[info] Using makefile-style concurrent boot in runlevel 2. [ 14.905983][ 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 '10.128.0.104' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.885411][ T21] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 55.125339][ T21] usb 1-1: Using ep0 maxpacket: 8 [ 55.245431][ T21] usb 1-1: config 0 has an invalid interface number: 250 but max is 0 [ 55.253693][ T21] usb 1-1: config 0 has no interface number 0 [ 55.260133][ T21] usb 1-1: New USB device found, idVendor=05a9, idProduct=2640, bcdDevice=5b.bf [ 55.269350][ T21] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 55.278943][ T21] usb 1-1: config 0 descriptor?? executing program [ 55.535524][ T21] usb 1-1: string descriptor 0 read error: -71 [ 55.543796][ T21] WARNING: CPU: 1 PID: 21 at kernel/workqueue.c:3030 __flush_work+0x93f/0xa80 [ 55.552729][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 55.559516][ T21] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.2.0-rc1+ #10 [ 55.567011][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.577214][ T21] Workqueue: usb_hub_wq hub_event [ 55.582237][ T21] Call Trace: [ 55.585529][ T21] dump_stack+0xca/0x13e [ 55.593076][ T21] ? __flush_work+0x880/0xa80 [ 55.597760][ T21] panic+0x292/0x6c9 [ 55.601659][ T21] ? __warn_printk+0xf3/0xf3 [ 55.606355][ T21] ? __flush_work+0x93f/0xa80 [ 55.611118][ T21] ? __probe_kernel_read+0x16c/0x1b0 [ 55.616656][ T21] ? __warn.cold+0x5/0x4b [ 55.620976][ T21] ? __warn+0xe4/0x1c0 [ 55.625118][ T21] ? __flush_work+0x93f/0xa80 [ 55.629784][ T21] __warn.cold+0x20/0x4b [ 55.634186][ T21] ? __flush_work+0x93f/0xa80 [ 55.638849][ T21] report_bug+0x262/0x2a0 [ 55.643161][ T21] do_error_trap+0x12b/0x1e0 [ 55.647747][ T21] ? __flush_work+0x93f/0xa80 [ 55.652417][ T21] do_invalid_op+0x32/0x40 [ 55.656823][ T21] ? __flush_work+0x93f/0xa80 [ 55.661535][ T21] invalid_op+0x14/0x20 [ 55.665684][ T21] RIP: 0010:__flush_work+0x93f/0xa80 [ 55.670951][ T21] Code: e8 56 45 23 00 48 c7 c2 89 86 19 81 be 01 00 00 00 45 31 e4 48 c7 c7 20 82 ef 86 e8 6b 4d 0b 00 e9 d9 fb ff ff e8 31 45 23 00 <0f> 0b 45 31 e4 e9 ca fb ff ff e8 22 45 23 00 e8 9d 07 12 00 31 ff [ 55.690729][ T21] RSP: 0018:ffff8881d9efed98 EFLAGS: 00010293 [ 55.696918][ T21] RAX: ffff8881d9e36000 RBX: ffff8881cfcb05b0 RCX: dffffc0000000000 [ 55.705095][ T21] RDX: 0000000000000000 RSI: ffffffff811986bf RDI: 0000000000000001 [ 55.713053][ T21] RBP: ffff8881d9efef00 R08: ffff8881d9e36000 R09: 0000000000000000 [ 55.721009][ T21] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 55.729183][ T21] R13: 0000000000000001 R14: 0000000000000293 R15: ffff8881cfcb05c8 [ 55.737162][ T21] ? __flush_work+0x93f/0xa80 [ 55.741983][ T21] ? __flush_work+0x93f/0xa80 [ 55.746648][ T21] ? lockdep_hardirqs_on+0x379/0x580 [ 55.752146][ T21] ? wq_pool_ids_show+0x310/0x310 [ 55.757300][ T21] ? save_stack+0x4c/0x80 [ 55.761615][ T21] ? save_stack+0x1b/0x80 [ 55.765928][ T21] ? __kasan_slab_free+0x130/0x180 [ 55.771024][ T21] ? kfree+0xd7/0x280 [ 55.774985][ T21] ? usb_string+0x379/0x450 [ 55.779523][ T21] ? uvc_probe+0xd74/0x64e4 [ 55.784019][ T21] ? usb_probe_interface+0x305/0x7a0 [ 55.789289][ T21] ? really_probe+0x281/0x660 [ 55.793993][ T21] ? driver_probe_device+0x104/0x210 [ 55.799269][ T21] ? __device_attach_driver+0x1c2/0x220 [ 55.804924][ T21] ? bus_for_each_drv+0x15c/0x1e0 [ 55.810052][ T21] ? __device_attach+0x217/0x360 [ 55.814976][ T21] ? bus_probe_device+0x1e4/0x290 [ 55.820207][ T21] ? device_add+0xae6/0x16f0 [ 55.824787][ T21] ? mark_held_locks+0x9f/0xe0 [ 55.829630][ T21] __cancel_work_timer+0x312/0x440 [ 55.834736][ T21] ? work_on_cpu_safe+0x70/0x70 [ 55.839571][ T21] ? _cond_resched+0x10/0x20 [ 55.844194][ T21] ? usb_kill_urb+0x198/0x2c0 [ 55.848862][ T21] ? lockdep_hardirqs_on+0x379/0x580 [ 55.854131][ T21] ? usb_poison_anchored_urbs+0x150/0x150 [ 55.859840][ T21] uvc_ctrl_cleanup_device+0x22/0x483 [ 55.865195][ T21] ? uvc_delete+0x21/0x2f0 [ 55.869705][ T21] ? rcu_read_lock_sched_held+0x113/0x130 [ 55.875406][ T21] uvc_delete+0x29/0x2f0 [ 55.879626][ T21] uvc_probe+0xf95/0x64e4 [ 55.884060][ T21] ? mark_held_locks+0xe0/0xe0 [ 55.888830][ T21] ? __pm_runtime_set_status+0x702/0xa10 [ 55.894441][ T21] ? pm_runtime_enable+0x2a/0x310 [ 55.899556][ T21] ? pm_runtime_enable+0x2a/0x310 [ 55.904568][ T21] ? mark_held_locks+0x9f/0xe0 [ 55.909328][ T21] ? usb_probe_interface+0x305/0x7a0 [ 55.914601][ T21] usb_probe_interface+0x305/0x7a0 [ 55.919699][ T21] ? usb_probe_device+0x100/0x100 [ 55.924718][ T21] really_probe+0x281/0x660 [ 55.929316][ T21] driver_probe_device+0x104/0x210 [ 55.934414][ T21] __device_attach_driver+0x1c2/0x220 [ 55.940055][ T21] ? driver_allows_async_probing+0x160/0x160 [ 55.946022][ T21] bus_for_each_drv+0x15c/0x1e0 [ 55.950863][ T21] ? bus_rescan_devices+0x20/0x20 [ 55.955873][ T21] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 55.961667][ T21] ? lockdep_hardirqs_on+0x379/0x580 [ 55.966931][ T21] __device_attach+0x217/0x360 [ 55.971671][ T21] ? device_bind_driver+0xd0/0xd0 [ 55.976783][ T21] ? kobject_uevent_env+0x29e/0x1150 [ 55.982094][ T21] ? kobject_uevent_env+0x2a8/0x1150 [ 55.987390][ T21] bus_probe_device+0x1e4/0x290 [ 55.992249][ T21] ? blocking_notifier_call_chain+0x54/0xa0 [ 55.998144][ T21] device_add+0xae6/0x16f0 [ 56.002545][ T21] ? uevent_store+0x50/0x50 [ 56.007028][ T21] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 56.012869][ T21] usb_set_configuration+0xdf6/0x1670 [ 56.018233][ T21] generic_probe+0x9d/0xd5 [ 56.022704][ T21] usb_probe_device+0x99/0x100 [ 56.027457][ T21] ? usb_suspend+0x620/0x620 [ 56.032033][ T21] really_probe+0x281/0x660 [ 56.036619][ T21] driver_probe_device+0x104/0x210 [ 56.041806][ T21] __device_attach_driver+0x1c2/0x220 [ 56.047167][ T21] ? driver_allows_async_probing+0x160/0x160 [ 56.053262][ T21] bus_for_each_drv+0x15c/0x1e0 [ 56.058092][ T21] ? bus_rescan_devices+0x20/0x20 [ 56.063100][ T21] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 56.068895][ T21] ? lockdep_hardirqs_on+0x379/0x580 [ 56.074168][ T21] __device_attach+0x217/0x360 [ 56.078963][ T21] ? device_bind_driver+0xd0/0xd0 [ 56.084104][ T21] ? kobject_uevent_env+0x29e/0x1150 [ 56.089397][ T21] ? kobject_uevent_env+0x2a8/0x1150 [ 56.094674][ T21] bus_probe_device+0x1e4/0x290 [ 56.099662][ T21] ? blocking_notifier_call_chain+0x54/0xa0 [ 56.105574][ T21] device_add+0xae6/0x16f0 [ 56.109978][ T21] ? uevent_store+0x50/0x50 [ 56.114462][ T21] usb_new_device.cold+0x8c1/0x1016 [ 56.119647][ T21] ? usb_port_suspend+0xa40/0xa40 [ 56.124900][ T21] ? mark_held_locks+0x9f/0xe0 [ 56.129739][ T21] ? _raw_spin_unlock_irq+0x24/0x30 [ 56.134926][ T21] hub_event+0x1ada/0x3590 [ 56.139331][ T21] ? hub_port_debounce+0x260/0x260 [ 56.144430][ T21] process_one_work+0x905/0x1570 [ 56.149457][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.155063][ T21] ? do_raw_spin_lock+0x11a/0x280 [ 56.160084][ T21] worker_thread+0x96/0xe20 [ 56.164582][ T21] ? process_one_work+0x1570/0x1570 [ 56.169770][ T21] kthread+0x30b/0x410 [ 56.173867][ T21] ? kthread_park+0x1a0/0x1a0 [ 56.178531][ T21] ret_from_fork+0x24/0x30 [ 56.183582][ T21] Kernel Offset: disabled [ 56.187945][ T21] Rebooting in 86400 seconds..