[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.348789][ T31] audit: type=1800 audit(1570253354.395:25): pid=11808 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.371798][ T31] audit: type=1800 audit(1570253354.425:26): pid=11808 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.406582][ T31] audit: type=1800 audit(1570253354.445:27): pid=11808 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 '10.128.10.51' (ECDSA) to the list of known hosts. syzkaller login: [ 88.666398][T11960] IPVS: ftp: loaded support on port[0] = 21 [ 88.744104][T11960] chnl_net:caif_netlink_parms(): no params data found [ 88.777345][T11960] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.784545][T11960] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.792771][T11960] device bridge_slave_0 entered promiscuous mode [ 88.800874][T11960] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.808134][T11960] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.816359][T11960] device bridge_slave_1 entered promiscuous mode [ 88.837126][T11960] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.848670][T11960] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.870749][T11960] team0: Port device team_slave_0 added [ 88.878337][T11960] team0: Port device team_slave_1 added [ 88.935271][T11960] device hsr_slave_0 entered promiscuous mode [ 88.982891][T11960] device hsr_slave_1 entered promiscuous mode [ 89.033670][T11960] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.040820][T11960] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.048535][T11960] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.055756][T11960] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.101573][T11960] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.116966][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.127735][ T30] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.136226][ T30] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.144936][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 89.159307][T11960] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.171639][ T2919] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.180724][ T2919] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.187945][ T2919] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.201532][T11962] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.210456][T11962] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.218790][T11962] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.239741][ T2919] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.250092][ T2919] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.264129][T11962] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.277374][ T2919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.290268][T11962] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 89.302091][T11960] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.326764][T11960] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.633057][ T2919] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 90.002629][ T2919] usb 1-1: config 0 has an invalid interface number: 78 but max is 0 [ 90.010891][ T2919] usb 1-1: config 0 has no interface number 0 [ 90.017185][ T2919] usb 1-1: New USB device found, idVendor=0b95, idProduct=172a, bcdDevice=9b.e9 [ 90.026328][ T2919] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.035740][ T2919] usb 1-1: config 0 descriptor?? [ 90.732806][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 [ 90.743372][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Error reading PHYID register: ffffffb9 [ 90.772686][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71 [ 90.783065][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Failed to send software reset: ffffffb9 [ 90.813580][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71 [ 90.824354][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Failed to enable software MII access [ 90.853120][ T2919] asix 1-1:0.78 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 [ 90.863308][ T2919] ===================================================== [ 90.870259][ T2919] BUG: KMSAN: uninit-value in asix_mdio_bus_read+0xbc/0xe0 [ 90.877459][ T2919] CPU: 0 PID: 2919 Comm: kworker/0:2 Not tainted 5.3.0-rc7+ #0 [ 90.884991][ T2919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.895037][ T2919] Workqueue: usb_hub_wq hub_event [ 90.900123][ T2919] Call Trace: [ 90.903395][ T2919] dump_stack+0x191/0x1f0 [ 90.907709][ T2919] kmsan_report+0x13a/0x2b0 [ 90.912204][ T2919] __msan_warning+0x73/0xe0 [ 90.916699][ T2919] asix_mdio_read+0x3e9/0x8f0 [ 90.921361][ T2919] asix_mdio_bus_read+0xbc/0xe0 [ 90.926228][ T2919] ? ax88172a_ioctl+0x180/0x180 [ 90.931071][ T2919] __mdiobus_read+0x106/0x3d0 [ 90.935730][ T2919] mdiobus_read+0xbd/0x110 [ 90.940126][ T2919] get_phy_device+0x331/0x8a0 [ 90.944789][ T2919] mdiobus_scan+0x91/0x760 [ 90.949186][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 90.955058][ T2919] __mdiobus_register+0x86d/0xca0 [ 90.960064][ T2919] ax88172a_bind+0xcc5/0xf80 [ 90.964638][ T2919] ? asix_set_mac_address+0x320/0x320 [ 90.969986][ T2919] usbnet_probe+0x10ae/0x3960 [ 90.974645][ T2919] ? kmsan_internal_set_origin+0x6a/0xb0 [ 90.980267][ T2919] ? usbnet_disconnect+0x660/0x660 [ 90.985367][ T2919] usb_probe_interface+0xd19/0x1310 [ 90.990635][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 90.996507][ T2919] ? usb_register_driver+0x7d0/0x7d0 [ 91.001772][ T2919] really_probe+0x1373/0x1dc0 [ 91.006434][ T2919] driver_probe_device+0x1ba/0x510 [ 91.011527][ T2919] __device_attach_driver+0x5b8/0x790 [ 91.016888][ T2919] bus_for_each_drv+0x28e/0x3b0 [ 91.021716][ T2919] ? deferred_probe_work_func+0x400/0x400 [ 91.027434][ T2919] __device_attach+0x489/0x750 [ 91.032186][ T2919] device_initial_probe+0x4a/0x60 [ 91.037199][ T2919] bus_probe_device+0x131/0x390 [ 91.042117][ T2919] device_add+0x25b5/0x2df0 [ 91.046615][ T2919] usb_set_configuration+0x309f/0x3710 [ 91.052065][ T2919] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 91.058120][ T2919] generic_probe+0xe7/0x280 [ 91.062603][ T2919] ? usb_choose_configuration+0xae0/0xae0 [ 91.068309][ T2919] usb_probe_device+0x146/0x200 [ 91.073139][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 91.079010][ T2919] ? usb_register_device_driver+0x470/0x470 [ 91.084886][ T2919] really_probe+0x1373/0x1dc0 [ 91.089549][ T2919] driver_probe_device+0x1ba/0x510 [ 91.094645][ T2919] __device_attach_driver+0x5b8/0x790 [ 91.100002][ T2919] bus_for_each_drv+0x28e/0x3b0 [ 91.104834][ T2919] ? deferred_probe_work_func+0x400/0x400 [ 91.110555][ T2919] __device_attach+0x489/0x750 [ 91.115305][ T2919] device_initial_probe+0x4a/0x60 [ 91.120309][ T2919] bus_probe_device+0x131/0x390 [ 91.125140][ T2919] device_add+0x25b5/0x2df0 [ 91.129635][ T2919] usb_new_device+0x23e5/0x2fb0 [ 91.134477][ T2919] hub_event+0x581d/0x72f0 [ 91.138899][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 91.144768][ T2919] ? led_work+0x720/0x720 [ 91.149074][ T2919] ? led_work+0x720/0x720 [ 91.153386][ T2919] process_one_work+0x1572/0x1ef0 [ 91.158403][ T2919] worker_thread+0x111b/0x2460 [ 91.163162][ T2919] kthread+0x4b5/0x4f0 [ 91.167219][ T2919] ? process_one_work+0x1ef0/0x1ef0 [ 91.172400][ T2919] ? kthread_blkcg+0xf0/0xf0 [ 91.176973][ T2919] ret_from_fork+0x35/0x40 [ 91.181372][ T2919] [ 91.183680][ T2919] Local variable description: ----smsr@asix_mdio_read [ 91.190414][ T2919] Variable was created at: [ 91.194808][ T2919] asix_mdio_read+0xa0/0x8f0 [ 91.199375][ T2919] asix_mdio_bus_read+0xbc/0xe0 [ 91.204196][ T2919] ===================================================== [ 91.211101][ T2919] Disabling lock debugging due to kernel taint [ 91.217228][ T2919] Kernel panic - not syncing: panic_on_warn set ... [ 91.223794][ T2919] CPU: 0 PID: 2919 Comm: kworker/0:2 Tainted: G B 5.3.0-rc7+ #0 [ 91.232699][ T2919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.242755][ T2919] Workqueue: usb_hub_wq hub_event [ 91.247764][ T2919] Call Trace: [ 91.251049][ T2919] dump_stack+0x191/0x1f0 [ 91.255371][ T2919] panic+0x3c9/0xc1e [ 91.259268][ T2919] kmsan_report+0x2a2/0x2b0 [ 91.263759][ T2919] __msan_warning+0x73/0xe0 [ 91.268246][ T2919] asix_mdio_read+0x3e9/0x8f0 [ 91.272914][ T2919] asix_mdio_bus_read+0xbc/0xe0 [ 91.277745][ T2919] ? ax88172a_ioctl+0x180/0x180 [ 91.282576][ T2919] __mdiobus_read+0x106/0x3d0 [ 91.287236][ T2919] mdiobus_read+0xbd/0x110 [ 91.291632][ T2919] get_phy_device+0x331/0x8a0 [ 91.296294][ T2919] mdiobus_scan+0x91/0x760 [ 91.300692][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 91.306564][ T2919] __mdiobus_register+0x86d/0xca0 [ 91.311572][ T2919] ax88172a_bind+0xcc5/0xf80 [ 91.316237][ T2919] ? asix_set_mac_address+0x320/0x320 [ 91.321588][ T2919] usbnet_probe+0x10ae/0x3960 [ 91.326271][ T2919] ? kmsan_internal_set_origin+0x6a/0xb0 [ 91.331907][ T2919] ? usbnet_disconnect+0x660/0x660 [ 91.337014][ T2919] usb_probe_interface+0xd19/0x1310 [ 91.342219][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 91.348104][ T2919] ? usb_register_driver+0x7d0/0x7d0 [ 91.353372][ T2919] really_probe+0x1373/0x1dc0 [ 91.358071][ T2919] driver_probe_device+0x1ba/0x510 [ 91.363170][ T2919] __device_attach_driver+0x5b8/0x790 [ 91.368526][ T2919] bus_for_each_drv+0x28e/0x3b0 [ 91.373357][ T2919] ? deferred_probe_work_func+0x400/0x400 [ 91.379073][ T2919] __device_attach+0x489/0x750 [ 91.383828][ T2919] device_initial_probe+0x4a/0x60 [ 91.388855][ T2919] bus_probe_device+0x131/0x390 [ 91.393688][ T2919] device_add+0x25b5/0x2df0 [ 91.398181][ T2919] usb_set_configuration+0x309f/0x3710 [ 91.403657][ T2919] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 91.409710][ T2919] generic_probe+0xe7/0x280 [ 91.414194][ T2919] ? usb_choose_configuration+0xae0/0xae0 [ 91.419896][ T2919] usb_probe_device+0x146/0x200 [ 91.424727][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 91.430603][ T2919] ? usb_register_device_driver+0x470/0x470 [ 91.436477][ T2919] really_probe+0x1373/0x1dc0 [ 91.441142][ T2919] driver_probe_device+0x1ba/0x510 [ 91.446241][ T2919] __device_attach_driver+0x5b8/0x790 [ 91.451601][ T2919] bus_for_each_drv+0x28e/0x3b0 [ 91.456430][ T2919] ? deferred_probe_work_func+0x400/0x400 [ 91.462131][ T2919] __device_attach+0x489/0x750 [ 91.466880][ T2919] device_initial_probe+0x4a/0x60 [ 91.471885][ T2919] bus_probe_device+0x131/0x390 [ 91.476720][ T2919] device_add+0x25b5/0x2df0 [ 91.481228][ T2919] usb_new_device+0x23e5/0x2fb0 [ 91.486072][ T2919] hub_event+0x581d/0x72f0 [ 91.490494][ T2919] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 91.496363][ T2919] ? led_work+0x720/0x720 [ 91.500671][ T2919] ? led_work+0x720/0x720 [ 91.504982][ T2919] process_one_work+0x1572/0x1ef0 [ 91.509995][ T2919] worker_thread+0x111b/0x2460 [ 91.514752][ T2919] kthread+0x4b5/0x4f0 [ 91.518797][ T2919] ? process_one_work+0x1ef0/0x1ef0 [ 91.523989][ T2919] ? kthread_blkcg+0xf0/0xf0 [ 91.528560][ T2919] ret_from_fork+0x35/0x40 [ 91.534252][ T2919] Kernel Offset: disabled [ 91.538590][ T2919] Rebooting in 86400 seconds..