[info] Using makefile-style concurrent boot in runlevel 2. [ 14.953036][ 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 '10.128.10.62' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.992428][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 26.232530][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 26.352523][ T12] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0xF has invalid maxpacket 0 [ 26.362618][ T12] usb 1-1: New USB device found, idVendor=2040, idProduct=c601, bcdDevice=d7.ee [ 26.371631][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.380939][ T12] usb 1-1: config 0 descriptor?? executing program [ 26.682545][ T12] usb 1-1: string descriptor 0 read error: -71 [ 26.690910][ T12] usb 1-1: dvb_usb_v2: found a 'Hauppauge 126xxx ATSC' in warm state [ 26.702003][ T12] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 26.712687][ T12] dvbdev: DVB: registering new adapter (Hauppauge 126xxx ATSC) [ 26.720396][ T12] usb 1-1: media controller created [ 26.729372][ T12] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 26.744556][ T12] usb 1-1: selecting invalid altsetting 1 [ 26.750480][ T12] set interface failed [ 26.750487][ T12] ------------[ cut here ]------------ [ 26.760301][ T12] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 26.760333][ T12] WARNING: CPU: 0 PID: 12 at kernel/locking/mutex.c:912 __mutex_lock+0xd31/0x1360 [ 26.775587][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 26.782256][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc5+ #28 [ 26.789790][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.802231][ T12] Workqueue: usb_hub_wq hub_event [ 26.810252][ T12] Call Trace: [ 26.813722][ T12] dump_stack+0xca/0x13e [ 26.818038][ T12] ? __mutex_lock+0xd30/0x1360 [ 26.822873][ T12] panic+0x2a3/0x6da [ 26.826748][ T12] ? add_taint.cold+0x16/0x16 [ 26.831455][ T12] ? __probe_kernel_read+0x188/0x1d0 [ 26.837023][ T12] ? __warn.cold+0x5/0x4a [ 26.841436][ T12] ? __warn+0xe3/0x1e0 [ 26.845501][ T12] ? __mutex_lock+0xd31/0x1360 [ 26.850282][ T12] __warn.cold+0x20/0x4a [ 26.854612][ T12] ? __mutex_lock+0xd31/0x1360 [ 26.859353][ T12] report_bug+0x262/0x2a0 [ 26.863750][ T12] do_error_trap+0x12b/0x1e0 [ 26.868350][ T12] ? __mutex_lock+0xd31/0x1360 [ 26.873272][ T12] do_invalid_op+0x32/0x40 [ 26.877666][ T12] ? __mutex_lock+0xd31/0x1360 [ 26.882406][ T12] invalid_op+0x23/0x30 [ 26.886576][ T12] RIP: 0010:__mutex_lock+0xd31/0x1360 [ 26.891957][ T12] Code: d2 0f 85 f6 05 00 00 44 8b 05 4b f6 1c 02 45 85 c0 0f 85 0a f4 ff ff 48 c7 c6 e0 94 c6 85 48 c7 c7 80 92 c6 85 e8 e4 c4 a6 fb <0f> 0b e9 f0 f3 ff ff 65 48 8b 1c 25 00 ef 01 00 be 08 00 00 00 48 [ 26.911549][ T12] RSP: 0018:ffff8881da20ef60 EFLAGS: 00010282 [ 26.917609][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 26.926035][ T12] RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed103b441dde [ 26.934247][ T12] RBP: ffff8881da20f0d0 R08: ffff8881da1f9800 R09: fffffbfff0d9ee55 [ 26.942205][ T12] R10: fffffbfff0d9ee54 R11: ffffffff86cf72a3 R12: 0000000000000000 [ 26.950154][ T12] R13: dffffc0000000000 R14: ffff8881d29777c8 R15: ffff8881d29777c8 [ 26.959021][ T12] ? vprintk_func+0x7d/0x113 [ 26.963596][ T12] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 26.968708][ T12] ? find_held_lock+0x2d/0x110 [ 26.973454][ T12] ? vprintk_emit+0xe2/0x3e0 [ 26.978805][ T12] ? mutex_trylock+0x2c0/0x2c0 [ 26.983644][ T12] ? mark_lock+0xbc/0x1130 [ 26.988060][ T12] ? mark_held_locks+0x9f/0xe0 [ 26.992804][ T12] ? vprintk_emit+0x112/0x3e0 [ 26.997464][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 27.002754][ T12] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 27.007758][ T12] mxl111sf_ctrl_msg+0xb8/0x210 [ 27.012609][ T12] mxl111sf_write_reg+0x8b/0x120 [ 27.017529][ T12] ? mxl111sf_frontend_attach_mercury_mh+0x940/0x940 [ 27.024188][ T12] ? usb_set_interface+0x79c/0xa50 [ 27.029284][ T12] mxl1x1sf_soft_reset+0x6b/0x190 [ 27.034312][ T12] mxl111sf_lgdt3305_frontend_attach.constprop.0+0x23e/0x790 [ 27.041766][ T12] ? mxl111sf_lgdt3305_frontend_attach.constprop.0+0x790/0x790 [ 27.049303][ T12] dvb_usbv2_probe.cold+0x1e04/0x2567 [ 27.054653][ T12] ? dvb_usb_start_feed+0xb60/0xb60 [ 27.059945][ T12] ? rpm_callback+0x230/0x230 [ 27.064609][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 27.069893][ T12] ? __pm_runtime_resume+0x111/0x180 [ 27.075337][ T12] usb_probe_interface+0x305/0x7a0 [ 27.080950][ T12] ? usb_probe_device+0x100/0x100 [ 27.086061][ T12] really_probe+0x281/0x6d0 [ 27.090546][ T12] driver_probe_device+0x101/0x1b0 [ 27.095635][ T12] __device_attach_driver+0x1c2/0x220 [ 27.100994][ T12] ? driver_allows_async_probing+0x160/0x160 [ 27.107125][ T12] bus_for_each_drv+0x162/0x1e0 [ 27.112512][ T12] ? bus_rescan_devices+0x20/0x20 [ 27.117603][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.123478][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 27.128942][ T12] __device_attach+0x217/0x360 [ 27.133967][ T12] ? device_bind_driver+0xd0/0xd0 [ 27.138978][ T12] ? kobject_uevent_env+0x29e/0x1160 [ 27.144616][ T12] ? kobject_uevent_env+0x2a8/0x1160 [ 27.149972][ T12] bus_probe_device+0x1e4/0x290 [ 27.154918][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 27.160800][ T12] device_add+0xae6/0x16f0 [ 27.165198][ T12] ? uevent_store+0x50/0x50 [ 27.169699][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.175483][ T12] usb_set_configuration+0xdf6/0x1670 [ 27.180840][ T12] generic_probe+0x9d/0xd5 [ 27.185236][ T12] usb_probe_device+0x99/0x100 [ 27.190093][ T12] ? usb_suspend+0x620/0x620 [ 27.194659][ T12] really_probe+0x281/0x6d0 [ 27.199141][ T12] driver_probe_device+0x101/0x1b0 [ 27.204229][ T12] __device_attach_driver+0x1c2/0x220 [ 27.209611][ T12] ? driver_allows_async_probing+0x160/0x160 [ 27.215761][ T12] bus_for_each_drv+0x162/0x1e0 [ 27.220597][ T12] ? bus_rescan_devices+0x20/0x20 [ 27.225603][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.231414][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 27.237248][ T12] __device_attach+0x217/0x360 [ 27.246215][ T12] ? device_bind_driver+0xd0/0xd0 [ 27.253766][ T12] ? kobject_uevent_env+0x29e/0x1160 [ 27.259061][ T12] ? kobject_uevent_env+0x2a8/0x1160 [ 27.264320][ T12] bus_probe_device+0x1e4/0x290 [ 27.269541][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 27.275411][ T12] device_add+0xae6/0x16f0 [ 27.279801][ T12] ? uevent_store+0x50/0x50 [ 27.284273][ T12] usb_new_device.cold+0x6a4/0xe79 [ 27.289354][ T12] hub_event+0x1b5c/0x3640 [ 27.293753][ T12] ? hub_port_debounce+0x260/0x260 [ 27.298838][ T12] process_one_work+0x92b/0x1530 [ 27.303758][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 27.309103][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 27.314105][ T12] worker_thread+0x96/0xe20 [ 27.318776][ T12] ? process_one_work+0x1530/0x1530 [ 27.323952][ T12] kthread+0x318/0x420 [ 27.327994][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 27.333339][ T12] ret_from_fork+0x24/0x30 [ 27.338481][ T12] Kernel Offset: disabled [ 27.342784][ T12] Rebooting in 86400 seconds..