https://bugzilla.novell.com/show_bug.cgi?id=727248
https://bugzilla.novell.com/show_bug.cgi?id=727248#c1
--- Comment #1 from Pavol Rusnak 2011-10-30 21:12:00 CET ---
Relevant output from /var/log/messages:
Oct 30 20:58:09 mitra kernel: [ 722.060146] usb 1-5: USB disconnect, device
number 3
Oct 30 20:58:09 mitra kernel: [ 722.060452] BUG: unable to handle kernel NULL
pointer dereference at 00000064
Oct 30 20:58:09 mitra kernel: [ 722.060475] IP: [<f9294c52>]
v4l2_device_release+0xa2/0xf0 [videodev]
Oct 30 20:58:09 mitra kernel: [ 722.060499] *pde = 00000000
Oct 30 20:58:09 mitra kernel: [ 722.060509] Oops: 0000 [#1] SMP
Oct 30 20:58:09 mitra kernel: [ 722.060521] Modules linked in: snd_usb_audio
snd_usbmidi_lib gspca_ov534 gspca_main videodev fuse af_packet vboxpci
vboxnetadp vboxnetflt vboxdrv vmsync vmblock microcode snd_pcm_oss
cpufreq_conservative cpufreq_userspace snd_mixer_oss cpufreq_powersave snd_seq
acpi_cpufreq mperf sha256_generic cbc edd dm_crypt dm_mod loop hdj_mod
snd_rawmidi snd_seq_device pcmcia sg snd_hda_codec_analog arc4 firewire_ohci
sdhci_pci sdhci firewire_core mmc_core crc_itu_t yenta_socket pcmcia_rsrc
pcmcia_core iwl3945 iwl_legacy mac80211 thinkpad_acpi iTCO_wdt
iTCO_vendor_support snd_hda_intel pcspkr snd_hda_codec cfg80211 i2c_i801
snd_hwdep snd_pcm rfkill e1000e battery ac nsc_ircc snd_timer snd
snd_page_alloc tpm_tis irda tpm soundcore crc_ccitt tpm_bios ata_generic
uhci_hcd rtc_cmos ata_piix i915 ehci_hcd drm_kms_helper drm i2c_algo_bit button
i2c_core libata video usbcore fan thermal processor thermal_sys hwmon
Oct 30 20:58:09 mitra kernel: [ 722.060738]
Oct 30 20:58:09 mitra kernel: [ 722.060747] Pid: 129, comm: khubd Not tainted
3.1.0-rc9-1-default #1 LENOVO 6363A12/6363A12
Oct 30 20:58:09 mitra kernel: [ 722.060766] EIP: 0060:[<f9294c52>] EFLAGS:
00010203 CPU: 0
Oct 30 20:58:09 mitra kernel: [ 722.060782] EIP is at
v4l2_device_release+0xa2/0xf0 [videodev]
Oct 30 20:58:09 mitra kernel: [ 722.060793] EAX: f92a6000 EBX: e7d0e004 ECX:
f4c014e0 EDX: 00000000
Oct 30 20:58:09 mitra kernel: [ 722.060804] ESI: e7d0e000 EDI: 00000000 EBP:
f713bddc ESP: f713bd94
Oct 30 20:58:09 mitra kernel: [ 722.060816] DS: 007b ES: 007b FS: 00d8 GS:
0000 SS: 0068
Oct 30 20:58:09 mitra kernel: [ 722.060827] Process khubd (pid: 129,
ti=f713a000 task=f70ef2c0 task.ti=f713a000)
Oct 30 20:58:09 mitra kernel: [ 722.060838] Stack:
Oct 30 20:58:09 mitra kernel: [ 722.060845] f0cec240 c09e3c80 f0dac2a0
c0505318 f713bde8 c044c17a e7d0e00c e7d0e00c
Oct 30 20:58:09 mitra kernel: [ 722.060867] e7d0e00c c044ab58 c0505d38
e7d0e004 e7d0e004 f7150400 c0505d8c e7d0e028
Oct 30 20:58:09 mitra kernel: [ 722.060889] c044ac90 f8dd9034 00000000
c044c17a f715041c f7150400 f82ae084 f0ec6c00
Oct 30 20:58:09 mitra kernel: [ 722.060911] Call Trace:
Oct 30 20:58:09 mitra kernel: [ 722.060956] [<c0505318>]
device_release+0x18/0x80
Oct 30 20:58:09 mitra kernel: [ 722.060975] [<c044ab58>]
kobject_cleanup+0x78/0x1b0
Oct 30 20:58:09 mitra kernel: [ 722.060992] [<c044c17a>] kref_put+0x2a/0x60
Oct 30 20:58:09 mitra kernel: [ 722.061030] [<f82ae084>]
usb_unbind_interface+0x34/0x130 [usbcore]
Oct 30 20:58:09 mitra kernel: [ 722.061111] [<c05086c7>]
__device_release_driver+0x57/0xb0
Oct 30 20:58:09 mitra kernel: [ 722.061127] [<c050873d>]
device_release_driver+0x1d/0x30
Oct 30 20:58:09 mitra kernel: [ 722.061141] [<c0508204>]
bus_remove_device+0x64/0xd0
Oct 30 20:58:09 mitra kernel: [ 722.061157] [<c0505cff>]
device_del+0xdf/0x150
Oct 30 20:58:09 mitra kernel: [ 722.061190] [<f82abf96>]
usb_disable_device+0x96/0x220 [usbcore]
Oct 30 20:58:09 mitra kernel: [ 722.061273] [<f82a5210>]
usb_disconnect+0xa0/0x170 [usbcore]
Oct 30 20:58:09 mitra kernel: [ 722.061326] [<f82a6122>]
hub_port_connect_change+0xa2/0x7d0 [usbcore]
Oct 30 20:58:09 mitra kernel: [ 722.061383] [<f82a6b90>]
hub_events+0x340/0x7f0 [usbcore]
Oct 30 20:58:09 mitra kernel: [ 722.061440] [<f82a7065>]
hub_thread+0x25/0x170 [usbcore]
Oct 30 20:58:09 mitra kernel: [ 722.061483] [<c02618c9>] kthread+0x69/0x70
Oct 30 20:58:09 mitra kernel: [ 722.061501] [<c0689b66>]
kernel_thread_helper+0x6/0xd
Oct 30 20:58:09 mitra kernel: [ 722.061513] Code: 83 8c 01 00 00 c7 83 58 01
00 00 00 00 00 00 0f b7 93 94 01 00 00 c1 e0 05 f0 0f b3 90 c0 66 2a f9 b8 00
60 2a f9 e8 2e c8 3e c7 <8b> 57 64 89 f0 85 d2 74 25 ff 93 c0 01 00 00 85 ff 74
21 89 f8
Oct 30 20:58:09 mitra kernel: [ 722.061614] EIP: [<f9294c52>]
v4l2_device_release+0xa2/0xf0 [videodev] SS:ESP 0068:f713bd94
Oct 30 20:58:09 mitra kernel: [ 722.061636] CR2: 0000000000000064
Oct 30 20:58:09 mitra kernel: [ 722.190285] ---[ end trace 2a3eef13469b5818
]---
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