INIT: Entering runlevel: 2
[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 274.040948][ T95] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[ 274.131169][ T95] usb 1-1: Using ep0 maxpacket: 16
[ 274.251056][ T95] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
[ 274.262260][ T95] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9
[ 274.275115][ T95] usb 1-1: New USB device found, idVendor=045e, idProduct=07da, bcdDevice= 0.00
[ 274.284218][ T95] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 274.294105][ T95] usb 1-1: config 0 descriptor??
[ 379.790736][ C0] rcu: INFO: rcu_sched self-detected stall on CPU
[ 379.797417][ C0] rcu: 0-....: (10499 ticks this GP) idle=022/1/0x4000000000000002 softirq=2173/2173 fqs=5159
[ 379.807989][ C0] (t=10500 jiffies g=1629 q=27)
[ 379.813026][ C0] NMI backtrace for cpu 0
[ 379.817335][ C0] CPU: 0 PID: 95 Comm: kworker/0:2 Not tainted 5.5.0-rc7-syzkaller #0
[ 379.825749][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 379.836159][ C0] Workqueue: usb_hub_wq hub_event
[ 379.841376][ C0] Call Trace:
[ 379.844648][ C0]
[ 379.847574][ C0] dump_stack+0xef/0x16e
[ 379.851853][ C0] ? x86_vector_activate.cold+0xb0/0xdd
[ 379.857395][ C0] nmi_cpu_backtrace.cold+0x70/0xb1
[ 379.862573][ C0] ? lapic_can_unplug_cpu.cold+0x3b/0x3b
[ 379.868431][ C0] nmi_trigger_cpumask_backtrace+0x1db/0x207
[ 379.874474][ C0] rcu_dump_cpu_stacks+0x169/0x1b3
[ 379.879635][ C0] rcu_sched_clock_irq.cold+0x4da/0x8f8
[ 379.885220][ C0] ? trace_hardirqs_off+0x50/0x200
[ 379.890358][ C0] update_process_times+0x25/0x60
[ 379.895584][ C0] tick_sched_handle+0x9b/0x180
[ 379.900420][ C0] tick_sched_timer+0x42/0x130
[ 379.905188][ C0] __hrtimer_run_queues+0x32c/0xd20
[ 379.910447][ C0] ? tick_sched_do_timer+0x1a0/0x1a0
[ 379.915839][ C0] ? hrtimer_init+0x2e0/0x2e0
[ 379.920498][ C0] ? ktime_get_update_offsets_now+0x24c/0x320
[ 379.926559][ C0] hrtimer_interrupt+0x2e8/0x730
[ 379.931590][ C0] smp_apic_timer_interrupt+0xfe/0x540
[ 379.937045][ C0] apic_timer_interrupt+0xf/0x20
[ 379.941956][ C0]
[ 379.944945][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x47/0x50
[ 379.951093][ C0] Code: 90 b0 12 00 00 83 fa 02 75 20 48 8b 88 b8 12 00 00 8b 80 b4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 0f 1f 84 00 00 00 00 00 65 4c 8b 04 25 00 0f 02 00 65 8b 05 d8
[ 379.970898][ C0] RSP: 0018:ffff8881d5546ca8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
[ 379.979337][ C0] RAX: ffff8881d5538000 RBX: 0000000000000000 RCX: ffffffff8469d98c
[ 379.987598][ C0] RDX: 0000000000000000 RSI: ffffffff8469d997 RDI: 0000000000000005
[ 379.995744][ C0] RBP: ffff8881d5a22c00 R08: ffff8881d5538000 R09: ffffc900004a90cc
[ 380.003834][ C0] R10: fffff5200009881b R11: ffffc900004c40db R12: ffff8881c4000000
[ 380.012003][ C0] R13: 0000000000000000 R14: ffff8881d5a22c00 R15: dffffc0000000000
[ 380.020070][ C0] ? hid_setup_resolution_multiplier+0x34c/0x990
[ 380.026551][ C0] ? hid_setup_resolution_multiplier+0x357/0x990
[ 380.032880][ C0] hid_setup_resolution_multiplier+0x357/0x990
[ 380.039027][ C0] hid_open_report+0x438/0x640
[ 380.043773][ C0] ? hid_parser_global+0x1440/0x1440
[ 380.049126][ C0] ? add_dr+0xb4/0x190
[ 380.053190][ C0] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 380.059039][ C0] ms_probe+0x12d/0x4d0
[ 380.063453][ C0] ? ms_remove+0x90/0x90
[ 380.067702][ C0] hid_device_probe+0x2be/0x3f0
[ 380.072774][ C0] ? hid_match_device+0x1f0/0x1f0
[ 380.077897][ C0] really_probe+0x290/0xad0
[ 380.082479][ C0] driver_probe_device+0x223/0x350
[ 380.087578][ C0] __device_attach_driver+0x1d1/0x290
[ 380.093068][ C0] ? driver_allows_async_probing+0x160/0x160
[ 380.099118][ C0] bus_for_each_drv+0x162/0x1e0
[ 380.103968][ C0] ? bus_rescan_devices+0x20/0x20
[ 380.108986][ C0] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 380.114868][ C0] ? lockdep_hardirqs_on+0x382/0x580
[ 380.120159][ C0] __device_attach+0x217/0x390
[ 380.125039][ C0] ? device_bind_driver+0xd0/0xd0
[ 380.130052][ C0] bus_probe_device+0x1e4/0x290
[ 380.134961][ C0] device_add+0x1459/0x1bf0
[ 380.139468][ C0] ? device_link_remove+0x110/0x110
[ 380.144774][ C0] ? __debugfs_create_file+0x301/0x3f0
[ 380.150232][ C0] hid_add_device+0x33c/0x9a0
[ 380.154992][ C0] ? debug_object_fixup+0x30/0x30
[ 380.160012][ C0] ? __hid_bus_reprobe_drivers+0x130/0x130
[ 380.165908][ C0] ? lockdep_init_map+0x1b0/0x5e0
[ 380.171368][ C0] usbhid_probe+0xa81/0xfa0
[ 380.175924][ C0] usb_probe_interface+0x310/0x800
[ 380.181026][ C0] ? usb_probe_device+0x140/0x140
[ 380.186044][ C0] really_probe+0x290/0xad0
[ 380.190645][ C0] driver_probe_device+0x223/0x350
[ 380.195901][ C0] __device_attach_driver+0x1d1/0x290
[ 380.201253][ C0] ? driver_allows_async_probing+0x160/0x160
[ 380.207231][ C0] bus_for_each_drv+0x162/0x1e0
[ 380.212077][ C0] ? bus_rescan_devices+0x20/0x20
[ 380.217094][ C0] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 380.222895][ C0] ? lockdep_hardirqs_on+0x382/0x580
[ 380.228181][ C0] __device_attach+0x217/0x390
[ 380.233084][ C0] ? device_bind_driver+0xd0/0xd0
[ 380.238166][ C0] bus_probe_device+0x1e4/0x290
[ 380.243264][ C0] device_add+0x1459/0x1bf0
[ 380.247758][ C0] ? wait_for_completion+0x3c0/0x3c0
[ 380.253039][ C0] ? device_link_remove+0x110/0x110
[ 380.258320][ C0] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 380.264321][ C0] usb_set_configuration+0xe47/0x17d0
[ 380.269839][ C0] generic_probe+0x9d/0xd5
[ 380.274247][ C0] usb_probe_device+0xaf/0x140
[ 380.279042][ C0] ? usb_suspend+0x5f0/0x5f0
[ 380.283624][ C0] really_probe+0x290/0xad0
[ 380.288125][ C0] driver_probe_device+0x223/0x350
[ 380.293235][ C0] __device_attach_driver+0x1d1/0x290
[ 380.298629][ C0] ? driver_allows_async_probing+0x160/0x160
[ 380.304622][ C0] bus_for_each_drv+0x162/0x1e0
[ 380.309563][ C0] ? bus_rescan_devices+0x20/0x20
[ 380.314642][ C0] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 380.320477][ C0] ? lockdep_hardirqs_on+0x382/0x580
[ 380.325761][ C0] __device_attach+0x217/0x390
[ 380.330583][ C0] ? device_bind_driver+0xd0/0xd0
[ 380.335609][ C0] bus_probe_device+0x1e4/0x290
[ 380.340460][ C0] device_add+0x1459/0x1bf0
[ 380.344962][ C0] ? device_link_remove+0x110/0x110
[ 380.350305][ C0] usb_new_device.cold+0x540/0xcd0
[ 380.355492][ C0] hub_event+0x21cb/0x4300
[ 380.359934][ C0] ? hub_port_debounce+0x350/0x350
[ 380.365038][ C0] ? find_held_lock+0x2d/0x110
[ 380.369801][ C0] ? mark_held_locks+0xe0/0xe0
[ 380.374615][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 380.380160][ C0] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 380.385562][ C0] process_one_work+0x945/0x15c0
[ 380.390498][ C0] ? pwq_dec_nr_in_flight+0x310/0x310
[ 380.396308][ C0] ? do_raw_spin_lock+0x129/0x290
[ 380.401492][ C0] worker_thread+0x96/0xe20
[ 380.405994][ C0] ? process_one_work+0x15c0/0x15c0
[ 380.411279][ C0] kthread+0x318/0x420
[ 380.415333][ C0] ? kthread_create_on_node+0xf0/0xf0
[ 380.420769][ C0] ret_from_fork+0x24/0x30
[ 384.750856][ T94] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 0-... } 10977 jiffies s: 1121 root: 0x1/.
[ 384.762702][ T94] rcu: blocking rcu_node structures:
[ 384.768005][ T94] Task dump for CPU 0:
[ 384.772256][ T94] kworker/0:2 R running task 25808 95 2 0x80004008
[ 384.780192][ T94] Workqueue: usb_hub_wq hub_event
[ 384.785424][ T94] Call Trace:
[ 384.788863][ T94] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 384.794421][ T94] ? retint_kernel+0x10/0x10
[ 384.799040][ T94] ? hid_setup_resolution_multiplier+0x30c/0x990
[ 384.805562][ T94] ? write_comp_data+0x17/0x70
[ 384.810346][ T94] ? hid_setup_resolution_multiplier+0x30c/0x990
[ 384.816751][ T94] ? hid_open_report+0x438/0x640
[ 384.821742][ T94] ? hid_parser_global+0x1440/0x1440
[ 384.827194][ T94] ? add_dr+0xb4/0x190
[ 384.831437][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 384.837266][ T94] ? ms_probe+0x12d/0x4d0
[ 384.841670][ T94] ? ms_remove+0x90/0x90
[ 384.845927][ T94] ? hid_device_probe+0x2be/0x3f0
[ 384.851092][ T94] ? hid_match_device+0x1f0/0x1f0
[ 384.856132][ T94] ? really_probe+0x290/0xad0
[ 384.860844][ T94] ? driver_probe_device+0x223/0x350
[ 384.866126][ T94] ? __device_attach_driver+0x1d1/0x290
[ 384.871858][ T94] ? driver_allows_async_probing+0x160/0x160
[ 384.877870][ T94] ? bus_for_each_drv+0x162/0x1e0
[ 384.882961][ T94] ? bus_rescan_devices+0x20/0x20
[ 384.887999][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 384.893855][ T94] ? lockdep_hardirqs_on+0x382/0x580
[ 384.899467][ T94] ? __device_attach+0x217/0x390
[ 384.904458][ T94] ? device_bind_driver+0xd0/0xd0
[ 384.910094][ T94] ? bus_probe_device+0x1e4/0x290
[ 384.915187][ T94] ? device_add+0x1459/0x1bf0
[ 384.920120][ T94] ? device_link_remove+0x110/0x110
[ 384.925409][ T94] ? __debugfs_create_file+0x301/0x3f0
[ 384.931342][ T94] ? hid_add_device+0x33c/0x9a0
[ 384.936222][ T94] ? debug_object_fixup+0x30/0x30
[ 384.941282][ T94] ? __hid_bus_reprobe_drivers+0x130/0x130
[ 384.947107][ T94] ? lockdep_init_map+0x1b0/0x5e0
[ 384.953173][ T94] ? usbhid_probe+0xa81/0xfa0
[ 384.957878][ T94] ? usb_probe_interface+0x310/0x800
[ 384.963287][ T94] ? usb_probe_device+0x140/0x140
[ 384.968312][ T94] ? really_probe+0x290/0xad0
[ 384.973045][ T94] ? driver_probe_device+0x223/0x350
[ 384.978344][ T94] ? __device_attach_driver+0x1d1/0x290
[ 384.983926][ T94] ? driver_allows_async_probing+0x160/0x160
[ 384.989920][ T94] ? bus_for_each_drv+0x162/0x1e0
[ 384.994995][ T94] ? bus_rescan_devices+0x20/0x20
[ 385.000042][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 385.005937][ T94] ? lockdep_hardirqs_on+0x382/0x580
[ 385.011307][ T94] ? __device_attach+0x217/0x390
[ 385.016354][ T94] ? device_bind_driver+0xd0/0xd0
[ 385.021556][ T94] ? bus_probe_device+0x1e4/0x290
[ 385.026597][ T94] ? device_add+0x1459/0x1bf0
[ 385.031532][ T94] ? wait_for_completion+0x3c0/0x3c0
[ 385.036844][ T94] ? device_link_remove+0x110/0x110
[ 385.042086][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 385.047924][ T94] ? usb_set_configuration+0xe47/0x17d0
[ 385.053516][ T94] ? generic_probe+0x9d/0xd5
[ 385.058323][ T94] ? usb_probe_device+0xaf/0x140
[ 385.063434][ T94] ? usb_suspend+0x5f0/0x5f0
[ 385.068038][ T94] ? really_probe+0x290/0xad0
[ 385.072810][ T94] ? driver_probe_device+0x223/0x350
[ 385.078161][ T94] ? __device_attach_driver+0x1d1/0x290
[ 385.083914][ T94] ? driver_allows_async_probing+0x160/0x160
[ 385.090181][ T94] ? bus_for_each_drv+0x162/0x1e0
[ 385.095262][ T94] ? bus_rescan_devices+0x20/0x20
[ 385.100498][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 385.106389][ T94] ? lockdep_hardirqs_on+0x382/0x580
[ 385.111723][ T94] ? __device_attach+0x217/0x390
[ 385.116683][ T94] ? device_bind_driver+0xd0/0xd0
[ 385.122027][ T94] ? bus_probe_device+0x1e4/0x290
[ 385.127079][ T94] ? device_add+0x1459/0x1bf0
[ 385.131810][ T94] ? device_link_remove+0x110/0x110
[ 385.137073][ T94] ? usb_new_device.cold+0x540/0xcd0
[ 385.142563][ T94] ? hub_event+0x21cb/0x4300
[ 385.147247][ T94] ? hub_port_debounce+0x350/0x350
[ 385.152421][ T94] ? find_held_lock+0x2d/0x110
[ 385.157203][ T94] ? mark_held_locks+0xe0/0xe0
[ 385.162123][ T94] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 385.167691][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 385.173035][ T94] ? process_one_work+0x945/0x15c0
[ 385.178177][ T94] ? pwq_dec_nr_in_flight+0x310/0x310
[ 385.183609][ T94] ? do_raw_spin_lock+0x129/0x290
[ 385.188776][ T94] ? worker_thread+0x96/0xe20
[ 385.193509][ T94] ? process_one_work+0x15c0/0x15c0
[ 385.198724][ T94] ? kthread+0x318/0x420
[ 385.203027][ T94] ? kthread_create_on_node+0xf0/0xf0
[ 385.208576][ T94] ? ret_from_fork+0x24/0x30