[4930014.100075] BUG: unable to handle kernel NULL pointer dereference at 00000140
[4930014.100198] IP: [<d0b738f5>] :batman_adv:send_vis_packets+0xca/0x333
[4930014.100296] *pde = 00000000 
[4930014.100302] Oops: 0000 [#1] 
[4930014.100375] Modules linked in: batman_adv inet_diag tun ipv6 bridge ext2 loop parport_pc parport psmouse serio_raw pcspkr i2c_viapro i2c_core via_ircc irda crc_ccitt container button snd_cmipci gameport snd_pcm snd_page_alloc snd_opl3_lib snd_timer snd_hwdep snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore shpchp pci_hotplug via_agp agpgart evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid456 async_xor async_memcpy async_tx xor raid0 md_mod ide_disk ide_cd_mod cdrom ata_generic libata scsi_mod dock ide_pci_generic via82cxxx ide_core 8139too 3c59x mii ehci_hcd uhci_hcd usbcore thermal processor fan thermal_sys [last unloaded: batman_adv]
[4930014.102759] 
[4930014.102801] Pid: 2176, comm: bat_events Not tainted (2.6.26-1-486 #1)
[4930014.102850] EIP: 0060:[<d0b738f5>] EFLAGS: 00010202 CPU: 0
[4930014.102905] EIP is at send_vis_packets+0xca/0x333 [batman_adv]
[4930014.102953] EAX: 00000000 EBX: ce8043e0 ECX: 00000140 EDX: ceab4120
[4930014.103001] ESI: cecef800 EDI: 000000fb EBP: ce65ff20 ESP: c856df7c
[4930014.103049]  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[4930014.103097] Process bat_events (pid: 2176, ti=c856c000 task=cba24e30 task.ti=c856c000)
[4930014.103148] Stack: 00000286 d0b791a0 323a6130 cecef82c 3a38393a 353a3538 d0b70062 cadb69e0 
[4930014.103480]        d0b79160 d0b7382b 00000000 c012716d cadb69e0 c01276e9 cadb69e8 c0127794 
[4930014.103812]        00000000 cba24e30 c012990b c856dfc8 c856dfc8 cadb69e0 00000000 c0129763 
[4930014.104002] Call Trace:
[4930014.104002]  [<d0b70062>] proc_log_level_write+0x92/0x120 [batman_adv]
[4930014.104002]  [<d0b7382b>] send_vis_packets+0x0/0x333 [batman_adv]
[4930014.104002]  [<c012716d>] run_workqueue+0x75/0xee
[4930014.104002]  [<c01276e9>] worker_thread+0x0/0xb5
[4930014.104002]  [<c0127794>] worker_thread+0xab/0xb5
[4930014.104002]  [<c012990b>] autoremove_wake_function+0x0/0x2d
[4930014.104002]  [<c0129763>] kthread+0x36/0x5b
[4930014.104002]  [<c012972d>] kthread+0x0/0x5b
[4930014.104002]  [<c0104937>] kernel_thread_helper+0x7/0x10
[4930014.104002]  =======================
[4930014.104002] Code: 83 c0 08 89 da e8 87 b7 ff ff 85 c0 74 5a 8b 53 0c 85 d2 74 53 8b 43 08 80 78 15 00 74 4a 8b 4a 28 0f b6 46 18 81 c1 40 01 00 00 <8b> 11 6b c0 0d 03 44 24 0c 89 10 66 8b 51 04 66 89 50 04 8b 13 
[4930014.104002] EIP: [<d0b738f5>] send_vis_packets+0xca/0x333 [batman_adv] SS:ESP 0068:c856df7c
[4930014.107202] ---[ end trace 7222e21de111afca ]---