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 '10.128.1.22' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.160293][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 47.400265][ T22] usb 1-1: Using ep0 maxpacket: 16 [ 47.520335][ T22] usb 1-1: config 1 has an invalid interface number: 191 but max is 0 [ 47.528599][ T22] usb 1-1: config 1 has 2 interfaces, different from the descriptor's value: 1 [ 47.537683][ T22] usb 1-1: config 1 has no interface number 1 [ 47.543831][ T22] usb 1-1: config 1 interface 191 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 47.554467][ T22] usb 1-1: config 1 interface 0 altsetting 21 has 0 endpoint descriptors, different from the interface descriptor's value: 23 [ 47.567496][ T22] usb 1-1: config 1 interface 0 has no altsetting 0 [ 47.574117][ T22] usb 1-1: New USB device found, idVendor=2040, idProduct=c609, bcdDevice=34.61 [ 47.583145][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 executing program [ 47.870336][ T22] usb 1-1: string descriptor 0 read error: -71 [ 47.883234][ T22] usb 1-1: dvb_usb_v2: found a 'Hauppauge 126xxx ATSC' in warm state [ 47.892973][ T22] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 47.903524][ T22] dvbdev: DVB: registering new adapter (Hauppauge 126xxx ATSC) [ 47.911202][ T22] usb 1-1: media controller created [ 47.920016][ T22] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 47.934959][ T22] usb 1-1: selecting invalid altsetting 1 [ 47.940707][ T22] set interface failed [ 47.940711][ T22] ------------[ cut here ]------------ [ 47.950243][ T22] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 47.950284][ T22] WARNING: CPU: 1 PID: 22 at kernel/locking/mutex.c:938 __mutex_lock+0xd31/0x1360 [ 47.965237][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 47.971797][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.3.0+ #0 [ 47.978788][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.988838][ T22] Workqueue: usb_hub_wq hub_event [ 47.993951][ T22] Call Trace: [ 47.997275][ T22] dump_stack+0xca/0x13e [ 48.001513][ T22] ? __mutex_lock+0xcc0/0x1360 [ 48.006252][ T22] panic+0x2a3/0x6da [ 48.010129][ T22] ? add_taint.cold+0x16/0x16 [ 48.014812][ T22] ? __probe_kernel_read+0x188/0x1d0 [ 48.020074][ T22] ? __warn.cold+0x5/0x4a [ 48.024376][ T22] ? __warn+0xe3/0x1e0 [ 48.028420][ T22] ? __mutex_lock+0xd31/0x1360 [ 48.033161][ T22] __warn.cold+0x20/0x4a [ 48.037380][ T22] ? __mutex_lock+0xd31/0x1360 [ 48.042122][ T22] report_bug+0x262/0x2a0 [ 48.046467][ T22] do_error_trap+0x12b/0x1e0 [ 48.051033][ T22] ? __mutex_lock+0xd31/0x1360 [ 48.055795][ T22] do_invalid_op+0x32/0x40 [ 48.060187][ T22] ? __mutex_lock+0xd31/0x1360 [ 48.064934][ T22] invalid_op+0x23/0x30 [ 48.069079][ T22] RIP: 0010:__mutex_lock+0xd31/0x1360 [ 48.074425][ T22] Code: d2 0f 85 f6 05 00 00 44 8b 05 db fb 37 02 45 85 c0 0f 85 0a f4 ff ff 48 c7 c6 00 9b c6 85 48 c7 c7 a0 98 c6 85 e8 e4 35 a1 fb <0f> 0b e9 f0 f3 ff ff 65 48 8b 1c 25 00 ef 01 00 be 08 00 00 00 48 [ 48.094003][ T22] RSP: 0018:ffff8881d968ef50 EFLAGS: 00010286 [ 48.100043][ T22] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 48.107990][ T22] RDX: 0000000000000000 RSI: ffffffff8128d3fd RDI: ffffed103b2d1ddc [ 48.115941][ T22] RBP: ffff8881d968f0c0 R08: ffff8881da236000 R09: fffffbfff0ddea99 [ 48.123888][ T22] R10: fffffbfff0ddea98 R11: ffffffff86ef54c3 R12: 0000000000000000 [ 48.131841][ T22] R13: dffffc0000000000 R14: ffff8881d2db8648 R15: ffff8881d2db8648 [ 48.139821][ T22] ? vprintk_func+0x7d/0x113 [ 48.144422][ T22] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 48.149422][ T22] ? find_held_lock+0x2d/0x110 [ 48.154193][ T22] ? vprintk_emit+0xe2/0x3e0 [ 48.158757][ T22] ? mutex_trylock+0x2c0/0x2c0 [ 48.163496][ T22] ? uevent_store+0x50/0x50 [ 48.167978][ T22] ? mark_lock+0xbc/0x1160 [ 48.172403][ T22] ? mark_held_locks+0x9f/0xe0 [ 48.177146][ T22] ? vprintk_emit+0x112/0x3e0 [ 48.181796][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.187055][ T22] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 48.192053][ T22] mxl111sf_ctrl_msg+0xb8/0x210 [ 48.196878][ T22] mxl111sf_write_reg+0x8b/0x120 [ 48.201806][ T22] ? mxl111sf_frontend_attach_mercury_mh+0x940/0x940 [ 48.208453][ T22] ? usb_set_interface+0x79c/0xa50 [ 48.213540][ T22] mxl1x1sf_soft_reset+0x6b/0x190 [ 48.218553][ T22] mxl111sf_lgdt3305_frontend_attach.constprop.0+0x23e/0x790 [ 48.225907][ T22] ? mxl111sf_lgdt3305_frontend_attach.constprop.0+0x790/0x790 [ 48.233423][ T22] dvb_usbv2_probe.cold+0x1e04/0x2567 [ 48.238769][ T22] ? dvb_usb_start_feed+0xb60/0xb60 [ 48.243944][ T22] ? rpm_callback+0x230/0x230 [ 48.248595][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.253851][ T22] ? __pm_runtime_resume+0x111/0x180 [ 48.259116][ T22] usb_probe_interface+0x305/0x7a0 [ 48.264214][ T22] ? usb_probe_device+0x100/0x100 [ 48.269212][ T22] really_probe+0x281/0x6d0 [ 48.273690][ T22] driver_probe_device+0x104/0x210 [ 48.278775][ T22] __device_attach_driver+0x1c2/0x220 [ 48.284120][ T22] ? driver_allows_async_probing+0x160/0x160 [ 48.290073][ T22] bus_for_each_drv+0x162/0x1e0 [ 48.294915][ T22] ? bus_rescan_devices+0x20/0x20 [ 48.299913][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 48.305694][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.310954][ T22] __device_attach+0x217/0x360 [ 48.315691][ T22] ? device_bind_driver+0xd0/0xd0 [ 48.320691][ T22] ? kobject_uevent_env+0x29e/0x1150 [ 48.325948][ T22] ? kobject_uevent_env+0x2a8/0x1150 [ 48.331221][ T22] bus_probe_device+0x1e4/0x290 [ 48.336060][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 48.341946][ T22] device_add+0xae6/0x16f0 [ 48.346338][ T22] ? uevent_store+0x50/0x50 [ 48.350817][ T22] ? create_intf_ep_devs+0x1ba/0x230 [ 48.356093][ T22] usb_set_configuration+0xdf6/0x1670 [ 48.361439][ T22] generic_probe+0x9d/0xd5 [ 48.365836][ T22] usb_probe_device+0x99/0x100 [ 48.370573][ T22] ? usb_suspend+0x620/0x620 [ 48.375134][ T22] really_probe+0x281/0x6d0 [ 48.379611][ T22] driver_probe_device+0x104/0x210 [ 48.384696][ T22] __device_attach_driver+0x1c2/0x220 [ 48.390052][ T22] ? driver_allows_async_probing+0x160/0x160 [ 48.396017][ T22] bus_for_each_drv+0x162/0x1e0 [ 48.400839][ T22] ? bus_rescan_devices+0x20/0x20 [ 48.405843][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 48.411622][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.416881][ T22] __device_attach+0x217/0x360 [ 48.421617][ T22] ? device_bind_driver+0xd0/0xd0 [ 48.426629][ T22] ? kobject_uevent_env+0x29e/0x1150 [ 48.431888][ T22] ? kobject_uevent_env+0x2a8/0x1150 [ 48.437239][ T22] bus_probe_device+0x1e4/0x290 [ 48.442074][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 48.447951][ T22] device_add+0xae6/0x16f0 [ 48.452340][ T22] ? uevent_store+0x50/0x50 [ 48.456820][ T22] usb_new_device.cold+0x6a4/0xe79 [ 48.461903][ T22] hub_event+0x1b5c/0x3640 [ 48.466294][ T22] ? hub_port_debounce+0x260/0x260 [ 48.471381][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 48.476900][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 48.482158][ T22] process_one_work+0x92b/0x1530 [ 48.487072][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 48.492435][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 48.497487][ T22] worker_thread+0x96/0xe20 [ 48.502010][ T22] ? process_one_work+0x1530/0x1530 [ 48.507184][ T22] kthread+0x318/0x420 [ 48.511350][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 48.516699][ T22] ret_from_fork+0x24/0x30 [ 48.521673][ T22] Kernel Offset: disabled [ 48.525982][ T22] Rebooting in 86400 seconds..