[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[ 13.794279][ T1662] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 44.193721][ C1] random: crng init done Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts. executing program [ 113.319293][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 113.559318][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 113.679393][ T12] usb 1-1: config 0 has an invalid interface number: 18 but max is 0 [ 113.687566][ T12] usb 1-1: config 0 has 2 interfaces, different from the descriptor's value: 1 [ 113.696573][ T12] usb 1-1: config 0 has no interface number 1 [ 113.702691][ T12] usb 1-1: config 0 interface 18 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 113.713227][ T12] usb 1-1: config 0 interface 0 altsetting 21 has 0 endpoint descriptors, different from the interface descriptor's value: 23 [ 113.726436][ T12] usb 1-1: config 0 interface 0 has no altsetting 0 [ 113.733070][ T12] usb 1-1: New USB device found, idVendor=2040, idProduct=b703, bcdDevice=d2.e7 [ 113.742140][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 113.751385][ T12] usb 1-1: config 0 descriptor?? executing program [ 114.039429][ T12] usb 1-1: string descriptor 0 read error: -71 [ 114.052975][ T12] usb 1-1: dvb_usb_v2: found a 'Hauppauge 117xxx ATSC+' in warm state [ 114.064967][ T12] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 114.075764][ T12] dvbdev: DVB: registering new adapter (Hauppauge 117xxx ATSC+) [ 114.083586][ T12] usb 1-1: media controller created [ 114.092782][ T12] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 114.108108][ T12] usb 1-1: selecting invalid altsetting 1 [ 114.114022][ T12] set interface failed [ 114.114033][ T12] ------------[ cut here ]------------ [ 114.123627][ T12] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 114.123661][ T12] WARNING: CPU: 0 PID: 12 at kernel/locking/mutex.c:938 __mutex_lock+0xd31/0x1360 [ 114.138600][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 114.145174][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc1+ #0 [ 114.152514][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.162640][ T12] Workqueue: usb_hub_wq hub_event [ 114.167653][ T12] Call Trace: [ 114.170922][ T12] dump_stack+0xca/0x13e [ 114.175156][ T12] ? __mutex_lock+0xcc0/0x1360 [ 114.179904][ T12] panic+0x2a3/0x6da [ 114.183785][ T12] ? add_taint.cold+0x16/0x16 [ 114.188436][ T12] ? __probe_kernel_read+0x188/0x1d0 [ 114.193695][ T12] ? __warn.cold+0x14/0x3a [ 114.198095][ T12] ? __warn+0xd5/0x1d0 [ 114.202136][ T12] ? __mutex_lock+0xd31/0x1360 [ 114.206885][ T12] __warn.cold+0x2f/0x3a [ 114.211102][ T12] ? __mutex_lock+0xd31/0x1360 [ 114.215839][ T12] report_bug+0x27b/0x2f0 [ 114.220141][ T12] do_error_trap+0x12b/0x1e0 [ 114.224705][ T12] ? __mutex_lock+0xd31/0x1360 [ 114.229454][ T12] do_invalid_op+0x32/0x40 [ 114.233863][ T12] ? __mutex_lock+0xd31/0x1360 [ 114.238599][ T12] invalid_op+0x23/0x30 [ 114.242743][ T12] RIP: 0010:__mutex_lock+0xd31/0x1360 [ 114.248089][ T12] Code: d2 0f 85 f6 05 00 00 44 8b 05 1b f3 17 02 45 85 c0 0f 85 0a f4 ff ff 48 c7 c6 20 89 c6 85 48 c7 c7 20 87 c6 85 e8 34 08 a2 fb <0f> 0b e9 f0 f3 ff ff 65 48 8b 1c 25 00 ef 01 00 be 08 00 00 00 48 [ 114.267669][ T12] RSP: 0018:ffff8881da20ef30 EFLAGS: 00010282 [ 114.273709][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 114.281669][ T12] RDX: 0000000000000000 RSI: ffffffff8128bf9d RDI: ffffed103b441dd8 [ 114.289628][ T12] RBP: ffff8881da20f0a0 R08: ffff8881da1f9800 R09: fffffbfff0d9e8e9 [ 114.297576][ T12] R10: fffffbfff0d9e8e8 R11: ffffffff86cf4743 R12: 0000000000000000 [ 114.305532][ T12] R13: dffffc0000000000 R14: ffff8881d43f93c8 R15: ffff8881d43f93c8 [ 114.313496][ T12] ? vprintk_func+0x7d/0x113 [ 114.318072][ T12] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 114.323101][ T12] ? find_held_lock+0x2d/0x110 [ 114.327845][ T12] ? vprintk_emit+0xe2/0x3e0 [ 114.332409][ T12] ? mutex_trylock+0x2c0/0x2c0 [ 114.337166][ T12] ? mark_lock+0xbc/0x1160 [ 114.341563][ T12] ? mark_held_locks+0x9f/0xe0 [ 114.346297][ T12] ? vprintk_emit+0x112/0x3e0 [ 114.350959][ T12] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 114.355955][ T12] mxl111sf_ctrl_msg+0xb8/0x210 [ 114.360781][ T12] mxl111sf_write_reg+0x8b/0x120 [ 114.365706][ T12] ? mxl111sf_frontend_attach_mercury_mh+0x940/0x940 [ 114.372355][ T12] ? usb_set_interface+0x79c/0xa50 [ 114.377452][ T12] mxl1x1sf_soft_reset+0x6b/0x190 [ 114.382465][ T12] mxl111sf_lgdt3305_frontend_attach.constprop.0+0x23e/0x790 [ 114.389909][ T12] mxl111sf_frontend_attach_atsc_mh+0x13/0x70 [ 114.396038][ T12] ? mxl111sf_lg2160_frontend_attach+0x900/0x900 [ 114.402351][ T12] dvb_usbv2_probe.cold+0x1e04/0x2567 [ 114.407698][ T12] ? dvb_usb_start_feed+0xb60/0xb60 [ 114.412869][ T12] ? rpm_callback+0x230/0x230 [ 114.417521][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 114.422793][ T12] ? __pm_runtime_resume+0x111/0x180 [ 114.428051][ T12] usb_probe_interface+0x305/0x7a0 [ 114.433155][ T12] ? usb_probe_device+0x100/0x100 [ 114.438156][ T12] really_probe+0x281/0x6d0 [ 114.442634][ T12] driver_probe_device+0x104/0x210 [ 114.447715][ T12] __device_attach_driver+0x1c2/0x220 [ 114.453059][ T12] ? driver_allows_async_probing+0x160/0x160 [ 114.459013][ T12] bus_for_each_drv+0x162/0x1e0 [ 114.463838][ T12] ? bus_rescan_devices+0x20/0x20 [ 114.468834][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 114.474612][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 114.479871][ T12] __device_attach+0x217/0x360 [ 114.484619][ T12] ? device_bind_driver+0xd0/0xd0 [ 114.489617][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 114.494874][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 114.500132][ T12] bus_probe_device+0x1e4/0x290 [ 114.504957][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 114.510828][ T12] device_add+0xae6/0x16f0 [ 114.515217][ T12] ? uevent_store+0x50/0x50 [ 114.519697][ T12] ? create_intf_ep_devs+0x1ba/0x230 [ 114.524964][ T12] usb_set_configuration+0xdf6/0x1670 [ 114.530313][ T12] generic_probe+0x9d/0xd5 [ 114.534703][ T12] usb_probe_device+0x99/0x100 [ 114.539476][ T12] ? usb_suspend+0x620/0x620 [ 114.544055][ T12] really_probe+0x281/0x6d0 [ 114.548535][ T12] driver_probe_device+0x104/0x210 [ 114.553623][ T12] __device_attach_driver+0x1c2/0x220 [ 114.558971][ T12] ? driver_allows_async_probing+0x160/0x160 [ 114.564926][ T12] bus_for_each_drv+0x162/0x1e0 [ 114.569771][ T12] ? bus_rescan_devices+0x20/0x20 [ 114.574780][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 114.580562][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 114.585843][ T12] __device_attach+0x217/0x360 [ 114.590592][ T12] ? device_bind_driver+0xd0/0xd0 [ 114.595697][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 114.600958][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 114.606215][ T12] bus_probe_device+0x1e4/0x290 [ 114.611042][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 114.616908][ T12] device_add+0xae6/0x16f0 [ 114.621311][ T12] ? uevent_store+0x50/0x50 [ 114.625802][ T12] usb_new_device.cold+0x6a4/0xe79 [ 114.630888][ T12] hub_event+0x1b5c/0x3640 [ 114.635280][ T12] ? hub_port_debounce+0x260/0x260 [ 114.640365][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 114.645884][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 114.651145][ T12] process_one_work+0x92b/0x1530 [ 114.656056][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 114.661407][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 114.666405][ T12] worker_thread+0x96/0xe20 [ 114.670885][ T12] ? process_one_work+0x1530/0x1530 [ 114.676057][ T12] kthread+0x318/0x420 [ 114.680112][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 114.685459][ T12] ret_from_fork+0x24/0x30 [ 114.690376][ T12] Kernel Offset: disabled [ 114.694693][ T12] Rebooting in 86400 seconds..