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    SubjectOops 0002
    icebox regression # ./memkmemport_test
    Testing denied write of /dev/mem... : FAILED
    Testing denied mmap write of /dev/kmem... : FAILED
    Testing denied open of /dev/port... : FAILED
    <1>Unable to handle kernel NULL pointer dereference at virtual address
    00000000
    printing eip:
    c0387645
    *pde = 00000000
    Oops: 0002 [#3]
    CPU: 0
    EIP: 0060:[<c0387645>] Tainted: PF
    EFLAGS: 00010246
    eax: 00000000 ebx: 00000004 ecx: 00000004 edx: 00000000
    esi: 080487eb edi: 00000000 ebp: 080487ef esp: d0f55e80
    ds: 007b es: 007b ss: 0068
    Process memkmemport_tes (pid: 7355, threadinfo=d0f54000 task=dbdd0c80)
    Stack: 00000004 00000004 efd516c0 c02b7523 ef5aa9c0 00000004 00000000 c02b6a48
    00000000 080487eb 00000004 e69cd140 c02b6dd0 00000004 e69cd160 080487eb
    c02b6e39 e69cd140 00000000 00000000 080487eb 00000004 e69cd160 e69cd140
    Call Trace: [<c02b7523>] [<c02b6a48>] [<c02b6dd0>] [<c02b6e39>]
    [<c02b6dd0>] [<c01ed0e8>] [<c01ed212>] [<c019d417>] [<c019d42f>]
    Code: f3 aa 58 59 e9 fc 4c f0 ff b8 f2 ff ff ff e9 b3 9e f0 ff b8
    Segmentation fault


    regression tools that I pulled out of the grsecurity.net cvs and tested on a PaX patched kernel AND a kernel that I'm working a bit on (without pax), neither should oops. I don't readily reboot to run vanillas. This is a NULL dereference INSIDE the kernel, right? Something's broke, and it does this on 2.6.1-rc2 so whatever it is is probably still broke.

    --Bluefox

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