[info] Using makefile-style concurrent boot in runlevel 2. [ 15.004854][ C1] random: crng init done [....] 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 '10.128.15.197' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.259182][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 31.499150][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 31.619229][ T12] usb 1-1: config 0 has an invalid interface number: 222 but max is 0 [ 31.627500][ T12] usb 1-1: config 0 has no interface number 0 [ 31.633772][ T12] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=92.4c [ 31.643204][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 31.653027][ T12] usb 1-1: config 0 descriptor?? [ 31.692533][ T12] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 32.099235][ T12] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 32.107325][ T12] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 32.114567][ T12] rsi_91x: rsi_probe: Failed in device init [ 32.122203][ T12] ------------[ cut here ]------------ [ 32.128834][ T12] ODEBUG: free active (active state 0) object type: timer_list hint: bl_cmd_timeout+0x0/0x40 [ 32.149224][ T12] WARNING: CPU: 0 PID: 12 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 [ 32.158551][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 32.165155][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc6+ #13 [ 32.172599][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.182964][ T12] Workqueue: usb_hub_wq hub_event [ 32.188069][ T12] Call Trace: [ 32.191414][ T12] dump_stack+0xca/0x13e [ 32.195857][ T12] ? debug_print_object+0xe0/0x250 [ 32.201202][ T12] panic+0x292/0x6c9 [ 32.205109][ T12] ? __warn_printk+0xf3/0xf3 [ 32.209697][ T12] ? debug_print_object+0x160/0x250 [ 32.215024][ T12] ? __probe_kernel_read+0x16c/0x1b0 [ 32.220303][ T12] ? __warn.cold+0x5/0x4b [ 32.224624][ T12] ? __warn+0xe4/0x1c0 [ 32.228828][ T12] ? debug_print_object+0x160/0x250 [ 32.234375][ T12] __warn.cold+0x20/0x4b [ 32.238615][ T12] ? debug_print_object+0x160/0x250 [ 32.244063][ T12] report_bug+0x262/0x2a0 [ 32.248397][ T12] do_error_trap+0x12b/0x1e0 [ 32.253161][ T12] ? debug_print_object+0x160/0x250 [ 32.258483][ T12] do_invalid_op+0x32/0x40 [ 32.262935][ T12] ? debug_print_object+0x160/0x250 [ 32.268402][ T12] invalid_op+0x14/0x20 [ 32.272742][ T12] RIP: 0010:debug_print_object+0x160/0x250 [ 32.278536][ T12] Code: dd e0 16 da 85 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd e0 16 da 85 48 c7 c7 c0 0c da 85 e8 db c7 33 ff <0f> 0b 83 05 43 3c ce 05 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 32.298512][ T12] RSP: 0018:ffff8881d9e0f0b8 EFLAGS: 00010082 [ 32.304757][ T12] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 32.312807][ T12] RDX: 0000000000000000 RSI: ffffffff8127ef3d RDI: ffffed103b3c1e09 [ 32.321084][ T12] RBP: 0000000000000001 R08: ffff8881d9df9800 R09: ffffed103b643ed7 [ 32.329052][ T12] R10: ffffed103b643ed6 R11: ffff8881db21f6b7 R12: ffffffff86f04760 [ 32.337016][ T12] R13: ffffffff812db3c0 R14: ffffffff8939afa8 R15: ffff8881d05a9b60 [ 32.345088][ T12] ? calc_wheel_index+0x220/0x220 [ 32.350270][ T12] ? vprintk_func+0x7d/0x113 [ 32.354903][ T12] ? debug_print_object+0x160/0x250 [ 32.360302][ T12] debug_check_no_obj_freed+0x2a3/0x42e [ 32.365898][ T12] ? kfree+0xbc/0x280 [ 32.369932][ T12] ? rsi_probe+0xcec/0x15a0 [ 32.374693][ T12] kfree+0x101/0x280 [ 32.378787][ T12] rsi_probe+0xcec/0x15a0 [ 32.383118][ T12] ? __pm_runtime_set_status+0x5d5/0xa10 [ 32.388800][ T12] ? rsi_disconnect+0x630/0x630 [ 32.393703][ T12] ? lock_set_class+0x2c0/0x5f0 [ 32.398548][ T12] ? __pm_runtime_resume+0x111/0x180 [ 32.403830][ T12] usb_probe_interface+0x305/0x7a0 [ 32.409016][ T12] ? usb_probe_device+0x100/0x100 [ 32.414154][ T12] really_probe+0x281/0x660 [ 32.418800][ T12] driver_probe_device+0x104/0x210 [ 32.423922][ T12] __device_attach_driver+0x1c2/0x220 [ 32.429296][ T12] ? driver_allows_async_probing+0x160/0x160 [ 32.435358][ T12] bus_for_each_drv+0x15c/0x1e0 [ 32.440215][ T12] ? bus_rescan_devices+0x20/0x20 [ 32.445251][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 32.451237][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 32.456691][ T12] __device_attach+0x217/0x360 [ 32.461627][ T12] ? device_bind_driver+0xd0/0xd0 [ 32.466632][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 32.471898][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 32.477212][ T12] bus_probe_device+0x1e4/0x290 [ 32.482131][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 32.488201][ T12] device_add+0xae6/0x16f0 [ 32.492861][ T12] ? uevent_store+0x50/0x50 [ 32.497366][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 32.503595][ T12] usb_set_configuration+0xdf6/0x1670 [ 32.508973][ T12] generic_probe+0x9d/0xd5 [ 32.513669][ T12] usb_probe_device+0x99/0x100 [ 32.518563][ T12] ? usb_suspend+0x620/0x620 [ 32.523384][ T12] really_probe+0x281/0x660 [ 32.528051][ T12] driver_probe_device+0x104/0x210 [ 32.533300][ T12] __device_attach_driver+0x1c2/0x220 [ 32.538725][ T12] ? driver_allows_async_probing+0x160/0x160 [ 32.544956][ T12] bus_for_each_drv+0x15c/0x1e0 [ 32.550194][ T12] ? bus_rescan_devices+0x20/0x20 [ 32.555407][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 32.561302][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 32.567145][ T12] __device_attach+0x217/0x360 [ 32.572881][ T12] ? device_bind_driver+0xd0/0xd0 [ 32.578000][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 32.583277][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 32.589203][ T12] bus_probe_device+0x1e4/0x290 [ 32.594048][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 32.599932][ T12] device_add+0xae6/0x16f0 [ 32.604466][ T12] ? uevent_store+0x50/0x50 [ 32.609115][ T12] usb_new_device.cold+0x8c1/0x1016 [ 32.614413][ T12] ? usb_port_suspend+0xa40/0xa40 [ 32.619681][ T12] ? mark_held_locks+0x9f/0xe0 [ 32.624942][ T12] ? _raw_spin_unlock_irq+0x24/0x30 [ 32.630138][ T12] hub_event+0x1ada/0x3590 [ 32.634585][ T12] ? hub_port_debounce+0x260/0x260 [ 32.639697][ T12] process_one_work+0x905/0x1570 [ 32.644629][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 32.650001][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 32.655050][ T12] worker_thread+0x96/0xe20 [ 32.659705][ T12] ? process_one_work+0x1570/0x1570 [ 32.664890][ T12] kthread+0x30b/0x410 [ 32.668953][ T12] ? kthread_park+0x1a0/0x1a0 [ 32.673631][ T12] ret_from_fork+0x24/0x30 [ 32.678022][ T12] [ 32.678025][ T12] ====================================================== [ 32.678027][ T12] WARNING: possible circular locking dependency detected [ 32.678029][ T12] 5.2.0-rc6+ #13 Not tainted [ 32.678032][ T12] ------------------------------------------------------ [ 32.678034][ T12] kworker/0:1/12 is trying to acquire lock: [ 32.678036][ T12] 000000000ab12826 ((console_sem).lock){-.-.}, at: down_trylock+0xe/0x60 [ 32.678042][ T12] [ 32.678044][ T12] but task is already holding lock: [ 32.678046][ T12] 00000000be53c849 (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0xc4/0x42e [ 32.678053][ T12] [ 32.678055][ T12] which lock already depends on the new lock. [ 32.678056][ T12] [ 32.678057][ T12] [ 32.678060][ T12] the existing dependency chain (in reverse order) is: [ 32.678061][ T12] [ 32.678062][ T12] -> #3 (&obj_hash[i].lock){-.-.}: [ 32.678069][ T12] _raw_spin_lock_irqsave+0x32/0x50 [ 32.678071][ T12] __debug_object_init+0xb7/0xac0 [ 32.678072][ T12] hrtimer_init+0x27/0x260 [ 32.678074][ T12] init_dl_task_timer+0x17/0x50 [ 32.678076][ T12] __sched_fork.isra.0+0x207/0x460 [ 32.678078][ T12] init_idle+0x6c/0x760 [ 32.678080][ T12] sched_init+0x91f/0x9bc [ 32.678082][ T12] start_kernel+0x347/0x81a [ 32.678084][ T12] secondary_startup_64+0xa4/0xb0 [ 32.678085][ T12] [ 32.678086][ T12] -> #2 (&rq->lock){-.-.}: [ 32.678092][ T12] _raw_spin_lock+0x27/0x40 [ 32.678094][ T12] task_fork_fair+0x37/0x550 [ 32.678096][ T12] sched_fork+0x3a4/0x8d0 [ 32.678098][ T12] copy_process.part.0+0x16c1/0x63a0 [ 32.678099][ T12] _do_fork+0x233/0xec0 [ 32.678101][ T12] kernel_thread+0x2f/0x40 [ 32.678103][ T12] rest_init+0x23/0x371 [ 32.678105][ T12] start_kernel+0x7e0/0x81a [ 32.678107][ T12] secondary_startup_64+0xa4/0xb0 [ 32.678108][ T12] [ 32.678109][ T12] -> #1 (&p->pi_lock){-.-.}: [ 32.678115][ T12] _raw_spin_lock_irqsave+0x32/0x50 [ 32.678119][ T12] try_to_wake_up+0x80/0x1410 [ 32.678121][ T12] up+0x92/0xe0 [ 32.678123][ T12] __up_console_sem+0x42/0x80 [ 32.678125][ T12] console_unlock+0x5ab/0xbf0 [ 32.678126][ T12] vprintk_emit+0x171/0x3e0 [ 32.678128][ T12] vprintk_func+0x75/0x113 [ 32.678130][ T12] printk+0xba/0xed [ 32.678132][ T12] regdb_fw_cb.cold+0x6c/0xb2 [ 32.678134][ T12] request_firmware_work_func+0x126/0x242 [ 32.678136][ T12] process_one_work+0x905/0x1570 [ 32.678138][ T12] worker_thread+0x96/0xe20 [ 32.678139][ T12] kthread+0x30b/0x410 [ 32.678141][ T12] ret_from_fork+0x24/0x30 [ 32.678142][ T12] [ 32.678143][ T12] -> #0 ((console_sem).lock){-.-.}: [ 32.678150][ T12] lock_acquire+0x100/0x2b0 [ 32.678152][ T12] _raw_spin_lock_irqsave+0x32/0x50 [ 32.678154][ T12] down_trylock+0xe/0x60 [ 32.678156][ T12] __down_trylock_console_sem+0x31/0xc0 [ 32.678158][ T12] console_trylock+0x12/0x90 [ 32.678160][ T12] vprintk_emit+0x158/0x3e0 [ 32.678161][ T12] vprintk_func+0x75/0x113 [ 32.678163][ T12] printk+0xba/0xed [ 32.678165][ T12] __warn_printk+0x9b/0xf3 [ 32.678167][ T12] debug_print_object+0x160/0x250 [ 32.678169][ T12] debug_check_no_obj_freed+0x2a3/0x42e [ 32.678171][ T12] kfree+0x101/0x280 [ 32.678172][ T12] rsi_probe+0xcec/0x15a0 [ 32.678174][ T12] usb_probe_interface+0x305/0x7a0 [ 32.678176][ T12] really_probe+0x281/0x660 [ 32.678178][ T12] driver_probe_device+0x104/0x210 [ 32.678180][ T12] __device_attach_driver+0x1c2/0x220 [ 32.678186][ T12] bus_for_each_drv+0x15c/0x1e0 [ 32.678188][ T12] __device_attach+0x217/0x360 [ 32.678189][ T12] bus_probe_device+0x1e4/0x290 [ 32.678192][ T12] device_add+0xae6/0x16f0 [ 32.678194][ T12] usb_set_configuration+0xdf6/0x1670 [ 32.678195][ T12] generic_probe+0x9d/0xd5 [ 32.678197][ T12] usb_probe_device+0x99/0x100 [ 32.678199][ T12] really_probe+0x281/0x660 [ 32.678201][ T12] driver_probe_device+0x104/0x210 [ 32.678203][ T12] __device_attach_driver+0x1c2/0x220 [ 32.678205][ T12] bus_for_each_drv+0x15c/0x1e0 [ 32.678207][ T12] __device_attach+0x217/0x360 [ 32.678209][ T12] bus_probe_device+0x1e4/0x290 [ 32.678211][ T12] device_add+0xae6/0x16f0 [ 32.678213][ T12] usb_new_device.cold+0x8c1/0x1016 [ 32.678215][ T12] hub_event+0x1ada/0x3590 [ 32.678217][ T12] process_one_work+0x905/0x1570 [ 32.678219][ T12] worker_thread+0x96/0xe20 [ 32.678220][ T12] kthread+0x30b/0x410 [ 32.678222][ T12] ret_from_fork+0x24/0x30 [ 32.678223][ T12] [ 32.678225][ T12] other info that might help us debug this: [ 32.678226][ T12] [ 32.678228][ T12] Chain exists of: [ 32.678229][ T12] (console_sem).lock --> &rq->lock --> &obj_hash[i].lock [ 32.678237][ T12] [ 32.678239][ T12] Possible unsafe locking scenario: [ 32.678240][ T12] [ 32.678242][ T12] CPU0 CPU1 [ 32.678244][ T12] ---- ---- [ 32.678245][ T12] lock(&obj_hash[i].lock); [ 32.678249][ T12] lock(&rq->lock); [ 32.678253][ T12] lock(&obj_hash[i].lock); [ 32.678257][ T12] lock((console_sem).lock); [ 32.678260][ T12] [ 32.678262][ T12] *** DEADLOCK *** [ 32.678263][ T12] [ 32.678265][ T12] 6 locks held by kworker/0:1/12: [ 32.678266][ T12] #0: 0000000080d6971f ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81a/0x1570 [ 32.678274][ T12] #1: 0000000086b1d357 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x84e/0x1570 [ 32.678282][ T12] #2: 00000000d9df1f91 (&dev->mutex){....}, at: hub_event+0x179/0x3590 [ 32.678292][ T12] #3: 00000000de953bd5 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 [ 32.678299][ T12] #4: 0000000050ce1af4 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 [ 32.678307][ T12] #5: 00000000be53c849 (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0xc4/0x42e [ 32.678315][ T12] [ 32.678316][ T12] stack backtrace: [ 32.678319][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc6+ #13 [ 32.678322][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.678324][ T12] Workqueue: usb_hub_wq hub_event [ 32.678326][ T12] Call Trace: [ 32.678328][ T12] dump_stack+0xca/0x13e [ 32.678330][ T12] print_circular_bug.cold+0x1c4/0x282 [ 32.678332][ T12] __lock_acquire+0x3654/0x5340 [ 32.678334][ T12] ? mark_held_locks+0xe0/0xe0 [ 32.678335][ T12] ? enable_ptr_key_workfn+0x30/0x30 [ 32.678337][ T12] ? kvm_sched_clock_read+0x14/0x30 [ 32.678339][ T12] lock_acquire+0x100/0x2b0 [ 32.678341][ T12] ? down_trylock+0xe/0x60 [ 32.678342][ T12] ? vprintk_emit+0x158/0x3e0 [ 32.678344][ T12] _raw_spin_lock_irqsave+0x32/0x50 [ 32.678346][ T12] ? down_trylock+0xe/0x60 [ 32.678347][ T12] down_trylock+0xe/0x60 [ 32.678349][ T12] ? vprintk_emit+0x158/0x3e0 [ 32.678351][ T12] ? vprintk_emit+0x158/0x3e0 [ 32.678353][ T12] __down_trylock_console_sem+0x31/0xc0 [ 32.678355][ T12] console_trylock+0x12/0x90 [ 32.678356][ T12] vprintk_emit+0x158/0x3e0 [ 32.678358][ T12] ? calc_wheel_index+0x220/0x220 [ 32.678360][ T12] vprintk_func+0x75/0x113 [ 32.678361][ T12] printk+0xba/0xed [ 32.678363][ T12] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 32.678365][ T12] ? mark_held_locks+0xe0/0xe0 [ 32.678367][ T12] ? __device_attach+0x217/0x360 [ 32.678369][ T12] ? bus_probe_device+0x1e4/0x290 [ 32.678370][ T12] ? device_add+0xae6/0x16f0 [ 32.678372][ T12] ? usb_set_configuration+0xdf6/0x1670 [ 32.678374][ T12] ? generic_probe+0x9d/0xd5 [ 32.678376][ T12] ? really_probe+0x281/0x660 [ 32.678377][ T12] ? __warn_printk+0x8f/0xf3 [ 32.678379][ T12] ? rsi_mgmt_pkt_recv+0x1f40/0x1f40 [ 32.678381][ T12] __warn_printk+0x9b/0xf3 [ 32.678383][ T12] ? add_taint.cold+0x16/0x16 [ 32.678385][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 32.678386][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 32.678388][ T12] ? lock_acquire+0x100/0x2b0 [ 32.678390][ T12] ? rsi_mgmt_pkt_recv+0x1f40/0x1f40 [ 32.678392][ T12] debug_print_object+0x160/0x250 [ 32.678394][ T12] debug_check_no_obj_freed+0x2a3/0x42e [ 32.678396][ T12] ? kfree+0xbc/0x280 [ 32.678397][ T12] ? rsi_probe+0xcec/0x15a0 [ 32.678399][ T12] kfree+0x101/0x280 [ 32.678400][ T12] rsi_probe+0xcec/0x15a0 [ 32.678402][ T12] ? __pm_runtime_set_status+0x5d5/0xa10 [ 32.678404][ T12] ? rsi_disconnect+0x630/0x630 [ 32.678406][ T12] ? lock_set_class+0x2c0/0x5f0 [ 32.678408][ T12] ? __pm_runtime_resume+0x111/0x180 [ 32.678410][ T12] usb_probe_interface+0x305/0x7a0 [ 32.678411][ T12] ? usb_probe_device+0x100/0x100 [ 32.678413][ T12] really_probe+0x281/0x660 [ 32.678415][ T12] driver_probe_device+0x104/0x210 [ 32.678417][ T12] __device_attach_driver+0x1c2/0x220 [ 32.678419][ T12] ? driver_allows_async_probing+0x160/0x160 [ 32.678421][ T12] bus_for_each_drv+0x15c/0x1e0 [ 32.678423][ T12] ? bus_rescan_devices+0x20/0x20 [ 32.678425][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 32.678427][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 32.678429][ T12] __device_attach+0x217/0x360 [ 32.678430][ T12] ? device_bind_driver+0xd0/0xd0 [ 32.678432][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 32.678434][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 32.678436][ T12] bus_probe_device+0x1e4/0x290 [ 32.678438][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 32.678440][ T12] device_add+0xae6/0x16f0 [ 32.678441][ T12] ? uevent_store+0x50/0x50 [ 32.678443][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 32.678445][ T12] usb_set_configuration+0xdf6/0x1670 [ 32.678447][ T12] generic_probe+0x9d/0xd5 [ 32.678449][ T12] usb_probe_device+0x99/0x100 [ 32.678451][ T12] ? usb_suspend+0x620/0x620 [ 32.678452][ T12] really_probe+0x281/0x660 [ 32.678454][ T12] driver_probe_device+0x104/0x210 [ 32.678457][ T12] __device_attach_driver+0x1c2/0x220 [ 32.678459][ T12] ? driver_allows_async_probing+0x160/0x160 [ 32.678460][ T12] bus_for_each_drv+0x15c/0x1e0 [ 32.678462][ T12] ? bus_rescan_devices+0x20/0x20 [ 32.678464][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 32.678466][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 32.678468][ T12] __device_attach+0x217/0x360 [ 32.678470][ T12] ? device_bind_driver+0xd0/0xd0 [ 32.678472][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 32.678474][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 32.678475][ T12] bus_probe_device+0x1e4/0x290 [ 32.678477][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 32.678479][ T12] device_add+0xae6/0x16f0 [ 32.678481][ T12] ? uevent_store+0x50/0x50 [ 32.678483][ T12] usb_new_device.cold+0x8c1/0x1016 [ 32.678484][ T12] ? usb_port_suspend+0xa40/0xa40 [ 32.678486][ T12] ? mark_held_locks+0x9f/0xe0 [ 32.678488][ T12] ? _raw_spin_unlock_irq+0x24/0x30 [ 32.678490][ T12] hub_event+0x1ada/0x3590 [ 32.678492][ T12] ? hub_port_debounce+0x260/0x260 [ 32.678493][ T12] process_one_work+0x905/0x1570 [ 32.678495][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 32.678497][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 32.678499][ T12] worker_thread+0x96/0xe20 [ 32.678501][ T12] ? process_one_work+0x1570/0x1570 [ 32.678502][ T12] kthread+0x30b/0x410 [ 32.678504][ T12] ? kthread_park+0x1a0/0x1a0 [ 32.678505][ T12] ret_from_fork+0x24/0x30 [ 32.679118][ T12] Kernel Offset: disabled [ 33.822035][ T12] Rebooting in 86400 seconds..