[ 2937.469910] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 2937.470826] IP: [<(null)>] (null)
[ 2937.470826] *pde = 00000000
[ 2937.470826] Oops: 0000 [#1] PREEMPT SMP
[ 2937.470826] last sysfs file: /sys/devices/platform/regulatory.0/uevent
[ 2937.470826] Modules linked in: cdc_acm bridge stp rfcomm l2cap bluetooth cgosdrv ov5640 ath6kl_usb ath6kl_core snd_hda_codec_analog cfg80211 mmc_block mt9m114 unicorn(C) v4l2_common videodev snd_hda_intel v4l1_compat snd_hda_codec videobuf_dma_contig sdhci_pci compat videobuf_core i2c_isch snd_hwdep serio_raw sdhci [last unloaded: i2c_serial]
[ 2937.470826]
[ 2937.470826] Pid: 1841, comm: events/0 Tainted: G         C 2.6.33.9-rt31-aldebaran-rt #1 /
[ 2937.470826] EIP: 0060:[<00000000>] EFLAGS: 00010293 CPU: 0
[ 2937.470826] EIP is at 0x0
[ 2937.470826] EAX: f3068000 EBX: f5a3bf2c ECX: f5a3bf2c EDX: f30502c0
[ 2937.470826] ESI: f30687c0 EDI: f30502c0 EBP: f5a3bef4 ESP: f5a3bee8
[ 2937.470826]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 preempt:00000000
[ 2937.470826] Process events/0 (pid: 1841, ti=f5a3a000 task=f512a4b0 task.ti=f5a3a000)
[ 2937.470826] Stack:
[ 2937.470826]  f8d05215 f3992020 f3068000 f5a3bf40 f8d05f11 c1024e18 00000002 f5dc3c40
[ 2937.470826] <0> f5dc3c40 00000246 08a3bf24 0000064a 008d2424 f55f2418 00000000 f30688f8
[ 2937.470826] <0> f5c8de00 f5a3bf2c f5a3bf2c f8d13838 f55f2000 f55f2418 f5a3bf4c f8d131d0
[ 2937.470826] Call Trace:
[ 2937.470826]  [<f8d05215>] ? do_recv_completion+0x2f/0x39 [ath6kl_core]
[ 2937.470826]  [<f8d05f11>] ? ath6kl_htc_pipe_rx_complete+0x2cc/0x31a [ath6kl_core]
[ 2937.470826]  [<c1024e18>] ? finish_task_switch+0x51/0x67
[ 2937.470826]  [<f8d131d0>] ? ath6kl_core_rx_complete+0xd/0x10 [ath6kl_core]
[ 2937.470826]  [<f8d933a9>] ? ath6kl_usb_io_comp_work+0x2d/0x3f [ath6kl_usb]
[ 2937.470826]  [<c103da3b>] ? worker_thread+0x105/0x17c
[ 2937.470826]  [<f8d9337c>] ? ath6kl_usb_io_comp_work+0x0/0x3f [ath6kl_usb]
[ 2937.470826]  [<c104096d>] ? autoremove_wake_function+0x0/0x2f
[ 2937.470826]  [<c103d936>] ? worker_thread+0x0/0x17c
[ 2937.470826]  [<c104069b>] ? kthread+0x5f/0x64
[ 2937.470826]  [<c104063c>] ? kthread+0x0/0x64
[ 2937.470826]  [<c1002db6>] ? kernel_thread_helper+0x6/0x10
[ 2937.470826] Code:  Bad EIP value.
[ 2937.470826] EIP: [<00000000>] 0x0 SS:ESP 0068:f5a3bee8
[ 2937.470826] CR2: 0000000000000000
[ 2937.681695] hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.
[ 2937.684124] ---[ end trace 65e5f4c37e647fa3 ]---