[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 98.021213][ T32] audit: type=1800 audit(1564067582.087:25): pid=11527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 98.045668][ T32] audit: type=1800 audit(1564067582.117:26): pid=11527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 98.083033][ T32] audit: type=1800 audit(1564067582.137:27): pid=11527 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.241' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 111.192253][ T826] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 111.432168][ T826] usb 1-1: Using ep0 maxpacket: 8 [ 111.552373][ T826] usb 1-1: config 0 has an invalid interface number: 186 but max is 0 [ 111.560650][ T826] usb 1-1: config 0 has no interface number 0 [ 111.566926][ T826] usb 1-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 111.576867][ T826] usb 1-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 111.587038][ T826] usb 1-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 111.596179][ T826] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 111.605808][ T826] usb 1-1: config 0 descriptor?? [ 111.644310][ T826] smsc75xx v1.0.0 [ 112.082336][ T826] ================================================================== [ 112.090447][ T826] BUG: KMSAN: uninit-value in smsc75xx_bind+0x541/0x12d0 [ 112.097466][ T826] CPU: 0 PID: 826 Comm: kworker/0:2 Not tainted 5.2.0+ #15 [ 112.104644][ T826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.114716][ T826] Workqueue: usb_hub_wq hub_event [ 112.119731][ T826] Call Trace: [ 112.123018][ T826] dump_stack+0x191/0x1f0 [ 112.127346][ T826] kmsan_report+0x162/0x2d0 [ 112.131846][ T826] __msan_warning+0x75/0xe0 [ 112.136348][ T826] smsc75xx_bind+0x541/0x12d0 [ 112.141041][ T826] ? smsc75xx_write_wuff+0x9e0/0x9e0 [ 112.146314][ T826] usbnet_probe+0x10d3/0x3950 [ 112.151001][ T826] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 112.157082][ T826] ? usbnet_disconnect+0x660/0x660 [ 112.162187][ T826] usb_probe_interface+0xd19/0x1310 [ 112.167388][ T826] ? usb_register_driver+0x7d0/0x7d0 [ 112.172665][ T826] really_probe+0x1344/0x1d90 [ 112.177362][ T826] driver_probe_device+0x1ba/0x510 [ 112.182490][ T826] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.188391][ T826] __device_attach_driver+0x5b8/0x790 [ 112.193775][ T826] bus_for_each_drv+0x28e/0x3b0 [ 112.198617][ T826] ? deferred_probe_work_func+0x400/0x400 [ 112.204331][ T826] __device_attach+0x489/0x750 [ 112.209096][ T826] device_initial_probe+0x4a/0x60 [ 112.214216][ T826] bus_probe_device+0x131/0x390 [ 112.219073][ T826] device_add+0x25b5/0x2df0 [ 112.223596][ T826] usb_set_configuration+0x309f/0x3710 [ 112.229089][ T826] generic_probe+0xe7/0x280 [ 112.233595][ T826] ? usb_choose_configuration+0xae0/0xae0 [ 112.247218][ T826] usb_probe_device+0x146/0x200 [ 112.252768][ T826] ? usb_register_device_driver+0x470/0x470 [ 112.258669][ T826] really_probe+0x1344/0x1d90 [ 112.263347][ T826] driver_probe_device+0x1ba/0x510 [ 112.268452][ T826] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.274374][ T826] __device_attach_driver+0x5b8/0x790 [ 112.279876][ T826] bus_for_each_drv+0x28e/0x3b0 [ 112.284719][ T826] ? deferred_probe_work_func+0x400/0x400 [ 112.291055][ T826] __device_attach+0x489/0x750 [ 112.295834][ T826] device_initial_probe+0x4a/0x60 [ 112.300849][ T826] bus_probe_device+0x131/0x390 [ 112.305712][ T826] device_add+0x25b5/0x2df0 [ 112.310236][ T826] usb_new_device+0x23e5/0x2fb0 [ 112.315103][ T826] hub_event+0x5853/0x7320 [ 112.319568][ T826] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.325459][ T826] ? led_work+0x720/0x720 [ 112.329775][ T826] ? led_work+0x720/0x720 [ 112.334101][ T826] process_one_work+0x1572/0x1f00 [ 112.339140][ T826] worker_thread+0x111b/0x2460 [ 112.344007][ T826] kthread+0x4b5/0x4f0 [ 112.348060][ T826] ? process_one_work+0x1f00/0x1f00 [ 112.353286][ T826] ? kthread_blkcg+0xf0/0xf0 [ 112.357865][ T826] ret_from_fork+0x35/0x40 [ 112.362288][ T826] [ 112.364598][ T826] Local variable description: ----buf.i93@smsc75xx_bind [ 112.371506][ T826] Variable was created at: [ 112.375998][ T826] smsc75xx_bind+0x44c/0x12d0 [ 112.380661][ T826] usbnet_probe+0x10d3/0x3950 [ 112.385314][ T826] ================================================================== [ 112.393354][ T826] Disabling lock debugging due to kernel taint [ 112.399508][ T826] Kernel panic - not syncing: panic_on_warn set ... [ 112.406082][ T826] CPU: 0 PID: 826 Comm: kworker/0:2 Tainted: G B 5.2.0+ #15 [ 112.414645][ T826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.424710][ T826] Workqueue: usb_hub_wq hub_event [ 112.429720][ T826] Call Trace: [ 112.433012][ T826] dump_stack+0x191/0x1f0 [ 112.437343][ T826] panic+0x3c9/0xc1e [ 112.441263][ T826] kmsan_report+0x2ca/0x2d0 [ 112.445771][ T826] __msan_warning+0x75/0xe0 [ 112.450273][ T826] smsc75xx_bind+0x541/0x12d0 [ 112.454964][ T826] ? smsc75xx_write_wuff+0x9e0/0x9e0 [ 112.460265][ T826] usbnet_probe+0x10d3/0x3950 [ 112.464934][ T826] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 112.471011][ T826] ? usbnet_disconnect+0x660/0x660 [ 112.476117][ T826] usb_probe_interface+0xd19/0x1310 [ 112.481320][ T826] ? usb_register_driver+0x7d0/0x7d0 [ 112.486625][ T826] really_probe+0x1344/0x1d90 [ 112.491307][ T826] driver_probe_device+0x1ba/0x510 [ 112.496413][ T826] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.502299][ T826] __device_attach_driver+0x5b8/0x790 [ 112.507698][ T826] bus_for_each_drv+0x28e/0x3b0 [ 112.512546][ T826] ? deferred_probe_work_func+0x400/0x400 [ 112.518269][ T826] __device_attach+0x489/0x750 [ 112.523036][ T826] device_initial_probe+0x4a/0x60 [ 112.528062][ T826] bus_probe_device+0x131/0x390 [ 112.532907][ T826] device_add+0x25b5/0x2df0 [ 112.537422][ T826] usb_set_configuration+0x309f/0x3710 [ 112.542915][ T826] generic_probe+0xe7/0x280 [ 112.547405][ T826] ? usb_choose_configuration+0xae0/0xae0 [ 112.553130][ T826] usb_probe_device+0x146/0x200 [ 112.557974][ T826] ? usb_register_device_driver+0x470/0x470 [ 112.563871][ T826] really_probe+0x1344/0x1d90 [ 112.568554][ T826] driver_probe_device+0x1ba/0x510 [ 112.573660][ T826] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.579547][ T826] __device_attach_driver+0x5b8/0x790 [ 112.584920][ T826] bus_for_each_drv+0x28e/0x3b0 [ 112.589756][ T826] ? deferred_probe_work_func+0x400/0x400 [ 112.595492][ T826] __device_attach+0x489/0x750 [ 112.600283][ T826] device_initial_probe+0x4a/0x60 [ 112.605304][ T826] bus_probe_device+0x131/0x390 [ 112.610267][ T826] device_add+0x25b5/0x2df0 [ 112.614807][ T826] usb_new_device+0x23e5/0x2fb0 [ 112.619675][ T826] hub_event+0x5853/0x7320 [ 112.624140][ T826] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.630016][ T826] ? led_work+0x720/0x720 [ 112.634331][ T826] ? led_work+0x720/0x720 [ 112.638654][ T826] process_one_work+0x1572/0x1f00 [ 112.643687][ T826] worker_thread+0x111b/0x2460 [ 112.648469][ T826] kthread+0x4b5/0x4f0 [ 112.652547][ T826] ? process_one_work+0x1f00/0x1f00 [ 112.657840][ T826] ? kthread_blkcg+0xf0/0xf0 [ 112.662434][ T826] ret_from_fork+0x35/0x40 [ 112.667800][ T826] Kernel Offset: disabled [ 112.672131][ T826] Rebooting in 86400 seconds..