[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. [ 14.631343][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.225' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 21.960432][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 22.200453][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 22.320516][ T83] usb 1-1: New USB device found, idVendor=0af7, idProduct=0101, bcdDevice=5c.31 [ 22.329666][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 22.338901][ T83] usb 1-1: config 0 descriptor?? [ 22.382581][ T83] usb 1-1: selecting invalid altsetting 1 [ 22.388442][ T83] flexcop_usb: running at HIGH speed. executing program [ 22.590457][ T83] flexcop_usb: error while writing dword from 34 (520). [ 22.610454][ T83] flexcop_usb: error while writing dword from 36 (528). [ 22.660489][ T83] flexcop_usb: error while reading dword from 161 (516). [ 22.680469][ T83] flexcop_usb: error while writing dword from 33 (516). [ 22.730500][ T83] flexcop_usb: error while writing dword from 33 (516). [ 22.750437][ T83] flexcop_usb: error while reading dword from 161 (516). [ 22.770476][ T83] flexcop_usb: error while reading dword from 247 (1820). [ 22.790438][ T83] flexcop_usb: error while writing dword from 119 (1820). [ 22.810442][ T83] flexcop_usb: error while reading dword from 176 (768). [ 22.830437][ T83] flexcop_usb: error while reading dword from 162 (520). [ 22.850434][ T83] flexcop_usb: error while writing dword from 48 (768). [ 22.870480][ T83] flexcop_usb: error while writing dword from 34 (520). [ 22.890460][ T83] flexcop_usb: error while reading dword from 176 (768). [ 22.910443][ T83] flexcop_usb: error while reading dword from 162 (520). [ 22.930486][ T83] flexcop_usb: error while writing dword from 48 (768). [ 22.950432][ T83] flexcop_usb: error while writing dword from 34 (520). [ 22.970454][ T83] flexcop_usb: error while reading dword from 177 (772). [ 22.990460][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.010454][ T83] flexcop_usb: error while writing dword from 49 (772). [ 23.030423][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.050446][ T83] flexcop_usb: error while reading dword from 177 (772). [ 23.070432][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.090447][ T83] flexcop_usb: error while writing dword from 49 (772). [ 23.110425][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.130518][ T83] flexcop_usb: error while reading dword from 178 (776). [ 23.150446][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.170433][ T83] flexcop_usb: error while writing dword from 50 (776). [ 23.190428][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.210458][ T83] flexcop_usb: error while reading dword from 178 (776). [ 23.230441][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.250461][ T83] flexcop_usb: error while writing dword from 50 (776). [ 23.270447][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.290435][ T83] flexcop_usb: error while writing dword from 51 (780). [ 23.310453][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.330446][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.350442][ T83] flexcop_usb: error while reading dword from 178 (776). [ 23.370421][ T83] flexcop_usb: error while writing dword from 50 (776). [ 23.390448][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.410421][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.430441][ T83] flexcop_usb: error while reading dword from 162 (520). [ 23.450416][ T83] flexcop_usb: error while writing dword from 34 (520). [ 23.457473][ T83] dvbdev: DVB: registering new adapter (FlexCop Digital TV device) [ 23.490456][ T83] b2c2-flexcop: reading of MAC address failed. [ 23.490456][ T83] [ 23.550447][ T83] CX24123: wrong demod revision: 0 [ 23.850453][ T83] nxt200x: Unknown/Unsupported NXT chip: 00 00 00 00 00 [ 23.870506][ T83] lgdt330x 0-0059: Demod loaded for LGDT3303 chip [ 23.877774][ T83] tuner-simple 0-0061: creating new instance [ 23.883996][ T83] tuner-simple 0-0061: type set to 64 (LG TDVS-H06xF) [ 23.890955][ T83] b2c2-flexcop: found 'LG Electronics LGDT3303 VSB/QAM Frontend' . [ 23.899028][ T83] usb 1-1: DVB: registering adapter 0 frontend 0 (LG Electronics LGDT3303 VSB/QAM Frontend)... [ 23.910711][ T83] b2c2-flexcop: initialization of 'Air2PC/AirStar 2 ATSC 3rd generation (HD5000)' at the 'USB' bus controlled by a 'FlexCopIII' complete [ 23.924937][ T83] kasan: CONFIG_KASAN_INLINE enabled [ 23.930268][ T83] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.938460][ T83] general protection fault: 0000 [#1] SMP KASAN [ 23.944719][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.4.0-rc5+ #0 [ 23.952075][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.962112][ T83] Workqueue: usb_hub_wq hub_event [ 23.967115][ T83] RIP: 0010:flexcop_usb_probe.cold+0x1cb/0x7bd [ 23.973271][ T83] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 74 05 e8 81 ec 61 fd 48 8b 5b 18 b8 ff ff 37 00 48 c1 e0 2a 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 c1 [ 23.992863][ T83] RSP: 0018:ffff8881d89ef298 EFLAGS: 00010247 [ 23.998906][ T83] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84037d3b [ 24.006862][ T83] RDX: 0000000000000000 RSI: ffffffff84037dfb RDI: 0000000000000004 [ 24.014913][ T83] RBP: ffff8881d71ad008 R08: ffff8881d8c54800 R09: ffffed103b665d58 [ 24.023418][ T83] R10: ffffed103b665d57 R11: ffff8881db32eabf R12: ffff8881d71ad048 [ 24.031379][ T83] R13: 0000000000000000 R14: ffff8881d71ad000 R15: ffff8881d10b8000 [ 24.039345][ T83] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 24.048683][ T83] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.055767][ T83] CR2: 0000000001e361f8 CR3: 00000001d16dd000 CR4: 00000000001406e0 [ 24.063717][ T83] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.071712][ T83] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.079659][ T83] Call Trace: [ 24.082934][ T83] ? rpm_callback+0x230/0x230 [ 24.087598][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 24.092860][ T83] ? __pm_runtime_resume+0x111/0x180 [ 24.098124][ T83] usb_probe_interface+0x305/0x7a0 [ 24.103213][ T83] ? usb_probe_device+0x100/0x100 [ 24.108228][ T83] really_probe+0x281/0x6d0 [ 24.112714][ T83] driver_probe_device+0x104/0x210 [ 24.117803][ T83] __device_attach_driver+0x1c2/0x220 [ 24.123152][ T83] ? driver_allows_async_probing+0x160/0x160 [ 24.129119][ T83] bus_for_each_drv+0x162/0x1e0 [ 24.133946][ T83] ? bus_rescan_devices+0x20/0x20 [ 24.138966][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 24.144749][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 24.150021][ T83] __device_attach+0x217/0x360 [ 24.154760][ T83] ? device_bind_driver+0xd0/0xd0 [ 24.159759][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 24.165282][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 24.170540][ T83] bus_probe_device+0x1e4/0x290 [ 24.175381][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 24.181248][ T83] device_add+0xae6/0x16f0 [ 24.185684][ T83] ? uevent_store+0x50/0x50 [ 24.190174][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 24.195981][ T83] usb_set_configuration+0xdf6/0x1670 [ 24.201339][ T83] generic_probe+0x9d/0xd5 [ 24.205753][ T83] usb_probe_device+0x99/0x100 [ 24.210930][ T83] ? usb_suspend+0x620/0x620 [ 24.215782][ T83] really_probe+0x281/0x6d0 [ 24.220278][ T83] driver_probe_device+0x104/0x210 [ 24.225374][ T83] __device_attach_driver+0x1c2/0x220 [ 24.230722][ T83] ? driver_allows_async_probing+0x160/0x160 [ 24.236677][ T83] bus_for_each_drv+0x162/0x1e0 [ 24.241503][ T83] ? bus_rescan_devices+0x20/0x20 [ 24.246679][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 24.252469][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 24.257729][ T83] __device_attach+0x217/0x360 [ 24.262468][ T83] ? device_bind_driver+0xd0/0xd0 [ 24.267471][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 24.272737][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 24.277998][ T83] bus_probe_device+0x1e4/0x290 [ 24.282852][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 24.288741][ T83] device_add+0xae6/0x16f0 [ 24.293166][ T83] ? uevent_store+0x50/0x50 [ 24.297784][ T83] usb_new_device.cold+0x6a4/0xe79 [ 24.302875][ T83] hub_event+0x1df8/0x3800 [ 24.307380][ T83] ? hub_port_debounce+0x260/0x260 [ 24.312469][ T83] ? find_held_lock+0x2d/0x110 [ 24.317211][ T83] ? mark_held_locks+0xe0/0xe0 [ 24.321953][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 24.327487][ T83] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 24.332839][ T83] process_one_work+0x92b/0x1530 [ 24.337754][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 24.343190][ T83] ? do_raw_spin_lock+0x11a/0x280 [ 24.348200][ T83] worker_thread+0x96/0xe20 [ 24.352691][ T83] ? process_one_work+0x1530/0x1530 [ 24.357914][ T83] kthread+0x318/0x420 [ 24.361962][ T83] ? kthread_create_on_node+0xf0/0xf0 [ 24.367311][ T83] ret_from_fork+0x24/0x30 [ 24.371730][ T83] Modules linked in: [ 24.375668][ T83] ---[ end trace 11c698662666b0cd ]--- [ 24.381178][ T83] RIP: 0010:flexcop_usb_probe.cold+0x1cb/0x7bd [ 24.387322][ T83] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 74 05 e8 81 ec 61 fd 48 8b 5b 18 b8 ff ff 37 00 48 c1 e0 2a 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 c1 [ 24.406934][ T83] RSP: 0018:ffff8881d89ef298 EFLAGS: 00010247 [ 24.413005][ T83] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84037d3b [ 24.420979][ T83] RDX: 0000000000000000 RSI: ffffffff84037dfb RDI: 0000000000000004 [ 24.428958][ T83] RBP: ffff8881d71ad008 R08: ffff8881d8c54800 R09: ffffed103b665d58 [ 24.436941][ T83] R10: ffffed103b665d57 R11: ffff8881db32eabf R12: ffff8881d71ad048 [ 24.444923][ T83] R13: 0000000000000000 R14: ffff8881d71ad000 R15: ffff8881d10b8000 [ 24.452923][ T83] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 24.461872][ T83] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.468435][ T83] CR2: 0000000001e361f8 CR3: 00000001d16dd000 CR4: 00000000001406e0 [ 24.476418][ T83] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.484394][ T83] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.492368][ T83] Kernel panic - not syncing: Fatal exception [ 24.499181][ T83] Kernel Offset: disabled [ 24.503498][ T83] Rebooting in 86400 seconds..