[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 80.610430][ T30] audit: type=1800 audit(1569654854.654:25): pid=12000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 80.633606][ T30] audit: type=1800 audit(1569654854.684:26): pid=12000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 80.668317][ T30] audit: type=1800 audit(1569654854.704:27): pid=12000 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 '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 93.991991][ T17] usb 1-1: new full-speed USB device number 2 using dummy_hcd [ 94.352199][ T17] usb 1-1: config 0 has an invalid interface number: 136 but max is 0 [ 94.360429][ T17] usb 1-1: config 0 has no interface number 0 [ 94.366670][ T17] usb 1-1: config 0 interface 136 altsetting 0 endpoint 0xE has invalid maxpacket 668, setting to 64 [ 94.377645][ T17] usb 1-1: config 0 interface 136 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 94.388376][ T17] usb 1-1: config 0 interface 136 altsetting 0 has a duplicate endpoint with address 0xF, skipping [ 94.552096][ T17] usb 1-1: New USB device found, idVendor=07a6, idProduct=8513, bcdDevice=fa.18 [ 94.561240][ T17] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 94.569361][ T17] usb 1-1: Product: syz [ 94.574513][ T17] usb 1-1: Manufacturer: syz [ 94.579119][ T17] usb 1-1: SerialNumber: syz [ 94.585232][ T17] usb 1-1: config 0 descriptor?? executing program [ 96.882117][ T17] (unnamed net_device) (uninitialized): read_eprom_word failed [ 96.889695][ T17] ===================================================== [ 96.896627][ T17] BUG: KMSAN: uninit-value in usb_probe_interface+0xd19/0x1310 [ 96.904183][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.0-rc7+ #0 [ 96.911599][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.921658][ T17] Workqueue: usb_hub_wq hub_event [ 96.926803][ T17] Call Trace: [ 96.930116][ T17] dump_stack+0x191/0x1f0 [ 96.934439][ T17] kmsan_report+0x13a/0x2b0 [ 96.938926][ T17] __msan_warning+0x73/0xe0 [ 96.943413][ T17] pegasus_probe+0x10b7/0x4be0 [ 96.948190][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 96.954079][ T17] ? kaweth_get_link+0x70/0x70 [ 96.958826][ T17] ? kaweth_get_link+0x70/0x70 [ 96.963625][ T17] usb_probe_interface+0xd19/0x1310 [ 96.968829][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 96.974712][ T17] ? usb_register_driver+0x7d0/0x7d0 [ 96.979985][ T17] really_probe+0x1373/0x1dc0 [ 96.984660][ T17] driver_probe_device+0x1ba/0x510 [ 96.989781][ T17] __device_attach_driver+0x5b8/0x790 [ 96.995148][ T17] bus_for_each_drv+0x28e/0x3b0 [ 96.999986][ T17] ? deferred_probe_work_func+0x400/0x400 [ 97.005795][ T17] __device_attach+0x489/0x750 [ 97.010550][ T17] device_initial_probe+0x4a/0x60 [ 97.015557][ T17] bus_probe_device+0x131/0x390 [ 97.020434][ T17] device_add+0x25b5/0x2df0 [ 97.024941][ T17] usb_set_configuration+0x309f/0x3710 [ 97.030424][ T17] generic_probe+0xe7/0x280 [ 97.034927][ T17] ? usb_choose_configuration+0xae0/0xae0 [ 97.040655][ T17] usb_probe_device+0x146/0x200 [ 97.045503][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 97.051402][ T17] ? usb_register_device_driver+0x470/0x470 [ 97.057353][ T17] really_probe+0x1373/0x1dc0 [ 97.062038][ T17] driver_probe_device+0x1ba/0x510 [ 97.068189][ T17] __device_attach_driver+0x5b8/0x790 [ 97.073609][ T17] bus_for_each_drv+0x28e/0x3b0 [ 97.078451][ T17] ? deferred_probe_work_func+0x400/0x400 [ 97.084159][ T17] __device_attach+0x489/0x750 [ 97.088913][ T17] device_initial_probe+0x4a/0x60 [ 97.093937][ T17] bus_probe_device+0x131/0x390 [ 97.098783][ T17] device_add+0x25b5/0x2df0 [ 97.103297][ T17] usb_new_device+0x23e5/0x2fb0 [ 97.108159][ T17] hub_event+0x581d/0x72f0 [ 97.112600][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 97.118479][ T17] ? led_work+0x720/0x720 [ 97.122788][ T17] ? led_work+0x720/0x720 [ 97.127106][ T17] process_one_work+0x1572/0x1ef0 [ 97.132125][ T17] worker_thread+0x111b/0x2460 [ 97.136886][ T17] kthread+0x4b5/0x4f0 [ 97.140938][ T17] ? process_one_work+0x1ef0/0x1ef0 [ 97.146122][ T17] ? kthread_blkcg+0xf0/0xf0 [ 97.150700][ T17] ret_from_fork+0x35/0x40 [ 97.155109][ T17] [ 97.157427][ T17] Local variable description: ----data.i@pegasus_probe [ 97.164258][ T17] Variable was created at: [ 97.168676][ T17] pegasus_probe+0xef3/0x4be0 [ 97.173346][ T17] usb_probe_interface+0xd19/0x1310 [ 97.178524][ T17] ===================================================== [ 97.185429][ T17] Disabling lock debugging due to kernel taint [ 97.191559][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 97.198129][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Tainted: G B 5.3.0-rc7+ #0 [ 97.206860][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.216906][ T17] Workqueue: usb_hub_wq hub_event [ 97.221909][ T17] Call Trace: [ 97.225205][ T17] dump_stack+0x191/0x1f0 [ 97.229571][ T17] panic+0x3c9/0xc1e [ 97.233468][ T17] kmsan_report+0x2a2/0x2b0 [ 97.237959][ T17] __msan_warning+0x73/0xe0 [ 97.242457][ T17] pegasus_probe+0x10b7/0x4be0 [ 97.247215][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 97.253178][ T17] ? kaweth_get_link+0x70/0x70 [ 97.257923][ T17] ? kaweth_get_link+0x70/0x70 [ 97.262672][ T17] usb_probe_interface+0xd19/0x1310 [ 97.267879][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 97.273850][ T17] ? usb_register_driver+0x7d0/0x7d0 [ 97.279127][ T17] really_probe+0x1373/0x1dc0 [ 97.283812][ T17] driver_probe_device+0x1ba/0x510 [ 97.288915][ T17] __device_attach_driver+0x5b8/0x790 [ 97.294280][ T17] bus_for_each_drv+0x28e/0x3b0 [ 97.299129][ T17] ? deferred_probe_work_func+0x400/0x400 [ 97.304842][ T17] __device_attach+0x489/0x750 [ 97.309598][ T17] device_initial_probe+0x4a/0x60 [ 97.314637][ T17] bus_probe_device+0x131/0x390 [ 97.319489][ T17] device_add+0x25b5/0x2df0 [ 97.324009][ T17] usb_set_configuration+0x309f/0x3710 [ 97.329499][ T17] generic_probe+0xe7/0x280 [ 97.333990][ T17] ? usb_choose_configuration+0xae0/0xae0 [ 97.339705][ T17] usb_probe_device+0x146/0x200 [ 97.344542][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 97.350717][ T17] ? usb_register_device_driver+0x470/0x470 [ 97.356594][ T17] really_probe+0x1373/0x1dc0 [ 97.361260][ T17] driver_probe_device+0x1ba/0x510 [ 97.366358][ T17] __device_attach_driver+0x5b8/0x790 [ 97.371729][ T17] bus_for_each_drv+0x28e/0x3b0 [ 97.376561][ T17] ? deferred_probe_work_func+0x400/0x400 [ 97.382264][ T17] __device_attach+0x489/0x750 [ 97.387045][ T17] device_initial_probe+0x4a/0x60 [ 97.392074][ T17] bus_probe_device+0x131/0x390 [ 97.396911][ T17] device_add+0x25b5/0x2df0 [ 97.401412][ T17] usb_new_device+0x23e5/0x2fb0 [ 97.406278][ T17] hub_event+0x581d/0x72f0 [ 97.410708][ T17] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 97.416594][ T17] ? led_work+0x720/0x720 [ 97.420902][ T17] ? led_work+0x720/0x720 [ 97.425216][ T17] process_one_work+0x1572/0x1ef0 [ 97.430242][ T17] worker_thread+0x111b/0x2460 [ 97.435052][ T17] kthread+0x4b5/0x4f0 [ 97.439113][ T17] ? process_one_work+0x1ef0/0x1ef0 [ 97.444298][ T17] ? kthread_blkcg+0xf0/0xf0 [ 97.448889][ T17] ret_from_fork+0x35/0x40 [ 97.454697][ T17] Kernel Offset: disabled [ 97.459025][ T17] Rebooting in 86400 seconds..