[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.057502][ T30] audit: type=1800 audit(1565371112.100:25): pid=11740 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.080478][ T30] audit: type=1800 audit(1565371112.120:26): pid=11740 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.115289][ T30] audit: type=1800 audit(1565371112.150:27): pid=11740 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 '10.128.10.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 88.641825][ T2905] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 88.881901][ T2905] usb 1-1: Using ep0 maxpacket: 8 [ 89.001971][ T2905] usb 1-1: config 0 has an invalid interface number: 239 but max is 0 [ 89.010207][ T2905] usb 1-1: config 0 has no interface number 0 [ 89.016486][ T2905] usb 1-1: New USB device found, idVendor=0b95, idProduct=178a, bcdDevice=2b.fa [ 89.025601][ T2905] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 89.035039][ T2905] usb 1-1: config 0 descriptor?? executing program [ 89.283466][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 89.312197][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 89.561896][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 89.711928][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to read reg index 0x0006: -71 [ 89.742100][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0005: -71 [ 89.771947][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 89.801884][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 89.832142][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 89.864917][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 89.891872][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 89.921869][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 89.952077][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 89.982040][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to read reg index 0x0001: -71 [ 90.011909][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 90.042069][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x001f: -71 [ 90.071958][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x0019: -71 [ 90.102006][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x001f: -71 [ 90.131912][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000d: -71 [ 90.161874][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000e: -71 [ 90.191997][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000d: -71 [ 90.221878][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to read reg index 0x000e: -71 [ 90.251961][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000d: -71 [ 90.281877][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000e: -71 [ 90.311986][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000d: -71 [ 90.341897][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to write reg index 0x000e: -71 [ 90.372058][ T2905] ax88179_178a 1-1:0.239 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 [ 90.382951][ T2905] ================================================================== [ 90.391040][ T2905] BUG: KMSAN: uninit-value in mii_nway_restart+0x141/0x260 [ 90.398214][ T2905] CPU: 0 PID: 2905 Comm: kworker/0:2 Not tainted 5.3.0-rc3+ #17 [ 90.405813][ T2905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.415856][ T2905] Workqueue: usb_hub_wq hub_event [ 90.420873][ T2905] Call Trace: [ 90.424171][ T2905] dump_stack+0x191/0x1f0 [ 90.428493][ T2905] kmsan_report+0x162/0x2d0 [ 90.432977][ T2905] __msan_warning+0x75/0xe0 [ 90.437484][ T2905] mii_nway_restart+0x141/0x260 [ 90.442318][ T2905] ax88179_bind+0xee3/0x1a10 [ 90.446891][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.452851][ T2905] ? ax88179_resume+0x10f0/0x10f0 [ 90.457870][ T2905] usbnet_probe+0x10ae/0x3960 [ 90.462541][ T2905] ? usbnet_disconnect+0x660/0x660 [ 90.467631][ T2905] usb_probe_interface+0xd19/0x1310 [ 90.472824][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.478786][ T2905] ? usb_register_driver+0x7d0/0x7d0 [ 90.484067][ T2905] really_probe+0x1373/0x1dc0 [ 90.488740][ T2905] driver_probe_device+0x1ba/0x510 [ 90.493833][ T2905] __device_attach_driver+0x5b8/0x790 [ 90.499187][ T2905] ? bus_for_each_drv+0x1d5/0x3b0 [ 90.504209][ T2905] bus_for_each_drv+0x28e/0x3b0 [ 90.509053][ T2905] ? deferred_probe_work_func+0x400/0x400 [ 90.514753][ T2905] __device_attach+0x489/0x750 [ 90.519516][ T2905] device_initial_probe+0x4a/0x60 [ 90.524518][ T2905] bus_probe_device+0x131/0x390 [ 90.529347][ T2905] device_add+0x25b5/0x2df0 [ 90.533841][ T2905] ? usb_set_configuration+0x3036/0x3710 [ 90.539474][ T2905] usb_set_configuration+0x309f/0x3710 [ 90.544933][ T2905] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 90.550983][ T2905] generic_probe+0xe7/0x280 [ 90.555463][ T2905] ? usb_probe_device+0x104/0x200 [ 90.560462][ T2905] ? usb_choose_configuration+0xae0/0xae0 [ 90.566173][ T2905] usb_probe_device+0x146/0x200 [ 90.571002][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.576975][ T2905] ? usb_register_device_driver+0x470/0x470 [ 90.582857][ T2905] really_probe+0x1373/0x1dc0 [ 90.587519][ T2905] driver_probe_device+0x1ba/0x510 [ 90.592614][ T2905] __device_attach_driver+0x5b8/0x790 [ 90.597966][ T2905] ? bus_for_each_drv+0x1d5/0x3b0 [ 90.602969][ T2905] bus_for_each_drv+0x28e/0x3b0 [ 90.607796][ T2905] ? deferred_probe_work_func+0x400/0x400 [ 90.613497][ T2905] __device_attach+0x489/0x750 [ 90.618343][ T2905] device_initial_probe+0x4a/0x60 [ 90.623360][ T2905] bus_probe_device+0x131/0x390 [ 90.628192][ T2905] device_add+0x25b5/0x2df0 [ 90.632690][ T2905] usb_new_device+0x23e5/0x2fb0 [ 90.637528][ T2905] hub_event+0x581d/0x72f0 [ 90.641947][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.647903][ T2905] ? led_work+0x720/0x720 [ 90.652206][ T2905] ? led_work+0x720/0x720 [ 90.656511][ T2905] process_one_work+0x1572/0x1ef0 [ 90.661525][ T2905] worker_thread+0x111b/0x2460 [ 90.666279][ T2905] kthread+0x4b5/0x4f0 [ 90.670326][ T2905] ? process_one_work+0x1ef0/0x1ef0 [ 90.675503][ T2905] ? kthread_blkcg+0xf0/0xf0 [ 90.680070][ T2905] ret_from_fork+0x35/0x40 [ 90.684501][ T2905] [ 90.686807][ T2905] Local variable description: ----buf.i@ax88179_mdio_read [ 90.693886][ T2905] Variable was created at: [ 90.698293][ T2905] ax88179_mdio_read+0x7b/0x240 [ 90.703124][ T2905] mii_nway_restart+0xcf/0x260 [ 90.707871][ T2905] ================================================================== [ 90.715902][ T2905] Disabling lock debugging due to kernel taint [ 90.722027][ T2905] Kernel panic - not syncing: panic_on_warn set ... [ 90.728679][ T2905] CPU: 0 PID: 2905 Comm: kworker/0:2 Tainted: G B 5.3.0-rc3+ #17 [ 90.737669][ T2905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.747723][ T2905] Workqueue: usb_hub_wq hub_event [ 90.752718][ T2905] Call Trace: [ 90.755995][ T2905] dump_stack+0x191/0x1f0 [ 90.760309][ T2905] panic+0x3c9/0xc1e [ 90.764196][ T2905] kmsan_report+0x2ca/0x2d0 [ 90.768681][ T2905] __msan_warning+0x75/0xe0 [ 90.773166][ T2905] mii_nway_restart+0x141/0x260 [ 90.777994][ T2905] ax88179_bind+0xee3/0x1a10 [ 90.782566][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.788525][ T2905] ? ax88179_resume+0x10f0/0x10f0 [ 90.793526][ T2905] usbnet_probe+0x10ae/0x3960 [ 90.798390][ T2905] ? usbnet_disconnect+0x660/0x660 [ 90.803497][ T2905] usb_probe_interface+0xd19/0x1310 [ 90.808678][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.814634][ T2905] ? usb_register_driver+0x7d0/0x7d0 [ 90.819898][ T2905] really_probe+0x1373/0x1dc0 [ 90.824581][ T2905] driver_probe_device+0x1ba/0x510 [ 90.829691][ T2905] __device_attach_driver+0x5b8/0x790 [ 90.835044][ T2905] ? bus_for_each_drv+0x1d5/0x3b0 [ 90.840045][ T2905] bus_for_each_drv+0x28e/0x3b0 [ 90.844870][ T2905] ? deferred_probe_work_func+0x400/0x400 [ 90.850571][ T2905] __device_attach+0x489/0x750 [ 90.855317][ T2905] device_initial_probe+0x4a/0x60 [ 90.860318][ T2905] bus_probe_device+0x131/0x390 [ 90.865148][ T2905] device_add+0x25b5/0x2df0 [ 90.869652][ T2905] ? usb_set_configuration+0x3036/0x3710 [ 90.875265][ T2905] usb_set_configuration+0x309f/0x3710 [ 90.880727][ T2905] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 90.886780][ T2905] generic_probe+0xe7/0x280 [ 90.891262][ T2905] ? usb_probe_device+0x104/0x200 [ 90.896262][ T2905] ? usb_choose_configuration+0xae0/0xae0 [ 90.901964][ T2905] usb_probe_device+0x146/0x200 [ 90.906793][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.912752][ T2905] ? usb_register_device_driver+0x470/0x470 [ 90.918622][ T2905] really_probe+0x1373/0x1dc0 [ 90.923302][ T2905] driver_probe_device+0x1ba/0x510 [ 90.928414][ T2905] __device_attach_driver+0x5b8/0x790 [ 90.933767][ T2905] ? bus_for_each_drv+0x1d5/0x3b0 [ 90.938771][ T2905] bus_for_each_drv+0x28e/0x3b0 [ 90.943599][ T2905] ? deferred_probe_work_func+0x400/0x400 [ 90.949305][ T2905] __device_attach+0x489/0x750 [ 90.954052][ T2905] device_initial_probe+0x4a/0x60 [ 90.959073][ T2905] bus_probe_device+0x131/0x390 [ 90.963948][ T2905] device_add+0x25b5/0x2df0 [ 90.968442][ T2905] usb_new_device+0x23e5/0x2fb0 [ 90.973299][ T2905] hub_event+0x581d/0x72f0 [ 90.977721][ T2905] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 90.983683][ T2905] ? led_work+0x720/0x720 [ 90.987996][ T2905] ? led_work+0x720/0x720 [ 90.992303][ T2905] process_one_work+0x1572/0x1ef0 [ 90.997316][ T2905] worker_thread+0x111b/0x2460 [ 91.002068][ T2905] kthread+0x4b5/0x4f0 [ 91.006161][ T2905] ? process_one_work+0x1ef0/0x1ef0 [ 91.011350][ T2905] ? kthread_blkcg+0xf0/0xf0 [ 91.015931][ T2905] ret_from_fork+0x35/0x40 [ 91.021788][ T2905] Kernel Offset: disabled [ 91.026109][ T2905] Rebooting in 86400 seconds..