Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 540.354170][ T95] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 540.354179][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 540.364365][ T1807] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 540.377152][ T1809] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 540.383907][ T12] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 540.384672][ T17] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 540.454340][ T94] usb 1-1: Using ep0 maxpacket: 32 [ 540.464104][ T95] usb 5-1: Using ep0 maxpacket: 32 [ 540.474030][ T12] usb 4-1: Using ep0 maxpacket: 32 [ 540.494070][ T1809] usb 6-1: Using ep0 maxpacket: 32 [ 540.499335][ T1807] usb 2-1: Using ep0 maxpacket: 32 [ 540.504709][ T17] usb 3-1: Using ep0 maxpacket: 32 [ 540.574132][ T94] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 540.583318][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 540.596628][ T95] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 540.598131][ T12] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 540.605812][ T95] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 540.614750][ T12] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 540.624123][ T1809] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 540.631609][ T94] usb 1-1: config 0 descriptor?? [ 540.639809][ T1809] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 540.640100][ T17] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 540.650810][ T12] usb 4-1: config 0 descriptor?? [ 540.653043][ T17] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 540.653125][ T1807] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 540.684200][ T1807] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 540.693017][ T95] usb 5-1: config 0 descriptor?? [ 540.702221][ T17] usb 3-1: config 0 descriptor?? [ 540.711849][ T1809] usb 6-1: config 0 descriptor?? [ 540.722466][ T1807] usb 2-1: config 0 descriptor?? [ 540.905624][ T94] hso 1-1:0.0: Failed to find BULK IN ep [ 540.924491][ T12] hso 4-1:0.0: Failed to find BULK IN ep [ 540.954733][ T95] hso 5-1:0.0: Failed to find BULK IN ep [ 540.975228][ T17] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 540.982710][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.6.0-rc3-syzkaller #0 [ 540.991570][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 541.001730][ T17] Workqueue: usb_hub_wq hub_event [ 541.006771][ T17] Call Trace: [ 541.010123][ T17] dump_stack+0xef/0x16e [ 541.014442][ T17] sysfs_warn_dup.cold+0x1c/0x2d [ 541.019380][ T17] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 541.025445][ T17] sysfs_create_link+0x61/0xc0 [ 541.030275][ T17] device_add+0x756/0x1bf0 [ 541.034722][ T17] ? lockdep_init_map+0x1b0/0x5e0 [ 541.039731][ T17] ? device_link_remove+0x110/0x110 [ 541.044972][ T17] ? __init_waitqueue_head+0x31/0x90 [ 541.050368][ T17] tty_register_device_attr+0x341/0x6f0 [ 541.055927][ T17] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 541.061472][ T17] ? mark_held_locks+0x9f/0xe0 [ 541.066575][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.072376][ T17] ? tty_port_register_device_attr+0xb9/0x110 [ 541.078496][ T17] hso_serial_common_create+0x113/0x710 [ 541.084221][ T17] ? kasan_unpoison_shadow+0x30/0x40 [ 541.089516][ T17] hso_probe+0xc93/0x1b7b [ 541.093905][ T17] usb_probe_interface+0x310/0x800 [ 541.099030][ T17] ? usb_probe_device+0x230/0x230 [ 541.104032][ T17] really_probe+0x290/0xac0 [ 541.108511][ T17] driver_probe_device+0x223/0x350 [ 541.113614][ T17] __device_attach_driver+0x1d1/0x290 [ 541.118976][ T17] ? driver_allows_async_probing+0x160/0x160 [ 541.124938][ T17] bus_for_each_drv+0x162/0x1e0 [ 541.129767][ T17] ? bus_rescan_devices+0x20/0x20 [ 541.134779][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.140579][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 541.145851][ T17] __device_attach+0x217/0x390 [ 541.150600][ T17] ? device_bind_driver+0xd0/0xd0 executing program [ 541.155615][ T17] bus_probe_device+0x1e4/0x290 [ 541.156704][ T12] usb 5-1: USB disconnect, device number 2 [ 541.160467][ T17] device_add+0x1459/0x1bf0 [ 541.170758][ T17] ? wait_for_completion+0x3c0/0x3c0 [ 541.176045][ T17] ? device_link_remove+0x110/0x110 [ 541.181330][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.187130][ T17] usb_set_configuration+0xe47/0x17d0 [ 541.192479][ T17] usb_generic_driver_probe+0x9d/0xe0 [ 541.197828][ T17] usb_probe_device+0xd9/0x230 [ 541.202567][ T17] ? usb_suspend+0x5f0/0x5f0 [ 541.207134][ T17] really_probe+0x290/0xac0 [ 541.211611][ T17] driver_probe_device+0x223/0x350 [ 541.216710][ T17] __device_attach_driver+0x1d1/0x290 [ 541.222179][ T17] ? driver_allows_async_probing+0x160/0x160 [ 541.228267][ T17] bus_for_each_drv+0x162/0x1e0 [ 541.233218][ T17] ? bus_rescan_devices+0x20/0x20 [ 541.238235][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.244104][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 541.249364][ T17] __device_attach+0x217/0x390 [ 541.254107][ T17] ? device_bind_driver+0xd0/0xd0 [ 541.259111][ T17] bus_probe_device+0x1e4/0x290 [ 541.263943][ T17] device_add+0x1459/0x1bf0 [ 541.268427][ T17] ? device_link_remove+0x110/0x110 [ 541.273616][ T17] usb_new_device.cold+0x540/0xcd0 [ 541.278728][ T17] hub_event+0x21cb/0x4300 [ 541.283143][ T17] ? hub_port_debounce+0x350/0x350 [ 541.288235][ T17] ? find_held_lock+0x2d/0x110 [ 541.292981][ T17] ? mark_held_locks+0xe0/0xe0 [ 541.297842][ T17] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 541.303369][ T17] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 541.308689][ T17] process_one_work+0x94b/0x1620 [ 541.313607][ T17] ? __wake_up_common+0x650/0x650 [ 541.318641][ T17] ? pwq_dec_nr_in_flight+0x310/0x310 [ 541.323990][ T17] worker_thread+0x96/0xe20 [ 541.328497][ T17] ? process_one_work+0x1620/0x1620 [ 541.333730][ T17] kthread+0x318/0x420 [ 541.337793][ T17] ? kthread_create_on_node+0xf0/0xf0 [ 541.343168][ T17] ret_from_fork+0x24/0x30 [ 541.349426][ T1807] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' executing program executing program executing program executing program [ 541.351447][ T94] usb 4-1: USB disconnect, device number 2 [ 541.357110][ T1807] CPU: 1 PID: 1807 Comm: kworker/1:1 Not tainted 5.6.0-rc3-syzkaller #0 [ 541.371107][ T1807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 541.381169][ T1807] Workqueue: usb_hub_wq hub_event [ 541.386192][ T1807] Call Trace: [ 541.389495][ T1807] dump_stack+0xef/0x16e [ 541.393729][ T1807] sysfs_warn_dup.cold+0x1c/0x2d [ 541.398670][ T1807] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 541.404738][ T1807] sysfs_create_link+0x61/0xc0 [ 541.409487][ T1807] device_add+0x756/0x1bf0 [ 541.413889][ T1807] ? lockdep_init_map+0x1b0/0x5e0 [ 541.418891][ T1807] ? device_link_remove+0x110/0x110 [ 541.424064][ T1807] ? __init_waitqueue_head+0x31/0x90 [ 541.429328][ T1807] tty_register_device_attr+0x341/0x6f0 [ 541.434952][ T1807] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 541.440503][ T1807] ? mark_held_locks+0x9f/0xe0 [ 541.445269][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.451053][ T1807] ? tty_port_register_device_attr+0xb9/0x110 [ 541.457105][ T1807] hso_serial_common_create+0x113/0x710 [ 541.462633][ T1807] ? kasan_unpoison_shadow+0x30/0x40 [ 541.467897][ T1807] hso_probe+0xc93/0x1b7b [ 541.472218][ T1807] usb_probe_interface+0x310/0x800 [ 541.477401][ T1807] ? usb_probe_device+0x230/0x230 [ 541.482401][ T1807] really_probe+0x290/0xac0 [ 541.486883][ T1807] driver_probe_device+0x223/0x350 [ 541.492930][ T1807] __device_attach_driver+0x1d1/0x290 [ 541.498278][ T1807] ? driver_allows_async_probing+0x160/0x160 executing program [ 541.504244][ T1807] bus_for_each_drv+0x162/0x1e0 [ 541.509077][ T1807] ? bus_rescan_devices+0x20/0x20 [ 541.514089][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.519875][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 541.525144][ T1807] __device_attach+0x217/0x390 [ 541.529890][ T1807] ? device_bind_driver+0xd0/0xd0 [ 541.534911][ T1807] bus_probe_device+0x1e4/0x290 [ 541.539770][ T1807] device_add+0x1459/0x1bf0 [ 541.544251][ T1807] ? wait_for_completion+0x3c0/0x3c0 [ 541.549703][ T1807] ? device_link_remove+0x110/0x110 [ 541.554905][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.560706][ T1807] usb_set_configuration+0xe47/0x17d0 [ 541.566059][ T1807] usb_generic_driver_probe+0x9d/0xe0 [ 541.571408][ T1807] usb_probe_device+0xd9/0x230 [ 541.576163][ T1807] ? usb_suspend+0x5f0/0x5f0 [ 541.580749][ T1807] really_probe+0x290/0xac0 [ 541.585253][ T1807] driver_probe_device+0x223/0x350 [ 541.590354][ T1807] __device_attach_driver+0x1d1/0x290 [ 541.595699][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 541.601655][ T1807] bus_for_each_drv+0x162/0x1e0 [ 541.606493][ T1807] ? bus_rescan_devices+0x20/0x20 [ 541.611508][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.617305][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 541.622575][ T1807] __device_attach+0x217/0x390 [ 541.627323][ T1807] ? device_bind_driver+0xd0/0xd0 [ 541.632338][ T1807] bus_probe_device+0x1e4/0x290 [ 541.637178][ T1807] device_add+0x1459/0x1bf0 [ 541.641704][ T1807] ? device_link_remove+0x110/0x110 [ 541.646919][ T1807] usb_new_device.cold+0x540/0xcd0 [ 541.652017][ T1807] hub_event+0x21cb/0x4300 [ 541.656428][ T1807] ? hub_port_debounce+0x350/0x350 [ 541.661533][ T1807] ? find_held_lock+0x2d/0x110 [ 541.666281][ T1807] ? mark_held_locks+0xe0/0xe0 [ 541.671031][ T1807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 541.676553][ T1807] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 541.681833][ T1807] process_one_work+0x94b/0x1620 [ 541.686811][ T1807] ? __wake_up_common+0x650/0x650 [ 541.691824][ T1807] ? pwq_dec_nr_in_flight+0x310/0x310 [ 541.697289][ T1807] worker_thread+0x96/0xe20 [ 541.701831][ T1807] ? process_one_work+0x1620/0x1620 [ 541.707078][ T1807] kthread+0x318/0x420 [ 541.711129][ T1807] ? kthread_create_on_node+0xf0/0xf0 [ 541.716480][ T1807] ret_from_fork+0x24/0x30 [ 541.721967][ T1809] hso 6-1:0.0: Failed to find BULK IN ep [ 541.730615][ T1809] usb 6-1: USB disconnect, device number 2 [ 541.736805][ T1807] hso 2-1:0.0: Failed to find BULK IN ep [ 541.742646][ T1807] general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN [ 541.753650][ T1807] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 541.762034][ T1807] CPU: 1 PID: 1807 Comm: kworker/1:1 Not tainted 5.6.0-rc3-syzkaller #0 [ 541.770359][ T1807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 541.780420][ T1807] Workqueue: usb_hub_wq hub_event [ 541.785482][ T1807] RIP: 0010:cdev_del+0x22/0x90 [ 541.790227][ T1807] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 33 a5 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 [ 541.809808][ T1807] RSP: 0018:ffff8881cdf7f248 EFLAGS: 00010207 [ 541.815867][ T1807] RAX: dffffc0000000000 RBX: ffff8881d56fde00 RCX: ffffffff82167c6e [ 541.823822][ T1807] RDX: 000000000000000c RSI: ffffffff816cb7bd RDI: 0000000000000064 [ 541.831778][ T1807] RBP: 0000000000000000 R08: ffff8881cd994980 R09: fffffbfff1266c8f [ 541.839730][ T1807] R10: fffffbfff1266c8e R11: ffffffff89336477 R12: 0000000000000000 [ 541.847742][ T1807] R13: ffff8881d51d3000 R14: ffff8881cd6b5000 R15: ffff8881cd965070 [ 541.855695][ T1807] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 541.864607][ T1807] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 541.871172][ T1807] CR2: 00000000004c43a8 CR3: 0000000007021000 CR4: 00000000001406e0 [ 541.879124][ T1807] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 541.887079][ T1807] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 541.895063][ T1807] Call Trace: [ 541.898335][ T1807] tty_unregister_device+0x10d/0x1a0 [ 541.903609][ T1807] hso_probe.cold+0x6e/0x14c [ 541.908187][ T1807] usb_probe_interface+0x310/0x800 [ 541.913296][ T1807] ? usb_probe_device+0x230/0x230 [ 541.918295][ T1807] really_probe+0x290/0xac0 [ 541.922774][ T1807] driver_probe_device+0x223/0x350 [ 541.927871][ T1807] __device_attach_driver+0x1d1/0x290 [ 541.933221][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 541.939185][ T1807] bus_for_each_drv+0x162/0x1e0 [ 541.944019][ T1807] ? bus_rescan_devices+0x20/0x20 [ 541.949020][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.954801][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 541.960058][ T1807] __device_attach+0x217/0x390 [ 541.964807][ T1807] ? device_bind_driver+0xd0/0xd0 [ 541.969803][ T1807] bus_probe_device+0x1e4/0x290 [ 541.974629][ T1807] device_add+0x1459/0x1bf0 [ 541.979123][ T1807] ? wait_for_completion+0x3c0/0x3c0 [ 541.985267][ T1807] ? device_link_remove+0x110/0x110 [ 541.990501][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 541.996302][ T1807] usb_set_configuration+0xe47/0x17d0 [ 542.001655][ T1807] usb_generic_driver_probe+0x9d/0xe0 [ 542.007002][ T1807] usb_probe_device+0xd9/0x230 [ 542.011748][ T1807] ? usb_suspend+0x5f0/0x5f0 [ 542.016349][ T1807] really_probe+0x290/0xac0 [ 542.020827][ T1807] driver_probe_device+0x223/0x350 [ 542.025924][ T1807] __device_attach_driver+0x1d1/0x290 [ 542.031278][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 542.037248][ T1807] bus_for_each_drv+0x162/0x1e0 [ 542.042077][ T1807] ? bus_rescan_devices+0x20/0x20 [ 542.047077][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 542.052860][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 542.058121][ T1807] __device_attach+0x217/0x390 [ 542.062861][ T1807] ? device_bind_driver+0xd0/0xd0 [ 542.067858][ T1807] bus_probe_device+0x1e4/0x290 [ 542.072685][ T1807] device_add+0x1459/0x1bf0 [ 542.077163][ T1807] ? device_link_remove+0x110/0x110 [ 542.082337][ T1807] usb_new_device.cold+0x540/0xcd0 [ 542.087431][ T1807] hub_event+0x21cb/0x4300 [ 542.091841][ T1807] ? hub_port_debounce+0x350/0x350 [ 542.096939][ T1807] ? find_held_lock+0x2d/0x110 [ 542.101683][ T1807] ? mark_held_locks+0xe0/0xe0 [ 542.106436][ T1807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 542.111957][ T1807] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 542.117228][ T1807] process_one_work+0x94b/0x1620 [ 542.122151][ T1807] ? __wake_up_common+0x650/0x650 [ 542.127155][ T1807] ? pwq_dec_nr_in_flight+0x310/0x310 [ 542.132510][ T1807] worker_thread+0x96/0xe20 [ 542.137009][ T1807] ? process_one_work+0x1620/0x1620 [ 542.142193][ T1807] kthread+0x318/0x420 [ 542.146243][ T1807] ? kthread_create_on_node+0xf0/0xf0 [ 542.151593][ T1807] ret_from_fork+0x24/0x30 [ 542.156270][ T1807] Modules linked in: [ 542.160313][ T1807] ---[ end trace 8e739b53e0e645cd ]--- [ 542.165795][ T1807] RIP: 0010:cdev_del+0x22/0x90 [ 542.170543][ T1807] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 33 a5 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 [ 542.190205][ T1807] RSP: 0018:ffff8881cdf7f248 EFLAGS: 00010207 [ 542.196292][ T1807] RAX: dffffc0000000000 RBX: ffff8881d56fde00 RCX: ffffffff82167c6e [ 542.204268][ T1807] RDX: 000000000000000c RSI: ffffffff816cb7bd RDI: 0000000000000064 [ 542.212231][ T1807] RBP: 0000000000000000 R08: ffff8881cd994980 R09: fffffbfff1266c8f [ 542.220223][ T1807] R10: fffffbfff1266c8e R11: ffffffff89336477 R12: 0000000000000000 [ 542.228215][ T1807] R13: ffff8881d51d3000 R14: ffff8881cd6b5000 R15: ffff8881cd965070 [ 542.236204][ T1807] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 542.245154][ T1807] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 542.251716][ T1807] CR2: 00000000004c43a8 CR3: 0000000007021000 CR4: 00000000001406e0 [ 542.259695][ T1807] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 542.267669][ T1807] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 542.275656][ T1807] Kernel panic - not syncing: Fatal exception [ 542.282464][ T1807] Kernel Offset: disabled [ 542.286842][ T1807] Rebooting in 86400 seconds..