_ [comp] EIP is at slave_alloc+0x23/0x4a [usb_storage]

なんか iPod が充電できてないなと思ったら、何か踏んでたようだ。

BUG: unable to handle kernel NULL pointer dereference at 00000004
IP: [<f8e7a5ae>] :usb_storage:slave_alloc+0x23/0x4a
*pde = 00000000
Oops: 0000 [#1] PREEMPT SMP
        :
Pid: 23818, comm: usb-stor-scan Tainted: P          (2.6.26-XXXXXXXX #1)
EIP: 0060:[<f8e7a5ae>] EFLAGS: 00010206 CPU: 1
EIP is at slave_alloc+0x23/0x4a [usb_storage]
EAX: 00000000 EBX: f6489b4c ECX: f59ecc08 EDX: f0d6b000
ESI: f59ecc00 EDI: f6e1a614 EBP: f6489800 ESP: e2212ddc
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process usb-stor-scan (pid: 23818, ti=e2212000 task=f6fb6a90 task.ti=e2212000)
        :
EIP: [<f8e7a5ae>] slave_alloc+0x23/0x4a [usb_storage] SS:ESP 0068:e2212ddc