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[Jeremy Powell <1233575@xxxxxxxxxxxxxxxxxx>]

Hi,

Sorry, I used the wrong kernel despite your kindly provided link.

I have installed v3.12-rc3-saucy on some different hardware (Intel H61
Express chipset with ASMedia ASM1042 USB 3.0 controller).  When killing
a process accessing the UVC device, all connected USB devices become
unresponsive with the following output from dmesg:

[   85.822247] xhci_hcd 0000:04:00.0: Signal while waiting for configure endpoint command
[  101.307981] ------------[ cut here ]------------
[  101.307988] WARNING: CPU: 1 PID: 2503 at /home/apw/COD/linux/kernel/watchdog.c:245 watchdog_overflow_callback+0x9a/0xc0()
[  101.307989] Watchdog detected hard LOCKUP on cpu 1
[  101.307990] Modules linked in: joydev usb_storage hid_generic hid_microsoft snd_hda_codec_hdmi snd_hda_codec_realtek snd_usb_audio snd_usbmidi_lib uvcvideo snd_hda_intel snd_hda_codec snd_hwdep snd_pcm videobuf2_vmalloc usbhid videobuf2_memops videobuf2_core videodev hid snd_page_alloc snd_seq_midi snd_seq_midi_event ftdi_sio usbserial rfcomm bnep snd_rawmidi bluetooth parport_pc ppdev snd_seq snd_seq_device snd_timer mac_hid i915 video drm_kms_helper snd mei_me drm mei lpc_ich soundcore i2c_algo_bit lp parport ahci libahci r8169 mii
[  101.308021] CPU: 1 PID: 2503 Comm: source:src Not tainted 3.12.0-031200rc3-generic #201309291835
[  101.308022] Hardware name: Shuttle Inc. DS61/FS61, BIOS 2.03 01/09/2013
[  101.308024]  00000000000000f5 ffff880100307ba8 ffffffff81747b27 0000000000000007
[  101.308027]  ffff880100307bf8 ffff880100307be8 ffffffff8106759c 0000000000000000
[  101.308029]  ffff880071c04000 0000000000000000 ffff880100307d20 0000000000000000
[  101.308031] Call Trace:
[  101.308033]  <NMI>  [<ffffffff81747b27>] dump_stack+0x46/0x58
[  101.308041]  [<ffffffff8106759c>] warn_slowpath_common+0x8c/0xc0
[  101.308044]  [<ffffffff81067686>] warn_slowpath_fmt+0x46/0x50
[  101.308046]  [<ffffffff81107eda>] watchdog_overflow_callback+0x9a/0xc0
[  101.308050]  [<ffffffff811457bc>] __perf_event_overflow+0x9c/0x230
[  101.308054]  [<ffffffff8102acb8>] ? x86_perf_event_set_period+0xd8/0x150
[  101.308057]  [<ffffffff811460c4>] perf_event_overflow+0x14/0x20
[  101.308059]  [<ffffffff8103251e>] intel_pmu_handle_irq+0x1ae/0x2a0
[  101.308063]  [<ffffffff81757184>] perf_event_nmi_handler+0x34/0x60
[  101.308065]  [<ffffffff817568da>] nmi_handle.isra.3+0x8a/0x1a0
[  101.308067]  [<ffffffff81757200>] ? perf_ibs_nmi_handler+0x50/0x50
[  101.308069]  [<ffffffff81756b69>] default_do_nmi+0xe9/0x240
[  101.308072]  [<ffffffff81756d50>] do_nmi+0x90/0xd0
[  101.308074]  [<ffffffff81755cc1>] end_repeat_nmi+0x1e/0x2e
[  101.308077]  [<ffffffff81580cb2>] ? xhci_handshake+0x22/0x70
[  101.308079]  [<ffffffff81580cb2>] ? xhci_handshake+0x22/0x70
[  101.308081]  [<ffffffff81580cb2>] ? xhci_handshake+0x22/0x70
[  101.308082]  <<EOE>>  [<ffffffff8158bf7b>] xhci_abort_cmd_ring+0xbb/0x140
[  101.308088]  [<ffffffff8158dff5>] xhci_cancel_cmd+0xd5/0x170
[  101.308090]  [<ffffffff8158377c>] xhci_configure_endpoint+0x32c/0x470
[  101.308092]  [<ffffffff815841de>] xhci_check_bandwidth+0xee/0x280
[  101.308096]  [<ffffffff81557113>] usb_hcd_alloc_bandwidth+0x2b3/0x340
[  101.308099]  [<ffffffff810537de>] ? x86_swiotlb_free_coherent+0xe/0x10
[  101.308102]  [<ffffffff8155f531>] ? hcd_buffer_free+0x81/0x100
[  101.308104]  [<ffffffff8155a658>] usb_set_interface+0x98/0x340
[  101.308109]  [<ffffffffa039fa54>] ? uvc_free_urb_buffers+0x44/0x70 [uvcvideo]
[  101.308112]  [<ffffffffa03a21c4>] uvc_video_enable+0xb4/0x120 [uvcvideo]
[  101.308115]  [<ffffffffa039d20a>] uvc_v4l2_release+0xca/0x110 [uvcvideo]
[  101.308120]  [<ffffffffa02ce45d>] v4l2_release+0x3d/0x80 [videodev]
[  101.308124]  [<ffffffff811be66a>] __fput+0xba/0x240
[  101.308126]  [<ffffffff811be83e>] ____fput+0xe/0x10
[  101.308129]  [<ffffffff81088864>] task_work_run+0xc4/0xe0
[  101.308132]  [<ffffffff8106a252>] do_exit+0x192/0x460
[  101.308134]  [<ffffffff8106a5b4>] do_group_exit+0x44/0xa0
[  101.308137]  [<ffffffff8107aa90>] get_signal_to_deliver+0x230/0x590
[  101.308141]  [<ffffffff81014c67>] do_signal+0x47/0x140
[  101.308144]  [<ffffffff81014e02>] do_notify_resume+0xa2/0xd0
[  101.308147]  [<ffffffff8175e56a>] int_signal+0x12/0x17
[  101.308148] ---[ end trace c4ff0115afc760b1 ]---
[  101.530410] xhci_hcd 0000:04:00.0: Stopped the command ring failed, maybe the host is dead
[  101.530427] xhci_hcd 0000:04:00.0: Abort command ring failed
[  101.530913] xhci_hcd 0000:04:00.0: HC died; cleaning up
[  101.530922] usb 4-1: Not enough bandwidth for altsetting 0
[  101.532646] [sched_delayed] sched: RT throttling activated
[  101.536666] usb 3-2: USB disconnect, device number 2
[  101.536786] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[  101.536798] ftdi_sio 3-2:1.0: device disconnected
[  101.539578] usb 4-1: USB disconnect, device number 2

I'll re-test with the original hardware with v3.12-rc3-saucy, see if
there is any difference.

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https://bugs.launchpad.net/bugs/1233575

Title:
  Kernel panic with Magewell USB 3.0 UVC capture device

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  A kernel panic can occur when using a Magewell USB 3.0 UVC video
  capture device. It frequently occurs when killing a process using the
  device with SIGTERM.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-31-generic 3.8.0-31.46
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  jeremy     2178 F.... pulseaudio
   /dev/snd/controlC0:  jeremy     2178 F.... pulseaudio
   /dev/snd/controlC1:  jeremy     2178 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Date: Tue Oct  1 10:24:06 2013
  InstallationDate: Installed on 2013-07-31 (61 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
  MarkForUpload: True
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-31-generic root=UUID=1ed8a421-e1ce-4c23-8c7b-a334d9b30b28 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-31-generic N/A
   linux-backports-modules-3.8.0-31-generic  N/A
   linux-firmware                            1.106
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/24/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F16
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z77X-D3H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF16:bd10/24/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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