[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 28.469933][ C1] random: crng init done [ 28.470944][ C1] random: 7 urandom warning(s) missed due to ratelimiting Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 34.353551][ T5] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 34.354191][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 34.361219][ T168] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 34.376213][ T95] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 34.384428][ T367] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 34.391987][ T12] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 34.453716][ T83] usb 1-1: Using ep0 maxpacket: 32 [ 34.483608][ T5] usb 6-1: Using ep0 maxpacket: 32 [ 34.488919][ T95] usb 4-1: Using ep0 maxpacket: 32 [ 34.494248][ T12] usb 2-1: Using ep0 maxpacket: 32 [ 34.499428][ T367] usb 5-1: Using ep0 maxpacket: 32 [ 34.504770][ T168] usb 3-1: Using ep0 maxpacket: 32 [ 34.573579][ T83] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.582851][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.595432][ T83] usb 1-1: config 0 descriptor?? [ 34.613745][ T12] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.622846][ T12] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.632524][ T12] usb 2-1: config 0 descriptor?? [ 34.641703][ T367] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.651051][ T367] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.659141][ T95] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.668218][ T95] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.676459][ T5] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.685569][ T5] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.693634][ T168] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.702651][ T168] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.713176][ T5] usb 6-1: config 0 descriptor?? [ 34.718933][ T95] usb 4-1: config 0 descriptor?? [ 34.724856][ T168] usb 3-1: config 0 descriptor?? [ 34.730603][ T367] usb 5-1: config 0 descriptor?? [ 34.854564][ T83] hso 1-1:0.0: Failed to find BULK IN ep [ 34.964242][ T12] hso 2-1:0.0: Failed to find BULK IN ep [ 34.994088][ T367] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.001571][ T367] CPU: 0 PID: 367 Comm: kworker/0:4 Not tainted 5.6.0-rc7-syzkaller #0 [ 35.009790][ T367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.019832][ T367] Workqueue: usb_hub_wq hub_event [ 35.024885][ T367] Call Trace: [ 35.028304][ T367] dump_stack+0xef/0x16e [ 35.032541][ T367] sysfs_warn_dup.cold+0x1c/0x2d [ 35.037461][ T367] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 35.043550][ T367] sysfs_create_link+0x61/0xc0 [ 35.048304][ T367] device_add+0x756/0x1bf0 [ 35.052728][ T367] ? lockdep_init_map+0x1b0/0x5e0 [ 35.057750][ T367] ? device_link_remove+0x110/0x110 [ 35.062929][ T367] ? __init_waitqueue_head+0x31/0x90 [ 35.068204][ T367] tty_register_device_attr+0x341/0x6f0 [ 35.073730][ T367] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 35.079253][ T367] ? mark_held_locks+0x9f/0xe0 [ 35.083999][ T367] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.089803][ T367] ? tty_port_register_device_attr+0xb9/0x110 [ 35.095858][ T367] hso_serial_common_create+0x113/0x710 [ 35.101410][ T367] ? kasan_unpoison_shadow+0x30/0x40 [ 35.106677][ T367] hso_probe+0xc93/0x1b7b [ 35.110990][ T367] usb_probe_interface+0x310/0x800 [ 35.116083][ T367] ? usb_probe_device+0x230/0x230 [ 35.121095][ T367] really_probe+0x290/0xac0 [ 35.125579][ T367] driver_probe_device+0x223/0x350 [ 35.130679][ T367] __device_attach_driver+0x1d1/0x290 [ 35.136039][ T367] ? driver_allows_async_probing+0x160/0x160 [ 35.142036][ T367] bus_for_each_drv+0x162/0x1e0 [ 35.146877][ T367] ? bus_rescan_devices+0x20/0x20 [ 35.151893][ T367] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.157689][ T367] ? lockdep_hardirqs_on+0x382/0x580 [ 35.162962][ T367] __device_attach+0x217/0x390 [ 35.167473][ T83] usb 2-1: USB disconnect, device number 2 [ 35.167727][ T367] ? device_bind_driver+0xd0/0xd0 [ 35.178678][ T367] bus_probe_device+0x1e4/0x290 [ 35.183562][ T367] device_add+0x1459/0x1bf0 [ 35.188070][ T367] ? wait_for_completion+0x3c0/0x3c0 [ 35.193355][ T367] ? device_link_remove+0x110/0x110 [ 35.198550][ T367] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.204342][ T367] usb_set_configuration+0xece/0x1840 [ 35.209704][ T367] usb_generic_driver_probe+0x9d/0xe0 [ 35.215058][ T367] usb_probe_device+0xd9/0x230 [ 35.219804][ T367] ? usb_suspend+0x5f0/0x5f0 [ 35.224374][ T367] really_probe+0x290/0xac0 [ 35.228857][ T367] driver_probe_device+0x223/0x350 [ 35.233965][ T367] __device_attach_driver+0x1d1/0x290 [ 35.239316][ T367] ? driver_allows_async_probing+0x160/0x160 [ 35.245280][ T367] bus_for_each_drv+0x162/0x1e0 [ 35.250115][ T367] ? bus_rescan_devices+0x20/0x20 [ 35.255154][ T367] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.260942][ T367] ? lockdep_hardirqs_on+0x382/0x580 [ 35.266204][ T367] __device_attach+0x217/0x390 [ 35.270945][ T367] ? device_bind_driver+0xd0/0xd0 [ 35.275965][ T367] bus_probe_device+0x1e4/0x290 [ 35.280796][ T367] device_add+0x1459/0x1bf0 [ 35.285291][ T367] ? device_link_remove+0x110/0x110 [ 35.290468][ T367] usb_new_device.cold+0x540/0xcd0 [ 35.295559][ T367] hub_event+0x21cb/0x4300 [ 35.299953][ T367] ? hub_port_debounce+0x350/0x350 [ 35.305041][ T367] ? find_held_lock+0x2d/0x110 [ 35.309797][ T367] ? mark_held_locks+0xe0/0xe0 executing program [ 35.314544][ T367] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 35.320082][ T367] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 35.325352][ T367] process_one_work+0x94b/0x1620 [ 35.330269][ T367] ? __wake_up_common+0x650/0x650 [ 35.335301][ T367] ? pwq_dec_nr_in_flight+0x310/0x310 [ 35.340668][ T367] worker_thread+0x96/0xe20 [ 35.345161][ T367] ? process_one_work+0x1620/0x1620 [ 35.350357][ T367] kthread+0x318/0x420 [ 35.354415][ T367] ? kthread_create_on_node+0xf0/0xf0 [ 35.359768][ T367] ret_from_fork+0x24/0x30 [ 35.365132][ T5] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.372628][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc7-syzkaller #0 [ 35.379474][ T17] usb 1-1: USB disconnect, device number 2 [ 35.380686][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.380700][ T5] Workqueue: usb_hub_wq hub_event [ 35.380707][ T5] Call Trace: [ 35.380721][ T5] dump_stack+0xef/0x16e [ 35.380735][ T5] sysfs_warn_dup.cold+0x1c/0x2d [ 35.380752][ T5] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 35.420086][ T5] sysfs_create_link+0x61/0xc0 [ 35.424853][ T5] device_add+0x756/0x1bf0 [ 35.429275][ T5] ? lockdep_init_map+0x1b0/0x5e0 [ 35.434302][ T5] ? device_link_remove+0x110/0x110 [ 35.439622][ T5] ? __init_waitqueue_head+0x31/0x90 [ 35.444912][ T5] tty_register_device_attr+0x341/0x6f0 [ 35.450466][ T5] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 35.456013][ T5] ? mark_held_locks+0x9f/0xe0 executing program executing program executing program executing program executing program [ 35.460782][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.466705][ T5] ? tty_port_register_device_attr+0xb9/0x110 [ 35.472800][ T5] hso_serial_common_create+0x113/0x710 [ 35.478349][ T5] ? kasan_unpoison_shadow+0x30/0x40 [ 35.483639][ T5] hso_probe+0xc93/0x1b7b [ 35.487973][ T5] usb_probe_interface+0x310/0x800 [ 35.493087][ T5] ? usb_probe_device+0x230/0x230 [ 35.498109][ T5] really_probe+0x290/0xac0 [ 35.502611][ T5] driver_probe_device+0x223/0x350 [ 35.507721][ T5] __device_attach_driver+0x1d1/0x290 [ 35.513086][ T5] ? driver_allows_async_probing+0x160/0x160 [ 35.519105][ T5] bus_for_each_drv+0x162/0x1e0 [ 35.523936][ T5] ? bus_rescan_devices+0x20/0x20 [ 35.528989][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.534781][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 35.540052][ T5] __device_attach+0x217/0x390 [ 35.544797][ T5] ? device_bind_driver+0xd0/0xd0 [ 35.549802][ T5] bus_probe_device+0x1e4/0x290 [ 35.554633][ T5] device_add+0x1459/0x1bf0 [ 35.559118][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 35.564440][ T5] ? device_link_remove+0x110/0x110 [ 35.569616][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.575507][ T5] usb_set_configuration+0xece/0x1840 [ 35.580864][ T5] usb_generic_driver_probe+0x9d/0xe0 [ 35.586227][ T5] usb_probe_device+0xd9/0x230 [ 35.591017][ T5] ? usb_suspend+0x5f0/0x5f0 [ 35.595601][ T5] really_probe+0x290/0xac0 [ 35.600094][ T5] driver_probe_device+0x223/0x350 [ 35.605187][ T5] __device_attach_driver+0x1d1/0x290 [ 35.610542][ T5] ? driver_allows_async_probing+0x160/0x160 [ 35.616558][ T5] bus_for_each_drv+0x162/0x1e0 [ 35.621401][ T5] ? bus_rescan_devices+0x20/0x20 [ 35.626407][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.632200][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 35.637475][ T5] __device_attach+0x217/0x390 [ 35.642220][ T5] ? device_bind_driver+0xd0/0xd0 [ 35.647228][ T5] bus_probe_device+0x1e4/0x290 [ 35.652105][ T5] device_add+0x1459/0x1bf0 [ 35.656590][ T5] ? device_link_remove+0x110/0x110 [ 35.661770][ T5] usb_new_device.cold+0x540/0xcd0 [ 35.666896][ T5] hub_event+0x21cb/0x4300 [ 35.671313][ T5] ? hub_port_debounce+0x350/0x350 [ 35.676406][ T5] ? find_held_lock+0x2d/0x110 [ 35.681158][ T5] ? mark_held_locks+0xe0/0xe0 [ 35.685933][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 35.691455][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 35.696730][ T5] process_one_work+0x94b/0x1620 [ 35.701655][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 35.707063][ T5] ? do_raw_spin_lock+0x129/0x290 [ 35.712071][ T5] worker_thread+0x96/0xe20 [ 35.713116][ T83] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 35.716558][ T5] ? process_one_work+0x1620/0x1620 [ 35.716571][ T5] kthread+0x318/0x420 [ 35.716583][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 35.716596][ T5] ret_from_fork+0x24/0x30 [ 35.717202][ T168] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.743199][ T17] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 35.750588][ T168] CPU: 0 PID: 168 Comm: kworker/0:3 Not tainted 5.6.0-rc7-syzkaller #0 [ 35.750596][ T168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.750609][ T168] Workqueue: usb_hub_wq hub_event [ 35.750616][ T168] Call Trace: [ 35.750630][ T168] dump_stack+0xef/0x16e [ 35.750644][ T168] sysfs_warn_dup.cold+0x1c/0x2d [ 35.750656][ T168] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 35.750672][ T168] sysfs_create_link+0x61/0xc0 [ 35.804631][ T168] device_add+0x756/0x1bf0 [ 35.809035][ T168] ? lockdep_init_map+0x1b0/0x5e0 [ 35.813159][ T83] usb 2-1: Using ep0 maxpacket: 32 [ 35.814043][ T168] ? device_link_remove+0x110/0x110 [ 35.814057][ T168] ? __init_waitqueue_head+0x31/0x90 [ 35.814072][ T168] tty_register_device_attr+0x341/0x6f0 [ 35.814086][ T168] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 35.814098][ T168] ? mark_held_locks+0x9f/0xe0 [ 35.814110][ T168] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.814125][ T168] ? tty_port_register_device_attr+0xb9/0x110 [ 35.843168][ T17] usb 1-1: Using ep0 maxpacket: 32 [ 35.845581][ T168] hso_serial_common_create+0x113/0x710 [ 35.845596][ T168] ? kasan_unpoison_shadow+0x30/0x40 [ 35.845608][ T168] hso_probe+0xc93/0x1b7b [ 35.845622][ T168] usb_probe_interface+0x310/0x800 [ 35.845634][ T168] ? usb_probe_device+0x230/0x230 [ 35.845649][ T168] really_probe+0x290/0xac0 [ 35.892302][ T168] driver_probe_device+0x223/0x350 [ 35.897401][ T168] __device_attach_driver+0x1d1/0x290 [ 35.902762][ T168] ? driver_allows_async_probing+0x160/0x160 [ 35.908746][ T168] bus_for_each_drv+0x162/0x1e0 [ 35.913577][ T168] ? bus_rescan_devices+0x20/0x20 [ 35.918580][ T168] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.924365][ T168] ? lockdep_hardirqs_on+0x382/0x580 [ 35.929630][ T168] __device_attach+0x217/0x390 [ 35.933137][ T83] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 35.934390][ T168] ? device_bind_driver+0xd0/0xd0 [ 35.934401][ T168] bus_probe_device+0x1e4/0x290 [ 35.934415][ T168] device_add+0x1459/0x1bf0 [ 35.934428][ T168] ? wait_for_completion+0x3c0/0x3c0 [ 35.934440][ T168] ? device_link_remove+0x110/0x110 [ 35.934451][ T168] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.934468][ T168] usb_set_configuration+0xece/0x1840 [ 35.943586][ T83] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.948504][ T168] usb_generic_driver_probe+0x9d/0xe0 [ 35.963274][ T17] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 35.968267][ T168] usb_probe_device+0xd9/0x230 [ 35.968282][ T168] ? usb_suspend+0x5f0/0x5f0 [ 35.968293][ T168] really_probe+0x290/0xac0 [ 35.968305][ T168] driver_probe_device+0x223/0x350 [ 35.968315][ T168] __device_attach_driver+0x1d1/0x290 [ 35.968331][ T168] ? driver_allows_async_probing+0x160/0x160 [ 35.974168][ T17] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.979469][ T168] bus_for_each_drv+0x162/0x1e0 [ 35.979485][ T168] ? bus_rescan_devices+0x20/0x20 [ 35.991929][ T83] usb 2-1: config 0 descriptor?? [ 35.992793][ T168] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.992808][ T168] ? lockdep_hardirqs_on+0x382/0x580 [ 35.992823][ T168] __device_attach+0x217/0x390 [ 36.019969][ T17] usb 1-1: config 0 descriptor?? [ 36.020743][ T168] ? device_bind_driver+0xd0/0xd0 [ 36.020756][ T168] bus_probe_device+0x1e4/0x290 [ 36.020770][ T168] device_add+0x1459/0x1bf0 [ 36.020783][ T168] ? device_link_remove+0x110/0x110 [ 36.020796][ T168] usb_new_device.cold+0x540/0xcd0 [ 36.020806][ T168] hub_event+0x21cb/0x4300 [ 36.020821][ T168] ? hub_port_debounce+0x350/0x350 [ 36.109797][ T168] ? find_held_lock+0x2d/0x110 [ 36.114554][ T168] ? mark_held_locks+0xe0/0xe0 [ 36.119300][ T168] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 36.124823][ T168] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 36.130083][ T168] process_one_work+0x94b/0x1620 [ 36.135007][ T168] ? pwq_dec_nr_in_flight+0x310/0x310 [ 36.140367][ T168] ? do_raw_spin_lock+0x129/0x290 [ 36.145387][ T168] worker_thread+0x96/0xe20 [ 36.149867][ T168] ? process_one_work+0x1620/0x1620 [ 36.155126][ T168] kthread+0x318/0x420 [ 36.159171][ T168] ? kthread_create_on_node+0xf0/0xf0 [ 36.164630][ T168] ret_from_fork+0x24/0x30 [ 36.170170][ T95] hso 4-1:0.0: Failed to find BULK IN ep [ 36.179203][ T95] usb 4-1: USB disconnect, device number 2 [ 36.185188][ T5] hso 6-1:0.0: Failed to find BULK IN ep [ 36.190923][ T5] general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN [ 36.201922][ T5] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 36.210349][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc7-syzkaller #0 [ 36.218483][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.228518][ T5] Workqueue: usb_hub_wq hub_event [ 36.233519][ T5] RIP: 0010:cdev_del+0x22/0x90 [ 36.238261][ T5] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 73 84 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 [ 36.257846][ T5] RSP: 0018:ffff8881da1df240 EFLAGS: 00010207 [ 36.263941][ T5] RAX: dffffc0000000000 RBX: ffff8881d50e3900 RCX: ffffffff8216a90e [ 36.271898][ T5] RDX: 000000000000000c RSI: ffffffff816cd3ad RDI: 0000000000000064 [ 36.273709][ T83] hso 2-1:0.0: Failed to find BULK IN ep [ 36.279857][ T5] RBP: 0000000000000000 R08: ffff8881da196200 R09: fffffbfff126708f [ 36.293423][ T5] R10: fffffbfff126708e R11: ffffffff89338477 R12: 0000000000000000 [ 36.297100][ T17] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 36.301394][ T5] R13: ffff8881d51bc000 R14: ffff8881ce73c000 R15: ffff8881ce421070 [ 36.308872][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.6.0-rc7-syzkaller #0 [ 36.316796][ T5] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 36.324921][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.333828][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.343868][ T17] Workqueue: usb_hub_wq hub_event [ 36.350427][ T5] CR2: 000055cfa15b3c58 CR3: 00000001c44a0000 CR4: 00000000001406f0 [ 36.355424][ T17] Call Trace: [ 36.363379][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.366659][ T17] dump_stack+0xef/0x16e [ 36.374609][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.378830][ T17] sysfs_warn_dup.cold+0x1c/0x2d [ 36.386802][ T5] Call Trace: [ 36.391721][ T17] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 36.394995][ T5] tty_unregister_device+0x10d/0x1a0 [ 36.401047][ T17] sysfs_create_link+0x61/0xc0 [ 36.406317][ T5] hso_probe.cold+0x6e/0x14c [ 36.411058][ T17] device_add+0x756/0x1bf0 [ 36.415623][ T5] usb_probe_interface+0x310/0x800 [ 36.420012][ T17] ? lockdep_init_map+0xcb/0x5e0 [ 36.425101][ T5] ? usb_probe_device+0x230/0x230 [ 36.430016][ T17] ? device_link_remove+0x110/0x110 [ 36.435013][ T5] really_probe+0x290/0xac0 [ 36.440205][ T17] ? __init_waitqueue_head+0x31/0x90 [ 36.444684][ T5] driver_probe_device+0x223/0x350 [ 36.449944][ T17] tty_register_device_attr+0x341/0x6f0 [ 36.455027][ T5] __device_attach_driver+0x1d1/0x290 [ 36.460548][ T17] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 36.465900][ T5] ? driver_allows_async_probing+0x160/0x160 [ 36.471418][ T17] ? lock_downgrade+0x6e0/0x6e0 [ 36.477374][ T5] bus_for_each_drv+0x162/0x1e0 [ 36.482193][ T17] ? lock_acquire+0x130/0x340 [ 36.487037][ T5] ? bus_rescan_devices+0x20/0x20 [ 36.491684][ T17] ? hso_serial_common_create+0x4f/0x710 [ 36.496680][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.502284][ T17] ? trace_hardirqs_on+0x55/0x200 [ 36.508059][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 36.513058][ T17] ? tty_port_register_device_attr+0xb9/0x110 [ 36.518313][ T5] __device_attach+0x217/0x390 [ 36.524352][ T17] hso_serial_common_create+0x113/0x710 [ 36.529100][ T5] ? device_bind_driver+0xd0/0xd0 [ 36.534651][ T17] ? kasan_unpoison_shadow+0x30/0x40 [ 36.539650][ T5] bus_probe_device+0x1e4/0x290 [ 36.544914][ T17] hso_probe+0xc93/0x1b7b [ 36.549750][ T5] device_add+0x1459/0x1bf0 [ 36.554064][ T17] usb_probe_interface+0x310/0x800 [ 36.558543][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 36.563628][ T17] ? usb_probe_device+0x230/0x230 [ 36.568887][ T5] ? device_link_remove+0x110/0x110 [ 36.573884][ T17] really_probe+0x290/0xac0 [ 36.579059][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.583535][ T17] driver_probe_device+0x223/0x350 [ 36.589318][ T5] usb_set_configuration+0xece/0x1840 [ 36.594412][ T17] __device_attach_driver+0x1d1/0x290 [ 36.599771][ T5] usb_generic_driver_probe+0x9d/0xe0 [ 36.605123][ T17] ? driver_allows_async_probing+0x160/0x160 [ 36.610471][ T5] usb_probe_device+0xd9/0x230 [ 36.616421][ T17] bus_for_each_drv+0x162/0x1e0 [ 36.621156][ T5] ? usb_suspend+0x5f0/0x5f0 [ 36.625979][ T17] ? bus_rescan_devices+0x20/0x20 [ 36.630537][ T5] really_probe+0x290/0xac0 [ 36.635534][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.640007][ T5] driver_probe_device+0x223/0x350 [ 36.645785][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 36.650868][ T5] __device_attach_driver+0x1d1/0x290 [ 36.656131][ T17] __device_attach+0x217/0x390 [ 36.661474][ T5] ? driver_allows_async_probing+0x160/0x160 [ 36.666210][ T17] ? device_bind_driver+0xd0/0xd0 [ 36.672165][ T5] bus_for_each_drv+0x162/0x1e0 [ 36.677159][ T17] bus_probe_device+0x1e4/0x290 [ 36.681985][ T5] ? bus_rescan_devices+0x20/0x20 [ 36.686806][ T17] device_add+0x1459/0x1bf0 [ 36.691805][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.696294][ T17] ? wait_for_completion+0x3c0/0x3c0 [ 36.702091][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 36.707359][ T17] ? device_link_remove+0x110/0x110 [ 36.712636][ T5] __device_attach+0x217/0x390 [ 36.717810][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.722546][ T5] ? device_bind_driver+0xd0/0xd0 [ 36.728329][ T17] usb_set_configuration+0xece/0x1840 [ 36.733328][ T5] bus_probe_device+0x1e4/0x290 [ 36.738677][ T17] usb_generic_driver_probe+0x9d/0xe0 [ 36.743503][ T5] device_add+0x1459/0x1bf0 [ 36.748848][ T17] usb_probe_device+0xd9/0x230 [ 36.753324][ T5] ? device_link_remove+0x110/0x110 [ 36.758093][ T17] ? usb_suspend+0x5f0/0x5f0 [ 36.763278][ T5] usb_new_device.cold+0x540/0xcd0 [ 36.767842][ T17] really_probe+0x290/0xac0 [ 36.772930][ T5] hub_event+0x21cb/0x4300 [ 36.777406][ T17] driver_probe_device+0x223/0x350 [ 36.781797][ T5] ? hub_port_debounce+0x350/0x350 [ 36.786882][ T17] __device_attach_driver+0x1d1/0x290 [ 36.791965][ T5] ? find_held_lock+0x2d/0x110 [ 36.797322][ T17] ? driver_allows_async_probing+0x160/0x160 [ 36.802064][ T5] ? mark_held_locks+0xe0/0xe0 [ 36.808140][ T17] bus_for_each_drv+0x162/0x1e0 [ 36.812889][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 36.817716][ T17] ? bus_rescan_devices+0x20/0x20 [ 36.823235][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 36.828228][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.833487][ T5] process_one_work+0x94b/0x1620 [ 36.839262][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 36.844170][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 36.849424][ T17] __device_attach+0x217/0x390 [ 36.854794][ T5] ? do_raw_spin_lock+0x129/0x290 [ 36.859541][ T17] ? device_bind_driver+0xd0/0xd0 [ 36.864559][ T5] worker_thread+0x96/0xe20 [ 36.869555][ T17] bus_probe_device+0x1e4/0x290 [ 36.874037][ T5] ? process_one_work+0x1620/0x1620 [ 36.878872][ T17] device_add+0x1459/0x1bf0 [ 36.884045][ T5] kthread+0x318/0x420 [ 36.888518][ T17] ? device_link_remove+0x110/0x110 [ 36.892559][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 36.897729][ T17] usb_new_device.cold+0x540/0xcd0 [ 36.903073][ T5] ret_from_fork+0x24/0x30 [ 36.908170][ T17] hub_event+0x21cb/0x4300 [ 36.912554][ T5] Modules linked in: [ 36.916962][ T17] ? hub_port_debounce+0x350/0x350 [ 36.920928][ T5] ---[ end trace 909508cab4bbd4c1 ]--- [ 36.925909][ T17] ? find_held_lock+0x2d/0x110 [ 36.925917][ T17] ? mark_held_locks+0xe0/0xe0 [ 36.925933][ T17] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 36.931365][ T5] RIP: 0010:cdev_del+0x22/0x90 [ 36.936097][ T17] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 36.936108][ T17] process_one_work+0x94b/0x1620 [ 36.936128][ T17] ? pwq_dec_nr_in_flight+0x310/0x310 executing program [ 36.940871][ T5] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 73 84 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 [ 36.946385][ T17] ? do_raw_spin_lock+0x129/0x290 [ 36.946401][ T17] worker_thread+0x96/0xe20 [ 36.951134][ T5] RSP: 0018:ffff8881da1df240 EFLAGS: 00010207 [ 36.956409][ T17] ? process_one_work+0x1620/0x1620 [ 36.956423][ T17] kthread+0x318/0x420 [ 36.961342][ T5] RAX: dffffc0000000000 RBX: ffff8881d50e3900 RCX: ffffffff8216a90e [ 36.966689][ T17] ? kthread_create_on_node+0xf0/0xf0 [ 36.966697][ T17] ret_from_fork+0x24/0x30 [ 36.979536][ T83] usb 2-1: USB disconnect, device number 3 [ 36.986414][ T5] RDX: 000000000000000c RSI: ffffffff816cd3ad RDI: 0000000000000064 [ 37.026875][ T17] hso 1-1:0.0: Failed to find BULK IN ep [ 37.029078][ T5] RBP: 0000000000000000 R08: ffff8881da196200 R09: fffffbfff126708f [ 37.029085][ T5] R10: fffffbfff126708e R11: ffffffff89338477 R12: 0000000000000000 [ 37.029092][ T5] R13: ffff8881d51bc000 R14: ffff8881ce73c000 R15: ffff8881ce421070 [ 37.029098][ T5] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 37.029113][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.035004][ T17] general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#2] SMP KASAN [ 37.043009][ T5] CR2: 000055cfa15b3c58 CR3: 00000001c44a0000 CR4: 00000000001406f0 [ 37.048605][ T17] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 37.056577][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.065086][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Tainted: G D 5.6.0-rc7-syzkaller #0 [ 37.065097][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.073055][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.081955][ T17] Workqueue: usb_hub_wq hub_event [ 37.088526][ T5] Kernel panic - not syncing: Fatal exception [ 37.099614][ T17] RIP: 0010:cdev_del+0x22/0x90 [ 37.167151][ T17] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 73 84 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 [ 37.186745][ T17] RSP: 0018:ffff8881da267240 EFLAGS: 00010207 [ 37.192807][ T17] RAX: dffffc0000000000 RBX: ffff8881d50e3900 RCX: ffffffff8216a90e [ 37.200759][ T17] RDX: 000000000000000c RSI: ffffffff816cd3ad RDI: 0000000000000064 [ 37.208707][ T17] RBP: 0000000000000000 R08: ffff8881da24b100 R09: ffffed103b45cb27 [ 37.216656][ T17] R10: ffffed103b45cb26 R11: ffff8881da2e5933 R12: 0000000000000000 [ 37.224606][ T17] R13: ffff8881d51bc000 R14: ffff8881cd1a8000 R15: ffff8881cd479070 [ 37.232566][ T17] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 37.241496][ T17] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.248065][ T17] CR2: 00007fa81c87c000 CR3: 00000001d259b000 CR4: 00000000001406e0 [ 37.256023][ T17] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.263983][ T17] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.271931][ T17] Call Trace: [ 37.275243][ T17] tty_unregister_device+0x10d/0x1a0 [ 37.280510][ T17] hso_probe.cold+0x6e/0x14c [ 37.285084][ T17] usb_probe_interface+0x310/0x800 [ 37.290178][ T17] ? usb_probe_device+0x230/0x230 [ 37.295181][ T17] really_probe+0x290/0xac0 [ 37.299663][ T17] driver_probe_device+0x223/0x350 [ 37.304756][ T17] __device_attach_driver+0x1d1/0x290 [ 37.310121][ T17] ? driver_allows_async_probing+0x160/0x160 [ 37.316091][ T17] bus_for_each_drv+0x162/0x1e0 [ 37.320940][ T17] ? bus_rescan_devices+0x20/0x20 [ 37.326068][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 37.331860][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 37.337127][ T17] __device_attach+0x217/0x390 [ 37.341873][ T17] ? device_bind_driver+0xd0/0xd0 [ 37.346875][ T17] bus_probe_device+0x1e4/0x290 [ 37.351706][ T17] device_add+0x1459/0x1bf0 [ 37.356188][ T17] ? wait_for_completion+0x3c0/0x3c0 [ 37.361449][ T17] ? device_link_remove+0x110/0x110 [ 37.366624][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 37.372428][ T17] usb_set_configuration+0xece/0x1840 [ 37.377783][ T17] usb_generic_driver_probe+0x9d/0xe0 [ 37.383136][ T17] usb_probe_device+0xd9/0x230 [ 37.387885][ T17] ? usb_suspend+0x5f0/0x5f0 [ 37.392553][ T17] really_probe+0x290/0xac0 [ 37.397045][ T17] driver_probe_device+0x223/0x350 [ 37.402155][ T17] __device_attach_driver+0x1d1/0x290 [ 37.407506][ T17] ? driver_allows_async_probing+0x160/0x160 [ 37.413464][ T17] bus_for_each_drv+0x162/0x1e0 [ 37.418295][ T17] ? bus_rescan_devices+0x20/0x20 [ 37.423297][ T17] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 37.429081][ T17] ? lockdep_hardirqs_on+0x382/0x580 [ 37.434344][ T17] __device_attach+0x217/0x390 [ 37.439084][ T17] ? device_bind_driver+0xd0/0xd0 [ 37.444115][ T17] bus_probe_device+0x1e4/0x290 [ 37.448943][ T17] device_add+0x1459/0x1bf0 [ 37.453430][ T17] ? device_link_remove+0x110/0x110 [ 37.458620][ T17] usb_new_device.cold+0x540/0xcd0 [ 37.463731][ T17] hub_event+0x21cb/0x4300 [ 37.468237][ T17] ? hub_port_debounce+0x350/0x350 [ 37.473349][ T17] ? find_held_lock+0x2d/0x110 [ 37.478096][ T17] ? mark_held_locks+0xe0/0xe0 [ 37.482843][ T17] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 37.488376][ T17] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 37.493649][ T17] process_one_work+0x94b/0x1620 [ 37.498575][ T17] ? pwq_dec_nr_in_flight+0x310/0x310 [ 37.503938][ T17] ? do_raw_spin_lock+0x129/0x290 [ 37.508954][ T17] worker_thread+0x96/0xe20 [ 37.513569][ T17] ? process_one_work+0x1620/0x1620 [ 37.518750][ T17] kthread+0x318/0x420 [ 37.522812][ T17] ? kthread_create_on_node+0xf0/0xf0 [ 37.528164][ T17] ret_from_fork+0x24/0x30 [ 37.532553][ T17] Modules linked in: [ 37.536982][ T5] Kernel Offset: disabled [ 37.541304][ T5] Rebooting in 86400 seconds..