[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.898365][ T31] audit: type=1800 audit(1561977614.942:25): pid=11178 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.921755][ T31] audit: type=1800 audit(1561977614.962:26): pid=11178 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.962749][ T31] audit: type=1800 audit(1561977615.002:27): pid=11178 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.0.44' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.417252][T11330] IPVS: ftp: loaded support on port[0] = 21 [ 81.722643][ T3089] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 81.962534][ T3089] usb 1-1: Using ep0 maxpacket: 8 [ 82.082567][ T3089] usb 1-1: config 0 has an invalid interface number: 254 but max is 0 [ 82.090844][ T3089] usb 1-1: config 0 has no interface number 0 [ 82.097212][ T3089] usb 1-1: New USB device found, idVendor=0bda, idProduct=8150, bcdDevice=31.ce [ 82.106334][ T3089] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 82.115722][ T3089] usb 1-1: config 0 descriptor?? [ 82.554527][ T3089] ================================================================== [ 82.562651][ T3089] BUG: KMSAN: uninit-value in _mix_pool_bytes+0x7de/0x960 [ 82.569768][ T3089] CPU: 1 PID: 3089 Comm: kworker/1:2 Not tainted 5.2.0-rc4+ #7 [ 82.577301][ T3089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.587344][ T3089] Workqueue: usb_hub_wq hub_event [ 82.592344][ T3089] Call Trace: [ 82.595614][ T3089] dump_stack+0x191/0x1f0 [ 82.599938][ T3089] kmsan_report+0x162/0x2d0 [ 82.604468][ T3089] __msan_warning+0x75/0xe0 [ 82.608953][ T3089] _mix_pool_bytes+0x7de/0x960 [ 82.613708][ T3089] ? register_netdevice+0x1eab/0x2690 [ 82.619062][ T3089] add_device_randomness+0x776/0xfa0 [ 82.624334][ T3089] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 82.630559][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 82.636724][ T3089] register_netdevice+0x1eab/0x2690 [ 82.641951][ T3089] register_netdev+0x93/0xd0 [ 82.646520][ T3089] rtl8150_probe+0x11f8/0x1550 [ 82.651267][ T3089] ? pegasus_set_multicast+0x430/0xb00 [ 82.656699][ T3089] ? read_eprom_word+0xdd0/0xdd0 [ 82.661613][ T3089] usb_probe_interface+0xd19/0x1310 [ 82.666879][ T3089] ? usb_register_driver+0x7d0/0x7d0 [ 82.672141][ T3089] really_probe+0x1344/0x1d90 [ 82.676814][ T3089] driver_probe_device+0x1ba/0x510 [ 82.681919][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 82.687801][ T3089] __device_attach_driver+0x5b8/0x790 [ 82.693157][ T3089] bus_for_each_drv+0x28e/0x3b0 [ 82.697996][ T3089] ? deferred_probe_work_func+0x400/0x400 [ 82.703694][ T3089] __device_attach+0x489/0x750 [ 82.708444][ T3089] device_initial_probe+0x4a/0x60 [ 82.713532][ T3089] bus_probe_device+0x131/0x390 [ 82.718368][ T3089] device_add+0x25b5/0x2df0 [ 82.722875][ T3089] usb_set_configuration+0x309f/0x3710 [ 82.728324][ T3089] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 82.734397][ T3089] generic_probe+0xe7/0x280 [ 82.738880][ T3089] ? usb_choose_configuration+0xae0/0xae0 [ 82.744577][ T3089] usb_probe_device+0x146/0x200 [ 82.749405][ T3089] ? usb_register_device_driver+0x470/0x470 [ 82.755296][ T3089] really_probe+0x1344/0x1d90 [ 82.759956][ T3089] driver_probe_device+0x1ba/0x510 [ 82.765058][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 82.771609][ T3089] __device_attach_driver+0x5b8/0x790 [ 82.776977][ T3089] bus_for_each_drv+0x28e/0x3b0 [ 82.781803][ T3089] ? deferred_probe_work_func+0x400/0x400 [ 82.787501][ T3089] __device_attach+0x489/0x750 [ 82.792252][ T3089] device_initial_probe+0x4a/0x60 [ 82.797256][ T3089] bus_probe_device+0x131/0x390 [ 82.802094][ T3089] device_add+0x25b5/0x2df0 [ 82.806588][ T3089] usb_new_device+0x23e5/0x2fb0 [ 82.811429][ T3089] hub_event+0x5853/0x7320 [ 82.815850][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 82.821718][ T3089] ? led_work+0x720/0x720 [ 82.826023][ T3089] ? led_work+0x720/0x720 [ 82.830331][ T3089] process_one_work+0x1572/0x1f00 [ 82.835344][ T3089] worker_thread+0x111b/0x2460 [ 82.840097][ T3089] kthread+0x4b5/0x4f0 [ 82.844144][ T3089] ? process_one_work+0x1f00/0x1f00 [ 82.849323][ T3089] ? kthread_blkcg+0xf0/0xf0 [ 82.853890][ T3089] ret_from_fork+0x35/0x40 [ 82.858287][ T3089] [ 82.860591][ T3089] Uninit was stored to memory at: [ 82.865609][ T3089] kmsan_internal_chain_origin+0xcc/0x150 [ 82.871391][ T3089] kmsan_memcpy_memmove_metadata+0x9f9/0xe00 [ 82.877348][ T3089] kmsan_memcpy_metadata+0xb/0x10 [ 82.882348][ T3089] __msan_memcpy+0x56/0x70 [ 82.886742][ T3089] rtl8150_probe+0x114c/0x1550 [ 82.891477][ T3089] usb_probe_interface+0xd19/0x1310 [ 82.896652][ T3089] really_probe+0x1344/0x1d90 [ 82.901304][ T3089] driver_probe_device+0x1ba/0x510 [ 82.906386][ T3089] __device_attach_driver+0x5b8/0x790 [ 82.911728][ T3089] bus_for_each_drv+0x28e/0x3b0 [ 82.916554][ T3089] __device_attach+0x489/0x750 [ 82.921313][ T3089] device_initial_probe+0x4a/0x60 [ 82.926311][ T3089] bus_probe_device+0x131/0x390 [ 82.931131][ T3089] device_add+0x25b5/0x2df0 [ 82.935608][ T3089] usb_set_configuration+0x309f/0x3710 [ 82.941038][ T3089] generic_probe+0xe7/0x280 [ 82.945513][ T3089] usb_probe_device+0x146/0x200 [ 82.950341][ T3089] really_probe+0x1344/0x1d90 [ 82.954990][ T3089] driver_probe_device+0x1ba/0x510 [ 82.960074][ T3089] __device_attach_driver+0x5b8/0x790 [ 82.965419][ T3089] bus_for_each_drv+0x28e/0x3b0 [ 82.970244][ T3089] __device_attach+0x489/0x750 [ 82.975002][ T3089] device_initial_probe+0x4a/0x60 [ 82.980000][ T3089] bus_probe_device+0x131/0x390 [ 82.984827][ T3089] device_add+0x25b5/0x2df0 [ 82.989318][ T3089] usb_new_device+0x23e5/0x2fb0 [ 82.994161][ T3089] hub_event+0x5853/0x7320 [ 82.998556][ T3089] process_one_work+0x1572/0x1f00 [ 83.003551][ T3089] worker_thread+0x111b/0x2460 [ 83.008288][ T3089] kthread+0x4b5/0x4f0 [ 83.012334][ T3089] ret_from_fork+0x35/0x40 [ 83.016723][ T3089] [ 83.028590][ T3089] Local variable description: ----node_id.i@rtl8150_probe [ 83.035680][ T3089] Variable was created at: [ 83.040076][ T3089] rtl8150_probe+0xdce/0x1550 [ 83.044731][ T3089] usb_probe_interface+0xd19/0x1310 [ 83.049897][ T3089] ================================================================== [ 83.058120][ T3089] Disabling lock debugging due to kernel taint [ 83.064250][ T3089] Kernel panic - not syncing: panic_on_warn set ... [ 83.070815][ T3089] CPU: 1 PID: 3089 Comm: kworker/1:2 Tainted: G B 5.2.0-rc4+ #7 [ 83.079737][ T3089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.089779][ T3089] Workqueue: usb_hub_wq hub_event [ 83.095512][ T3089] Call Trace: [ 83.098793][ T3089] dump_stack+0x191/0x1f0 [ 83.103105][ T3089] panic+0x3c9/0xc1e [ 83.107027][ T3089] kmsan_report+0x2ca/0x2d0 [ 83.111512][ T3089] __msan_warning+0x75/0xe0 [ 83.115996][ T3089] _mix_pool_bytes+0x7de/0x960 [ 83.120753][ T3089] ? register_netdevice+0x1eab/0x2690 [ 83.126102][ T3089] add_device_randomness+0x776/0xfa0 [ 83.131384][ T3089] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 83.137518][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 83.143391][ T3089] register_netdevice+0x1eab/0x2690 [ 83.148673][ T3089] register_netdev+0x93/0xd0 [ 83.153244][ T3089] rtl8150_probe+0x11f8/0x1550 [ 83.157991][ T3089] ? pegasus_set_multicast+0x430/0xb00 [ 83.163432][ T3089] ? read_eprom_word+0xdd0/0xdd0 [ 83.168366][ T3089] usb_probe_interface+0xd19/0x1310 [ 83.173549][ T3089] ? usb_register_driver+0x7d0/0x7d0 [ 83.178809][ T3089] really_probe+0x1344/0x1d90 [ 83.183471][ T3089] driver_probe_device+0x1ba/0x510 [ 83.188559][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 83.194434][ T3089] __device_attach_driver+0x5b8/0x790 [ 83.199789][ T3089] bus_for_each_drv+0x28e/0x3b0 [ 83.204618][ T3089] ? deferred_probe_work_func+0x400/0x400 [ 83.210316][ T3089] __device_attach+0x489/0x750 [ 83.215061][ T3089] device_initial_probe+0x4a/0x60 [ 83.220062][ T3089] bus_probe_device+0x131/0x390 [ 83.224910][ T3089] device_add+0x25b5/0x2df0 [ 83.229427][ T3089] usb_set_configuration+0x309f/0x3710 [ 83.234883][ T3089] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 83.240949][ T3089] generic_probe+0xe7/0x280 [ 83.246099][ T3089] ? usb_choose_configuration+0xae0/0xae0 [ 83.251802][ T3089] usb_probe_device+0x146/0x200 [ 83.256630][ T3089] ? usb_register_device_driver+0x470/0x470 [ 83.263402][ T3089] really_probe+0x1344/0x1d90 [ 83.268069][ T3089] driver_probe_device+0x1ba/0x510 [ 83.273162][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 83.279034][ T3089] __device_attach_driver+0x5b8/0x790 [ 83.284391][ T3089] bus_for_each_drv+0x28e/0x3b0 [ 83.289218][ T3089] ? deferred_probe_work_func+0x400/0x400 [ 83.294920][ T3089] __device_attach+0x489/0x750 [ 83.299673][ T3089] device_initial_probe+0x4a/0x60 [ 83.304676][ T3089] bus_probe_device+0x131/0x390 [ 83.309510][ T3089] device_add+0x25b5/0x2df0 [ 83.314003][ T3089] usb_new_device+0x23e5/0x2fb0 [ 83.318840][ T3089] hub_event+0x5853/0x7320 [ 83.323263][ T3089] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 83.329133][ T3089] ? led_work+0x720/0x720 [ 83.333437][ T3089] ? led_work+0x720/0x720 [ 83.337746][ T3089] process_one_work+0x1572/0x1f00 [ 83.342762][ T3089] worker_thread+0x111b/0x2460 [ 83.347519][ T3089] kthread+0x4b5/0x4f0 [ 83.351564][ T3089] ? process_one_work+0x1f00/0x1f00 [ 83.356743][ T3089] ? kthread_blkcg+0xf0/0xf0 [ 83.361308][ T3089] ret_from_fork+0x35/0x40 [ 83.366870][ T3089] Kernel Offset: disabled [ 83.371191][ T3089] Rebooting in 86400 seconds..