/0x1e
    > > > > > > > init+0x95/0x195
    > > > > > > > kernel_thread_helper+0x5/0xb
    > > > > > > > Code: Bad EIP value.
    > > > > > >
    > > > > > > Both 2.6.15 and 2.6.15.1 boot OK for me.
    > > > > > > .config for 2.6.16-rc1 is at
    > > > > > > http://www.xenotime.net/linux/doc/config-2616rc1
    > > > > >
    > > > > > If you disable CONFIG_PNP and CONFIG_ISAPNP options does that help?
    > > > >
    > > > > Nope, no change. Any other suggestions?
    > > > >
    > > > > I just booted with a KOBJECT_DEBUG
    > > > > built kernel and it's failing after:
    > > > >
    > > > > kobject platform: registering, parent: <NULL>, set: devices
    > > >
    > > > Can you enable CONFIG_DEBUG_DRIVER and see if that helps?
    > >
    > > Yes. Transcribing that:
    > >
    > > kobject platform: registering, parent: <NULL>, set: devices
    > > DEV: registering device: ID = 'platform'
    > > kobject_uevent
    > > PM: Adding info for No Bus:platform
    > > <Oops happens>
    >
    > odd. in device_add(), <platform_notify> (a function ptr)
    > has a value of 1. garbahze.

    furthermore, this happens on 2.6.16-rc1 and 2.6.16-rc1-git4,
    but <platform_notify> is not at the same memory address in
    my builds, so it smells more like a bad ptr reference
    somewhere than like bad memory IMO.

    ---
    ~Randy
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