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    SubjectRe: ohci1396_dma=early nogo on an imac?
    Stefan Richter wrote:
    > Justin Mattock wrote:
    >> [ 660.190134] ieee1394: Current remote IRM is not 1394a-2000
    >> compliant, resetting...
    > ...
    >> keeps going.
    >
    > It's a bug in ieee1394. http://bugzilla.kernel.org/show_bug.cgi?id=8403
    >
    > Use the ieee1394 disable_irm=1 parameter on one or both nodes.
    > Perhaps firescope will then get going as well.
    O.K. Thanks to you
    using 2.6.30.4 I was able to log the boot message.
    now I can see if I can grab the info on the stuckage that
    im getting with the bad kernel.

    The problem im seeing is if I use ohci1394_dma=early on the bad kernel
    instantly Ill get a message on the screen saying:

    PANIC: early exception 08 rip 246:10 error ffffffff8145ff15 cr2 0

    if I don't use the boot param the system loads but half way through
    ill get a message of

    manually writing down:

    [ 0.655640] [<ffffffff81440c33>] panic+0x84/0x129
    [ 0.655883] [<ffffffff81063f96>] do_exit+0x84/0x67e
    [ 0.656125] [<ffffffff81445044>] oops_end+0x9c/0xb7
    [ 0.656368] [<ffffffff81044a6c>] no_context+0x200/0x223
    [ 0.656611] [<ffffffff81442d3d>] ? __mutex_lock_slowpath+0x226/0x249
    [ 0.656848] [<ffffffff81044c36>] __bad_area_nosemaphore+0x1a7/0x1e1
    [ 0.657097] [<ffffffff81442b01>]? mutex_unlock+0x1c/0x32
    [ 0.657097] [<ffffffff811ce094>] ? inode_doinit_with_dentry+0x533/0x5be
    [ 0.657579] [<ffffffff81443ee0>] ? _spin_unlock+0x1c/0x32
    [ 0.657822] [<ffffffff81044c91>] bad_area_nosemaphore+0x2a/0x40
    [ 0.658066] [<ffffffff811ce149>] ? selinux_d_instantiate+0x2a/0x40
    [ 0.658309] [<ffffffff8144687d>] do_page_fault+0x192/0x2dd
    [ 0.658549] [<ffffffff814444cf>] page_fault+0x1f/0x30
    [ 0.658791] [<ffffffff8120e856>] ? strcmp+0x17/0x46
    [ 0.659040] [<ffffffff810b9ca0>] event_create_dir+0x49/0x37b
    [ 0.659276] [<ffffffff81696f0a>] ? event_trace_init+0x0/0x1a2
    [ 0.659519] [<ffffffff81697061>] event_trace_init+0x157/0x1a2
    [ 0.659762] [<ffffffff81696f0a>] ? event_trace_init+0x0/0x1a2
    [ 0.660008] [<ffffffff810091db>] do_one_initcall+0x65/0x14e
    [ 0.660251] [<ffffffff81140000>] ? proc_set_super+0x49/0x5d
    [ 0.660488] [<ffffffff8167ef53>] kernel_init+0x160/0x1cc
    [ 0.660731] [<ffffffff8102801a>] child_rip+0xa/0x20
    [ 0.660973] [<ffffffff8167edf3>] ? kernel_init+0x0/0x1cc
    [ 0.661220] [<ffffffff81028010>] ? child_rip+0x0/0x20


    Justin P. Mattock


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