kernel-bug-exists-upstream
uname -a
Linux yoda 3.12.4-031204-generic #201312081207 SMP Sun Dec 8 17:08:59 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
There is not system freeze, but the driver becomes unusable once the usb
cable is unplugged.
relevant kern.log
Dec 10 23:22:31 yoda kernel: [ 65.979908] usb 2-1: USB disconnect, device
number 2
Dec 10 23:22:32 yoda kernel: [ 65.980151] usbvision_disconnect: In use,
disconnect pending
Dec 10 23:22:32 yoda kernel: [ 65.980168] BUG: unable to handle kernel NULL
pointer dereference at (null)
Dec 10 23:22:32 yoda kernel: [ 65.981072] IP: [<ffffffff81095c0a>]
__wake_up_common+0x2a/0x90
Dec 10 23:22:32 yoda kernel: [ 65.981711] PGD 0
Dec 10 23:22:32 yoda kernel: [ 65.981914] Oops: 0000 [#1] SMP
Dec 10 23:22:32 yoda kernel: [ 65.982250] Modules linked in: saa7115
usbvision v4l2_common joydev snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_intel snd_hda_codec snd_hwdep parport_pc snd_pcm rfcomm ppdev bnep
snd_seq_midi arc4 asus_nb_wmi snd_rawmidi asus_wmi ath9k sparse_keymap
snd_seq_midi_event snd_seq snd_timer uvcvideo mac80211 snd_seq_device ath3k
btusb videobuf2_core asix usbnet bluetooth videodev rts5139(C) psmouse
ath9k_common ath9k_hw videobuf2_vmalloc mii videobuf2_memops serio_raw ath snd
soundcore snd_page_alloc mac_hid cfg80211 mei_me mei lpc_ich coretemp lp
parport i915 wmi drm_kms_helper drm i2c_algo_bit video ahci libahci
Dec 10 23:22:32 yoda kernel: [ 65.988219] CPU: 3 PID: 67 Comm: khubd Tainted:
G C 3.12.4-031204-generic #201312081207
Dec 10 23:22:32 yoda kernel: [ 65.989193] Hardware name: ASUSTeK Computer
Inc. UX31E/UX31E, BIOS UX31E.211 01/20/2012
Dec 10 23:22:32 yoda kernel: [ 65.990092] task: ffff880138feaf60 ti:
ffff880138a6a000 task.ti: ffff880138a6a000
Dec 10 23:22:32 yoda kernel: [ 65.990891] RIP: 0010:[<ffffffff81095c0a>]
[<ffffffff81095c0a>] __wake_up_common+0x2a/0x90
Dec 10 23:22:32 yoda kernel: [ 65.991791] RSP: 0018:ffff880138a6bae8 EFLAGS:
00010096
Dec 10 23:22:32 yoda kernel: [ 65.992355] RAX: 0000000000000282 RBX:
ffff8800b1e235b0 RCX: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.993138] RDX: 0000000000000000 RSI:
0000000000000001 RDI: ffff8800b1e235b0
Dec 10 23:22:32 yoda kernel: [ 65.993950] RBP: ffff880138a6bb28 R08:
0000000000000000 R09: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.994711] R10: 0000000000000397 R11:
0000000000000396 R12: 0000000000000282
Dec 10 23:22:32 yoda kernel: [ 65.995472] R13: ffff8800b1e235b8 R14:
0000000000000000 R15: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.996232] FS: 0000000000000000(0000)
GS:ffff88013f460000(0000) knlGS:0000000000000000
Dec 10 23:22:32 yoda kernel: [ 65.997096] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Dec 10 23:22:32 yoda kernel: [ 65.997705] CR2: 0000000000000000 CR3:
0000000001c0d000 CR4: 00000000000407e0
Dec 10 23:22:32 yoda kernel: [ 65.998465] Stack:
Dec 10 23:22:32 yoda kernel: [ 65.998667] ffff8800b1e234b8 0000000100000001
ffffffffa05ce1e8 ffff8800b1e235b0
Dec 10 23:22:32 yoda kernel: [ 65.999459] 0000000000000282 0000000000000001
0000000000000001 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 66.000277] ffff880138a6bb68 ffffffff81096c28
ffff8800b1e23000 ffff8800b1e23000
Dec 10 23:22:32 yoda kernel: [ 66.001102] Call Trace:
Dec 10 23:22:32 yoda kernel: [ 66.001367] [<ffffffff81096c28>]
__wake_up+0x48/0x70
Dec 10 23:22:32 yoda kernel: [ 66.001928] [<ffffffffa05c6621>]
usbvision_disconnect+0x131/0x150 [usbvision]
Dec 10 23:22:32 yoda kernel: [ 66.002718] [<ffffffff81565bd0>]
usb_unbind_interface+0x60/0x1b0
Dec 10 23:22:32 yoda kernel: [ 66.003369] [<ffffffff814ad63f>]
__device_release_driver+0x7f/0xf0
Dec 10 23:22:32 yoda kernel: [ 66.004038] [<ffffffff814ad6dc>]
device_release_driver+0x2c/0x40
Dec 10 23:22:32 yoda kernel: [ 66.004688] [<ffffffff814acfe4>]
bus_remove_device+0x104/0x170
Dec 10 23:22:32 yoda kernel: [ 66.005318] [<ffffffff814a9f56>]
device_del+0x126/0x1b0
Dec 10 23:22:32 yoda kernel: [ 66.005882] [<ffffffff815633e0>]
usb_disable_device+0xb0/0x280
Dec 10 23:22:32 yoda kernel: [ 66.006512] [<ffffffff81558452>]
usb_disconnect+0xb2/0x210
Dec 10 23:22:32 yoda kernel: [ 66.007124] [<ffffffff8156281a>] ?
usb_control_msg+0xea/0x110
Dec 10 23:22:32 yoda kernel: [ 66.007772] [<ffffffff8155acaf>]
hub_port_connect_change+0xcf/0x9c0
Dec 10 23:22:32 yoda kernel: [ 66.008469] [<ffffffff8156281a>] ?
usb_control_msg+0xea/0x110
Dec 10 23:22:32 yoda kernel: [ 66.009107] [<ffffffff8155b8c8>]
hub_events+0x328/0x870
Dec 10 23:22:32 yoda kernel: [ 66.009695] [<ffffffff810a13bd>] ?
vtime_common_task_switch+0x3d/0x50
Dec 10 23:22:32 yoda kernel: [ 66.010419] [<ffffffff8155be45>]
hub_thread+0x35/0x160
Dec 10 23:22:32 yoda kernel: [ 66.011010] [<ffffffff8108d380>] ?
add_wait_queue+0x60/0x60
Dec 10 23:22:32 yoda kernel: [ 66.011611] [<ffffffff8155be10>] ?
hub_events+0x870/0x870
Dec 10 23:22:32 yoda kernel: [ 66.012194] [<ffffffff8108c820>]
kthread+0xc0/0xd0
Dec 10 23:22:32 yoda kernel: [ 66.012711] [<ffffffff8108c760>] ?
flush_kthread_worker+0xb0/0xb0
Dec 10 23:22:32 yoda kernel: [ 66.013395] [<ffffffff81759a7c>]
ret_from_fork+0x7c/0xb0
Dec 10 23:22:32 yoda kernel: [ 66.044742] [<ffffffff8108c760>] ?
flush_kthread_worker+0xb0/0xb0
Dec 10 23:22:32 yoda kernel: [ 66.076765] Code: 00 66 66 66 66 90 55 48 89 e5
41 57 41 89 cf 41 56 4d 89 c6 41 55 4c 8d 6f 08 41 54 53 48 83 ec 18 89 55 c8
48 8b 57 08 89 75 cc <48> 8b 1a 48 8d 42 e8 48 83 eb 18 49 39 d5 75 0c eb 3d 0f
1f 40
Dec 10 23:22:32 yoda kernel: [ 66.142538] RIP [<ffffffff81095c0a>]
__wake_up_common+0x2a/0x90
Dec 10 23:22:32 yoda kernel: [ 66.175156] RSP <ffff880138a6bae8>
Dec 10 23:22:32 yoda kernel: [ 66.205440] CR2: 0000000000000000
Dec 10 23:22:32 yoda kernel: [ 66.436678] ---[ end trace b5d4927cb7bffbb2 ]---
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1259670
Title:
v4l2 does not support Dazzle Fusion Model DVC-80 Rev 1 + system freeze
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