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    Subjectusb oops in 2.6.13-rc6-mm2
    Hi,

    usbcore: deregistering driver usb-storage
    usb 1-1: USB disconnect, address 3
    Unable to handle kernel NULL pointer dereference at 0000000000000000
    RIP:
    <ffffffff803cf140>{_spin_lock+0}
    PGD 1c303067 PUD 1c304067 PMD 0
    Oops: 0002 [1] SMP
    CPU 0
    Modules linked in: nls_iso8859_1 nls_cp437 vfat fat nls_base ide_cd
    cdrom
    Pid: 80, comm: khubd Not tainted 2.6.13-rc6-mm2
    RIP: 0010:[<ffffffff803cf140>] <ffffffff803cf140>{_spin_lock+0}
    RSP: 0018:ffff81001fc75d80 EFLAGS: 00010296
    RAX: ffff81001c08cdb0 RBX: ffff810019f5f8f8 RCX: ffff81001c4b14e8
    RDX: 0000000000000070 RSI: ffffffff8040cfcc RDI: 0000000000000000
    RBP: ffff810019f5f8a0 R08: 0000000000000000 R09: 0000000000000000
    R10: 0000000000000001 R11: ffffffff8018ad27 R12: 0000000000000000
    R13: ffff810001a23c20 R14: ffff810001a23c00 R15: 0000000000000100
    FS: 00002aaaaade8b00(0000) GS:ffffffff80612880(0000)
    knlGS:0000000061ad4bb0
    CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    CR2: 0000000000000000 CR3: 000000001c302000 CR4: 00000000000006e0
    Process khubd (pid: 80, threadinfo ffff81001fc74000, task
    ffff8100019f4e80)
    Stack: ffffffff803cd130 ffffffff80500aa0 ffff810019f5f980
    ffffffff80500aa0
    ffffffff802a3263 ffff810019f5f9e8 ffff810019f5f8a0
    ffff810019f5f8a0
    ffffffff802a34f2 ffffffff80500880
    Call Trace:<ffffffff803cd130>{klist_remove+21}
    <ffffffff802a3263>{__device_release_driver+75}
    <ffffffff802a34f2>{device_release_driver+39}
    <ffffffff802a2db7>{bus_remove_device+146}
    <ffffffff802a1f75>{device_del+55}
    <ffffffff802a1fbc>{device_unregister+9}
    <ffffffff802ff51c>{hub_thread+900}
    <ffffffff80145e70>{autoremove_wake_function+0}
    <ffffffff802ff198>{hub_thread+0}
    <ffffffff80145a70>{keventd_create_kthread+0}
    <ffffffff80145c9e>{kthread+203}
    <ffffffff8012e3ae>{schedule_tail+57}
    <ffffffff8010e6ce>{child_rip+8}
    <ffffffff80145a70>{keventd_create_kthread+0}
    <ffffffff80145bd3>{kthread+0} <ffffffff8010e6c6>{child_rip+0}


    Code: f0 fe 0f 79 09 f3 90 80 3f 00 7e f9 eb f2 c3 f0 ff 0f 8b 07
    RIP <ffffffff803cf140>{_spin_lock+0} RSP <ffff81001fc75d80>
    CR2: 0000000000000000

    Just got this oops removing a usb-storage managed usb device.
    usb-storage had been manually removed (as you can see from the kernel
    message), a few seconds later I removed power from the device and the
    oopsed happened right then.

    --
    Jens Axboe

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