[info] Using makefile-style concurrent boot in runlevel 2. [ 15.233203][ C1] random: crng init done [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.215' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.478510][ T101] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 45.717975][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 45.838075][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 45.847388][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 45.856675][ T101] usb 1-1: config 0 descriptor?? [ 45.909964][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 46.129583][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 46.140710][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 46.149210][ T101] usb 1-1: media controller created [ 46.158310][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 46.183140][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 46.190042][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 46.199886][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 46.217789][ T101] [ 46.220154][ T101] ============================================ [ 46.226296][ T101] WARNING: possible recursive locking detected [ 46.232422][ T101] 5.4.0-syzkaller #0 Not tainted [ 46.237328][ T101] -------------------------------------------- [ 46.243467][ T101] kworker/0:2/101 is trying to acquire lock: [ 46.249432][ T101] ffff8881c83ac208 (i2c_register_adapter){+.+.}, at: i2c_transfer+0x1d3/0x3b0 [ 46.258271][ T101] [ 46.258271][ T101] but task is already holding lock: [ 46.265624][ T101] ffff8881c67de5c0 (i2c_register_adapter){+.+.}, at: i2c_transfer+0x1d3/0x3b0 [ 46.274464][ T101] [ 46.274464][ T101] other info that might help us debug this: [ 46.282522][ T101] Possible unsafe locking scenario: [ 46.282522][ T101] [ 46.289950][ T101] CPU0 [ 46.293219][ T101] ---- [ 46.296485][ T101] lock(i2c_register_adapter); [ 46.301325][ T101] lock(i2c_register_adapter); [ 46.306159][ T101] [ 46.306159][ T101] *** DEADLOCK *** [ 46.306159][ T101] [ 46.314322][ T101] May be due to missing lock nesting notation [ 46.314322][ T101] [ 46.322641][ T101] 7 locks held by kworker/0:2/101: [ 46.327723][ T101] #0: ffff8881d93e5128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 46.337906][ T101] #1: ffff8881d50e7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 46.348580][ T101] #2: ffff8881d55bb200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3860 [ 46.356924][ T101] #3: ffff8881cf92d200 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 [ 46.365615][ T101] #4: ffff8881cf92e190 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 [ 46.374291][ T101] #5: ffff8881cf955180 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 [ 46.383398][ T101] #6: ffff8881c67de5c0 (i2c_register_adapter){+.+.}, at: i2c_transfer+0x1d3/0x3b0 [ 46.392664][ T101] [ 46.392664][ T101] stack backtrace: [ 46.398535][ T101] CPU: 0 PID: 101 Comm: kworker/0:2 Not tainted 5.4.0-syzkaller #0 [ 46.406502][ T101] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.416542][ T101] Workqueue: usb_hub_wq hub_event [ 46.421540][ T101] Call Trace: [ 46.424810][ T101] dump_stack+0xef/0x16e [ 46.429042][ T101] __lock_acquire.cold+0x114/0x288 [ 46.434127][ T101] ? bus_probe_device+0x1e4/0x290 [ 46.439128][ T101] ? device_add+0x1480/0x1c20 [ 46.443798][ T101] ? usb_set_configuration+0xe67/0x1740 [ 46.449317][ T101] ? generic_probe+0x9d/0xd5 [ 46.453880][ T101] ? mark_held_locks+0xe0/0xe0 [ 46.458618][ T101] ? __device_attach_driver+0x1c2/0x220 [ 46.464154][ T101] ? bus_for_each_drv+0x162/0x1e0 [ 46.469166][ T101] ? __device_attach+0x217/0x360 [ 46.474080][ T101] ? bus_probe_device+0x1e4/0x290 [ 46.479108][ T101] ? device_add+0x1480/0x1c20 [ 46.483770][ T101] ? usb_new_device.cold+0x6a4/0xe79 [ 46.489046][ T101] ? hub_event+0x1e59/0x3860 [ 46.493617][ T101] ? process_one_work+0x92b/0x1530 [ 46.498703][ T101] lock_acquire+0x127/0x320 [ 46.503185][ T101] ? i2c_transfer+0x1d3/0x3b0 [ 46.507866][ T101] rt_mutex_lock_nested+0x3e/0x60 [ 46.512871][ T101] ? i2c_transfer+0x1d3/0x3b0 [ 46.517523][ T101] i2c_transfer+0x1d3/0x3b0 [ 46.522005][ T101] tc90522_master_xfer.part.0+0x65c/0xbf0 [ 46.527700][ T101] ? tc90522_probe+0x3e0/0x3e0 [ 46.532547][ T101] ? mark_lock+0xbc/0x1160 [ 46.536938][ T101] ? mark_held_locks+0x9f/0xe0 [ 46.541785][ T101] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 46.547587][ T101] ? lockdep_hardirqs_on+0x382/0x580 [ 46.552862][ T101] ? rt_mutex_slowlock.constprop.0+0x23b/0x3f0 [ 46.558991][ T101] ? __rt_mutex_slowlock+0x290/0x290 [ 46.564260][ T101] ? mark_held_locks+0xe0/0xe0 [ 46.569159][ T101] ? ida_alloc_range+0x5a6/0x7f0 [ 46.574095][ T101] tc90522_master_xfer+0x35/0x4e [ 46.579158][ T101] __i2c_transfer+0x49d/0x1620 [ 46.583904][ T101] i2c_transfer+0x1e6/0x3b0 [ 46.588398][ T101] dvb_pll_attach+0x228/0x850 [ 46.593055][ T101] ? dvb_pll_remove+0x110/0x110 [ 46.597891][ T101] ? kernfs_create_link+0x1bc/0x230 [ 46.603070][ T101] ? dvb_pll_attach+0x850/0x850 [ 46.607898][ T101] dvb_pll_probe+0xfe/0x174 [ 46.612395][ T101] ? i2c_match_id.part.0+0xa8/0xe0 [ 46.617497][ T101] i2c_device_probe+0x74e/0xa40 [ 46.622398][ T101] ? i2c_match_id+0x50/0x50 [ 46.627052][ T101] really_probe+0x281/0x6d0 [ 46.631539][ T101] driver_probe_device+0x104/0x210 [ 46.636926][ T101] __device_attach_driver+0x1c2/0x220 [ 46.642292][ T101] ? driver_allows_async_probing+0x160/0x160 [ 46.648251][ T101] bus_for_each_drv+0x162/0x1e0 [ 46.653093][ T101] ? bus_rescan_devices+0x20/0x20 [ 46.658101][ T101] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 46.663888][ T101] ? lockdep_hardirqs_on+0x382/0x580 [ 46.669251][ T101] __device_attach+0x217/0x360 [ 46.674032][ T101] ? device_bind_driver+0xd0/0xd0 [ 46.679038][ T101] bus_probe_device+0x1e4/0x290 [ 46.683881][ T101] device_add+0x1480/0x1c20 [ 46.688365][ T101] ? lockdep_init_map+0x1b0/0x5e0 [ 46.693366][ T101] ? device_links_flush_sync_list+0x350/0x350 [ 46.699418][ T101] ? __init_waitqueue_head+0x31/0x90 [ 46.704690][ T101] i2c_new_client_device+0x57f/0x9b0 [ 46.709961][ T101] i2c_new_device+0x19/0x50 [ 46.714824][ T101] dvb_module_probe+0xf9/0x220 [ 46.719583][ T101] friio_tuner_attach+0x12b/0x1d0 [ 46.724617][ T101] ? friio_frontend_detach+0xb0/0xb0 [ 46.729881][ T101] ? friio_frontend_detach+0xb0/0xb0 [ 46.735155][ T101] dvb_usbv2_probe.cold+0x2550/0x25d7 [ 46.740508][ T101] ? dvb_usb_start_feed+0xb60/0xb60 [ 46.745681][ T101] ? rpm_callback+0x230/0x230 [ 46.750349][ T101] ? lockdep_hardirqs_on+0x382/0x580 [ 46.755614][ T101] ? __pm_runtime_resume+0x111/0x180 [ 46.760876][ T101] usb_probe_interface+0x305/0x7a0 [ 46.765975][ T101] ? usb_probe_device+0x100/0x100 [ 46.770974][ T101] really_probe+0x281/0x6d0 [ 46.775478][ T101] driver_probe_device+0x104/0x210 [ 46.780627][ T101] __device_attach_driver+0x1c2/0x220 [ 46.785985][ T101] ? driver_allows_async_probing+0x160/0x160 [ 46.791939][ T101] bus_for_each_drv+0x162/0x1e0 [ 46.796769][ T101] ? bus_rescan_devices+0x20/0x20 [ 46.801786][ T101] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 46.807565][ T101] ? lockdep_hardirqs_on+0x382/0x580 [ 46.812822][ T101] __device_attach+0x217/0x360 [ 46.817574][ T101] ? device_bind_driver+0xd0/0xd0 [ 46.822652][ T101] bus_probe_device+0x1e4/0x290 [ 46.827496][ T101] device_add+0x1480/0x1c20 [ 46.831986][ T101] ? wait_for_completion+0x3c0/0x3c0 [ 46.837251][ T101] ? device_links_flush_sync_list+0x350/0x350 [ 46.843307][ T101] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 46.849091][ T101] usb_set_configuration+0xe67/0x1740 [ 46.854454][ T101] generic_probe+0x9d/0xd5 [ 46.858858][ T101] usb_probe_device+0x99/0x100 [ 46.863625][ T101] ? usb_suspend+0x620/0x620 [ 46.868196][ T101] really_probe+0x281/0x6d0 [ 46.872714][ T101] driver_probe_device+0x104/0x210 [ 46.877805][ T101] __device_attach_driver+0x1c2/0x220 [ 46.883303][ T101] ? driver_allows_async_probing+0x160/0x160 [ 46.889265][ T101] bus_for_each_drv+0x162/0x1e0 [ 46.894099][ T101] ? bus_rescan_devices+0x20/0x20 [ 46.899127][ T101] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 46.904927][ T101] ? lockdep_hardirqs_on+0x382/0x580 [ 46.910298][ T101] __device_attach+0x217/0x360 [ 46.915046][ T101] ? device_bind_driver+0xd0/0xd0 [ 46.920051][ T101] bus_probe_device+0x1e4/0x290 [ 46.924896][ T101] device_add+0x1480/0x1c20 [ 46.929379][ T101] ? device_links_flush_sync_list+0x350/0x350 [ 46.935435][ T101] usb_new_device.cold+0x6a4/0xe79 [ 46.940522][ T101] hub_event+0x1e59/0x3860 [ 46.944931][ T101] ? hub_port_debounce+0x260/0x260 [ 46.950028][ T101] ? find_held_lock+0x2d/0x110 [ 46.954781][ T101] ? mark_held_locks+0xe0/0xe0 [ 46.959521][ T101] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 46.965042][ T101] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 46.970303][ T101] process_one_work+0x92b/0x1530 [ 46.975302][ T101] ? pwq_dec_nr_in_flight+0x310/0x310 [ 46.980671][ T101] ? do_raw_spin_lock+0x11a/0x280 [ 46.985881][ T101] worker_thread+0x96/0xe20 [ 46.992413][ T101] ? process_one_work+0x1530/0x1530 [ 46.997637][ T101] kthread+0x318/0x420 [ 47.001829][ T101] ? kthread_create_on_node+0xf0/0xf0 [ 47.007187][ T101] ret_from_fork+0x24/0x30 [ 47.028140][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 47.044431][ T101] usb 1-1: USB disconnect, device number 2 [ 47.397956][ T101] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 47.637941][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 47.758036][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 47.767207][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.776153][ T101] usb 1-1: config 0 descriptor?? [ 47.819207][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 48.038467][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 48.049007][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 48.057259][ T101] usb 1-1: media controller created [ 48.065322][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 48.084705][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 48.090933][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 48.100490][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 48.138045][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 48.155004][ T101] usb 1-1: USB disconnect, device number 3 [ 48.508112][ T101] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 48.747968][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 48.868021][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 48.877078][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 48.885898][ T101] usb 1-1: config 0 descriptor?? [ 48.929142][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 49.138579][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 49.148945][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 49.157426][ T101] usb 1-1: media controller created [ 49.165494][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 49.184062][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 49.190279][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 49.199787][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 49.238190][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 49.255147][ T101] usb 1-1: USB disconnect, device number 4 [ 49.617915][ T101] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 49.857952][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 49.978080][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 49.987136][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.995810][ T101] usb 1-1: config 0 descriptor?? [ 50.039132][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 50.248475][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 50.258843][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 50.267441][ T101] usb 1-1: media controller created [ 50.275471][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 50.294405][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 50.300677][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 50.310195][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 50.348107][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 50.364521][ T101] usb 1-1: USB disconnect, device number 5 [ 50.718105][ T101] usb 1-1: new high-speed USB device number 6 using dummy_hcd [ 50.957952][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 51.078035][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 51.087094][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 51.095759][ T101] usb 1-1: config 0 descriptor?? [ 51.139129][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 51.358489][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 51.369284][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 51.377608][ T101] usb 1-1: media controller created [ 51.385660][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 51.404898][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 51.411169][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 51.420715][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 51.448056][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 51.464863][ T101] usb 1-1: USB disconnect, device number 6 [ 51.827955][ T101] usb 1-1: new high-speed USB device number 7 using dummy_hcd [ 52.067955][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 52.188034][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 52.197222][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 52.205898][ T101] usb 1-1: config 0 descriptor?? [ 52.249136][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 52.458511][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 52.469351][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 52.477755][ T101] usb 1-1: media controller created [ 52.485918][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 52.504546][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 52.510780][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 52.520305][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 52.548089][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 52.564352][ T101] usb 1-1: USB disconnect, device number 7 [ 52.918091][ T101] usb 1-1: new high-speed USB device number 8 using dummy_hcd [ 53.157949][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 53.278032][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 53.287236][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 53.295930][ T101] usb 1-1: config 0 descriptor?? [ 53.339157][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 53.548506][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 53.558915][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 53.567168][ T101] usb 1-1: media controller created [ 53.575293][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 53.594026][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 53.600350][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 53.609914][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 53.638221][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 53.654635][ T101] usb 1-1: USB disconnect, device number 8 [ 54.007954][ T101] usb 1-1: new high-speed USB device number 9 using dummy_hcd [ 54.247943][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 54.368088][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 54.377156][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 54.385889][ T101] usb 1-1: config 0 descriptor?? [ 54.429203][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 54.638504][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 54.649424][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 54.657794][ T101] usb 1-1: media controller created [ 54.665835][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 54.684950][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 54.691252][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 54.700892][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 54.738171][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 54.754983][ T101] usb 1-1: USB disconnect, device number 9 [ 55.108113][ T101] usb 1-1: new high-speed USB device number 10 using dummy_hcd [ 55.347941][ T101] usb 1-1: Using ep0 maxpacket: 8 [ 55.468026][ T101] usb 1-1: New USB device found, idVendor=7a69, idProduct=0001, bcdDevice=19.36 [ 55.477087][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 55.485718][ T101] usb 1-1: config 0 descriptor?? [ 55.539194][ T101] usb 1-1: dvb_usb_v2: found a '774 Friio White ISDB-T USB2.0' in warm state executing program [ 55.748511][ T101] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 55.758867][ T101] dvbdev: DVB: registering new adapter (774 Friio White ISDB-T USB2.0) [ 55.767140][ T101] usb 1-1: media controller created [ 55.775022][ T101] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 55.793437][ T101] tc90522 0-0018: Toshiba TC90522 attached. [ 55.799884][ T101] usb 1-1: DVB: registering adapter 0 frontend 0 (Toshiba TC90522 ISDB-T module)... [ 55.809416][ T101] dvbdev: dvb_create_media_entity: media entity 'Toshiba TC90522 ISDB-T module' registered. [ 55.838024][ T101] dvb_pll: probe of 1-0060 failed with error -12 [ 55.854399][ T101] usb 1-1: USB disconnect, device number 10