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 '10.128.1.13' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.671562][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 33.681543][ T1809] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 33.689161][ T5] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 33.696725][ T95] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 33.704250][ T12] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 33.711806][ T1811] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 33.761938][ T94] usb 1-1: Using ep0 maxpacket: 32 [ 33.801844][ T95] usb 6-1: Using ep0 maxpacket: 32 [ 33.807020][ T1809] usb 2-1: Using ep0 maxpacket: 32 [ 33.812263][ T5] usb 5-1: Using ep0 maxpacket: 32 [ 33.817481][ T12] usb 3-1: Using ep0 maxpacket: 32 [ 33.822681][ T1811] usb 4-1: Using ep0 maxpacket: 32 [ 33.891648][ T94] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 33.900830][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 33.910330][ T94] usb 1-1: config 0 descriptor?? [ 33.931725][ T5] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 33.940838][ T5] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 33.949113][ T95] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 33.958288][ T95] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 33.966380][ T12] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 33.975544][ T12] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 33.983608][ T1811] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 33.992681][ T1811] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.000699][ T1809] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 34.009765][ T1809] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.018672][ T5] usb 5-1: config 0 descriptor?? [ 34.025590][ T1811] usb 4-1: config 0 descriptor?? [ 34.030916][ T12] usb 3-1: config 0 descriptor?? [ 34.036243][ T1809] usb 2-1: config 0 descriptor?? [ 34.041658][ T95] usb 6-1: config 0 descriptor?? [ 34.172831][ T94] hso 1-1:0.0: Failed to find BULK IN ep [ 34.282335][ T5] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 34.289888][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.5.0-rc7-syzkaller #0 [ 34.297942][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.307988][ T5] Workqueue: usb_hub_wq hub_event [ 34.312992][ T5] Call Trace: [ 34.316265][ T5] dump_stack+0xef/0x16e [ 34.320493][ T5] sysfs_warn_dup.cold+0x1c/0x2d [ 34.325413][ T5] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 34.331481][ T5] sysfs_create_link+0x61/0xc0 [ 34.336244][ T5] device_add+0x756/0x1bf0 [ 34.340687][ T5] ? lockdep_init_map+0x1b0/0x5e0 [ 34.345701][ T5] ? device_link_remove+0x110/0x110 [ 34.350885][ T5] ? __init_waitqueue_head+0x31/0x90 [ 34.356155][ T5] tty_register_device_attr+0x341/0x6f0 [ 34.361685][ T5] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 34.367215][ T5] ? mark_held_locks+0x9f/0xe0 [ 34.371963][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.377817][ T5] ? tty_port_register_device_attr+0xb9/0x110 [ 34.383872][ T5] hso_serial_common_create+0x113/0x710 [ 34.389406][ T5] ? kasan_unpoison_shadow+0x30/0x40 [ 34.394688][ T5] hso_probe+0xc93/0x1b7b [ 34.399011][ T5] usb_probe_interface+0x310/0x800 [ 34.404157][ T5] ? usb_probe_device+0x140/0x140 [ 34.409165][ T5] really_probe+0x290/0xad0 [ 34.413675][ T5] driver_probe_device+0x223/0x350 [ 34.418785][ T5] __device_attach_driver+0x1d1/0x290 [ 34.424186][ T5] ? driver_allows_async_probing+0x160/0x160 [ 34.430150][ T5] bus_for_each_drv+0x162/0x1e0 [ 34.434984][ T5] ? bus_rescan_devices+0x20/0x20 [ 34.439987][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.445788][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 34.451058][ T5] __device_attach+0x217/0x390 [ 34.455815][ T5] ? device_bind_driver+0xd0/0xd0 [ 34.460831][ T5] bus_probe_device+0x1e4/0x290 [ 34.465662][ T5] device_add+0x1459/0x1bf0 [ 34.470178][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 34.475460][ T5] ? device_link_remove+0x110/0x110 [ 34.480636][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.486433][ T5] usb_set_configuration+0xe47/0x17d0 [ 34.491798][ T5] generic_probe+0x9d/0xd5 [ 34.496190][ T5] usb_probe_device+0xaf/0x140 [ 34.500940][ T5] ? usb_suspend+0x5f0/0x5f0 [ 34.505515][ T5] really_probe+0x290/0xad0 [ 34.510006][ T5] driver_probe_device+0x223/0x350 [ 34.515097][ T5] __device_attach_driver+0x1d1/0x290 [ 34.520458][ T5] ? driver_allows_async_probing+0x160/0x160 [ 34.526423][ T5] bus_for_each_drv+0x162/0x1e0 executing program executing program [ 34.531260][ T5] ? bus_rescan_devices+0x20/0x20 [ 34.536270][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.542068][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 34.547341][ T5] __device_attach+0x217/0x390 [ 34.552107][ T5] ? device_bind_driver+0xd0/0xd0 [ 34.557109][ T5] bus_probe_device+0x1e4/0x290 [ 34.561939][ T5] device_add+0x1459/0x1bf0 [ 34.566432][ T5] ? device_link_remove+0x110/0x110 [ 34.571613][ T5] usb_new_device.cold+0x540/0xcd0 [ 34.576724][ T5] hub_event+0x21cb/0x4300 [ 34.581139][ T5] ? hub_port_debounce+0x350/0x350 [ 34.586232][ T5] ? find_held_lock+0x2d/0x110 [ 34.590980][ T5] ? mark_held_locks+0xe0/0xe0 [ 34.595729][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 34.601298][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 34.606565][ T5] process_one_work+0x945/0x15c0 [ 34.611500][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 34.616910][ T5] worker_thread+0x96/0xe20 [ 34.621399][ T5] ? process_one_work+0x15c0/0x15c0 [ 34.626594][ T5] kthread+0x318/0x420 executing program [ 34.630666][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 34.636058][ T5] ret_from_fork+0x24/0x30 [ 34.642138][ T1809] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 34.649612][ T1809] CPU: 0 PID: 1809 Comm: kworker/0:3 Not tainted 5.5.0-rc7-syzkaller #0 [ 34.657946][ T1809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.668107][ T1809] Workqueue: usb_hub_wq hub_event [ 34.673111][ T1809] Call Trace: [ 34.676384][ T1809] dump_stack+0xef/0x16e [ 34.680616][ T1809] sysfs_warn_dup.cold+0x1c/0x2d [ 34.685548][ T1809] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 34.691608][ T1809] sysfs_create_link+0x61/0xc0 [ 34.696359][ T1809] device_add+0x756/0x1bf0 [ 34.700761][ T1809] ? lockdep_init_map+0x1b0/0x5e0 [ 34.705769][ T1809] ? device_link_remove+0x110/0x110 [ 34.710980][ T1809] ? __init_waitqueue_head+0x31/0x90 [ 34.716261][ T1809] tty_register_device_attr+0x341/0x6f0 [ 34.721840][ T1809] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 34.727407][ T1809] ? mark_held_locks+0x9f/0xe0 [ 34.732164][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.737966][ T1809] ? tty_port_register_device_attr+0xb9/0x110 [ 34.744017][ T1809] hso_serial_common_create+0x113/0x710 [ 34.749550][ T1809] ? kasan_unpoison_shadow+0x30/0x40 [ 34.754822][ T1809] hso_probe+0xc93/0x1b7b [ 34.759147][ T1809] usb_probe_interface+0x310/0x800 [ 34.764237][ T1809] ? usb_probe_device+0x140/0x140 [ 34.769245][ T1809] really_probe+0x290/0xad0 [ 34.773735][ T1809] driver_probe_device+0x223/0x350 [ 34.778829][ T1809] __device_attach_driver+0x1d1/0x290 [ 34.784188][ T1809] ? driver_allows_async_probing+0x160/0x160 [ 34.790161][ T1809] bus_for_each_drv+0x162/0x1e0 [ 34.795045][ T1809] ? bus_rescan_devices+0x20/0x20 [ 34.800060][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.805865][ T1809] ? lockdep_hardirqs_on+0x382/0x580 [ 34.811143][ T1809] __device_attach+0x217/0x390 [ 34.815896][ T1809] ? device_bind_driver+0xd0/0xd0 [ 34.820912][ T1809] bus_probe_device+0x1e4/0x290 [ 34.825750][ T1809] device_add+0x1459/0x1bf0 executing program executing program executing program [ 34.830233][ T1809] ? wait_for_completion+0x3c0/0x3c0 [ 34.835503][ T1809] ? device_link_remove+0x110/0x110 [ 34.840687][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.846491][ T1809] usb_set_configuration+0xe47/0x17d0 [ 34.851864][ T1809] generic_probe+0x9d/0xd5 [ 34.856286][ T1809] usb_probe_device+0xaf/0x140 [ 34.861052][ T1809] ? usb_suspend+0x5f0/0x5f0 [ 34.865635][ T1809] really_probe+0x290/0xad0 [ 34.870129][ T1809] driver_probe_device+0x223/0x350 [ 34.875230][ T1809] __device_attach_driver+0x1d1/0x290 [ 34.880583][ T1809] ? driver_allows_async_probing+0x160/0x160 [ 34.886543][ T1809] bus_for_each_drv+0x162/0x1e0 [ 34.891385][ T1809] ? bus_rescan_devices+0x20/0x20 [ 34.896414][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 34.902288][ T1809] ? lockdep_hardirqs_on+0x382/0x580 [ 34.907557][ T1809] __device_attach+0x217/0x390 [ 34.912314][ T1809] ? device_bind_driver+0xd0/0xd0 [ 34.917324][ T1809] bus_probe_device+0x1e4/0x290 [ 34.922159][ T1809] device_add+0x1459/0x1bf0 [ 34.926654][ T1809] ? device_link_remove+0x110/0x110 [ 34.931847][ T1809] usb_new_device.cold+0x540/0xcd0 [ 34.936954][ T1809] hub_event+0x21cb/0x4300 [ 34.941375][ T1809] ? hub_port_debounce+0x350/0x350 [ 34.946516][ T1809] ? find_held_lock+0x2d/0x110 [ 34.951265][ T1809] ? mark_held_locks+0xe0/0xe0 [ 34.956022][ T1809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 34.961559][ T1809] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 34.966828][ T1809] process_one_work+0x945/0x15c0 [ 34.971759][ T1809] ? pwq_dec_nr_in_flight+0x310/0x310 [ 34.977108][ T1809] worker_thread+0x96/0xe20 [ 34.981591][ T1809] ? process_one_work+0x15c0/0x15c0 [ 34.986766][ T1809] kthread+0x318/0x420 [ 34.990826][ T1809] ? kthread_create_on_node+0xf0/0xf0 [ 34.996189][ T1809] ret_from_fork+0x24/0x30 [ 35.001211][ T12] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.008693][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.5.0-rc7-syzkaller #0 [ 35.016825][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.026880][ T12] Workqueue: usb_hub_wq hub_event [ 35.031889][ T12] Call Trace: [ 35.035164][ T12] dump_stack+0xef/0x16e [ 35.039388][ T12] sysfs_warn_dup.cold+0x1c/0x2d [ 35.044361][ T12] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 35.050404][ T12] sysfs_create_link+0x61/0xc0 [ 35.055157][ T12] device_add+0x756/0x1bf0 [ 35.059599][ T12] ? lockdep_init_map+0x1b0/0x5e0 [ 35.064615][ T12] ? device_link_remove+0x110/0x110 [ 35.069813][ T12] ? __init_waitqueue_head+0x31/0x90 [ 35.075119][ T12] tty_register_device_attr+0x341/0x6f0 [ 35.080654][ T12] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 35.086188][ T12] ? mark_held_locks+0x9f/0xe0 [ 35.090935][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.096719][ T12] ? tty_port_register_device_attr+0xb9/0x110 [ 35.102772][ T12] hso_serial_common_create+0x113/0x710 [ 35.108299][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 35.113580][ T12] hso_probe+0xc93/0x1b7b [ 35.117894][ T12] usb_probe_interface+0x310/0x800 [ 35.123039][ T12] ? usb_probe_device+0x140/0x140 [ 35.128050][ T12] really_probe+0x290/0xad0 [ 35.132574][ T12] driver_probe_device+0x223/0x350 [ 35.137671][ T12] __device_attach_driver+0x1d1/0x290 [ 35.143024][ T12] ? driver_allows_async_probing+0x160/0x160 [ 35.149055][ T12] bus_for_each_drv+0x162/0x1e0 [ 35.153905][ T12] ? bus_rescan_devices+0x20/0x20 [ 35.158918][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.164713][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 35.169995][ T12] __device_attach+0x217/0x390 [ 35.174738][ T12] ? device_bind_driver+0xd0/0xd0 [ 35.179741][ T12] bus_probe_device+0x1e4/0x290 [ 35.184619][ T12] device_add+0x1459/0x1bf0 [ 35.189152][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 35.194436][ T12] ? device_link_remove+0x110/0x110 [ 35.199678][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.205472][ T12] usb_set_configuration+0xe47/0x17d0 [ 35.210843][ T12] generic_probe+0x9d/0xd5 [ 35.215258][ T12] usb_probe_device+0xaf/0x140 [ 35.220020][ T12] ? usb_suspend+0x5f0/0x5f0 [ 35.224593][ T12] really_probe+0x290/0xad0 [ 35.229087][ T12] driver_probe_device+0x223/0x350 [ 35.234184][ T12] __device_attach_driver+0x1d1/0x290 [ 35.239538][ T12] ? driver_allows_async_probing+0x160/0x160 [ 35.245500][ T12] bus_for_each_drv+0x162/0x1e0 [ 35.250341][ T12] ? bus_rescan_devices+0x20/0x20 [ 35.255352][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.261233][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 35.266512][ T12] __device_attach+0x217/0x390 [ 35.271274][ T12] ? device_bind_driver+0xd0/0xd0 [ 35.276280][ T12] bus_probe_device+0x1e4/0x290 [ 35.281119][ T12] device_add+0x1459/0x1bf0 [ 35.285633][ T12] ? device_link_remove+0x110/0x110 [ 35.290839][ T12] usb_new_device.cold+0x540/0xcd0 [ 35.295951][ T12] hub_event+0x21cb/0x4300 [ 35.300378][ T12] ? hub_port_debounce+0x350/0x350 [ 35.305488][ T12] ? find_held_lock+0x2d/0x110 [ 35.310257][ T12] ? mark_held_locks+0xe0/0xe0 [ 35.315022][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 35.320553][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 35.325824][ T12] process_one_work+0x945/0x15c0 [ 35.330782][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 35.336178][ T12] ? do_raw_spin_lock+0x129/0x290 [ 35.341199][ T12] worker_thread+0x96/0xe20 [ 35.345708][ T12] ? process_one_work+0x15c0/0x15c0 [ 35.350895][ T12] kthread+0x318/0x420 [ 35.354950][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 35.360307][ T12] ret_from_fork+0x24/0x30 [ 35.365174][ T95] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 35.372661][ T95] CPU: 0 PID: 95 Comm: kworker/0:2 Not tainted 5.5.0-rc7-syzkaller #0 [ 35.380793][ T95] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.390844][ T95] Workqueue: usb_hub_wq hub_event [ 35.395858][ T95] Call Trace: [ 35.399134][ T95] dump_stack+0xef/0x16e [ 35.403359][ T95] sysfs_warn_dup.cold+0x1c/0x2d [ 35.408415][ T95] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 35.414481][ T95] sysfs_create_link+0x61/0xc0 [ 35.419231][ T95] device_add+0x756/0x1bf0 [ 35.423630][ T95] ? lockdep_init_map+0x1b0/0x5e0 [ 35.428650][ T95] ? device_link_remove+0x110/0x110 [ 35.433843][ T95] ? __init_waitqueue_head+0x31/0x90 [ 35.439222][ T95] tty_register_device_attr+0x341/0x6f0 [ 35.444756][ T95] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 35.450281][ T95] ? mark_held_locks+0x9f/0xe0 [ 35.455040][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.460862][ T95] ? tty_port_register_device_attr+0xb9/0x110 [ 35.467015][ T95] hso_serial_common_create+0x113/0x710 [ 35.472542][ T95] ? kasan_unpoison_shadow+0x30/0x40 [ 35.477814][ T95] hso_probe+0xc93/0x1b7b [ 35.482125][ T95] usb_probe_interface+0x310/0x800 [ 35.487264][ T95] ? usb_probe_device+0x140/0x140 [ 35.492320][ T95] really_probe+0x290/0xad0 [ 35.496811][ T95] driver_probe_device+0x223/0x350 [ 35.501913][ T95] __device_attach_driver+0x1d1/0x290 [ 35.507380][ T95] ? driver_allows_async_probing+0x160/0x160 [ 35.513350][ T95] bus_for_each_drv+0x162/0x1e0 [ 35.518195][ T95] ? bus_rescan_devices+0x20/0x20 [ 35.523206][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.529004][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 35.534284][ T95] __device_attach+0x217/0x390 [ 35.539036][ T95] ? device_bind_driver+0xd0/0xd0 [ 35.544063][ T95] bus_probe_device+0x1e4/0x290 [ 35.548901][ T95] device_add+0x1459/0x1bf0 [ 35.553389][ T95] ? wait_for_completion+0x3c0/0x3c0 [ 35.558663][ T95] ? device_link_remove+0x110/0x110 [ 35.563885][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.569675][ T95] usb_set_configuration+0xe47/0x17d0 [ 35.575029][ T95] generic_probe+0x9d/0xd5 [ 35.579422][ T95] usb_probe_device+0xaf/0x140 [ 35.584163][ T95] ? usb_suspend+0x5f0/0x5f0 [ 35.588728][ T95] really_probe+0x290/0xad0 [ 35.593217][ T95] driver_probe_device+0x223/0x350 [ 35.598315][ T95] __device_attach_driver+0x1d1/0x290 [ 35.603667][ T95] ? driver_allows_async_probing+0x160/0x160 [ 35.609633][ T95] bus_for_each_drv+0x162/0x1e0 [ 35.614459][ T95] ? bus_rescan_devices+0x20/0x20 [ 35.619459][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.625250][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 35.630510][ T95] __device_attach+0x217/0x390 [ 35.635262][ T95] ? device_bind_driver+0xd0/0xd0 [ 35.640261][ T95] bus_probe_device+0x1e4/0x290 [ 35.645124][ T95] device_add+0x1459/0x1bf0 [ 35.649602][ T95] ? device_link_remove+0x110/0x110 [ 35.654784][ T95] usb_new_device.cold+0x540/0xcd0 [ 35.659879][ T95] hub_event+0x21cb/0x4300 [ 35.664272][ T95] ? hub_port_debounce+0x350/0x350 [ 35.669363][ T95] ? find_held_lock+0x2d/0x110 [ 35.674110][ T95] ? mark_held_locks+0xe0/0xe0 [ 35.678914][ T95] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 35.684451][ T95] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 35.689716][ T95] process_one_work+0x945/0x15c0 [ 35.694638][ T95] ? pwq_dec_nr_in_flight+0x310/0x310 [ 35.700007][ T95] ? do_raw_spin_lock+0x129/0x290 [ 35.705062][ T95] worker_thread+0x96/0xe20 [ 35.709545][ T95] ? process_one_work+0x15c0/0x15c0 [ 35.714718][ T95] kthread+0x318/0x420 [ 35.718764][ T95] ? kthread_create_on_node+0xf0/0xf0 [ 35.724155][ T95] ret_from_fork+0x24/0x30 [ 35.729181][ T1811] hso 4-1:0.0: Failed to find BULK IN ep [ 35.737933][ T1811] usb 4-1: USB disconnect, device number 2 [ 35.744101][ T5] hso 5-1:0.0: Failed to find BULK IN ep [ 35.749850][ T5] kasan: CONFIG_KASAN_INLINE enabled [ 35.755299][ T5] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.763402][ T5] general protection fault: 0000 [#1] SMP KASAN [ 35.769630][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.5.0-rc7-syzkaller #0 [ 35.777665][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.787701][ T5] Workqueue: usb_hub_wq hub_event [ 35.792705][ T5] RIP: 0010:cdev_del+0x22/0x90 [ 35.797441][ T5] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 63 cf 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 [ 35.817021][ T5] RSP: 0018:ffff8881da1df268 EFLAGS: 00010207 [ 35.823104][ T5] RAX: dffffc0000000000 RBX: ffff8881d51b0600 RCX: ffffffff82149f7e [ 35.831052][ T5] RDX: 000000000000000c RSI: ffffffff816c422d RDI: 0000000000000064 [ 35.839004][ T5] RBP: 0000000000000000 R08: ffff8881da196200 R09: fffffbfff1269cae [ 35.846971][ T5] R10: fffffbfff1269cad R11: ffffffff8934e56f R12: 0000000000000000 [ 35.854924][ T5] R13: ffff8881d525a000 R14: ffff8881cd69c000 R15: ffff8881cd4dd070 [ 35.862873][ T5] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 35.871777][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.878339][ T5] CR2: 00000000004c43c8 CR3: 0000000007021000 CR4: 00000000001406f0 [ 35.886288][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.894273][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.902221][ T5] Call Trace: [ 35.905492][ T5] tty_unregister_device+0x10d/0x1a0 [ 35.910763][ T5] hso_probe.cold+0x6e/0x14c [ 35.915386][ T5] usb_probe_interface+0x310/0x800 [ 35.920471][ T5] ? usb_probe_device+0x140/0x140 [ 35.925469][ T5] really_probe+0x290/0xad0 [ 35.929944][ T5] driver_probe_device+0x223/0x350 [ 35.935031][ T5] __device_attach_driver+0x1d1/0x290 [ 35.940387][ T5] ? driver_allows_async_probing+0x160/0x160 [ 35.946370][ T5] bus_for_each_drv+0x162/0x1e0 [ 35.951197][ T5] ? bus_rescan_devices+0x20/0x20 [ 35.956207][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 35.962033][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 35.967292][ T5] __device_attach+0x217/0x390 [ 35.972033][ T5] ? device_bind_driver+0xd0/0xd0 [ 35.977040][ T5] bus_probe_device+0x1e4/0x290 [ 35.981879][ T5] device_add+0x1459/0x1bf0 [ 35.986361][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 35.991620][ T5] ? device_link_remove+0x110/0x110 [ 35.996790][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.002581][ T5] usb_set_configuration+0xe47/0x17d0 [ 36.007947][ T5] generic_probe+0x9d/0xd5 [ 36.012354][ T5] usb_probe_device+0xaf/0x140 [ 36.017105][ T5] ? usb_suspend+0x5f0/0x5f0 [ 36.021670][ T5] really_probe+0x290/0xad0 [ 36.026163][ T5] driver_probe_device+0x223/0x350 [ 36.031263][ T5] __device_attach_driver+0x1d1/0x290 [ 36.036628][ T5] ? driver_allows_async_probing+0x160/0x160 [ 36.042582][ T5] bus_for_each_drv+0x162/0x1e0 [ 36.047408][ T5] ? bus_rescan_devices+0x20/0x20 [ 36.052411][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 36.058194][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 36.063461][ T5] __device_attach+0x217/0x390 [ 36.068210][ T5] ? device_bind_driver+0xd0/0xd0 [ 36.073217][ T5] bus_probe_device+0x1e4/0x290 [ 36.078090][ T5] device_add+0x1459/0x1bf0 [ 36.082574][ T5] ? device_link_remove+0x110/0x110 [ 36.087750][ T5] usb_new_device.cold+0x540/0xcd0 [ 36.092873][ T5] hub_event+0x21cb/0x4300 [ 36.097270][ T5] ? hub_port_debounce+0x350/0x350 [ 36.102359][ T5] ? find_held_lock+0x2d/0x110 [ 36.107103][ T5] ? mark_held_locks+0xe0/0xe0 [ 36.111845][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 36.117369][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 36.122629][ T5] process_one_work+0x945/0x15c0 [ 36.127544][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 36.132954][ T5] worker_thread+0x96/0xe20 [ 36.137466][ T5] ? process_one_work+0x15c0/0x15c0 [ 36.142650][ T5] kthread+0x318/0x420 [ 36.146694][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 36.152090][ T5] ret_from_fork+0x24/0x30 [ 36.156476][ T5] Modules linked in: [ 36.160419][ T5] ---[ end trace 1333ebb78135efad ]--- [ 36.165887][ T5] RIP: 0010:cdev_del+0x22/0x90 [ 36.170680][ T5] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 63 cf 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 [ 36.190334][ T5] RSP: 0018:ffff8881da1df268 EFLAGS: 00010207 [ 36.196407][ T5] RAX: dffffc0000000000 RBX: ffff8881d51b0600 RCX: ffffffff82149f7e [ 36.204381][ T5] RDX: 000000000000000c RSI: ffffffff816c422d RDI: 0000000000000064 [ 36.212355][ T5] RBP: 0000000000000000 R08: ffff8881da196200 R09: fffffbfff1269cae [ 36.220305][ T5] R10: fffffbfff1269cad R11: ffffffff8934e56f R12: 0000000000000000 [ 36.228279][ T5] R13: ffff8881d525a000 R14: ffff8881cd69c000 R15: ffff8881cd4dd070 [ 36.236268][ T5] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 36.245210][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.251806][ T5] CR2: 00000000004c43c8 CR3: 0000000007021000 CR4: 00000000001406f0 [ 36.259756][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.267727][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.275696][ T5] Kernel panic - not syncing: Fatal exception [ 36.282320][ T5] Kernel Offset: disabled [ 36.286633][ T5] Rebooting in 86400 seconds..