Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 18.724249][ C1] random: crng init done [ 18.728760][ C1] random: 7 urandom warning(s) missed due to ratelimiting [ 20.126063][ T313] can: request_module (can-proto-0) failed. [ 20.136164][ T313] can: request_module (can-proto-0) failed. [ 20.146000][ T313] can: request_module (can-proto-7) failed. [ 20.155934][ T313] can: request_module (can-proto-0) failed. Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. 2020/07/22 19:24:29 parsed 1 programs 2020/07/22 19:24:29 executed programs: 0 [ 27.096404][ T473] cgroup: Unknown subsys name 'perf_event' [ 27.096963][ T471] cgroup: Unknown subsys name 'perf_event' [ 27.108472][ T479] cgroup: Unknown subsys name 'perf_event' [ 27.109368][ T475] cgroup: Unknown subsys name 'perf_event' [ 27.116473][ T473] cgroup: Unknown subsys name 'net_cls' [ 27.126783][ T478] cgroup: Unknown subsys name 'perf_event' [ 27.127077][ T480] cgroup: Unknown subsys name 'perf_event' [ 27.132890][ T475] cgroup: Unknown subsys name 'net_cls' [ 27.138778][ T479] cgroup: Unknown subsys name 'net_cls' [ 27.145534][ T478] cgroup: Unknown subsys name 'net_cls' [ 27.153551][ T480] cgroup: Unknown subsys name 'net_cls' [ 27.156939][ T471] cgroup: Unknown subsys name 'net_cls' [ 34.309238][ T69] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 34.409099][ T141] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 34.419647][ T22] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 34.429392][ T131] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 34.430291][ T17] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 34.436924][ T5] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 34.559012][ T69] usb 1-1: Using ep0 maxpacket: 32 [ 34.648997][ T141] usb 4-1: Using ep0 maxpacket: 32 [ 34.659149][ T22] usb 3-1: Using ep0 maxpacket: 32 [ 34.679168][ T17] usb 5-1: Using ep0 maxpacket: 32 [ 34.684476][ T69] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.693734][ T69] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.703928][ T69] usb 1-1: config 0 descriptor?? [ 34.718950][ T5] usb 6-1: Using ep0 maxpacket: 32 [ 34.724195][ T131] usb 2-1: Using ep0 maxpacket: 32 [ 34.779358][ T141] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.788472][ T141] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.797404][ T22] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.806587][ T22] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.816520][ T141] usb 4-1: config 0 descriptor?? [ 34.822684][ T22] usb 3-1: config 0 descriptor?? [ 34.849005][ T17] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.849063][ T131] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.858117][ T17] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.867153][ T131] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.867290][ T5] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.867304][ T5] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.873314][ T5] usb 6-1: config 0 descriptor?? [ 34.895112][ T17] usb 5-1: config 0 descriptor?? [ 34.915803][ T131] usb 2-1: config 0 descriptor?? [ 34.970423][ T69] hso 1-1:0.0: Failed to find BULK IN ep [ 35.089595][ T22] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.097090][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.8.0-rc6-syzkaller #0 [ 35.105223][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.115269][ T22] Workqueue: usb_hub_wq hub_event [ 35.120282][ T22] Call Trace: [ 35.123576][ T22] dump_stack+0xf6/0x16e [ 35.127819][ T22] sysfs_warn_dup.cold+0x1c/0x2d [ 35.132748][ T22] sysfs_do_create_link_sd+0x11e/0x140 [ 35.138190][ T22] sysfs_create_link+0x5f/0xc0 [ 35.142994][ T22] device_add+0x739/0x1c10 [ 35.147427][ T22] ? lockdep_init_map_waits+0x26a/0x7c0 [ 35.152955][ T22] ? device_check_offline+0x280/0x280 [ 35.158309][ T22] ? __init_waitqueue_head+0x97/0x110 [ 35.163668][ T22] ? pm_runtime_init+0x2cf/0x3b0 [ 35.168591][ T22] tty_register_device_attr+0x395/0x7b0 [ 35.172505][ T12] usb 1-1: USB disconnect, device number 2 [ 35.174143][ T22] ? put_tty_driver+0xa0/0xa0 [ 35.184613][ T22] ? mark_held_locks+0x9f/0xe0 [ 35.189386][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.195200][ T22] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.204054][ T22] ? tty_port_register_device_attr+0xbc/0x110 [ 35.210132][ T22] hso_serial_common_create+0x113/0x710 [ 35.215797][ T22] ? kasan_unpoison_shadow+0x33/0x40 [ 35.221061][ T22] hso_probe+0xefa/0x1f61 [ 35.225372][ T22] usb_probe_interface+0x315/0x7f0 [ 35.230463][ T22] ? usb_device_match+0x300/0x300 [ 35.235469][ T22] really_probe+0x291/0xc90 [ 35.239954][ T22] driver_probe_device+0x26b/0x3d0 [ 35.245104][ T22] __device_attach_driver+0x1d1/0x290 [ 35.250529][ T22] ? driver_allows_async_probing+0x150/0x150 [ 35.256542][ T22] bus_for_each_drv+0x15f/0x1e0 [ 35.261479][ T22] ? bus_for_each_dev+0x1d0/0x1d0 [ 35.266530][ T22] __device_attach+0x28d/0x430 [ 35.271275][ T22] ? really_probe+0xc90/0xc90 [ 35.275932][ T22] ? kobject_uevent_env+0x2b4/0x1540 [ 35.281194][ T22] bus_probe_device+0x1e4/0x290 [ 35.286024][ T22] device_add+0xb09/0x1c10 [ 35.290436][ T22] ? device_check_offline+0x280/0x280 [ 35.295812][ T22] ? trace_hardirqs_on+0x5f/0x200 [ 35.300842][ T22] usb_set_configuration+0xf05/0x18a0 [ 35.306205][ T22] usb_generic_driver_probe+0xba/0xf2 [ 35.311571][ T22] usb_probe_device+0xd9/0x250 [ 35.316344][ T22] ? usb_driver_release_interface+0x180/0x180 [ 35.322438][ T22] really_probe+0x291/0xc90 [ 35.326926][ T22] driver_probe_device+0x26b/0x3d0 [ 35.332019][ T22] __device_attach_driver+0x1d1/0x290 [ 35.337398][ T22] ? driver_allows_async_probing+0x150/0x150 [ 35.343358][ T22] bus_for_each_drv+0x15f/0x1e0 [ 35.348187][ T22] ? bus_for_each_dev+0x1d0/0x1d0 [ 35.353198][ T22] __device_attach+0x28d/0x430 [ 35.357952][ T22] ? really_probe+0xc90/0xc90 [ 35.362608][ T22] ? kobject_uevent_env+0x2b4/0x1540 [ 35.367871][ T22] bus_probe_device+0x1e4/0x290 [ 35.372703][ T22] device_add+0xb09/0x1c10 [ 35.377126][ T22] ? device_check_offline+0x280/0x280 [ 35.382497][ T22] ? _raw_spin_unlock_irq+0x1f/0x30 [ 35.387679][ T22] usb_new_device.cold+0x71d/0xfd4 [ 35.392802][ T22] ? hub_disconnect+0x510/0x510 [ 35.397657][ T22] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.403617][ T22] ? trace_hardirqs_on+0x5f/0x200 [ 35.408650][ T22] hub_event+0x2361/0x4390 [ 35.413062][ T22] ? hub_port_debounce+0x3b0/0x3b0 [ 35.418165][ T22] ? perf_trace_workqueue_execute_start+0x251/0x390 [ 35.424739][ T22] ? lock_release+0x7e0/0x7e0 [ 35.429394][ T22] ? lock_downgrade+0x730/0x730 [ 35.434281][ T22] ? do_raw_spin_lock+0x120/0x260 [ 35.439341][ T22] ? _raw_spin_unlock_irq+0x1f/0x30 [ 35.444523][ T22] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.450483][ T22] process_one_work+0x94c/0x15f0 [ 35.455411][ T22] ? lock_release+0x7e0/0x7e0 [ 35.460075][ T22] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 35.465427][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 35.470345][ T22] worker_thread+0x64c/0x1120 [ 35.475006][ T22] ? __kthread_parkme+0x118/0x1d0 [ 35.480059][ T22] ? process_one_work+0x15f0/0x15f0 [ 35.485239][ T22] kthread+0x392/0x470 [ 35.489294][ T22] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 35.495196][ T22] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 35.501085][ T22] ret_from_fork+0x1f/0x30 [ 35.506196][ T17] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.509443][ T5] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.513694][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.8.0-rc6-syzkaller #0 [ 35.529229][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.539276][ T17] Workqueue: usb_hub_wq hub_event [ 35.544365][ T17] Call Trace: [ 35.547640][ T17] dump_stack+0xf6/0x16e [ 35.551866][ T17] sysfs_warn_dup.cold+0x1c/0x2d [ 35.556786][ T17] sysfs_do_create_link_sd+0x11e/0x140 [ 35.562229][ T17] sysfs_create_link+0x5f/0xc0 [ 35.566978][ T17] device_add+0x739/0x1c10 [ 35.571379][ T17] ? lockdep_init_map_waits+0x26a/0x7c0 [ 35.576952][ T17] ? device_check_offline+0x280/0x280 [ 35.582320][ T17] ? __init_waitqueue_head+0x97/0x110 [ 35.587684][ T17] ? pm_runtime_init+0x2cf/0x3b0 [ 35.592610][ T17] tty_register_device_attr+0x395/0x7b0 [ 35.598141][ T17] ? put_tty_driver+0xa0/0xa0 [ 35.602817][ T17] ? mark_held_locks+0x9f/0xe0 [ 35.607566][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.613357][ T17] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.619318][ T17] ? tty_port_register_device_attr+0xbc/0x110 [ 35.625368][ T17] hso_serial_common_create+0x113/0x710 [ 35.630928][ T17] ? kasan_unpoison_shadow+0x33/0x40 [ 35.636218][ T17] hso_probe+0xefa/0x1f61 [ 35.640534][ T17] usb_probe_interface+0x315/0x7f0 [ 35.645629][ T17] ? usb_device_match+0x300/0x300 [ 35.650634][ T17] really_probe+0x291/0xc90 [ 35.655120][ T17] driver_probe_device+0x26b/0x3d0 [ 35.660217][ T17] __device_attach_driver+0x1d1/0x290 [ 35.665682][ T17] ? driver_allows_async_probing+0x150/0x150 [ 35.671641][ T17] bus_for_each_drv+0x15f/0x1e0 [ 35.676472][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 35.681500][ T17] __device_attach+0x28d/0x430 [ 35.686248][ T17] ? really_probe+0xc90/0xc90 [ 35.690931][ T17] ? kobject_uevent_env+0x2b4/0x1540 [ 35.696199][ T17] bus_probe_device+0x1e4/0x290 [ 35.701035][ T17] device_add+0xb09/0x1c10 [ 35.705434][ T17] ? device_check_offline+0x280/0x280 [ 35.710791][ T17] ? trace_hardirqs_on+0x5f/0x200 [ 35.715800][ T17] usb_set_configuration+0xf05/0x18a0 [ 35.721158][ T17] usb_generic_driver_probe+0xba/0xf2 [ 35.726512][ T17] usb_probe_device+0xd9/0x250 [ 35.731259][ T17] ? usb_driver_release_interface+0x180/0x180 [ 35.737324][ T17] really_probe+0x291/0xc90 [ 35.741831][ T17] driver_probe_device+0x26b/0x3d0 [ 35.746925][ T17] __device_attach_driver+0x1d1/0x290 [ 35.752280][ T17] ? driver_allows_async_probing+0x150/0x150 [ 35.758241][ T17] bus_for_each_drv+0x15f/0x1e0 [ 35.763074][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 35.768080][ T17] __device_attach+0x28d/0x430 [ 35.772827][ T17] ? really_probe+0xc90/0xc90 [ 35.777504][ T17] ? kobject_uevent_env+0x2b4/0x1540 [ 35.782773][ T17] bus_probe_device+0x1e4/0x290 [ 35.787609][ T17] device_add+0xb09/0x1c10 [ 35.792015][ T17] ? device_check_offline+0x280/0x280 [ 35.797499][ T17] ? _raw_spin_unlock_irq+0x1f/0x30 [ 35.802679][ T17] usb_new_device.cold+0x71d/0xfd4 [ 35.807773][ T17] ? hub_disconnect+0x510/0x510 [ 35.812607][ T17] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.818572][ T17] ? trace_hardirqs_on+0x5f/0x200 [ 35.823579][ T17] hub_event+0x2361/0x4390 [ 35.828010][ T17] ? hub_port_debounce+0x3b0/0x3b0 [ 35.833109][ T17] ? perf_trace_workqueue_execute_start+0x251/0x390 [ 35.839678][ T17] ? lock_release+0x7e0/0x7e0 [ 35.844365][ T17] ? lock_downgrade+0x730/0x730 [ 35.849197][ T17] ? do_raw_spin_lock+0x120/0x260 [ 35.854218][ T17] ? _raw_spin_unlock_irq+0x1f/0x30 [ 35.859850][ T17] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.865902][ T17] process_one_work+0x94c/0x15f0 [ 35.870823][ T17] ? lock_release+0x7e0/0x7e0 [ 35.875478][ T17] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 35.880830][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 35.885746][ T17] worker_thread+0x64c/0x1120 [ 35.890408][ T17] ? process_one_work+0x15f0/0x15f0 [ 35.895589][ T17] kthread+0x392/0x470 [ 35.899642][ T17] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 35.905544][ T17] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 35.911417][ T17] ret_from_fork+0x1f/0x30 [ 35.915817][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.8.0-rc6-syzkaller #0 [ 35.917177][ T141] hso 4-1:0.0: Failed to find BULK IN ep [ 35.923882][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.923899][ T5] Workqueue: usb_hub_wq hub_event [ 35.923906][ T5] Call Trace: [ 35.923923][ T5] dump_stack+0xf6/0x16e [ 35.923937][ T5] sysfs_warn_dup.cold+0x1c/0x2d [ 35.923948][ T5] sysfs_do_create_link_sd+0x11e/0x140 [ 35.923960][ T5] sysfs_create_link+0x5f/0xc0 [ 35.923974][ T5] device_add+0x739/0x1c10 [ 35.923996][ T5] ? lockdep_init_map_waits+0x26a/0x7c0 [ 35.977183][ T5] ? device_check_offline+0x280/0x280 [ 35.978227][ T17] hso 5-1:0.0: Failed to find BULK IN ep [ 35.982551][ T5] ? __init_waitqueue_head+0x97/0x110 [ 35.982565][ T5] ? pm_runtime_init+0x2cf/0x3b0 [ 35.982581][ T5] tty_register_device_attr+0x395/0x7b0 [ 35.982595][ T5] ? put_tty_driver+0xa0/0xa0 [ 35.982608][ T5] ? mark_held_locks+0x9f/0xe0 [ 35.982626][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.988792][ T22] hso 3-1:0.0: Failed to find BULK IN ep [ 35.993872][ T5] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 35.993888][ T5] ? tty_port_register_device_attr+0xbc/0x110 [ 35.993902][ T5] hso_serial_common_create+0x113/0x710 [ 35.993916][ T5] ? kasan_unpoison_shadow+0x33/0x40 [ 35.993927][ T5] hso_probe+0xefa/0x1f61 [ 35.993943][ T5] usb_probe_interface+0x315/0x7f0 [ 36.005873][ T17] ------------[ cut here ]------------ [ 36.009065][ T5] ? usb_device_match+0x300/0x300 [ 36.009080][ T5] really_probe+0x291/0xc90 [ 36.009093][ T5] driver_probe_device+0x26b/0x3d0 [ 36.009106][ T5] __device_attach_driver+0x1d1/0x290 [ 36.009120][ T5] ? driver_allows_async_probing+0x150/0x150 [ 36.009130][ T5] bus_for_each_drv+0x15f/0x1e0 [ 36.009140][ T5] ? bus_for_each_dev+0x1d0/0x1d0 [ 36.009152][ T5] __device_attach+0x28d/0x430 [ 36.009167][ T5] ? really_probe+0xc90/0xc90 [ 36.009180][ T5] ? kobject_uevent_env+0x2b4/0x1540 [ 36.009191][ T5] bus_probe_device+0x1e4/0x290 [ 36.009203][ T5] device_add+0xb09/0x1c10 [ 36.009220][ T5] ? device_check_offline+0x280/0x280 [ 36.013983][ T17] sysfs group 'power' not found for kobject 'ttyHS0' [ 36.019763][ T5] ? trace_hardirqs_on+0x5f/0x200 [ 36.019777][ T5] usb_set_configuration+0xf05/0x18a0 [ 36.019792][ T5] usb_generic_driver_probe+0xba/0xf2 [ 36.019805][ T5] usb_probe_device+0xd9/0x250 [ 36.019818][ T5] ? usb_driver_release_interface+0x180/0x180 [ 36.019830][ T5] really_probe+0x291/0xc90 [ 36.019848][ T5] driver_probe_device+0x26b/0x3d0 [ 36.025884][ T17] WARNING: CPU: 1 PID: 17 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 [ 36.031844][ T5] __device_attach_driver+0x1d1/0x290 [ 36.031856][ T5] ? driver_allows_async_probing+0x150/0x150 [ 36.031867][ T5] bus_for_each_drv+0x15f/0x1e0 [ 36.031879][ T5] ? bus_for_each_dev+0x1d0/0x1d0 [ 36.031894][ T5] __device_attach+0x28d/0x430 [ 36.037952][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 36.043480][ T5] ? really_probe+0xc90/0xc90 [ 36.219998][ T5] ? kobject_uevent_env+0x2b4/0x1540 [ 36.225263][ T5] bus_probe_device+0x1e4/0x290 [ 36.230098][ T5] device_add+0xb09/0x1c10 [ 36.234499][ T5] ? device_check_offline+0x280/0x280 [ 36.239852][ T5] ? _raw_spin_unlock_irq+0x1f/0x30 [ 36.245134][ T5] usb_new_device.cold+0x71d/0xfd4 [ 36.250230][ T5] ? hub_disconnect+0x510/0x510 [ 36.255061][ T5] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 36.261021][ T5] ? trace_hardirqs_on+0x5f/0x200 [ 36.266026][ T5] hub_event+0x2361/0x4390 [ 36.270428][ T5] ? hub_port_debounce+0x3b0/0x3b0 [ 36.275524][ T5] ? perf_trace_workqueue_execute_start+0x251/0x390 [ 36.282090][ T5] ? lock_release+0x7e0/0x7e0 [ 36.286745][ T5] ? lock_downgrade+0x730/0x730 [ 36.291591][ T5] ? do_raw_spin_lock+0x120/0x260 [ 36.296596][ T5] ? _raw_spin_unlock_irq+0x1f/0x30 [ 36.301776][ T5] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 36.307752][ T5] process_one_work+0x94c/0x15f0 [ 36.312670][ T5] ? lock_release+0x7e0/0x7e0 [ 36.317327][ T5] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 36.322680][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 36.327594][ T5] worker_thread+0x64c/0x1120 [ 36.332253][ T5] ? process_one_work+0x15f0/0x15f0 [ 36.337432][ T5] kthread+0x392/0x470 [ 36.341483][ T5] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 36.347462][ T5] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 36.353335][ T5] ret_from_fork+0x1f/0x30 [ 36.357737][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.8.0-rc6-syzkaller #0 [ 36.358694][ T131] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 36.365877][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.365897][ T17] Workqueue: usb_hub_wq hub_event [ 36.388368][ T17] Call Trace: [ 36.391645][ T17] dump_stack+0xf6/0x16e [ 36.395869][ T17] panic+0x2aa/0x6e1 [ 36.399743][ T17] ? __warn_printk+0xf3/0xf3 [ 36.404328][ T17] ? llist_add_batch+0x6e/0xa0 [ 36.409081][ T17] ? __warn.cold+0x5/0x50 [ 36.413419][ T17] ? __warn+0xd6/0x1f2 [ 36.417478][ T17] ? sysfs_remove_group+0x126/0x170 [ 36.422665][ T17] __warn.cold+0x20/0x50 [ 36.426893][ T17] ? sysfs_remove_group+0x126/0x170 [ 36.432078][ T17] report_bug+0x1bd/0x210 [ 36.436390][ T17] handle_bug+0x41/0x80 [ 36.440529][ T17] exc_invalid_op+0x13/0x40 [ 36.445013][ T17] asm_exc_invalid_op+0x12/0x20 [ 36.449847][ T17] RIP: 0010:sysfs_remove_group+0x126/0x170 [ 36.455638][ T17] Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 37 48 8b 33 48 c7 c7 40 bb 11 86 e8 2c c8 82 ff <0f> 0b eb 98 e8 f1 16 d8 ff e9 01 ff ff ff 48 89 df e8 e4 16 d8 ff [ 36.475222][ T17] RSP: 0018:ffff8881da267000 EFLAGS: 00010282 [ 36.481266][ T17] RAX: 0000000000000000 RBX: ffffffff8637a180 RCX: 0000000000000000 [ 36.489218][ T17] RDX: ffff8881da24b200 RSI: ffffffff8129b723 RDI: ffffed103b44cdf2 [ 36.497170][ T17] RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8881db32f50f [ 36.505120][ T17] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d41a6000 [ 36.513076][ T17] R13: ffffffff8637a720 R14: 0000000000000000 R15: ffff8881d68b6070 [ 36.521040][ T17] ? vprintk_func+0x93/0x133 [ 36.525628][ T17] dpm_sysfs_remove+0x97/0xb0 [ 36.530287][ T17] device_del+0x18b/0xd20 [ 36.534599][ T17] ? device_link_add_missing_supplier_links+0x370/0x370 [ 36.541511][ T17] ? __dev_printk+0xcf/0xf5 [ 36.545996][ T17] device_unregister+0x22/0xc0 [ 36.550743][ T17] device_destroy+0x96/0xd0 [ 36.555251][ T17] ? root_device_unregister+0x60/0x60 [ 36.560602][ T17] ? hso_serial_common_create+0x3a8/0x710 [ 36.566306][ T17] tty_unregister_device+0x7e/0x1b0 [ 36.571484][ T17] hso_probe.cold+0x70/0x179 [ 36.576055][ T17] usb_probe_interface+0x315/0x7f0 [ 36.581145][ T17] ? usb_device_match+0x300/0x300 [ 36.586149][ T17] really_probe+0x291/0xc90 [ 36.590651][ T17] driver_probe_device+0x26b/0x3d0 [ 36.595742][ T17] __device_attach_driver+0x1d1/0x290 [ 36.601112][ T17] ? driver_allows_async_probing+0x150/0x150 [ 36.607071][ T17] bus_for_each_drv+0x15f/0x1e0 [ 36.611902][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 36.616905][ T17] __device_attach+0x28d/0x430 [ 36.621648][ T17] ? really_probe+0xc90/0xc90 [ 36.626324][ T17] ? kobject_uevent_env+0x2b4/0x1540 [ 36.631591][ T17] bus_probe_device+0x1e4/0x290 [ 36.636422][ T17] device_add+0xb09/0x1c10 [ 36.640840][ T17] ? device_check_offline+0x280/0x280 [ 36.646299][ T17] ? trace_hardirqs_on+0x5f/0x200 [ 36.651314][ T17] usb_set_configuration+0xf05/0x18a0 [ 36.656672][ T17] usb_generic_driver_probe+0xba/0xf2 [ 36.662024][ T17] usb_probe_device+0xd9/0x250 [ 36.666770][ T17] ? usb_driver_release_interface+0x180/0x180 [ 36.672817][ T17] really_probe+0x291/0xc90 [ 36.677300][ T17] driver_probe_device+0x26b/0x3d0 [ 36.682393][ T17] __device_attach_driver+0x1d1/0x290 [ 36.687743][ T17] ? driver_allows_async_probing+0x150/0x150 [ 36.693701][ T17] bus_for_each_drv+0x15f/0x1e0 [ 36.698530][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 36.703535][ T17] __device_attach+0x28d/0x430 [ 36.708295][ T17] ? really_probe+0xc90/0xc90 [ 36.712952][ T17] ? kobject_uevent_env+0x2b4/0x1540 [ 36.718216][ T17] bus_probe_device+0x1e4/0x290 [ 36.723048][ T17] device_add+0xb09/0x1c10 [ 36.727446][ T17] ? device_check_offline+0x280/0x280 [ 36.732820][ T17] ? _raw_spin_unlock_irq+0x1f/0x30 [ 36.737998][ T17] usb_new_device.cold+0x71d/0xfd4 [ 36.743093][ T17] ? hub_disconnect+0x510/0x510 [ 36.747928][ T17] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 36.753888][ T17] ? trace_hardirqs_on+0x5f/0x200 [ 36.758893][ T17] hub_event+0x2361/0x4390 [ 36.763291][ T17] ? hub_port_debounce+0x3b0/0x3b0 [ 36.768389][ T17] ? perf_trace_workqueue_execute_start+0x251/0x390 [ 36.774954][ T17] ? lock_release+0x7e0/0x7e0 [ 36.779631][ T17] ? lock_downgrade+0x730/0x730 [ 36.784460][ T17] ? do_raw_spin_lock+0x120/0x260 [ 36.789467][ T17] ? _raw_spin_unlock_irq+0x1f/0x30 [ 36.794647][ T17] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 36.800607][ T17] process_one_work+0x94c/0x15f0 [ 36.805524][ T17] ? lock_release+0x7e0/0x7e0 [ 36.810181][ T17] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 36.815534][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 36.820450][ T17] worker_thread+0x64c/0x1120 [ 36.825108][ T17] ? process_one_work+0x15f0/0x15f0 [ 36.830287][ T17] kthread+0x392/0x470 [ 36.834336][ T17] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 36.840213][ T17] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 36.846102][ T17] ret_from_fork+0x1f/0x30 [ 36.850503][ T131] CPU: 0 PID: 131 Comm: kworker/0:3 Not tainted 5.8.0-rc6-syzkaller #0 [ 36.858759][ T131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.868819][ T131] Workqueue: usb_hub_wq hub_event [ 36.873819][ T131] Call Trace: [ 36.877119][ T131] dump_stack+0xf6/0x16e [ 36.881344][ T131] sysfs_warn_dup.cold+0x1c/0x2d [ 36.886262][ T131] sysfs_do_create_link_sd+0x11e/0x140 [ 36.891698][ T131] sysfs_create_link+0x5f/0xc0 [ 36.896445][ T131] device_add+0x739/0x1c10 [ 36.900844][ T131] ? lockdep_init_map_waits+0x128/0x7c0 [ 36.906459][ T131] ? device_check_offline+0x280/0x280 [ 36.911807][ T131] ? __init_waitqueue_head+0x97/0x110 [ 36.917183][ T131] ? pm_runtime_init+0x2cf/0x3b0 [ 36.922104][ T131] tty_register_device_attr+0x395/0x7b0 [ 36.927630][ T131] ? put_tty_driver+0xa0/0xa0 [ 36.932300][ T131] ? mark_held_locks+0x9f/0xe0 [ 36.937044][ T131] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.942828][ T131] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 36.948814][ T131] ? tty_port_register_device_attr+0xbc/0x110 [ 36.954863][ T131] hso_serial_common_create+0x113/0x710 [ 36.960389][ T131] ? kasan_unpoison_shadow+0x33/0x40 [ 36.965664][ T131] hso_probe+0xefa/0x1f61 [ 36.969974][ T131] usb_probe_interface+0x315/0x7f0 [ 36.975062][ T131] ? usb_device_match+0x300/0x300 [ 36.980064][ T131] really_probe+0x291/0xc90 [ 36.984546][ T131] driver_probe_device+0x26b/0x3d0 [ 36.989636][ T131] __device_attach_driver+0x1d1/0x290 [ 36.994988][ T131] ? driver_allows_async_probing+0x150/0x150 [ 37.000943][ T131] bus_for_each_drv+0x15f/0x1e0 [ 37.005771][ T131] ? bus_for_each_dev+0x1d0/0x1d0 [ 37.010774][ T131] __device_attach+0x28d/0x430 [ 37.015514][ T131] ? really_probe+0xc90/0xc90 [ 37.020184][ T131] ? kobject_uevent_env+0x2b4/0x1540 [ 37.025445][ T131] bus_probe_device+0x1e4/0x290 [ 37.030276][ T131] device_add+0xb09/0x1c10 [ 37.034671][ T131] ? device_check_offline+0x280/0x280 [ 37.040021][ T131] ? trace_hardirqs_on+0x5f/0x200 [ 37.045025][ T131] usb_set_configuration+0xf05/0x18a0 [ 37.050375][ T131] usb_generic_driver_probe+0xba/0xf2 [ 37.055727][ T131] usb_probe_device+0xd9/0x250 [ 37.060474][ T131] ? usb_driver_release_interface+0x180/0x180 [ 37.066518][ T131] really_probe+0x291/0xc90 [ 37.071008][ T131] driver_probe_device+0x26b/0x3d0 [ 37.076098][ T131] __device_attach_driver+0x1d1/0x290 [ 37.081447][ T131] ? driver_allows_async_probing+0x150/0x150 [ 37.087403][ T131] bus_for_each_drv+0x15f/0x1e0 [ 37.092246][ T131] ? bus_for_each_dev+0x1d0/0x1d0 [ 37.097249][ T131] __device_attach+0x28d/0x430 [ 37.101991][ T131] ? really_probe+0xc90/0xc90 [ 37.106648][ T131] ? kobject_uevent_env+0x2b4/0x1540 [ 37.111912][ T131] bus_probe_device+0x1e4/0x290 [ 37.116741][ T131] device_add+0xb09/0x1c10 [ 37.121157][ T131] ? device_check_offline+0x280/0x280 [ 37.126509][ T131] ? _raw_spin_unlock_irq+0x1f/0x30 [ 37.131702][ T131] usb_new_device.cold+0x71d/0xfd4 [ 37.136794][ T131] ? hub_disconnect+0x510/0x510 [ 37.141640][ T131] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 37.147617][ T131] ? trace_hardirqs_on+0x5f/0x200 [ 37.152621][ T131] hub_event+0x2361/0x4390 [ 37.157018][ T131] ? hub_port_debounce+0x3b0/0x3b0 [ 37.162127][ T131] ? perf_trace_workqueue_execute_start+0x251/0x390 [ 37.168693][ T131] ? lock_release+0x7e0/0x7e0 [ 37.173348][ T131] ? lock_downgrade+0x730/0x730 [ 37.178177][ T131] ? do_raw_spin_lock+0x120/0x260 [ 37.183181][ T131] ? _raw_spin_unlock_irq+0x1f/0x30 [ 37.188358][ T131] ? lockdep_hardirqs_on_prepare+0x370/0x550 [ 37.194330][ T131] process_one_work+0x94c/0x15f0 [ 37.199259][ T131] ? lock_release+0x7e0/0x7e0 [ 37.203928][ T131] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 37.209278][ T131] ? rwlock_bug.part.0+0x90/0x90 [ 37.214193][ T131] worker_thread+0x64c/0x1120 [ 37.218866][ T131] ? __kthread_parkme+0x118/0x1d0 [ 37.223867][ T131] ? process_one_work+0x15f0/0x15f0 [ 37.229044][ T131] kthread+0x392/0x470 [ 37.233093][ T131] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 37.238981][ T131] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 37.244852][ T131] ret_from_fork+0x1f/0x30 [ 37.249758][ T17] Kernel Offset: disabled [ 37.254121][ T17] Rebooting in 86400 seconds..