syzkaller login: [ 39.359351][ T2502] cgroup: Unknown subsys name 'net' [ 39.491285][ T2502] cgroup: Unknown subsys name 'rlimit' [ 50.568896][ T2500] can: request_module (can-proto-0) failed. [ 50.596534][ T2500] can: request_module (can-proto-2) failed. [ 50.621241][ T2500] can: request_module (can-proto-0) failed. [ 50.649415][ T2500] can: request_module (can-proto-7) failed. [ 50.676423][ T2500] can: request_module (can-proto-0) failed. [ 50.701504][ T2500] can: request_module (can-proto-1) failed. [ 51.343805][ T2500] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 51.826629][ T2500] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list Warning: Permanently added '10.128.10.20' (ED25519) to the list of known hosts. 2024/01/13 17:06:14 ignoring optional flag "sandboxArg"="0" 2024/01/13 17:06:14 parsed 1 programs 2024/01/13 17:06:14 executed programs: 0 [ 84.263850][ T712] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 84.663903][ T712] usb 1-1: unable to get BOS descriptor or descriptor too short [ 84.743901][ T712] usb 1-1: config 129 has an invalid interface number: 51 but max is 3 [ 84.752536][ T712] usb 1-1: config 129 has an invalid interface association descriptor of length 2, skipping [ 84.762863][ T712] usb 1-1: config 129 has an invalid interface number: 166 but max is 3 [ 84.771382][ T712] usb 1-1: config 129 has an invalid interface descriptor of length 2, skipping [ 84.780491][ T712] usb 1-1: config 129 has an invalid interface number: 36 but max is 3 [ 84.789009][ T712] usb 1-1: config 129 has an invalid interface number: 5 but max is 3 [ 84.797343][ T712] usb 1-1: config 129 contains an unexpected descriptor of type 0x2, skipping [ 84.806552][ T712] usb 1-1: config 129 has no interface number 0 [ 84.812808][ T712] usb 1-1: config 129 has no interface number 1 [ 84.819227][ T712] usb 1-1: config 129 has no interface number 2 [ 84.825742][ T712] usb 1-1: config 129 has no interface number 3 [ 84.832068][ T712] usb 1-1: config 129 interface 51 altsetting 128 endpoint 0x5 has invalid maxpacket 512, setting to 64 [ 84.843453][ T712] usb 1-1: config 129 interface 51 altsetting 128 has a duplicate endpoint with address 0x1, skipping [ 84.854664][ T712] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0xD has invalid maxpacket 59363, setting to 64 [ 84.866383][ T712] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0xC has invalid maxpacket 512, setting to 64 [ 84.877995][ T712] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0xF has an invalid bInterval 129, changing to 11 [ 84.889561][ T712] usb 1-1: config 129 interface 166 altsetting 9 has an invalid endpoint with address 0x80, skipping [ 84.900875][ T712] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0x2 has an invalid bInterval 129, changing to 7 [ 84.912674][ T712] usb 1-1: config 129 interface 166 altsetting 9 has 5 endpoint descriptors, different from the interface descriptor's value: 8 [ 84.926866][ T712] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0xC, skipping [ 84.940006][ T712] usb 1-1: config 129 interface 36 altsetting 3 has an invalid endpoint with address 0x0, skipping [ 84.951269][ T712] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0x2, skipping [ 84.962374][ T712] usb 1-1: config 129 interface 36 altsetting 3 endpoint 0x3 has an invalid bInterval 160, changing to 11 [ 84.974060][ T712] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0xB, skipping [ 84.984929][ T712] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0x2, skipping [ 84.995893][ T712] usb 1-1: config 129 interface 36 altsetting 3 has an invalid endpoint descriptor of length 2, skipping [ 85.007258][ T712] usb 1-1: config 129 interface 36 altsetting 3 endpoint 0x9 has invalid maxpacket 1024, setting to 64 [ 85.018880][ T712] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0x3, skipping [ 85.029844][ T712] usb 1-1: config 129 interface 36 altsetting 3 has 11 endpoint descriptors, different from the interface descriptor's value: 10 [ 85.043478][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x5, skipping [ 85.054638][ T712] usb 1-1: config 129 interface 5 altsetting 1 endpoint 0x8 has an invalid bInterval 252, changing to 11 [ 85.066107][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x5, skipping [ 85.077201][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xD, skipping [ 85.088206][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 85.099039][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 85.109802][ T712] usb 1-1: config 129 interface 5 altsetting 1 has an invalid endpoint with address 0x16, skipping [ 85.122576][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 85.133924][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x9, skipping [ 85.145001][ T712] usb 1-1: config 129 interface 5 altsetting 1 has an invalid endpoint with address 0x0, skipping [ 85.155735][ T712] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x9, skipping [ 85.167448][ T712] usb 1-1: config 129 interface 5 altsetting 1 endpoint 0x7 has invalid maxpacket 495, setting to 64 [ 85.178838][ T712] usb 1-1: config 129 interface 51 has no altsetting 0 [ 85.186268][ T712] usb 1-1: config 129 interface 166 has no altsetting 0 [ 85.193872][ T712] usb 1-1: config 129 interface 36 has no altsetting 0 [ 85.200739][ T712] usb 1-1: config 129 interface 5 has no altsetting 0 [ 85.443705][ T712] usb 1-1: string descriptor 0 read error: -22 [ 85.450062][ T712] usb 1-1: New USB device found, idVendor=129b, idProduct=1667, bcdDevice=1f.c4 [ 85.459757][ T712] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 85.674880][ T712] usb 1-1: reset high-speed USB device number 2 using dummy_hcd 2024/01/13 17:06:26 executed programs: 1 [ 86.713664][ T712] usb 1-1: device descriptor read/64, error -32 [ 87.233898][ T712] usb 1-1: unable to get BOS descriptor or descriptor too short [ 88.436318][ T712] zd1211rw 1-1:129.51: phy0 [ 88.448929][ T712] zd1211rw 1-1:129.51: error ioread32(CR_REG1): -11 [ 88.605767][ T712] usb 1-1: reset high-speed USB device number 2 using dummy_hcd [ 89.563694][ T712] usb 1-1: device descriptor read/64, error -71 [ 90.083913][ T712] usb 1-1: unable to get BOS descriptor or descriptor too short [ 91.278795][ T712] zd1211rw 1-1:129.166: phy1 [ 91.287486][ T712] zd1211rw 1-1:129.51: error ioread32(CR_REG1): -11 [ 91.301708][ T712] [ 91.304072][ T712] ============================================ [ 91.310318][ T712] WARNING: possible recursive locking detected [ 91.316497][ T712] 6.7.0-rc5-syzkaller-00172-g933bb7b878dd #0 Not tainted [ 91.323802][ T712] -------------------------------------------- [ 91.329964][ T712] kworker/0:2/712 is trying to acquire lock: [ 91.335957][ T712] ffff888115dedc10 (&chip->mutex){+.+.}-{3:3}, at: zd_chip_disable_rxtx+0x1f/0x50 [ 91.345338][ T712] [ 91.345338][ T712] but task is already holding lock: [ 91.352802][ T712] ffff8881154c5c10 (&chip->mutex){+.+.}-{3:3}, at: pre_reset+0x209/0x270 [ 91.361284][ T712] [ 91.361284][ T712] other info that might help us debug this: [ 91.369356][ T712] Possible unsafe locking scenario: [ 91.369356][ T712] [ 91.376816][ T712] CPU0 [ 91.380110][ T712] ---- [ 91.383404][ T712] lock(&chip->mutex); [ 91.387580][ T712] lock(&chip->mutex); [ 91.391752][ T712] [ 91.391752][ T712] *** DEADLOCK *** [ 91.391752][ T712] [ 91.399908][ T712] May be due to missing lock nesting notation [ 91.399908][ T712] [ 91.408764][ T712] 6 locks held by kworker/0:2/712: [ 91.413899][ T712] #0: ffff888109a5fd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 [ 91.425101][ T712] #1: ffffc90001e1fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 [ 91.437073][ T712] #2: ffff888105bf9190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 [ 91.446873][ T712] #3: ffff88810a645190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 [ 91.456333][ T712] #4: ffff88810a640160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 [ 91.467011][ T712] #5: ffff8881154c5c10 (&chip->mutex){+.+.}-{3:3}, at: pre_reset+0x209/0x270 [ 91.476550][ T712] [ 91.476550][ T712] stack backtrace: [ 91.482636][ T712] CPU: 0 PID: 712 Comm: kworker/0:2 Not tainted 6.7.0-rc5-syzkaller-00172-g933bb7b878dd #0 [ 91.493421][ T712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 91.503584][ T712] Workqueue: usb_hub_wq hub_event [ 91.508722][ T712] Call Trace: [ 91.512016][ T712] [ 91.514956][ T712] dump_stack_lvl+0xd9/0x1b0 [ 91.519634][ T712] __lock_acquire+0x2973/0x5dd0 [ 91.524519][ T712] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 91.530533][ T712] ? reacquire_held_locks+0x4b0/0x4b0 [ 91.535940][ T712] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 91.541956][ T712] lock_acquire+0x1ae/0x510 [ 91.546496][ T712] ? zd_chip_disable_rxtx+0x1f/0x50 [ 91.551752][ T712] ? lock_sync+0x190/0x190 [ 91.556288][ T712] ? preempt_count_sub+0x150/0x150 [ 91.561448][ T712] __mutex_lock+0x181/0x1340 [ 91.566157][ T712] ? zd_chip_disable_rxtx+0x1f/0x50 [ 91.571497][ T712] ? zd_chip_disable_rxtx+0x1f/0x50 [ 91.576822][ T712] ? __mutex_lock+0x25b/0x1340 [ 91.581703][ T712] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 91.587462][ T712] ? zd_usb_disable_int+0x17a/0x1b0 [ 91.594002][ T712] ? zd_chip_disable_rxtx+0x1f/0x50 [ 91.599340][ T712] zd_chip_disable_rxtx+0x1f/0x50 [ 91.604668][ T712] zd_op_stop+0x64/0x1a0 [ 91.608939][ T712] pre_reset+0x18f/0x270 [ 91.613210][ T712] usb_reset_device+0x41a/0xad0 [ 91.618190][ T712] ? zd_usb_disable_tx+0x170/0x170 [ 91.623421][ T712] probe+0x114/0x970 [ 91.627356][ T712] usb_probe_interface+0x307/0x930 [ 91.632508][ T712] ? usb_match_dynamic_id+0x1a0/0x1a0 [ 91.637966][ T712] really_probe+0x234/0xc90 [ 91.642591][ T712] __driver_probe_device+0x1de/0x4b0 [ 91.647912][ T712] driver_probe_device+0x4c/0x1a0 [ 91.653636][ T712] __device_attach_driver+0x1d4/0x300 [ 91.659842][ T712] ? driver_probe_device+0x1a0/0x1a0 [ 91.665171][ T712] bus_for_each_drv+0x157/0x1d0 [ 91.670147][ T712] ? bus_for_each_dev+0x1d0/0x1d0 [ 91.675206][ T712] ? lockdep_hardirqs_on+0x7d/0x100 [ 91.680533][ T712] ? _raw_spin_unlock_irqrestore+0x3b/0x70 [ 91.686471][ T712] __device_attach+0x1e8/0x4b0 [ 91.691278][ T712] ? device_driver_attach+0x200/0x200 [ 91.696853][ T712] ? do_raw_spin_unlock+0x173/0x230 [ 91.702111][ T712] bus_probe_device+0x17c/0x1c0 [ 91.707051][ T712] device_add+0x117e/0x1aa0 [ 91.711633][ T712] ? __fw_devlink_link_to_consumers.isra.0+0x270/0x270 [ 91.718509][ T712] ? create_intf_ep_devs.isra.0+0x4a/0x200 [ 91.724328][ T712] usb_set_configuration+0x10cb/0x1c40 [ 91.730070][ T712] ? usb_choose_configuration+0x9f0/0x9f0 [ 91.735805][ T712] usb_generic_driver_probe+0xad/0x110 [ 91.741528][ T712] usb_probe_device+0xec/0x350 [ 91.746299][ T712] ? usb_driver_release_interface+0x190/0x190 [ 91.752360][ T712] really_probe+0x234/0xc90 [ 91.756861][ T712] __driver_probe_device+0x1de/0x4b0 [ 91.762140][ T712] ? usb_driver_applicable+0x1c4/0x220 [ 91.767596][ T712] driver_probe_device+0x4c/0x1a0 [ 91.772627][ T712] __device_attach_driver+0x1d4/0x300 [ 91.778006][ T712] ? driver_probe_device+0x1a0/0x1a0 [ 91.783291][ T712] bus_for_each_drv+0x157/0x1d0 [ 91.788153][ T712] ? bus_for_each_dev+0x1d0/0x1d0 [ 91.793546][ T712] ? lockdep_hardirqs_on+0x7d/0x100 [ 91.798864][ T712] ? _raw_spin_unlock_irqrestore+0x3b/0x70 [ 91.804791][ T712] __device_attach+0x1e8/0x4b0 [ 91.809665][ T712] ? device_driver_attach+0x200/0x200 [ 91.815051][ T712] ? do_raw_spin_unlock+0x173/0x230 [ 91.820654][ T712] bus_probe_device+0x17c/0x1c0 [ 91.825598][ T712] device_add+0x117e/0x1aa0 [ 91.830099][ T712] ? __fw_devlink_link_to_consumers.isra.0+0x270/0x270 [ 91.837086][ T712] ? usb_detect_static_quirks+0x335/0x3e0 [ 91.842811][ T712] usb_new_device+0xd80/0x19f0 [ 91.847669][ T712] ? hub_disconnect+0x520/0x520 [ 91.852537][ T712] hub_event+0x2e62/0x4f40 [ 91.857045][ T712] ? hub_port_debounce+0x3d0/0x3d0 [ 91.862142][ T712] ? print_usage_bug.part.0+0x191/0x670 [ 91.867681][ T712] ? lock_sync+0x190/0x190 [ 91.872087][ T712] ? reacquire_held_locks+0x4b0/0x4b0 [ 91.877485][ T712] process_one_work+0x884/0x15c0 [ 91.882624][ T712] ? hcd_died_work+0x60/0x60 [ 91.887215][ T712] ? init_worker_pool+0x770/0x770 [ 91.892358][ T712] ? assign_work+0x1a0/0x240 [ 91.897062][ T712] worker_thread+0x8b9/0x1290 [ 91.901755][ T712] ? __kthread_parkme+0x14b/0x220 [ 91.906797][ T712] ? process_one_work+0x15c0/0x15c0 [ 91.912254][ T712] kthread+0x33c/0x440 [ 91.916407][ T712] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.921604][ T712] ? kthread_complete_and_exit+0x40/0x40 [ 91.927327][ T712] ret_from_fork+0x45/0x80 [ 91.932053][ T712] ? kthread_complete_and_exit+0x40/0x40 [ 91.937792][ T712] ret_from_fork_asm+0x11/0x20 [ 91.942574][ T712] [ 91.953104][ T712] zd1211rw 1-1:129.166: error ioread32(CR_REG1): -11 2024/01/13 17:06:32 executed programs: 3 [ 92.844152][ T712] usb 1-1: reset high-speed USB device number 2 using dummy_hcd [ 93.243824][ T712] usb 1-1: unable to get BOS descriptor or descriptor too short [ 94.404464][ T712] ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' [ 94.424368][ T712] zd1211rw 1-1:129.36: phy2 [ 94.431001][ T712] zd1211rw 1-1:129.51: error ioread32(CR_REG1): -11 [ 94.438465][ T712] zd1211rw 1-1:129.166: error ioread32(CR_REG1): -11 [ 94.445470][ T712] zd1211rw 1-1:129.36: error ioread32(CR_REG1): -11 [ 94.615373][ T712] usb 1-1: reset high-speed USB device number 2 using dummy_hcd [ 95.593596][ T712] usb 1-1: device descriptor read/64, error -71 [ 96.113773][ T712] usb 1-1: unable to get BOS descriptor or descriptor too short [ 97.294471][ T712] ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' [ 97.317226][ T712] zd1211rw 1-1:129.5: phy3 2024/01/13 17:06:38 executed programs: 5 [ 98.851135][ T28] usb 1-1: USB disconnect, device number 2 [ 99.503587][ T28] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 99.903819][ T28] usb 1-1: unable to get BOS descriptor or descriptor too short [ 99.983829][ T28] usb 1-1: config 129 has an invalid interface number: 51 but max is 3 [ 99.992144][ T28] usb 1-1: config 129 has an invalid interface association descriptor of length 2, skipping [ 100.002238][ T28] usb 1-1: config 129 has an invalid interface number: 166 but max is 3 [ 100.010683][ T28] usb 1-1: config 129 has an invalid interface descriptor of length 2, skipping [ 100.020205][ T28] usb 1-1: config 129 has an invalid interface number: 36 but max is 3 [ 100.028699][ T28] usb 1-1: config 129 has an invalid interface number: 5 but max is 3 [ 100.036987][ T28] usb 1-1: config 129 contains an unexpected descriptor of type 0x2, skipping [ 100.046658][ T28] usb 1-1: config 129 has no interface number 0 [ 100.053427][ T28] usb 1-1: config 129 has no interface number 1 [ 100.059786][ T28] usb 1-1: config 129 has no interface number 2 [ 100.066144][ T28] usb 1-1: config 129 has no interface number 3 [ 100.072779][ T28] usb 1-1: config 129 interface 51 altsetting 128 endpoint 0x5 has invalid maxpacket 512, setting to 64 [ 100.084005][ T28] usb 1-1: config 129 interface 51 altsetting 128 has a duplicate endpoint with address 0x1, skipping [ 100.095541][ T28] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0xD has invalid maxpacket 59363, setting to 64 [ 100.106990][ T28] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0xC has invalid maxpacket 512, setting to 64 [ 100.118054][ T28] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0xF has an invalid bInterval 129, changing to 11 [ 100.129457][ T28] usb 1-1: config 129 interface 166 altsetting 9 has an invalid endpoint with address 0x80, skipping [ 100.140870][ T28] usb 1-1: config 129 interface 166 altsetting 9 endpoint 0x2 has an invalid bInterval 129, changing to 7 [ 100.152326][ T28] usb 1-1: config 129 interface 166 altsetting 9 has 5 endpoint descriptors, different from the interface descriptor's value: 8 [ 100.165855][ T28] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0xC, skipping [ 100.177015][ T28] usb 1-1: config 129 interface 36 altsetting 3 has an invalid endpoint with address 0x0, skipping [ 100.188100][ T28] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0x2, skipping [ 100.198889][ T28] usb 1-1: config 129 interface 36 altsetting 3 endpoint 0x3 has an invalid bInterval 160, changing to 11 [ 100.210309][ T28] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0xB, skipping [ 100.221188][ T28] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0x2, skipping [ 100.232532][ T28] usb 1-1: config 129 interface 36 altsetting 3 has an invalid endpoint descriptor of length 2, skipping [ 100.244285][ T28] usb 1-1: config 129 interface 36 altsetting 3 endpoint 0x9 has invalid maxpacket 1024, setting to 64 [ 100.255362][ T28] usb 1-1: config 129 interface 36 altsetting 3 has a duplicate endpoint with address 0x3, skipping [ 100.266409][ T28] usb 1-1: config 129 interface 36 altsetting 3 has 11 endpoint descriptors, different from the interface descriptor's value: 10 [ 100.279883][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x5, skipping [ 100.290781][ T28] usb 1-1: config 129 interface 5 altsetting 1 endpoint 0x8 has an invalid bInterval 252, changing to 11 [ 100.302098][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x5, skipping [ 100.312898][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xD, skipping [ 100.323872][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 100.335009][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 100.345822][ T28] usb 1-1: config 129 interface 5 altsetting 1 has an invalid endpoint with address 0x16, skipping [ 100.356798][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 100.367818][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x9, skipping [ 100.378628][ T28] usb 1-1: config 129 interface 5 altsetting 1 has an invalid endpoint with address 0x0, skipping [ 100.389376][ T28] usb 1-1: config 129 interface 5 altsetting 1 has a duplicate endpoint with address 0x9, skipping [ 100.400258][ T28] usb 1-1: config 129 interface 5 altsetting 1 endpoint 0x7 has invalid maxpacket 495, setting to 64 [ 100.411259][ T28] usb 1-1: config 129 interface 51 has no altsetting 0 [ 100.418512][ T28] usb 1-1: config 129 interface 166 has no altsetting 0 [ 100.425568][ T28] usb 1-1: config 129 interface 36 has no altsetting 0 [ 100.432519][ T28] usb 1-1: config 129 interface 5 has no altsetting 0 [ 100.673864][ T28] usb 1-1: string descriptor 0 read error: -22 [ 100.680290][ T28] usb 1-1: New USB device found, idVendor=129b, idProduct=1667, bcdDevice=1f.c4 [ 100.689402][ T28] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 100.884173][ T28] usb 1-1: reset high-speed USB device number 3 using dummy_hcd