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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1233575 Title: Kernel panic with Magewell USB 3.0 UVC capture device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1233575/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
