Something

Mar 13 11:57:28 localhost kernel: usbcore: deregistering interface driver ftdi_sio
Mar 13 11:57:28 localhost kernel: Unable to handle kernel NULL pointer dereference at 0000000000000018 RIP:
Mar 13 11:57:28 localhost kernel:  [<ffffffff804c7fd7>] klist_del+0xc/0x6b
Mar 13 11:57:28 localhost kernel: PGD 32a7b067 PUD 3b4c4067 PMD 0
Mar 13 11:57:28 localhost kernel: Oops: 0000 [1] PREEMPT
Mar 13 11:57:28 localhost kernel: CPU 0
Mar 13 11:57:28 localhost kernel: Modules linked in: ftdi_sio usbserial binfmt_misc tun ipv6 loop tuner tvaudio bttv video_buf firmware_class ir_common btcx_risc tveeprom cdc_subset usbnet
Mar 13 11:57:28 localhost kernel: Pid: 3607, comm: rmmod Not tainted 2.6.21-rc3 #10
Mar 13 11:57:28 localhost kernel: RIP: 0010:[<ffffffff804c7fd7>]  [<ffffffff804c7fd7>] klist_del+0xc/0x6b
Mar 13 11:57:28 localhost kernel: RSP: 0018:ffff81001f5c5d58  EFLAGS: 00010292
Mar 13 11:57:28 localhost kernel: RAX: 0000000000000000 RBX: ffff810047b404e0 RCX: 0000000000000001
Mar 13 11:57:28 localhost kernel: RDX: ffff810008d2a950 RSI: ffffffff8038c13d RDI: ffff810047b40500
Mar 13 11:57:28 localhost kernel: RBP: ffff810047b40500 R08: ffff810008d2a940 R09: 0000000000000001
Mar 13 11:57:28 localhost kernel: R10: 0000000000000000 R11: ffff81001f5c5df8 R12: ffff81005b4a0020
Mar 13 11:57:28 localhost kernel: R13: 0000000000000000 R14: ffff81005b4a0020 R15: 0000000000000880
Mar 13 11:57:28 localhost kernel: FS:  00002b4c8f7926f0(0000) GS:ffffffff805e6000(0000) knlGS:0000000000000000
Mar 13 11:57:28 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Mar 13 11:57:28 localhost kernel: CR2: 0000000000000018 CR3: 0000000037f80000 CR4: 00000000000006e0
Mar 13 11:57:28 localhost kernel: Process rmmod (pid: 3607, threadinfo ffff81001f5c4000, task ffff8100503df100)
Mar 13 11:57:28 localhost kernel: Stack:  ffff81001f5c5df8 ffff810047b404e0 ffff810008d2a940 ffffffff803f5c0c
Mar 13 11:57:28 localhost kernel:  ffff810047b404e0 ffff810008d2a940 ffff810008d2a940 ffffffff803f5d98
Mar 13 11:57:28 localhost kernel:  0000000000000001 ffffffff880ccb2a ffff81005b4f5000 ffff810008d2a9a0
Mar 13 11:57:28 localhost kernel: Call Trace:
Mar 13 11:57:28 localhost kernel:  [<ffffffff803f5c0c>] device_del+0x1c/0x19f
Mar 13 11:57:28 localhost kernel:  [<ffffffff803f5d98>] device_unregister+0x9/0x12
Mar 13 11:57:28 localhost kernel:  [<ffffffff880ccb2a>] :usbserial:destroy_serial+0x98/0xef
Mar 13 11:57:28 localhost kernel:  [<ffffffff880cca92>] :usbserial:destroy_serial+0x0/0xef
Mar 13 11:57:28 localhost kernel:  [<ffffffff80230f2f>] kref_put+0x5c/0x67
Mar 13 11:57:28 localhost kernel:  [<ffffffff880cc997>] :usbserial:usb_serial_disconnect+0x8c/0xb4
Mar 13 11:57:28 localhost kernel:  [<ffffffff80433402>] usb_unbind_interface+0x59/0xa6
Mar 13 11:57:28 localhost kernel:  [<ffffffff803f7bfc>] __device_release_driver+0x8e/0xb0
Mar 13 11:57:28 localhost kernel:  [<ffffffff803f814c>] driver_detach+0xe4/0x12b
Mar 13 11:57:28 localhost kernel:  [<ffffffff803f77a5>] bus_remove_driver+0x6d/0x90
Mar 13 11:57:28 localhost kernel:  [<ffffffff803f81c8>] driver_unregister+0xd/0x16
Mar 13 11:57:28 localhost kernel:  [<ffffffff80432d4b>] usb_deregister+0xbe/0xc7
Mar 13 11:57:28 localhost kernel:  [<ffffffff880d98f1>] :ftdi_sio:ftdi_exit+0x35/0x42
Mar 13 11:57:28 localhost kernel:  [<ffffffff8028a686>] sys_delete_module+0x18c/0x1bb
Mar 13 11:57:28 localhost kernel:  [<ffffffff80254f9e>] system_call+0x7e/0x83
Mar 13 11:57:28 localhost kernel:
Mar 13 11:57:28 localhost kernel:
Mar 13 11:57:28 localhost kernel: Code: 48 8b 58 18 65 48 8b 04 25 10 00 00 00 ff 80 44 e0 ff ff e8
Mar 13 11:57:28 localhost kernel: RIP  [<ffffffff804c7fd7>] klist_del+0xc/0x6b
Mar 13 11:57:28 localhost kernel:  RSP <ffff81001f5c5d58>
Mar 13 11:57:28 localhost kernel: CR2: 0000000000000018