INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] 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 '10.128.0.179' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 56.278150][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 56.288163][ T5] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 56.295924][ T95] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 56.303477][ T1809] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 56.308106][ T17] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 56.310993][ T12] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 56.368382][ T83] usb 1-1: Using ep0 maxpacket: 32 [ 56.398434][ T12] usb 5-1: Using ep0 maxpacket: 32 [ 56.403830][ T95] usb 6-1: Using ep0 maxpacket: 32 [ 56.409261][ T1809] usb 2-1: Using ep0 maxpacket: 32 [ 56.414507][ T5] usb 3-1: Using ep0 maxpacket: 32 [ 56.418702][ T17] usb 4-1: Using ep0 maxpacket: 32 [ 56.488305][ T83] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 56.497610][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.507133][ T83] usb 1-1: config 0 descriptor?? [ 56.518531][ T12] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 56.527864][ T12] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.536636][ T1809] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 56.545821][ T1809] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.554165][ T95] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 56.558240][ T17] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 56.563422][ T95] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.563516][ T5] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 56.572644][ T17] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.580684][ T5] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.593723][ T17] usb 4-1: config 0 descriptor?? [ 56.612109][ T95] usb 6-1: config 0 descriptor?? [ 56.618136][ T12] usb 5-1: config 0 descriptor?? [ 56.624851][ T1809] usb 2-1: config 0 descriptor?? [ 56.631146][ T5] usb 3-1: config 0 descriptor?? [ 56.799453][ T83] hso 1-1:0.0: Failed to find BULK IN ep [ 56.878852][ T17] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 56.879078][ T12] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 56.886373][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.6.0-rc1-syzkaller #0 [ 56.902224][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.912572][ T17] Workqueue: usb_hub_wq hub_event [ 56.917606][ T17] Call Trace: [ 56.920999][ T17] dump_stack+0xef/0x16e [ 56.925260][ T17] sysfs_warn_dup.cold+0x1c/0x2d [ 56.930198][ T17] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 56.936281][ T17] sysfs_create_link+0x61/0xc0 [ 56.941077][ T17] device_add+0x756/0x1bf0 [ 56.945502][ T17] ? lockdep_init_map+0x1b0/0x5e0 [ 56.950538][ T17] ? device_link_remove+0x110/0x110 [ 56.955765][ T17] ? __init_waitqueue_head+0x31/0x90 [ 56.961243][ T17] tty_register_device_attr+0x341/0x6f0 [ 56.966824][ T17] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 56.972388][ T17] ? mark_held_locks+0x9f/0xe0 [ 56.977426][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 56.983261][ T17] ? tty_port_register_device_attr+0xb9/0x110 [ 56.989353][ T17] hso_serial_common_create+0x113/0x710 [ 56.994909][ T17] ? kasan_unpoison_shadow+0x30/0x40 [ 57.000202][ T17] hso_probe+0xc93/0x1b7b [ 57.004643][ T17] usb_probe_interface+0x310/0x800 [ 57.009786][ T17] ? usb_probe_device+0x140/0x140 [ 57.014817][ T17] really_probe+0x290/0xac0 [ 57.019370][ T17] driver_probe_device+0x223/0x350 [ 57.024485][ T17] __device_attach_driver+0x1d1/0x290 [ 57.029867][ T17] ? driver_allows_async_probing+0x160/0x160 [ 57.036113][ T17] bus_for_each_drv+0x162/0x1e0 [ 57.040980][ T17] ? bus_rescan_devices+0x20/0x20 [ 57.046262][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.052137][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 57.057441][ T17] __device_attach+0x217/0x390 [ 57.062226][ T17] ? device_bind_driver+0xd0/0xd0 [ 57.067261][ T17] bus_probe_device+0x1e4/0x290 [ 57.072140][ T17] device_add+0x1459/0x1bf0 [ 57.076691][ T17] ? wait_for_completion+0x3c0/0x3c0 [ 57.081985][ T17] ? device_link_remove+0x110/0x110 [ 57.087412][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.093235][ T17] usb_set_configuration+0xe47/0x17d0 [ 57.098618][ T17] generic_probe+0x9d/0xd5 [ 57.103045][ T17] usb_probe_device+0xaf/0x140 [ 57.107840][ T17] ? usb_suspend+0x5f0/0x5f0 [ 57.112447][ T17] really_probe+0x290/0xac0 [ 57.116987][ T17] driver_probe_device+0x223/0x350 [ 57.122278][ T17] __device_attach_driver+0x1d1/0x290 [ 57.127761][ T17] ? driver_allows_async_probing+0x160/0x160 [ 57.133789][ T17] bus_for_each_drv+0x162/0x1e0 [ 57.138652][ T17] ? bus_rescan_devices+0x20/0x20 [ 57.143673][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.149825][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 57.155092][ T17] __device_attach+0x217/0x390 [ 57.159836][ T17] ? device_bind_driver+0xd0/0xd0 [ 57.165278][ T17] bus_probe_device+0x1e4/0x290 [ 57.170118][ T17] device_add+0x1459/0x1bf0 [ 57.174607][ T17] ? device_link_remove+0x110/0x110 [ 57.179864][ T17] usb_new_device.cold+0x540/0xcd0 [ 57.184961][ T17] hub_event+0x21cb/0x4300 [ 57.189370][ T17] ? hub_port_debounce+0x350/0x350 [ 57.194464][ T17] ? find_held_lock+0x2d/0x110 [ 57.199226][ T17] ? mark_held_locks+0xe0/0xe0 [ 57.203977][ T17] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.209501][ T17] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 57.214787][ T17] process_one_work+0x94b/0x1620 [ 57.219709][ T17] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.225064][ T17] ? do_raw_spin_lock+0x129/0x290 [ 57.230091][ T17] worker_thread+0x96/0xe20 [ 57.234585][ T17] ? process_one_work+0x1620/0x1620 [ 57.239779][ T17] kthread+0x318/0x420 [ 57.243841][ T17] ? kthread_create_on_node+0xf0/0xf0 [ 57.249198][ T17] ret_from_fork+0x24/0x30 [ 57.253605][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc1-syzkaller #0 [ 57.261783][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.271850][ T12] Workqueue: usb_hub_wq hub_event [ 57.276863][ T12] Call Trace: [ 57.280142][ T12] dump_stack+0xef/0x16e [ 57.284370][ T12] sysfs_warn_dup.cold+0x1c/0x2d [ 57.289291][ T12] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 57.295339][ T12] sysfs_create_link+0x61/0xc0 [ 57.300098][ T12] device_add+0x756/0x1bf0 [ 57.304505][ T12] ? lockdep_init_map+0x1b0/0x5e0 [ 57.309534][ T12] ? device_link_remove+0x110/0x110 [ 57.314724][ T12] ? __init_waitqueue_head+0x31/0x90 [ 57.319993][ T12] tty_register_device_attr+0x341/0x6f0 [ 57.325540][ T12] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 57.331079][ T12] ? mark_held_locks+0x9f/0xe0 [ 57.335848][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.341634][ T12] ? tty_port_register_device_attr+0xb9/0x110 [ 57.347680][ T12] hso_serial_common_create+0x113/0x710 [ 57.353210][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 57.358487][ T12] hso_probe+0xc93/0x1b7b [ 57.362802][ T12] usb_probe_interface+0x310/0x800 [ 57.367930][ T12] ? usb_probe_device+0x140/0x140 [ 57.372951][ T12] really_probe+0x290/0xac0 [ 57.377529][ T12] driver_probe_device+0x223/0x350 [ 57.382730][ T12] __device_attach_driver+0x1d1/0x290 [ 57.388128][ T12] ? driver_allows_async_probing+0x160/0x160 [ 57.394102][ T12] bus_for_each_drv+0x162/0x1e0 [ 57.399092][ T12] ? bus_rescan_devices+0x20/0x20 [ 57.404125][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.409936][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 57.415213][ T12] __device_attach+0x217/0x390 [ 57.419963][ T12] ? device_bind_driver+0xd0/0xd0 [ 57.424998][ T12] bus_probe_device+0x1e4/0x290 [ 57.429969][ T12] device_add+0x1459/0x1bf0 [ 57.434486][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 57.439777][ T12] ? device_link_remove+0x110/0x110 [ 57.444994][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.450931][ T12] usb_set_configuration+0xe47/0x17d0 [ 57.456314][ T12] generic_probe+0x9d/0xd5 [ 57.460738][ T12] usb_probe_device+0xaf/0x140 [ 57.465526][ T12] ? usb_suspend+0x5f0/0x5f0 [ 57.470107][ T12] really_probe+0x290/0xac0 [ 57.474611][ T12] driver_probe_device+0x223/0x350 [ 57.479759][ T12] __device_attach_driver+0x1d1/0x290 [ 57.485149][ T12] ? driver_allows_async_probing+0x160/0x160 [ 57.491339][ T12] bus_for_each_drv+0x162/0x1e0 [ 57.496204][ T12] ? bus_rescan_devices+0x20/0x20 [ 57.501433][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.507232][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 57.512626][ T12] __device_attach+0x217/0x390 [ 57.517531][ T12] ? device_bind_driver+0xd0/0xd0 [ 57.522595][ T12] bus_probe_device+0x1e4/0x290 [ 57.527470][ T12] device_add+0x1459/0x1bf0 [ 57.531988][ T12] ? device_link_remove+0x110/0x110 [ 57.537303][ T12] usb_new_device.cold+0x540/0xcd0 [ 57.542445][ T12] hub_event+0x21cb/0x4300 [ 57.546853][ T12] ? hub_port_debounce+0x350/0x350 [ 57.552087][ T12] ? find_held_lock+0x2d/0x110 [ 57.556872][ T12] ? mark_held_locks+0xe0/0xe0 [ 57.562795][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.568449][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 57.573744][ T12] process_one_work+0x94b/0x1620 [ 57.578689][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.584166][ T12] ? do_raw_spin_lock+0x129/0x290 [ 57.589205][ T12] worker_thread+0x96/0xe20 [ 57.594006][ T12] ? process_one_work+0x1620/0x1620 [ 57.599322][ T12] kthread+0x318/0x420 [ 57.603390][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 57.608762][ T12] ret_from_fork+0x24/0x30 [ 57.614806][ T5] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 57.614847][ T17] hso 4-1:0.0: Failed to find BULK IN ep [ 57.622624][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc1-syzkaller #0 [ 57.622633][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.622651][ T5] Workqueue: usb_hub_wq hub_event [ 57.622665][ T5] Call Trace: [ 57.622685][ T5] dump_stack+0xef/0x16e [ 57.622701][ T5] sysfs_warn_dup.cold+0x1c/0x2d [ 57.622715][ T5] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 57.622725][ T5] sysfs_create_link+0x61/0xc0 [ 57.622743][ T5] device_add+0x756/0x1bf0 [ 57.628531][ T17] general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN [ 57.636469][ T5] ? lockdep_init_map+0x1b0/0x5e0 [ 57.646522][ T17] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 57.651552][ T5] ? device_link_remove+0x110/0x110 [ 57.654843][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.6.0-rc1-syzkaller #0 [ 57.659131][ T5] ? __init_waitqueue_head+0x31/0x90 [ 57.659144][ T5] tty_register_device_attr+0x341/0x6f0 [ 57.659156][ T5] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 57.659173][ T5] ? mark_held_locks+0x9f/0xe0 [ 57.664231][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.670631][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.675389][ T17] Workqueue: usb_hub_wq hub_event [ 57.679825][ T5] ? tty_port_register_device_attr+0xb9/0x110 [ 57.690839][ T17] RIP: 0010:cdev_del+0x22/0x90 [ 57.695848][ T5] hso_serial_common_create+0x113/0x710 [ 57.704252][ T17] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 03 a6 d2 ff 48 8d 7d 64 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 4f 48 [ 57.709460][ T5] ? kasan_unpoison_shadow+0x30/0x40 [ 57.717590][ T17] RSP: 0018:ffff8881da267258 EFLAGS: 00010207 [ 57.722933][ T5] hso_probe+0xc93/0x1b7b [ 57.728822][ T17] RAX: dffffc0000000000 RBX: ffff8881d501cf00 RCX: ffffffff8216169e [ 57.734405][ T5] usb_probe_interface+0x310/0x800 [ 57.739158][ T17] RDX: 000000000000000c RSI: ffffffff816cbc1d RDI: 0000000000000064 [ 57.749286][ T5] ? usb_probe_device+0x140/0x140 [ 57.755074][ T17] RBP: 0000000000000000 R08: ffff8881da24b100 R09: fffffbfff126768f [ 57.755089][ T17] R10: fffffbfff126768e R11: ffffffff8933b477 R12: 0000000000000000 [ 57.760232][ T5] really_probe+0x290/0xac0 [ 57.766388][ T17] R13: ffff8881d51da000 R14: ffff8881cdbb4000 R15: ffff8881c754e070 [ 57.771198][ T5] driver_probe_device+0x223/0x350 [ 57.771209][ T5] __device_attach_driver+0x1d1/0x290 [ 57.771218][ T5] ? driver_allows_async_probing+0x160/0x160 [ 57.771228][ T5] bus_for_each_drv+0x162/0x1e0 [ 57.771239][ T5] ? bus_rescan_devices+0x20/0x20 [ 57.771258][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.776827][ T17] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 57.797139][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 57.802499][ T17] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.809193][ T5] __device_attach+0x217/0x390 [ 57.813519][ T17] CR2: 00000000004c4368 CR3: 00000001ce6df000 CR4: 00000000001406e0 [ 57.821517][ T5] ? device_bind_driver+0xd0/0xd0 [ 57.826694][ T17] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.834676][ T5] bus_probe_device+0x1e4/0x290 [ 57.839693][ T17] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.839705][ T17] Call Trace: [ 57.847709][ T5] device_add+0x1459/0x1bf0 [ 57.855689][ T17] tty_unregister_device+0x10d/0x1a0 [ 57.860295][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 57.868273][ T17] hso_probe.cold+0x6e/0x14c [ 57.873392][ T5] ? device_link_remove+0x110/0x110 [ 57.878747][ T17] usb_probe_interface+0x310/0x800 [ 57.884749][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.889579][ T17] ? usb_probe_device+0x140/0x140 [ 57.894727][ T5] usb_set_configuration+0xe47/0x17d0 [ 57.900530][ T17] really_probe+0x290/0xac0 [ 57.909460][ T5] generic_probe+0x9d/0xd5 [ 57.914740][ T17] driver_probe_device+0x223/0x350 [ 57.921408][ T5] usb_probe_device+0xaf/0x140 [ 57.926173][ T17] __device_attach_driver+0x1d1/0x290 [ 57.926183][ T17] ? driver_allows_async_probing+0x160/0x160 [ 57.926201][ T17] bus_for_each_drv+0x162/0x1e0 [ 57.934301][ T5] ? usb_suspend+0x5f0/0x5f0 [ 57.939316][ T17] ? bus_rescan_devices+0x20/0x20 [ 57.947302][ T5] really_probe+0x290/0xac0 [ 57.952176][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 57.960167][ T5] driver_probe_device+0x223/0x350 [ 57.963455][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 57.967988][ T5] __device_attach_driver+0x1d1/0x290 [ 57.973293][ T17] __device_attach+0x217/0x390 [ 57.978587][ T5] ? driver_allows_async_probing+0x160/0x160 [ 57.983187][ T17] ? device_bind_driver+0xd0/0xd0 [ 57.988402][ T5] bus_for_each_drv+0x162/0x1e0 [ 57.993514][ T17] bus_probe_device+0x1e4/0x290 [ 57.999330][ T5] ? bus_rescan_devices+0x20/0x20 [ 58.004482][ T17] device_add+0x1459/0x1bf0 [ 58.009873][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 58.014370][ T17] ? wait_for_completion+0x3c0/0x3c0 [ 58.019384][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 58.024495][ T17] ? device_link_remove+0x110/0x110 [ 58.029815][ T5] __device_attach+0x217/0x390 [ 58.035196][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 58.041175][ T5] ? device_bind_driver+0xd0/0xd0 [ 58.046164][ T17] usb_set_configuration+0xe47/0x17d0 [ 58.050890][ T5] bus_probe_device+0x1e4/0x290 [ 58.055996][ T17] generic_probe+0x9d/0xd5 [ 58.060517][ T5] device_add+0x1459/0x1bf0 [ 58.066462][ T17] usb_probe_device+0xaf/0x140 [ 58.071680][ T5] ? device_link_remove+0x110/0x110 [ 58.077133][ T17] ? usb_suspend+0x5f0/0x5f0 [ 58.082595][ T5] usb_new_device.cold+0x540/0xcd0 [ 58.087366][ T17] really_probe+0x290/0xac0 [ 58.093357][ T5] hub_event+0x21cb/0x4300 [ 58.098500][ T17] driver_probe_device+0x223/0x350 [ 58.103379][ T5] ? hub_port_debounce+0x350/0x350 [ 58.108303][ T17] __device_attach_driver+0x1d1/0x290 [ 58.113402][ T5] ? find_held_lock+0x2d/0x110 [ 58.117919][ T17] ? driver_allows_async_probing+0x160/0x160 [ 58.123912][ T5] ? mark_held_locks+0xe0/0xe0 [ 58.129454][ T17] bus_for_each_drv+0x162/0x1e0 [ 58.134923][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.140221][ T17] ? bus_rescan_devices+0x20/0x20 [ 58.145120][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 58.151093][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 58.156207][ T5] process_one_work+0x94b/0x1620 [ 58.161573][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 58.166422][ T5] ? __wake_up_common+0x650/0x650 [ 58.170836][ T17] __device_attach+0x217/0x390 [ 58.175351][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.180218][ T17] ? device_bind_driver+0xd0/0xd0 [ 58.188947][ T5] worker_thread+0x96/0xe20 [ 58.193844][ T17] bus_probe_device+0x1e4/0x290 [ 58.199099][ T5] ? process_one_work+0x1620/0x1620 [ 58.203976][ T17] device_add+0x1459/0x1bf0 [ 58.208499][ T5] kthread+0x318/0x420 [ 58.213623][ T17] ? device_link_remove+0x110/0x110 [ 58.218728][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 58.224116][ T17] usb_new_device.cold+0x540/0xcd0 [ 58.229141][ T5] ret_from_fork+0x24/0x30 [ 58.235133][ T17] hub_event+0x21cb/0x4300 [ 58.240299][ T1809] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 58.244748][ T17] ? hub_port_debounce+0x350/0x350 [ 58.250524][ T1809] CPU: 0 PID: 1809 Comm: kworker/0:3 Not tainted 5.6.0-rc1-syzkaller #0 [ 58.255533][ T17] ? find_held_lock+0x2d/0x110 [ 58.260920][ T1809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.266744][ T17] ? mark_held_locks+0xe0/0xe0 [ 58.271694][ T1809] Workqueue: usb_hub_wq hub_event [ 58.277006][ T17] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.282030][ T1809] Call Trace: [ 58.286918][ T17] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 58.292280][ T1809] dump_stack+0xef/0x16e [ 58.297296][ T17] process_one_work+0x94b/0x1620 [ 58.301781][ T1809] sysfs_warn_dup.cold+0x1c/0x2d [ 58.306604][ T17] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.312047][ T1809] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 58.316524][ T17] ? do_raw_spin_lock+0x129/0x290 [ 58.320582][ T1809] sysfs_create_link+0x61/0xc0 [ 58.325784][ T17] worker_thread+0x96/0xe20 [ 58.332019][ T1809] device_add+0x756/0x1bf0 [ 58.337281][ T17] ? process_one_work+0x1620/0x1620 [ 58.341685][ T1809] ? lockdep_init_map+0xcb/0x5e0 [ 58.346180][ T17] kthread+0x318/0x420 [ 58.353618][ T1809] ? device_link_remove+0x110/0x110 [ 58.358886][ T17] ? kthread_create_on_node+0xf0/0xf0 [ 58.367363][ T1809] ? __init_waitqueue_head+0x31/0x90 [ 58.372100][ T17] ret_from_fork+0x24/0x30 [ 58.382670][ T1809] tty_register_device_attr+0x341/0x6f0 [ 58.387398][ T17] Modules linked in: [ 58.392405][ T1809] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 58.398168][ T17] ---[ end trace 0e77ad829b65f389 ]--- [ 58.401357][ T1809] ? lock_downgrade+0x6e0/0x6e0 [ 58.401371][ T1809] ? lock_acquire+0x130/0x340 [ 58.406631][ T17] RIP: 0010:cdev_del+0x22/0x90 [ 58.410854][ T1809] ? hso_serial_common_create+0x4f/0x710 [ 58.410866][ T1809] ? trace_hardirqs_on+0x55/0x200 [ 58.410882][ T1809] ? tty_port_register_device_attr+0xb9/0x110 [ 58.416679][ T17] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 03 a6 d2 ff 48 8d 7d 64 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 4f 48 [ 58.421936][ T1809] hso_serial_common_create+0x113/0x710 [ 58.421948][ T1809] ? kasan_unpoison_shadow+0x30/0x40 [ 58.421963][ T1809] hso_probe+0xc93/0x1b7b [ 58.427316][ T17] RSP: 0018:ffff8881da267258 EFLAGS: 00010207 [ 58.433373][ T1809] usb_probe_interface+0x310/0x800 [ 58.433390][ T1809] ? usb_probe_device+0x140/0x140 [ 58.438442][ T17] RAX: dffffc0000000000 RBX: ffff8881d501cf00 RCX: ffffffff8216169e [ 58.443290][ T1809] really_probe+0x290/0xac0 [ 58.447799][ T17] RDX: 000000000000000c RSI: ffffffff816cbc1d RDI: 0000000000000064 [ 58.452319][ T1809] driver_probe_device+0x223/0x350 [ 58.452330][ T1809] __device_attach_driver+0x1d1/0x290 [ 58.452339][ T1809] ? driver_allows_async_probing+0x160/0x160 [ 58.452358][ T1809] bus_for_each_drv+0x162/0x1e0 [ 58.457567][ T17] RBP: 0000000000000000 R08: ffff8881da24b100 R09: fffffbfff126768f [ 58.462849][ T1809] ? bus_rescan_devices+0x20/0x20 [ 58.462864][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 58.462875][ T1809] ? lockdep_hardirqs_on+0x382/0x580 [ 58.462892][ T1809] __device_attach+0x217/0x390 [ 58.466962][ T17] R10: fffffbfff126768e R11: ffffffff8933b477 R12: 0000000000000000 [ 58.472239][ T1809] ? device_bind_driver+0xd0/0xd0 [ 58.472252][ T1809] bus_probe_device+0x1e4/0x290 [ 58.472262][ T1809] device_add+0x1459/0x1bf0 [ 58.472280][ T1809] ? wait_for_completion+0x3c0/0x3c0 [ 58.477639][ T17] R13: ffff8881d51da000 R14: ffff8881cdbb4000 R15: ffff8881c754e070 [ 58.482914][ T1809] ? device_link_remove+0x110/0x110 [ 58.482924][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 58.482935][ T1809] usb_set_configuration+0xe47/0x17d0 [ 58.482950][ T1809] generic_probe+0x9d/0xd5 [ 58.487552][ T17] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 58.494259][ T1809] usb_probe_device+0xaf/0x140 [ 58.494271][ T1809] ? usb_suspend+0x5f0/0x5f0 [ 58.494279][ T1809] really_probe+0x290/0xac0 [ 58.494295][ T1809] driver_probe_device+0x223/0x350 [ 58.498222][ T17] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.503781][ T1809] __device_attach_driver+0x1d1/0x290 [ 58.509297][ T17] CR2: 00000000004c4368 CR3: 00000001ce6df000 CR4: 00000000001406e0 [ 58.514117][ T1809] ? driver_allows_async_probing+0x160/0x160 [ 58.518787][ T17] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.531374][ T1809] bus_for_each_drv+0x162/0x1e0 [ 58.531390][ T1809] ? bus_rescan_devices+0x20/0x20 [ 58.531400][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 58.531419][ T1809] ? lockdep_hardirqs_on+0x382/0x580 [ 58.537325][ T17] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.542321][ T1809] __device_attach+0x217/0x390 [ 58.542331][ T1809] ? device_bind_driver+0xd0/0xd0 [ 58.542348][ T1809] bus_probe_device+0x1e4/0x290 [ 58.548399][ T17] Kernel panic - not syncing: Fatal exception [ 58.568081][ T1809] device_add+0x1459/0x1bf0 [ 58.855835][ T1809] ? device_link_remove+0x110/0x110 [ 58.861637][ T1809] usb_new_device.cold+0x540/0xcd0 [ 58.867842][ T1809] hub_event+0x21cb/0x4300 [ 58.872363][ T1809] ? hub_port_debounce+0x350/0x350 [ 58.878448][ T1809] ? find_held_lock+0x2d/0x110 [ 58.883309][ T1809] ? mark_held_locks+0xe0/0xe0 [ 58.888258][ T1809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.893818][ T1809] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 58.900200][ T1809] process_one_work+0x94b/0x1620 [ 58.905154][ T1809] ? __wake_up_common+0x650/0x650 [ 58.910190][ T1809] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.915645][ T1809] worker_thread+0x96/0xe20 [ 58.920179][ T1809] ? process_one_work+0x1620/0x1620 [ 58.925367][ T1809] kthread+0x318/0x420 [ 58.929435][ T1809] ? kthread_create_on_node+0xf0/0xf0 [ 58.934933][ T1809] ret_from_fork+0x24/0x30 [ 58.940115][ T17] Kernel Offset: disabled [ 58.945424][ T17] Rebooting in 86400 seconds..