dhcpcd-9.4.0 starting dev: loaded udev DUID 00:04:38:86:54:de:e3:84:6f:42:f0:0e:4e:a9:8b:37:24:d9 forked to background, child pid 1204 Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.245' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.046444][ T23] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 43.406544][ T23] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 43.417543][ T23] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 43.427694][ T23] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 43.437966][ T23] usb 1-1: config 0 descriptor?? [ 43.480069][ T23] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input5 [ 43.766435][ T23] rc_core: IR keymap rc-imon-pad not found [ 43.772269][ T23] Registered IR keymap rc-empty [ 43.777327][ T23] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 43.787438][ T23] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 43.937428][ T23] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 43.948759][ T23] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input6 [ 43.966500][ T23] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:2> initialized [ 44.116958][ T1277] [ 44.119428][ T1277] ====================================================== [ 44.126423][ T1277] WARNING: possible circular locking dependency detected [ 44.133433][ T1277] 5.17.0-rc4-syzkaller-00081-ga5d847b0afd3 #0 Not tainted [ 44.140516][ T1277] ------------------------------------------------------ [ 44.147509][ T1277] syz-executor190/1277 is trying to acquire lock: [ 44.153898][ T1277] ffffffff88449ba8 (driver_lock){+.+.}-{3:3}, at: display_open+0x1f/0x220 [ 44.162434][ T1277] [ 44.162434][ T1277] but task is already holding lock: [ 44.169773][ T1277] ffffffff881d50d0 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 [ 44.177934][ T1277] [ 44.177934][ T1277] which lock already depends on the new lock. [ 44.177934][ T1277] [ 44.188323][ T1277] [ 44.188323][ T1277] the existing dependency chain (in reverse order) is: [ 44.197311][ T1277] [ 44.197311][ T1277] -> #2 (minor_rwsem){++++}-{3:3}: [ 44.204580][ T1277] down_write+0x90/0x150 [ 44.209337][ T1277] usb_register_dev+0x19d/0x7e0 [ 44.214687][ T1277] imon_probe+0x2506/0x2b90 [ 44.219690][ T1277] usb_probe_interface+0x315/0x7f0 [ 44.225318][ T1277] really_probe+0x245/0xcc0 [ 44.230321][ T1277] __driver_probe_device+0x338/0x4d0 [ 44.236104][ T1277] driver_probe_device+0x4c/0x1a0 [ 44.241629][ T1277] __device_attach_driver+0x20b/0x2f0 [ 44.247502][ T1277] bus_for_each_drv+0x15f/0x1e0 [ 44.252851][ T1277] __device_attach+0x228/0x4a0 [ 44.258114][ T1277] bus_probe_device+0x1e4/0x290 [ 44.263465][ T1277] device_add+0xb83/0x1e20 [ 44.268377][ T1277] usb_set_configuration+0x101e/0x1900 [ 44.274343][ T1277] usb_generic_driver_probe+0xba/0x100 [ 44.280312][ T1277] usb_probe_device+0xd9/0x2c0 [ 44.285573][ T1277] really_probe+0x245/0xcc0 [ 44.290572][ T1277] __driver_probe_device+0x338/0x4d0 [ 44.296359][ T1277] driver_probe_device+0x4c/0x1a0 [ 44.301885][ T1277] __device_attach_driver+0x20b/0x2f0 [ 44.307755][ T1277] bus_for_each_drv+0x15f/0x1e0 [ 44.313102][ T1277] __device_attach+0x228/0x4a0 [ 44.318365][ T1277] bus_probe_device+0x1e4/0x290 [ 44.323715][ T1277] device_add+0xb83/0x1e20 [ 44.328628][ T1277] usb_new_device.cold+0x63f/0x108e [ 44.334325][ T1277] hub_event+0x2585/0x44d0 [ 44.339239][ T1277] process_one_work+0x9ac/0x1650 [ 44.344675][ T1277] worker_thread+0x657/0x1110 [ 44.349849][ T1277] kthread+0x2ef/0x3a0 [ 44.354415][ T1277] ret_from_fork+0x1f/0x30 [ 44.359332][ T1277] [ 44.359332][ T1277] -> #1 (&ictx->lock){+.+.}-{3:3}: [ 44.366601][ T1277] __mutex_lock+0x12f/0x12f0 [ 44.371690][ T1277] imon_probe+0xff9/0x2b90 [ 44.376608][ T1277] usb_probe_interface+0x315/0x7f0 [ 44.382223][ T1277] really_probe+0x245/0xcc0 [ 44.387270][ T1277] __driver_probe_device+0x338/0x4d0 [ 44.393066][ T1277] driver_probe_device+0x4c/0x1a0 [ 44.398588][ T1277] __device_attach_driver+0x20b/0x2f0 [ 44.404462][ T1277] bus_for_each_drv+0x15f/0x1e0 [ 44.409822][ T1277] __device_attach+0x228/0x4a0 [ 44.415083][ T1277] bus_probe_device+0x1e4/0x290 [ 44.420444][ T1277] device_add+0xb83/0x1e20 [ 44.425357][ T1277] usb_set_configuration+0x101e/0x1900 [ 44.431315][ T1277] usb_generic_driver_probe+0xba/0x100 [ 44.437274][ T1277] usb_probe_device+0xd9/0x2c0 [ 44.442537][ T1277] really_probe+0x245/0xcc0 [ 44.447538][ T1277] __driver_probe_device+0x338/0x4d0 [ 44.453322][ T1277] driver_probe_device+0x4c/0x1a0 [ 44.458843][ T1277] __device_attach_driver+0x20b/0x2f0 [ 44.464712][ T1277] bus_for_each_drv+0x15f/0x1e0 [ 44.470061][ T1277] __device_attach+0x228/0x4a0 [ 44.475331][ T1277] bus_probe_device+0x1e4/0x290 [ 44.480694][ T1277] device_add+0xb83/0x1e20 [ 44.485608][ T1277] usb_new_device.cold+0x63f/0x108e [ 44.491307][ T1277] hub_event+0x2585/0x44d0 [ 44.496224][ T1277] process_one_work+0x9ac/0x1650 [ 44.501663][ T1277] worker_thread+0x657/0x1110 [ 44.506840][ T1277] kthread+0x2ef/0x3a0 [ 44.511408][ T1277] ret_from_fork+0x1f/0x30 [ 44.516326][ T1277] [ 44.516326][ T1277] -> #0 (driver_lock){+.+.}-{3:3}: [ 44.523599][ T1277] __lock_acquire+0x2ad4/0x56c0 [ 44.528977][ T1277] lock_acquire+0x1ab/0x510 [ 44.533991][ T1277] __mutex_lock+0x12f/0x12f0 [ 44.539111][ T1277] display_open+0x1f/0x220 [ 44.544040][ T1277] usb_open+0x204/0x2e0 [ 44.548700][ T1277] chrdev_open+0x266/0x770 [ 44.553617][ T1277] do_dentry_open+0x4b4/0x1110 [ 44.558882][ T1277] path_openat+0x1c9e/0x2940 [ 44.563972][ T1277] do_filp_open+0x1aa/0x400 [ 44.568984][ T1277] do_sys_openat2+0x16d/0x4d0 [ 44.574173][ T1277] __x64_sys_openat+0x13f/0x1f0 [ 44.579523][ T1277] do_syscall_64+0x35/0xb0 [ 44.584440][ T1277] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 44.590848][ T1277] [ 44.590848][ T1277] other info that might help us debug this: [ 44.590848][ T1277] [ 44.601069][ T1277] Chain exists of: [ 44.601069][ T1277] driver_lock --> &ictx->lock --> minor_rwsem [ 44.601069][ T1277] [ 44.613031][ T1277] Possible unsafe locking scenario: [ 44.613031][ T1277] [ 44.620455][ T1277] CPU0 CPU1 [ 44.625796][ T1277] ---- ---- [ 44.631140][ T1277] lock(minor_rwsem); [ 44.635188][ T1277] lock(&ictx->lock); [ 44.641750][ T1277] lock(minor_rwsem); [ 44.648312][ T1277] lock(driver_lock); [ 44.652354][ T1277] [ 44.652354][ T1277] *** DEADLOCK *** [ 44.652354][ T1277] [ 44.660479][ T1277] 1 lock held by syz-executor190/1277: [ 44.665912][ T1277] #0: ffffffff881d50d0 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 [ 44.674503][ T1277] [ 44.674503][ T1277] stack backtrace: [ 44.680372][ T1277] CPU: 1 PID: 1277 Comm: syz-executor190 Not tainted 5.17.0-rc4-syzkaller-00081-ga5d847b0afd3 #0 [ 44.690847][ T1277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.700877][ T1277] Call Trace: [ 44.704144][ T1277] [ 44.707054][ T1277] dump_stack_lvl+0xcd/0x134 [ 44.711631][ T1277] check_noncircular+0x25f/0x2e0 [ 44.716559][ T1277] ? print_circular_bug+0x1e0/0x1e0 [ 44.721749][ T1277] ? lock_chain_count+0x20/0x20 [ 44.726588][ T1277] __lock_acquire+0x2ad4/0x56c0 [ 44.731435][ T1277] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 44.737399][ T1277] ? lockdep_unlock+0x11c/0x290 [ 44.742231][ T1277] ? __lock_acquire+0x25af/0x56c0 [ 44.747236][ T1277] lock_acquire+0x1ab/0x510 [ 44.751723][ T1277] ? display_open+0x1f/0x220 [ 44.756307][ T1277] ? lock_release+0x720/0x720 [ 44.760962][ T1277] ? __lock_acquire+0x1666/0x56c0 [ 44.765966][ T1277] __mutex_lock+0x12f/0x12f0 [ 44.770539][ T1277] ? display_open+0x1f/0x220 [ 44.775109][ T1277] ? lock_release+0x720/0x720 [ 44.779763][ T1277] ? display_open+0x1f/0x220 [ 44.784335][ T1277] ? mutex_lock_io_nested+0x1150/0x1150 [ 44.789863][ T1277] ? down_read+0x198/0x440 [ 44.794266][ T1277] ? chrdev_open+0x58c/0x770 [ 44.798837][ T1277] ? rwsem_down_read_slowpath+0xa70/0xa70 [ 44.804537][ T1277] ? do_raw_spin_lock+0x120/0x2b0 [ 44.809541][ T1277] display_open+0x1f/0x220 [ 44.813939][ T1277] ? display_close+0x160/0x160 [ 44.818685][ T1277] usb_open+0x204/0x2e0 [ 44.822834][ T1277] ? usb_devnode+0xa0/0xa0 [ 44.827232][ T1277] chrdev_open+0x266/0x770 [ 44.831646][ T1277] ? cdev_device_add+0x220/0x220 [ 44.836574][ T1277] ? fsnotify_perm.part.0+0x22d/0x620 [ 44.841930][ T1277] do_dentry_open+0x4b4/0x1110 [ 44.846675][ T1277] ? cdev_device_add+0x220/0x220 [ 44.851594][ T1277] ? may_open+0x1f6/0x420 [ 44.855912][ T1277] path_openat+0x1c9e/0x2940 [ 44.860515][ T1277] ? path_lookupat+0x860/0x860 [ 44.865266][ T1277] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 44.871245][ T1277] do_filp_open+0x1aa/0x400 [ 44.875739][ T1277] ? may_open_dev+0xf0/0xf0 [ 44.880222][ T1277] ? rwlock_bug.part.0+0x90/0x90 [ 44.885140][ T1277] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 44.891364][ T1277] ? _find_next_bit+0x1e3/0x260 [ 44.896198][ T1277] ? _raw_spin_unlock+0x24/0x40 [ 44.901030][ T1277] ? alloc_fd+0x2f0/0x670 [ 44.905349][ T1277] do_sys_openat2+0x16d/0x4d0 [ 44.910009][ T1277] ? build_open_flags+0x6f0/0x6f0 [ 44.915013][ T1277] ? __context_tracking_exit+0xb8/0xe0 [ 44.920452][ T1277] ? lock_downgrade+0x6e0/0x6e0 [ 44.925285][ T1277] __x64_sys_openat+0x13f/0x1f0 [ 44.930117][ T1277] ? __ia32_sys_open+0x1c0/0x1c0 [ 44.935033][ T1277] ? syscall_enter_from_user_mode+0x21/0x70 [ 44.940908][ T1277] do_syscall_64+0x35/0xb0 [ 44.945304][ T1277] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 44.951176][ T1277] RIP: 0033:0x7f02a642afd7 [ 44.955572][ T1277] Code: 25 00 00 41 00 3d 00 00 41 00 74 47 64 8b 04 25 18 00 00 00 85 c0 75 6b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 95 00 00 00 48 8b 4c 24 28 64 48 2b 0c 25 [ 44.975156][ T1277] RSP: 002b:00007ffdf47341e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 44.983566][ T1277] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f02a642afd7 [ 44.991519][ T1277] RDX: 0000000000000002 RSI: 00007ffdf4734260 RDI: 00000000ffffff9c [ 44.999469][ T1277] RBP: 00007ffdf4734260 R08: 0000000000000000 R09: 000000000000000f [ 45.007419][ T1277] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 executing program [ 45.015373][ T1277] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 45.023338][ T1277] [ 45.030950][ T69] usb 1-1: USB disconnect, device number 2 [ 45.436362][ T69] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 45.796463][ T69] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 45.807417][ T69] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 45.816476][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 45.825165][ T69] usb 1-1: config 0 descriptor?? [ 45.867948][ T69] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input7 [ 46.146440][ T69] rc_core: IR keymap rc-imon-pad not found [ 46.152279][ T69] Registered IR keymap rc-empty [ 46.157598][ T69] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 46.167704][ T69] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 46.326844][ T69] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 46.337560][ T69] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input8 [ 46.349896][ T69] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:3> initialized executing program [ 46.507552][ T69] usb 1-1: USB disconnect, device number 3 [ 46.886371][ T69] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 47.246448][ T69] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 47.257395][ T69] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 47.266442][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.276752][ T69] usb 1-1: config 0 descriptor?? [ 47.318268][ T69] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input9 [ 47.596527][ T69] rc_core: IR keymap rc-imon-pad not found [ 47.602376][ T69] Registered IR keymap rc-empty [ 47.607269][ T69] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 47.617534][ T69] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 47.776857][ T69] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 47.787687][ T69] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input10 [ 47.800303][ T69] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:4> initialized executing program [ 47.957669][ T69] usb 1-1: USB disconnect, device number 4 [ 48.326380][ T69] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 48.686482][ T69] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 48.697373][ T69] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 48.706401][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 48.718341][ T69] usb 1-1: config 0 descriptor?? [ 48.758570][ T69] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input11 [ 49.036542][ T69] rc_core: IR keymap rc-imon-pad not found [ 49.042399][ T69] Registered IR keymap rc-empty [ 49.047292][ T69] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 49.057379][ T69] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 49.206643][ T69] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 49.217164][ T69] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input12 [ 49.229081][ T69] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:5> initialized executing program [ 49.387511][ T69] usb 1-1: USB disconnect, device number 5 [ 49.746395][ T69] usb 1-1: new high-speed USB device number 6 using dummy_hcd [ 50.106506][ T69] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 50.117546][ T69] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 50.126587][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.138191][ T69] usb 1-1: config 0 descriptor?? [ 50.193452][ T69] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input13 [ 50.466421][ T69] rc_core: IR keymap rc-imon-pad not found [ 50.472253][ T69] Registered IR keymap rc-empty [ 50.477280][ T69] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 50.487377][ T69] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 50.647909][ T69] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 50.662792][ T69] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input14 [ 50.675731][ T69] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:6> initialized executing program [ 50.827586][ T69] usb 1-1: USB disconnect, device number 6 [ 51.196389][ T69] usb 1-1: new high-speed USB device number 7 using dummy_hcd [ 51.556486][ T69] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 51.567395][ T69] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 51.576427][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 51.588043][ T69] usb 1-1: config 0 descriptor?? [ 51.633614][ T69] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input15 [ 51.896593][ T69] rc_core: IR keymap rc-imon-pad not found [ 51.902426][ T69] Registered IR keymap rc-empty [ 51.907792][ T69] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 51.917898][ T69] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 52.077723][ T69] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 52.088180][ T69] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input16 [ 52.099977][ T69] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:7> initialized executing program [ 52.257668][ T69] usb 1-1: USB disconnect, device number 7 [ 52.626411][ T69] usb 1-1: new high-speed USB device number 8 using dummy_hcd [ 52.986483][ T69] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 52.997527][ T69] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 53.006552][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 53.018823][ T69] usb 1-1: config 0 descriptor?? [ 53.063018][ T69] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input17 [ 53.336379][ T69] rc_core: IR keymap rc-imon-pad not found [ 53.342209][ T69] Registered IR keymap rc-empty [ 53.347475][ T69] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 53.357560][ T69] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol [ 53.517228][ T69] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 53.527711][ T69] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input18 [ 53.539768][ T69] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:8> initialized executing program [ 53.697616][ T69] usb 1-1: USB disconnect, device number 8 [ 54.076380][ T69] usb 1-1: new high-speed USB device number 9 using dummy_hcd