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 '10.128.0.146' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.491375][ T83] usb 1-1: new low-speed USB device number 2 using dummy_hcd [ 40.870990][ T83] usb 1-1: config 13 has an invalid interface number: 149 but max is 1 [ 40.879667][ T83] usb 1-1: config 13 has no interface number 1 [ 40.886111][ T83] usb 1-1: config 13 interface 149 altsetting 93 endpoint 0x1 has invalid maxpacket 288, setting to 8 [ 40.897129][ T83] usb 1-1: config 13 interface 149 altsetting 93 endpoint 0x5 has invalid maxpacket 311, setting to 8 [ 40.908156][ T83] usb 1-1: config 13 interface 149 altsetting 93 endpoint 0x7 has invalid maxpacket 209, setting to 8 [ 40.919435][ T83] usb 1-1: config 13 interface 149 altsetting 93 endpoint 0xA has an invalid bInterval 255, changing to 4 [ 40.931614][ T83] usb 1-1: config 13 interface 149 altsetting 93 endpoint 0xA has invalid maxpacket 986, setting to 0 [ 40.942626][ T83] usb 1-1: config 13 interface 0 has no altsetting 0 [ 40.949748][ T83] usb 1-1: config 13 interface 149 has no altsetting 0 [ 41.190970][ T83] usb 1-1: string descriptor 0 read error: -22 [ 41.197230][ T83] usb 1-1: New USB device found, idVendor=2040, idProduct=d8e4, bcdDevice=f6.8f [ 41.206329][ T83] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 41.253099][ T83] usb 1-1: dvb_usb_v2: found a 'Hauppauge 138xxx DVBT' in warm state [ 41.263749][ T83] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 41.274415][ T83] dvbdev: DVB: registering new adapter (Hauppauge 138xxx DVBT) [ 41.282118][ T83] usb 1-1: media controller created [ 41.291045][ T83] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 41.306007][ T83] usb 1-1: selecting invalid altsetting 2 [ 41.311866][ T83] set interface failed [ 41.311878][ T83] ------------[ cut here ]------------ [ 41.321432][ T83] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 41.321478][ T83] WARNING: CPU: 1 PID: 83 at kernel/locking/mutex.c:938 __mutex_lock+0xd31/0x1360 [ 41.336463][ T83] Kernel panic - not syncing: panic_on_warn set ... [ 41.343058][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.4.0-rc6+ #0 [ 41.350495][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.360558][ T83] Workqueue: usb_hub_wq hub_event [ 41.365578][ T83] Call Trace: [ 41.368986][ T83] dump_stack+0xca/0x13e [ 41.373232][ T83] ? __mutex_lock+0xcd0/0x1360 [ 41.378060][ T83] panic+0x2aa/0x6e1 [ 41.381972][ T83] ? add_taint.cold+0x16/0x16 [ 41.386679][ T83] ? __probe_kernel_read+0x188/0x1d0 [ 41.391974][ T83] ? __warn.cold+0x14/0x33 [ 41.396531][ T83] ? __warn+0xd5/0x1d0 [ 41.400602][ T83] ? __mutex_lock+0xd31/0x1360 [ 41.405455][ T83] __warn.cold+0x2f/0x33 [ 41.409711][ T83] ? __mutex_lock+0xd31/0x1360 [ 41.414461][ T83] report_bug+0x27b/0x2f0 [ 41.418772][ T83] do_error_trap+0x12b/0x1e0 [ 41.423339][ T83] ? __mutex_lock+0xd31/0x1360 [ 41.428092][ T83] do_invalid_op+0x32/0x40 [ 41.432583][ T83] ? __mutex_lock+0xd31/0x1360 [ 41.437333][ T83] invalid_op+0x23/0x30 [ 41.441607][ T83] RIP: 0010:__mutex_lock+0xd31/0x1360 [ 41.446973][ T83] Code: d2 0f 85 f6 05 00 00 44 8b 05 2b 6c 17 02 45 85 c0 0f 85 0a f4 ff ff 48 c7 c6 a0 8a c6 85 48 c7 c7 a0 88 c6 85 e8 34 c2 a4 fb <0f> 0b e9 f0 f3 ff ff 65 48 8b 1c 25 00 ef 01 00 be 08 00 00 00 48 [ 41.466651][ T83] RSP: 0018:ffff8881d89eef00 EFLAGS: 00010282 [ 41.472875][ T83] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 41.480838][ T83] RDX: 0000000000000000 RSI: ffffffff8128c9cd RDI: ffffed103b13ddd2 [ 41.488823][ T83] RBP: ffff8881d89ef070 R08: ffff8881d8c54800 R09: fffffbfff0d9e975 [ 41.496908][ T83] R10: fffffbfff0d9e974 R11: ffffffff86cf4ba3 R12: 0000000000000000 [ 41.504883][ T83] R13: dffffc0000000000 R14: ffff8881d27209c8 R15: ffff8881d27209c8 [ 41.512853][ T83] ? vprintk_func+0x7d/0x113 [ 41.517426][ T83] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 41.522428][ T83] ? find_held_lock+0x2d/0x110 [ 41.527181][ T83] ? vprintk_emit+0xe2/0x3e0 [ 41.531750][ T83] ? mutex_trylock+0x2c0/0x2c0 [ 41.536505][ T83] ? mark_lock+0xbc/0x1160 [ 41.540992][ T83] ? mark_held_locks+0x9f/0xe0 [ 41.545770][ T83] ? vprintk_emit+0x112/0x3e0 [ 41.550596][ T83] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 41.555634][ T83] mxl111sf_ctrl_msg+0xb8/0x210 [ 41.560498][ T83] mxl111sf_write_reg+0x8b/0x120 [ 41.565421][ T83] ? mxl111sf_frontend_attach_mercury_mh+0x940/0x940 [ 41.572077][ T83] ? usb_set_interface+0x79c/0xa50 [ 41.577167][ T83] mxl1x1sf_soft_reset+0x6b/0x190 [ 41.582185][ T83] mxl111sf_attach_demod+0x279/0x730 [ 41.587449][ T83] ? mxl111sf_attach_demod+0x730/0x730 [ 41.592886][ T83] dvb_usbv2_probe.cold+0x1e04/0x2567 [ 41.598237][ T83] ? dvb_usb_start_feed+0xb60/0xb60 [ 41.603415][ T83] ? rpm_callback+0x230/0x230 [ 41.608092][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 41.613386][ T83] ? __pm_runtime_resume+0x111/0x180 [ 41.618655][ T83] usb_probe_interface+0x305/0x7a0 [ 41.623750][ T83] ? usb_probe_device+0x100/0x100 [ 41.628777][ T83] really_probe+0x281/0x6d0 [ 41.633261][ T83] driver_probe_device+0x104/0x210 [ 41.638792][ T83] __device_attach_driver+0x1c2/0x220 [ 41.644185][ T83] ? driver_allows_async_probing+0x160/0x160 [ 41.650149][ T83] bus_for_each_drv+0x162/0x1e0 [ 41.655016][ T83] ? bus_rescan_devices+0x20/0x20 [ 41.660042][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 41.665832][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 41.671184][ T83] __device_attach+0x217/0x360 [ 41.675954][ T83] ? device_bind_driver+0xd0/0xd0 [ 41.680958][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 41.686221][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 41.691496][ T83] bus_probe_device+0x1e4/0x290 [ 41.696331][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 41.702227][ T83] device_add+0xae6/0x16f0 [ 41.706620][ T83] ? uevent_store+0x50/0x50 [ 41.711104][ T83] usb_set_configuration+0xdf6/0x1670 [ 41.716557][ T83] generic_probe+0x9d/0xd5 [ 41.720969][ T83] usb_probe_device+0x99/0x100 [ 41.725724][ T83] ? usb_suspend+0x620/0x620 [ 41.730307][ T83] really_probe+0x281/0x6d0 [ 41.734791][ T83] driver_probe_device+0x104/0x210 [ 41.739894][ T83] __device_attach_driver+0x1c2/0x220 [ 41.745269][ T83] ? driver_allows_async_probing+0x160/0x160 [ 41.751235][ T83] bus_for_each_drv+0x162/0x1e0 [ 41.756067][ T83] ? bus_rescan_devices+0x20/0x20 [ 41.761071][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 41.766986][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 41.772256][ T83] __device_attach+0x217/0x360 [ 41.777003][ T83] ? device_bind_driver+0xd0/0xd0 [ 41.782026][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 41.787289][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 41.792568][ T83] bus_probe_device+0x1e4/0x290 [ 41.797429][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 41.803364][ T83] device_add+0xae6/0x16f0 [ 41.807772][ T83] ? uevent_store+0x50/0x50 [ 41.812578][ T83] usb_new_device.cold+0x6a4/0xe79 [ 41.817785][ T83] hub_event+0x1df8/0x3800 [ 41.822186][ T83] ? hub_port_debounce+0x260/0x260 [ 41.827280][ T83] ? find_held_lock+0x2d/0x110 [ 41.832026][ T83] ? mark_held_locks+0xe0/0xe0 [ 41.836770][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 41.842348][ T83] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 41.847618][ T83] process_one_work+0x92b/0x1530 [ 41.852538][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 41.857895][ T83] ? do_raw_spin_lock+0x11a/0x280 [ 41.863041][ T83] worker_thread+0x96/0xe20 [ 41.867529][ T83] ? process_one_work+0x1530/0x1530 [ 41.872724][ T83] kthread+0x318/0x420 [ 41.876788][ T83] ? kthread_create_on_node+0xf0/0xf0 [ 41.882139][ T83] ret_from_fork+0x24/0x30 [ 41.887376][ T83] Kernel Offset: disabled [ 41.891719][ T83] Rebooting in 86400 seconds..