[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 83.330929][ T31] audit: type=1800 audit(1571831057.382:25): pid=11837 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.363882][ T31] audit: type=1800 audit(1571831057.412:26): pid=11837 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.384220][ T31] audit: type=1800 audit(1571831057.412:27): pid=11837 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 '10.128.0.217' (ECDSA) to the list of known hosts. syzkaller login: [ 96.467604][T11989] IPVS: ftp: loaded support on port[0] = 21 [ 96.545415][T11989] chnl_net:caif_netlink_parms(): no params data found [ 96.582437][T11989] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.589655][T11989] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.597973][T11989] device bridge_slave_0 entered promiscuous mode [ 96.606147][T11989] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.613240][T11989] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.621628][T11989] device bridge_slave_1 entered promiscuous mode [ 96.642915][T11989] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.654790][T11989] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 96.677163][T11989] team0: Port device team_slave_0 added [ 96.685400][T11989] team0: Port device team_slave_1 added [ 96.746730][T11989] device hsr_slave_0 entered promiscuous mode [ 96.794439][T11989] device hsr_slave_1 entered promiscuous mode [ 96.845475][T11989] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.852635][T11989] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.860371][T11989] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.867620][T11989] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.915869][T11989] 8021q: adding VLAN 0 to HW filter on device bond0 [ 96.934617][T11989] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.941765][ T3381] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 96.951952][ T3381] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.961734][ T3381] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.970884][ T3381] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 96.994835][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 97.003477][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.010718][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.018691][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 97.027631][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.034871][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.055935][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 97.065131][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 97.079077][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 97.096424][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 97.105427][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 97.118299][T11989] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 97.141430][T11989] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 97.464498][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 97.703806][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 97.824073][ T12] usb 1-1: config 0 has an invalid interface number: 123 but max is 0 [ 97.832310][ T12] usb 1-1: config 0 has no interface number 0 [ 97.838569][ T12] usb 1-1: New USB device found, idVendor=06a2, idProduct=6810, bcdDevice=f0.d8 [ 97.847699][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 97.858042][ T12] usb 1-1: config 0 descriptor?? [ 98.134592][ T12] usb 1-1: string descriptor 0 read error: -71 [ 98.145324][ T12] gspca_main: gspca_topro-2.14.0 probing 06a2:6810 [ 98.163947][ T12] gspca_topro: reg_w err -71 [ 98.233681][ T12] ===================================================== [ 98.240652][ T12] BUG: KMSAN: uninit-value in i2c_w+0xb7a/0xd70 [ 98.246888][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc3+ #0 [ 98.254241][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.264299][ T12] Workqueue: usb_hub_wq hub_event [ 98.269308][ T12] Call Trace: [ 98.272584][ T12] dump_stack+0x191/0x1f0 [ 98.276900][ T12] kmsan_report+0x14a/0x2f0 [ 98.281389][ T12] __msan_warning+0x73/0xf0 [ 98.285890][ T12] i2c_w+0xb7a/0xd70 [ 98.289769][ T12] sd_init+0xc10/0x7c10 [ 98.293909][ T12] ? sd_config+0x260/0x260 [ 98.298313][ T12] gspca_dev_probe2+0xe93/0x2230 [ 98.303243][ T12] gspca_dev_probe+0x346/0x3b0 [ 98.307990][ T12] sd_probe+0x8d/0xa0 [ 98.311964][ T12] ? sd_s_ctrl+0x2590/0x2590 [ 98.316568][ T12] usb_probe_interface+0xd19/0x1310 [ 98.321751][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 98.327624][ T12] ? usb_register_driver+0x860/0x860 [ 98.332903][ T12] really_probe+0xd91/0x1f90 [ 98.337480][ T12] driver_probe_device+0x1ba/0x510 [ 98.342575][ T12] __device_attach_driver+0x5b8/0x790 [ 98.347945][ T12] bus_for_each_drv+0x28e/0x3b0 [ 98.352775][ T12] ? deferred_probe_work_func+0x400/0x400 [ 98.358498][ T12] __device_attach+0x489/0x750 [ 98.363867][ T12] device_initial_probe+0x4a/0x60 [ 98.368891][ T12] bus_probe_device+0x131/0x390 [ 98.373724][ T12] device_add+0x25b5/0x2df0 [ 98.378236][ T12] usb_set_configuration+0x309f/0x3710 [ 98.383686][ T12] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 98.389750][ T12] generic_probe+0xe7/0x280 [ 98.394234][ T12] ? usb_choose_configuration+0xae0/0xae0 [ 98.399935][ T12] usb_probe_device+0x146/0x200 [ 98.404766][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 98.410814][ T12] ? usb_register_device_driver+0x500/0x500 [ 98.416710][ T12] really_probe+0xd91/0x1f90 [ 98.421290][ T12] driver_probe_device+0x1ba/0x510 [ 98.426387][ T12] __device_attach_driver+0x5b8/0x790 [ 98.431757][ T12] bus_for_each_drv+0x28e/0x3b0 [ 98.436585][ T12] ? deferred_probe_work_func+0x400/0x400 [ 98.442315][ T12] __device_attach+0x489/0x750 [ 98.447065][ T12] device_initial_probe+0x4a/0x60 [ 98.452096][ T12] bus_probe_device+0x131/0x390 [ 98.456942][ T12] device_add+0x25b5/0x2df0 [ 98.461454][ T12] usb_new_device+0x23e5/0x2fb0 [ 98.466326][ T12] hub_event+0x581d/0x72f0 [ 98.470751][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 98.476653][ T12] ? led_work+0x720/0x720 [ 98.480973][ T12] ? led_work+0x720/0x720 [ 98.485293][ T12] process_one_work+0x1572/0x1ef0 [ 98.490315][ T12] worker_thread+0x111b/0x2460 [ 98.495083][ T12] kthread+0x4b5/0x4f0 [ 98.499134][ T12] ? process_one_work+0x1ef0/0x1ef0 [ 98.504317][ T12] ? kthread_blkcg+0xf0/0xf0 [ 98.508891][ T12] ret_from_fork+0x35/0x40 [ 98.513305][ T12] [ 98.515614][ T12] Uninit was created at: [ 98.519837][ T12] kmsan_internal_poison_shadow+0x60/0x110 [ 98.525620][ T12] kmsan_slab_alloc+0xaa/0x130 [ 98.530358][ T12] kmem_cache_alloc_trace+0x8c5/0xd20 [ 98.535706][ T12] gspca_dev_probe2+0x30d/0x2230 [ 98.540619][ T12] gspca_dev_probe+0x346/0x3b0 [ 98.545371][ T12] sd_probe+0x8d/0xa0 [ 98.549342][ T12] usb_probe_interface+0xd19/0x1310 [ 98.554517][ T12] really_probe+0xd91/0x1f90 [ 98.559086][ T12] driver_probe_device+0x1ba/0x510 [ 98.564174][ T12] __device_attach_driver+0x5b8/0x790 [ 98.569535][ T12] bus_for_each_drv+0x28e/0x3b0 [ 98.574361][ T12] __device_attach+0x489/0x750 [ 98.579109][ T12] device_initial_probe+0x4a/0x60 [ 98.584110][ T12] bus_probe_device+0x131/0x390 [ 98.588935][ T12] device_add+0x25b5/0x2df0 [ 98.593414][ T12] usb_set_configuration+0x309f/0x3710 [ 98.598852][ T12] generic_probe+0xe7/0x280 [ 98.603356][ T12] usb_probe_device+0x146/0x200 [ 98.608183][ T12] really_probe+0xd91/0x1f90 [ 98.612748][ T12] driver_probe_device+0x1ba/0x510 [ 98.617851][ T12] __device_attach_driver+0x5b8/0x790 [ 98.623201][ T12] bus_for_each_drv+0x28e/0x3b0 [ 98.628029][ T12] __device_attach+0x489/0x750 [ 98.632769][ T12] device_initial_probe+0x4a/0x60 [ 98.637769][ T12] bus_probe_device+0x131/0x390 [ 98.642594][ T12] device_add+0x25b5/0x2df0 [ 98.647084][ T12] usb_new_device+0x23e5/0x2fb0 [ 98.651923][ T12] hub_event+0x581d/0x72f0 [ 98.656332][ T12] process_one_work+0x1572/0x1ef0 [ 98.661337][ T12] worker_thread+0x111b/0x2460 [ 98.666173][ T12] kthread+0x4b5/0x4f0 [ 98.670228][ T12] ret_from_fork+0x35/0x40 [ 98.674620][ T12] ===================================================== [ 98.681529][ T12] Disabling lock debugging due to kernel taint [ 98.687661][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 98.694240][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.4.0-rc3+ #0 [ 98.702973][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.713015][ T12] Workqueue: usb_hub_wq hub_event [ 98.718017][ T12] Call Trace: [ 98.721294][ T12] dump_stack+0x191/0x1f0 [ 98.725607][ T12] panic+0x3c9/0xc1e [ 98.729499][ T12] kmsan_report+0x2e8/0x2f0 [ 98.733985][ T12] __msan_warning+0x73/0xf0 [ 98.738485][ T12] i2c_w+0xb7a/0xd70 [ 98.742366][ T12] sd_init+0xc10/0x7c10 [ 98.746711][ T12] ? sd_config+0x260/0x260 [ 98.751154][ T12] gspca_dev_probe2+0xe93/0x2230 [ 98.756141][ T12] gspca_dev_probe+0x346/0x3b0 [ 98.760906][ T12] sd_probe+0x8d/0xa0 [ 98.764984][ T12] ? sd_s_ctrl+0x2590/0x2590 [ 98.769569][ T12] usb_probe_interface+0xd19/0x1310 [ 98.774766][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 98.780650][ T12] ? usb_register_driver+0x860/0x860 [ 98.785924][ T12] really_probe+0xd91/0x1f90 [ 98.790507][ T12] driver_probe_device+0x1ba/0x510 [ 98.795607][ T12] __device_attach_driver+0x5b8/0x790 [ 98.801085][ T12] bus_for_each_drv+0x28e/0x3b0 [ 98.805922][ T12] ? deferred_probe_work_func+0x400/0x400 [ 98.811727][ T12] __device_attach+0x489/0x750 [ 98.816500][ T12] device_initial_probe+0x4a/0x60 [ 98.821522][ T12] bus_probe_device+0x131/0x390 [ 98.826371][ T12] device_add+0x25b5/0x2df0 [ 98.830868][ T12] usb_set_configuration+0x309f/0x3710 [ 98.836334][ T12] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 98.842419][ T12] generic_probe+0xe7/0x280 [ 98.846905][ T12] ? usb_choose_configuration+0xae0/0xae0 [ 98.852606][ T12] usb_probe_device+0x146/0x200 [ 98.857454][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 98.863339][ T12] ? usb_register_device_driver+0x500/0x500 [ 98.869214][ T12] really_probe+0xd91/0x1f90 [ 98.873797][ T12] driver_probe_device+0x1ba/0x510 [ 98.878890][ T12] __device_attach_driver+0x5b8/0x790 [ 98.884247][ T12] bus_for_each_drv+0x28e/0x3b0 [ 98.889076][ T12] ? deferred_probe_work_func+0x400/0x400 [ 98.894777][ T12] __device_attach+0x489/0x750 [ 98.899543][ T12] device_initial_probe+0x4a/0x60 [ 98.904549][ T12] bus_probe_device+0x131/0x390 [ 98.909384][ T12] device_add+0x25b5/0x2df0 [ 98.913900][ T12] usb_new_device+0x23e5/0x2fb0 [ 98.918761][ T12] hub_event+0x581d/0x72f0 [ 98.923191][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 98.929070][ T12] ? led_work+0x720/0x720 [ 98.933379][ T12] ? led_work+0x720/0x720 [ 98.937689][ T12] process_one_work+0x1572/0x1ef0 [ 98.942732][ T12] worker_thread+0x111b/0x2460 [ 98.947894][ T12] kthread+0x4b5/0x4f0 [ 98.951962][ T12] ? process_one_work+0x1ef0/0x1ef0 [ 98.957173][ T12] ? kthread_blkcg+0xf0/0xf0 [ 98.961764][ T12] ret_from_fork+0x35/0x40 [ 98.967607][ T12] Kernel Offset: disabled [ 98.971949][ T12] Rebooting in 86400 seconds..