Feb 12 21:54:31 myhost kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000048
Feb 12 21:54:31 myhost kernel:  printing eip:
Feb 12 21:54:31 myhost kernel: e0922c7c
Feb 12 21:54:31 myhost kernel: *pde = 00000000
Feb 12 21:54:31 myhost kernel: Oops: 0000 [#1]
Feb 12 21:54:31 myhost kernel: CPU:    0
Feb 12 21:54:31 myhost kernel: EIP:    0060:[_end+541730804/1069013880]    Not tainted
Feb 12 21:54:31 myhost kernel: EFLAGS: 00010002
Feb 12 21:54:31 myhost kernel: EIP is at scan_async+0x42/0x124 [ehci_hcd]
Feb 12 21:54:31 myhost kernel: eax: 00000000   ebx: deb9c800   ecx: c03ec5fc   edx: 00000000
Feb 12 21:54:31 myhost kernel: esi: 00000000   edi: deb9c800   ebp: ffffffed   esp: d4cc7dcc
Feb 12 21:54:31 myhost kernel: ds: 007b   es: 007b   ss: 0068
Feb 12 21:54:31 myhost kernel: Process modprobe (pid: 1674, threadinfo=d4cc6000 task=d50126a0)
Feb 12 21:54:31 myhost kernel: Stack: deb9c9f8 c010a2ac d50126a0 00000000 00000000 deb9c800 00000000 deb9c864
Feb 12 21:54:31 myhost kernel:        ffffffed e0924a6f deb9c800 00000000 d4cc6000 deb9c800 e09248bc deb9c800
Feb 12 21:54:31 myhost kernel:        00000000 00005cf0 3dffde7b 00000001 d50126a0 d5012864 d4cc6000 00000246
Feb 12 21:54:31 myhost kernel: Call Trace:
Feb 12 21:54:31 myhost kernel:  [dump_stack+28/32] dump_stack+0x1c/0x20
Feb 12 21:54:31 myhost kernel:  [_end+541738471/1069013880] ehci_work+0x35/0xbf [ehci_hcd]
Feb 12 21:54:31 myhost kernel:  [_end+541738036/1069013880] ehci_stop+0xab/0xde [ehci_hcd]
Feb 12 21:54:31 myhost kernel:  [preempt_schedule+42/67] preempt_schedule+0x2a/0x43
Feb 12 21:54:31 myhost kernel:  [printk+298/378] printk+0x12a/0x17a
Feb 12 21:54:31 myhost kernel:  [usb_hcd_pci_remove+148/362] usb_hcd_pci_remove+0x94/0x16a
Feb 12 21:54:31 myhost kernel:  [usb_hcd_pci_probe+714/1182] usb_hcd_pci_probe+0x2ca/0x49e
Feb 12 21:54:31 myhost kernel:  [sys_select+325/1202] sys_select+0x145/0x4b2
Feb 12 21:54:31 myhost kernel:  [pci_device_probe_static+82/99] pci_device_probe_static+0x52/0x63
Feb 12 21:54:31 myhost kernel:  [__pci_device_probe+59/78] __pci_device_probe+0x3b/0x4e
Feb 12 21:54:31 myhost kernel:  [pci_device_probe+44/74] pci_device_probe+0x2c/0x4a
Feb 12 21:54:31 myhost kernel:  [bus_match+63/106] bus_match+0x3f/0x6a
Feb 12 21:54:31 myhost kernel:  [driver_attach+86/128] driver_attach+0x56/0x80
Feb 12 21:54:31 myhost kernel:  [bus_add_driver+139/157] bus_add_driver+0x8b/0x9d
Feb 12 21:54:31 myhost kernel:  [driver_register+47/51] driver_register+0x2f/0x33
Feb 12 21:54:31 myhost kernel:  [pci_register_driver+92/132] pci_register_driver+0x5c/0x84
Feb 12 21:54:31 myhost kernel:  [_end+541002651/1069013880] init+0x23/0x30 [ehci_hcd]
Feb 12 21:54:31 myhost kernel:  [sys_init_module+279/552] sys_init_module+0x117/0x228
Feb 12 21:54:31 myhost kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
Feb 12 21:54:31 myhost kernel: