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    Subject[opps] 2.5.64-mm1
    Date
    Got home this afternoon and found my box has paniced with:

    Unable to handle kernel NULL pointer dereference at virtual address 0000003c
    printing eip:
    c011372b
    *pde = 00000000
    Oops: 0000
    CPU: 0
    EIP: 0060:[<c011372b>] Not tainted
    EFLAGS: 00010007
    EIP is at do_schedule+0x193/0x330
    eax: dff8a000 ebx: ffffffe0 ecx: c030e0a0 edx: 00000003
    esi: dff8c660 edi: 00000000 ebp: dff8bfdc esp: dff8bfc4
    ds: 007b es: 007b ss: 0068
    Process ksoftirqd/0 (pid: 2, threadinfo=dff8a000 task=dff8c660)
    Stack: dff8a000 dff8a000 00000000 dff8a000 00000000 dff8c660 dff8bfec c011a3be
    c011a358 00000000 00000000 c01070e9 00000000 00000000 00000000
    Call Trace:
    [<c011a3be>] ksoftirqd+0x66/0xa4
    [<c011a358>] ksoftirqd+0x0/0xa4
    [<c01070e9>] kernel_thread_helper+0x5/0xc

    Code: 8b 53 5c 8b 7e 60 85 d2 75 0b 89 7b 60 ff 47 18 eb 78 8d 76

    and feeding the eip and code to ksymoops:

    >>EIP; c011372b <do_schedule+193/330> <=====

    Code; c011372b <do_schedule+193/330>
    00000000 <_EIP>:
    Code; c011372b <do_schedule+193/330> <=====
    0: 8b 53 5c mov 0x5c(%ebx),%edx <=====
    Code; c011372e <do_schedule+196/330>
    3: 8b 7e 60 mov 0x60(%esi),%edi
    Code; c0113731 <do_schedule+199/330>
    6: 85 d2 test %edx,%edx
    Code; c0113733 <do_schedule+19b/330>
    8: 75 0b jne 15 <_EIP+0x15>
    Code; c0113735 <do_schedule+19d/330>
    a: 89 7b 60 mov %edi,0x60(%ebx)
    Code; c0113738 <do_schedule+1a0/330>
    d: ff 47 18 incl 0x18(%edi)
    Code; c011373b <do_schedule+1a3/330>
    10: eb 78 jmp 8a <_EIP+0x8a>
    Code; c011373d <do_schedule+1a5/330>
    12: 8d 76 00 lea 0x0(%esi),%esi

    Does this ring bells anywhere?

    Ed Tomlinson
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