[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 106.984302][ T31] audit: type=1800 audit(1561980774.037:25): pid=13015 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 107.009950][ T31] audit: type=1800 audit(1561980774.057:26): pid=13015 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 107.048960][ T31] audit: type=1800 audit(1561980774.087:27): pid=13015 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 '10.128.0.116' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 118.462213][ T30] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 118.702125][ T30] usb 1-1: Using ep0 maxpacket: 8 [ 118.822183][ T30] usb 1-1: config 0 has an invalid interface number: 152 but max is 0 [ 118.830483][ T30] usb 1-1: config 0 has no interface number 0 [ 118.836884][ T30] usb 1-1: New USB device found, idVendor=04bb, idProduct=0930, bcdDevice=d2.4a [ 118.846087][ T30] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 118.856213][ T30] usb 1-1: config 0 descriptor?? [ 119.092104][ T30] ================================================================== [ 119.100302][ T30] BUG: KMSAN: uninit-value in ax88178_bind+0x635/0xad0 [ 119.107273][ T30] CPU: 1 PID: 30 Comm: kworker/1:1 Not tainted 5.2.0-rc4+ #7 [ 119.114652][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.124779][ T30] Workqueue: usb_hub_wq hub_event [ 119.129815][ T30] Call Trace: [ 119.133143][ T30] dump_stack+0x191/0x1f0 [ 119.137530][ T30] kmsan_report+0x162/0x2d0 [ 119.142067][ T30] __msan_warning+0x75/0xe0 [ 119.146581][ T30] ax88178_bind+0x635/0xad0 [ 119.158268][ T30] ? asix_get_link+0x60/0x60 [ 119.162913][ T30] usbnet_probe+0x10d3/0x3950 [ 119.167625][ T30] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 119.173726][ T30] ? usbnet_disconnect+0x660/0x660 [ 119.178846][ T30] usb_probe_interface+0xd19/0x1310 [ 119.184067][ T30] ? usb_register_driver+0x7d0/0x7d0 [ 119.189380][ T30] really_probe+0x1344/0x1d90 [ 119.194075][ T30] driver_probe_device+0x1ba/0x510 [ 119.199193][ T30] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.205106][ T30] __device_attach_driver+0x5b8/0x790 [ 119.210521][ T30] bus_for_each_drv+0x28e/0x3b0 [ 119.215381][ T30] ? deferred_probe_work_func+0x400/0x400 [ 119.221116][ T30] __device_attach+0x489/0x750 [ 119.225926][ T30] device_initial_probe+0x4a/0x60 [ 119.230984][ T30] bus_probe_device+0x131/0x390 [ 119.235868][ T30] device_add+0x25b5/0x2df0 [ 119.240408][ T30] usb_set_configuration+0x309f/0x3710 [ 119.245918][ T30] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 119.252023][ T30] generic_probe+0xe7/0x280 [ 119.256547][ T30] ? usb_choose_configuration+0xae0/0xae0 [ 119.262272][ T30] usb_probe_device+0x146/0x200 [ 119.267127][ T30] ? usb_register_device_driver+0x470/0x470 [ 119.273027][ T30] really_probe+0x1344/0x1d90 [ 119.277727][ T30] driver_probe_device+0x1ba/0x510 [ 119.282870][ T30] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.288773][ T30] __device_attach_driver+0x5b8/0x790 [ 119.294164][ T30] bus_for_each_drv+0x28e/0x3b0 [ 119.299016][ T30] ? deferred_probe_work_func+0x400/0x400 [ 119.304752][ T30] __device_attach+0x489/0x750 [ 119.309540][ T30] device_initial_probe+0x4a/0x60 [ 119.314607][ T30] bus_probe_device+0x131/0x390 [ 119.319482][ T30] device_add+0x25b5/0x2df0 [ 119.324036][ T30] usb_new_device+0x23e5/0x2fb0 [ 119.328921][ T30] hub_event+0x5853/0x7320 [ 119.333402][ T30] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.339304][ T30] ? led_work+0x720/0x720 [ 119.343635][ T30] ? led_work+0x720/0x720 [ 119.347986][ T30] process_one_work+0x1572/0x1f00 [ 119.353038][ T30] worker_thread+0x111b/0x2460 [ 119.357857][ T30] kthread+0x4b5/0x4f0 [ 119.361944][ T30] ? process_one_work+0x1f00/0x1f00 [ 119.367159][ T30] ? kthread_blkcg+0xf0/0xf0 [ 119.371761][ T30] ret_from_fork+0x35/0x40 [ 119.376181][ T30] [ 119.378509][ T30] Local variable description: ----buf@ax88178_bind [ 119.385008][ T30] Variable was created at: [ 119.389450][ T30] ax88178_bind+0x60/0xad0 [ 119.396041][ T30] usbnet_probe+0x10d3/0x3950 [ 119.400710][ T30] ================================================================== [ 119.408769][ T30] Disabling lock debugging due to kernel taint [ 119.414936][ T30] Kernel panic - not syncing: panic_on_warn set ... [ 119.421551][ T30] CPU: 1 PID: 30 Comm: kworker/1:1 Tainted: G B 5.2.0-rc4+ #7 [ 119.430310][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.440381][ T30] Workqueue: usb_hub_wq hub_event [ 119.445492][ T30] Call Trace: [ 119.448810][ T30] dump_stack+0x191/0x1f0 [ 119.453167][ T30] panic+0x3c9/0xc1e [ 119.457088][ T30] kmsan_report+0x2ca/0x2d0 [ 119.461602][ T30] __msan_warning+0x75/0xe0 [ 119.466107][ T30] ax88178_bind+0x635/0xad0 [ 119.470610][ T30] ? asix_get_link+0x60/0x60 [ 119.475203][ T30] usbnet_probe+0x10d3/0x3950 [ 119.479887][ T30] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 119.485987][ T30] ? usbnet_disconnect+0x660/0x660 [ 119.491119][ T30] usb_probe_interface+0xd19/0x1310 [ 119.496332][ T30] ? usb_register_driver+0x7d0/0x7d0 [ 119.501617][ T30] really_probe+0x1344/0x1d90 [ 119.506325][ T30] driver_probe_device+0x1ba/0x510 [ 119.511486][ T30] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.517392][ T30] __device_attach_driver+0x5b8/0x790 [ 119.522789][ T30] bus_for_each_drv+0x28e/0x3b0 [ 119.527672][ T30] ? deferred_probe_work_func+0x400/0x400 [ 119.533430][ T30] __device_attach+0x489/0x750 [ 119.538251][ T30] device_initial_probe+0x4a/0x60 [ 119.543291][ T30] bus_probe_device+0x131/0x390 [ 119.548156][ T30] device_add+0x25b5/0x2df0 [ 119.552699][ T30] usb_set_configuration+0x309f/0x3710 [ 119.558202][ T30] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 119.564300][ T30] generic_probe+0xe7/0x280 [ 119.568817][ T30] ? usb_choose_configuration+0xae0/0xae0 [ 119.574549][ T30] usb_probe_device+0x146/0x200 [ 119.579413][ T30] ? usb_register_device_driver+0x470/0x470 [ 119.585340][ T30] really_probe+0x1344/0x1d90 [ 119.590051][ T30] driver_probe_device+0x1ba/0x510 [ 119.595185][ T30] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.601106][ T30] __device_attach_driver+0x5b8/0x790 [ 119.606507][ T30] bus_for_each_drv+0x28e/0x3b0 [ 119.611368][ T30] ? deferred_probe_work_func+0x400/0x400 [ 119.617116][ T30] __device_attach+0x489/0x750 [ 119.621938][ T30] device_initial_probe+0x4a/0x60 [ 119.626991][ T30] bus_probe_device+0x131/0x390 [ 119.631849][ T30] device_add+0x25b5/0x2df0 [ 119.636385][ T30] usb_new_device+0x23e5/0x2fb0 [ 119.641268][ T30] hub_event+0x5853/0x7320 [ 119.645751][ T30] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.651659][ T30] ? led_work+0x720/0x720 [ 119.655989][ T30] ? led_work+0x720/0x720 [ 119.660331][ T30] process_one_work+0x1572/0x1f00 [ 119.665390][ T30] worker_thread+0x111b/0x2460 [ 119.670188][ T30] kthread+0x4b5/0x4f0 [ 119.674264][ T30] ? process_one_work+0x1f00/0x1f00 [ 119.679494][ T30] ? kthread_blkcg+0xf0/0xf0 [ 119.684103][ T30] ret_from_fork+0x35/0x40 [ 119.689554][ T30] Kernel Offset: disabled [ 119.693919][ T30] Rebooting in 86400 seconds..