[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 84.620708][ T32] audit: type=1800 audit(1570908454.668:25): pid=12074 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 84.652019][ T32] audit: type=1800 audit(1570908454.698:26): pid=12074 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 84.672191][ T32] audit: type=1800 audit(1570908454.708:27): pid=12074 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 '10.128.0.65' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 96.132022][ T3632] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 96.492257][ T3632] usb 1-1: config 0 has an invalid interface number: 78 but max is 0 [ 96.500402][ T3632] usb 1-1: config 0 has no interface number 0 [ 96.506723][ T3632] usb 1-1: New USB device found, idVendor=0b95, idProduct=172a, bcdDevice=9b.e9 [ 96.515903][ T3632] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 96.525511][ T3632] usb 1-1: config 0 descriptor?? [ 97.002166][ T3632] ===================================================== [ 97.009172][ T3632] BUG: KMSAN: uninit-value in ax88172a_bind+0x76d/0xf80 [ 97.016086][ T3632] CPU: 1 PID: 3632 Comm: kworker/1:2 Not tainted 5.4.0-rc2+ #0 [ 97.023700][ T3632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.033917][ T3632] Workqueue: usb_hub_wq hub_event [ 97.038940][ T3632] Call Trace: [ 97.042212][ T3632] dump_stack+0x191/0x1f0 [ 97.046542][ T3632] kmsan_report+0x14e/0x2c0 [ 97.051041][ T3632] __msan_warning+0x73/0xe0 [ 97.055541][ T3632] ax88172a_bind+0x76d/0xf80 [ 97.060163][ T3632] ? kmsan_memcpy_memmove_metadata+0x109/0x2e0 [ 97.066325][ T3632] ? asix_set_mac_address+0x320/0x320 [ 97.071684][ T3632] usbnet_probe+0x10d3/0x39d0 [ 97.076354][ T3632] ? kmsan_get_metadata+0x39/0x350 [ 97.081461][ T3632] ? kmsan_internal_set_origin+0x6a/0xb0 [ 97.087099][ T3632] ? usbnet_disconnect+0x660/0x660 [ 97.092189][ T3632] usb_probe_interface+0xd19/0x1310 [ 97.097371][ T3632] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 97.103253][ T3632] ? usb_register_driver+0x860/0x860 [ 97.109560][ T3632] really_probe+0xd91/0x1f90 [ 97.114132][ T3632] driver_probe_device+0x1ba/0x510 [ 97.119224][ T3632] __device_attach_driver+0x5b8/0x790 [ 97.124595][ T3632] bus_for_each_drv+0x28e/0x3b0 [ 97.129438][ T3632] ? deferred_probe_work_func+0x400/0x400 [ 97.135159][ T3632] __device_attach+0x489/0x750 [ 97.140040][ T3632] device_initial_probe+0x4a/0x60 [ 97.145067][ T3632] bus_probe_device+0x131/0x390 [ 97.149906][ T3632] device_add+0x25b5/0x2df0 [ 97.154405][ T3632] usb_set_configuration+0x309f/0x3710 [ 97.159859][ T3632] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 97.165913][ T3632] generic_probe+0xe7/0x280 [ 97.170420][ T3632] ? usb_choose_configuration+0xae0/0xae0 [ 97.176131][ T3632] usb_probe_device+0x146/0x200 [ 97.180960][ T3632] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 97.186835][ T3632] ? usb_register_device_driver+0x500/0x500 [ 97.192707][ T3632] really_probe+0xd91/0x1f90 [ 97.197300][ T3632] driver_probe_device+0x1ba/0x510 [ 97.202768][ T3632] __device_attach_driver+0x5b8/0x790 [ 97.208134][ T3632] bus_for_each_drv+0x28e/0x3b0 [ 97.212985][ T3632] ? deferred_probe_work_func+0x400/0x400 [ 97.218693][ T3632] __device_attach+0x489/0x750 [ 97.223442][ T3632] device_initial_probe+0x4a/0x60 [ 97.228458][ T3632] bus_probe_device+0x131/0x390 [ 97.233302][ T3632] device_add+0x25b5/0x2df0 [ 97.237797][ T3632] usb_new_device+0x23e5/0x2fb0 [ 97.242659][ T3632] hub_event+0x581d/0x72f0 [ 97.247169][ T3632] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 97.253049][ T3632] ? led_work+0x720/0x720 [ 97.257355][ T3632] ? led_work+0x720/0x720 [ 97.261681][ T3632] process_one_work+0x1572/0x1ef0 [ 97.266698][ T3632] worker_thread+0x111b/0x2460 [ 97.271465][ T3632] kthread+0x4b5/0x4f0 [ 97.275526][ T3632] ? process_one_work+0x1ef0/0x1ef0 [ 97.280716][ T3632] ? kthread_blkcg+0xf0/0xf0 [ 97.285310][ T3632] ret_from_fork+0x35/0x40 [ 97.289710][ T3632] [ 97.292102][ T3632] Local variable description: ----buf@ax88172a_bind [ 97.298656][ T3632] Variable was created at: [ 97.303069][ T3632] ax88172a_bind+0x66/0xf80 [ 97.307559][ T3632] ax88172a_bind+0x66/0xf80 [ 97.312046][ T3632] ===================================================== [ 97.318951][ T3632] Disabling lock debugging due to kernel taint [ 97.325087][ T3632] Kernel panic - not syncing: panic_on_warn set ... [ 97.331663][ T3632] CPU: 1 PID: 3632 Comm: kworker/1:2 Tainted: G B 5.4.0-rc2+ #0 [ 97.340578][ T3632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.350634][ T3632] Workqueue: usb_hub_wq hub_event [ 97.355641][ T3632] Call Trace: [ 97.358925][ T3632] dump_stack+0x191/0x1f0 [ 97.363294][ T3632] panic+0x3c9/0xc1e [ 97.367257][ T3632] kmsan_report+0x2b6/0x2c0 [ 97.371750][ T3632] __msan_warning+0x73/0xe0 [ 97.376235][ T3632] ax88172a_bind+0x76d/0xf80 [ 97.380803][ T3632] ? kmsan_memcpy_memmove_metadata+0x109/0x2e0 [ 97.386940][ T3632] ? asix_set_mac_address+0x320/0x320 [ 97.392296][ T3632] usbnet_probe+0x10d3/0x39d0 [ 97.396951][ T3632] ? kmsan_get_metadata+0x39/0x350 [ 97.402067][ T3632] ? kmsan_internal_set_origin+0x6a/0xb0 [ 97.407690][ T3632] ? usbnet_disconnect+0x660/0x660 [ 97.412781][ T3632] usb_probe_interface+0xd19/0x1310 [ 97.417963][ T3632] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 97.423834][ T3632] ? usb_register_driver+0x860/0x860 [ 97.429110][ T3632] really_probe+0xd91/0x1f90 [ 97.433697][ T3632] driver_probe_device+0x1ba/0x510 [ 97.438794][ T3632] __device_attach_driver+0x5b8/0x790 [ 97.444150][ T3632] bus_for_each_drv+0x28e/0x3b0 [ 97.448979][ T3632] ? deferred_probe_work_func+0x400/0x400 [ 97.454688][ T3632] __device_attach+0x489/0x750 [ 97.459462][ T3632] device_initial_probe+0x4a/0x60 [ 97.464465][ T3632] bus_probe_device+0x131/0x390 [ 97.469310][ T3632] device_add+0x25b5/0x2df0 [ 97.473816][ T3632] usb_set_configuration+0x309f/0x3710 [ 97.479267][ T3632] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 97.485318][ T3632] generic_probe+0xe7/0x280 [ 97.489811][ T3632] ? usb_choose_configuration+0xae0/0xae0 [ 97.495524][ T3632] usb_probe_device+0x146/0x200 [ 97.500366][ T3632] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 97.506242][ T3632] ? usb_register_device_driver+0x500/0x500 [ 97.512132][ T3632] really_probe+0xd91/0x1f90 [ 97.516726][ T3632] driver_probe_device+0x1ba/0x510 [ 97.521847][ T3632] __device_attach_driver+0x5b8/0x790 [ 97.527208][ T3632] bus_for_each_drv+0x28e/0x3b0 [ 97.532050][ T3632] ? deferred_probe_work_func+0x400/0x400 [ 97.537764][ T3632] __device_attach+0x489/0x750 [ 97.542532][ T3632] device_initial_probe+0x4a/0x60 [ 97.547574][ T3632] bus_probe_device+0x131/0x390 [ 97.552429][ T3632] device_add+0x25b5/0x2df0 [ 97.556926][ T3632] usb_new_device+0x23e5/0x2fb0 [ 97.561776][ T3632] hub_event+0x581d/0x72f0 [ 97.566210][ T3632] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 97.572093][ T3632] ? led_work+0x720/0x720 [ 97.576411][ T3632] ? led_work+0x720/0x720 [ 97.580720][ T3632] process_one_work+0x1572/0x1ef0 [ 97.585745][ T3632] worker_thread+0x111b/0x2460 [ 97.590500][ T3632] kthread+0x4b5/0x4f0 [ 97.594571][ T3632] ? process_one_work+0x1ef0/0x1ef0 [ 97.599749][ T3632] ? kthread_blkcg+0xf0/0xf0 [ 97.604318][ T3632] ret_from_fork+0x35/0x40 [ 97.610162][ T3632] Kernel Offset: disabled [ 97.614489][ T3632] Rebooting in 86400 seconds..