[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 82.372197][ T31] audit: type=1800 audit(1572234394.424:25): pid=11782 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 82.395947][ T31] audit: type=1800 audit(1572234394.454:26): pid=11782 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 82.517928][ T31] audit: type=1800 audit(1572234394.574:27): pid=11782 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 '10.128.0.251' (ECDSA) to the list of known hosts. syzkaller login: [ 92.318469][T11934] IPVS: ftp: loaded support on port[0] = 21 [ 92.399488][T11934] chnl_net:caif_netlink_parms(): no params data found [ 92.433881][T11934] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.441129][T11934] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.449613][T11934] device bridge_slave_0 entered promiscuous mode [ 92.457871][T11934] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.465187][T11934] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.473266][T11934] device bridge_slave_1 entered promiscuous mode [ 92.494890][T11934] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.506242][T11934] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.529212][T11934] team0: Port device team_slave_0 added [ 92.537028][T11934] team0: Port device team_slave_1 added [ 92.606439][T11934] device hsr_slave_0 entered promiscuous mode [ 92.644111][T11934] device hsr_slave_1 entered promiscuous mode [ 92.770169][T11934] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.777478][T11934] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.785305][T11934] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.792525][T11934] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.908546][T11934] 8021q: adding VLAN 0 to HW filter on device bond0 [ 92.955314][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 92.975740][ T2836] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.995062][ T2836] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.015490][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 93.053827][T11934] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.090726][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 93.100319][ T2836] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.107633][ T2836] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.191242][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 93.200698][ T2836] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.207990][ T2836] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.218504][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 93.228681][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 93.238379][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 93.271631][T11934] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 93.284434][T11934] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 93.377936][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 93.387433][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 93.405852][T11934] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 93.883804][ T30] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 94.244199][ T30] usb 1-1: config 1 interface 1 altsetting 1 endpoint 0x1 has an invalid bInterval 0, changing to 7 [ 94.256360][ T30] usb 1-1: config 1 interface 2 altsetting 1 endpoint 0x82 has an invalid bInterval 0, changing to 7 [ 94.433765][ T30] usb 1-1: New USB device found, idVendor=1d6b, idProduct=0101, bcdDevice= 0.40 [ 94.442864][ T30] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 94.451253][ T30] usb 1-1: Product: syz [ 94.455504][ T30] usb 1-1: Manufacturer: syz [ 94.460111][ T30] usb 1-1: SerialNumber: syz [ 94.804062][ T30] ===================================================== [ 94.811072][ T30] BUG: KMSAN: uninit-value in get_term_name+0x1b7/0xad0 [ 94.817993][ T30] CPU: 1 PID: 30 Comm: kworker/1:1 Not tainted 5.4.0-rc3+ #0 [ 94.826393][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.836454][ T30] Workqueue: usb_hub_wq hub_event [ 94.841459][ T30] Call Trace: [ 94.844744][ T30] dump_stack+0x191/0x1f0 [ 94.849075][ T30] kmsan_report+0x128/0x220 [ 94.853586][ T30] __msan_warning+0x73/0xe0 [ 94.858087][ T30] get_term_name+0x1b7/0xad0 [ 94.867561][ T30] __build_feature_ctl+0x11f1/0x29e0 [ 94.872928][ T30] ? parse_term_proc_unit+0x73d/0x7e0 [ 94.878318][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 94.884200][ T30] parse_audio_unit+0x2308/0x7490 [ 94.889232][ T30] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 94.895293][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 94.901181][ T30] snd_usb_create_mixer+0x1d7c/0x4070 [ 94.906544][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 94.912547][ T30] usb_audio_probe+0x286b/0x3eb0 [ 94.917498][ T30] ? snd_usb_autosuspend+0x110/0x110 [ 94.922781][ T30] usb_probe_interface+0xd19/0x1310 [ 94.928012][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 94.933982][ T30] ? usb_register_driver+0x860/0x860 [ 94.939259][ T30] really_probe+0xd91/0x1f90 [ 94.943863][ T30] driver_probe_device+0x1ba/0x510 [ 94.948959][ T30] __device_attach_driver+0x5b8/0x790 [ 94.954353][ T30] bus_for_each_drv+0x28e/0x3b0 [ 94.959204][ T30] ? deferred_probe_work_func+0x400/0x400 [ 94.964928][ T30] __device_attach+0x489/0x750 [ 94.969691][ T30] device_initial_probe+0x4a/0x60 [ 94.974695][ T30] bus_probe_device+0x131/0x390 [ 94.979542][ T30] device_add+0x25b5/0x2df0 [ 94.984056][ T30] usb_set_configuration+0x309f/0x3710 [ 94.989509][ T30] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 94.995588][ T30] generic_probe+0xe7/0x280 [ 95.000076][ T30] ? usb_choose_configuration+0xae0/0xae0 [ 95.005828][ T30] usb_probe_device+0x146/0x200 [ 95.011270][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.017163][ T30] ? usb_register_device_driver+0x500/0x500 [ 95.023073][ T30] really_probe+0xd91/0x1f90 [ 95.027658][ T30] driver_probe_device+0x1ba/0x510 [ 95.032756][ T30] __device_attach_driver+0x5b8/0x790 [ 95.038116][ T30] bus_for_each_drv+0x28e/0x3b0 [ 95.043177][ T30] ? deferred_probe_work_func+0x400/0x400 [ 95.048907][ T30] __device_attach+0x489/0x750 [ 95.054036][ T30] device_initial_probe+0x4a/0x60 [ 95.059085][ T30] bus_probe_device+0x131/0x390 [ 95.063938][ T30] device_add+0x25b5/0x2df0 [ 95.068442][ T30] usb_new_device+0x23e5/0x2fb0 [ 95.073299][ T30] hub_event+0x581d/0x72f0 [ 95.078772][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.084766][ T30] ? led_work+0x720/0x720 [ 95.089087][ T30] ? led_work+0x720/0x720 [ 95.093414][ T30] process_one_work+0x1572/0x1ef0 [ 95.098441][ T30] worker_thread+0x111b/0x2460 [ 95.103387][ T30] kthread+0x4b5/0x4f0 [ 95.107460][ T30] ? process_one_work+0x1ef0/0x1ef0 [ 95.112640][ T30] ? kthread_blkcg+0xf0/0xf0 [ 95.117247][ T30] ret_from_fork+0x35/0x40 [ 95.121661][ T30] [ 95.123972][ T30] Uninit was stored to memory at: [ 95.128979][ T30] kmsan_internal_chain_origin+0xbd/0x180 [ 95.134676][ T30] __msan_chain_origin+0x6b/0xd0 [ 95.139607][ T30] parse_term_proc_unit+0x73d/0x7e0 [ 95.144810][ T30] __check_input_term+0x13ef/0x2360 [ 95.149984][ T30] parse_audio_unit+0x1478/0x7490 [ 95.154987][ T30] snd_usb_create_mixer+0x1d7c/0x4070 [ 95.160337][ T30] usb_audio_probe+0x286b/0x3eb0 [ 95.165256][ T30] usb_probe_interface+0xd19/0x1310 [ 95.170450][ T30] really_probe+0xd91/0x1f90 [ 95.175029][ T30] driver_probe_device+0x1ba/0x510 [ 95.180116][ T30] __device_attach_driver+0x5b8/0x790 [ 95.185468][ T30] bus_for_each_drv+0x28e/0x3b0 [ 95.190330][ T30] __device_attach+0x489/0x750 [ 95.195079][ T30] device_initial_probe+0x4a/0x60 [ 95.200094][ T30] bus_probe_device+0x131/0x390 [ 95.205006][ T30] device_add+0x25b5/0x2df0 [ 95.209489][ T30] usb_set_configuration+0x309f/0x3710 [ 95.214925][ T30] generic_probe+0xe7/0x280 [ 95.219411][ T30] usb_probe_device+0x146/0x200 [ 95.224244][ T30] really_probe+0xd91/0x1f90 [ 95.228812][ T30] driver_probe_device+0x1ba/0x510 [ 95.234029][ T30] __device_attach_driver+0x5b8/0x790 [ 95.239400][ T30] bus_for_each_drv+0x28e/0x3b0 [ 95.244341][ T30] __device_attach+0x489/0x750 [ 95.249083][ T30] device_initial_probe+0x4a/0x60 [ 95.254168][ T30] bus_probe_device+0x131/0x390 [ 95.258992][ T30] device_add+0x25b5/0x2df0 [ 95.263482][ T30] usb_new_device+0x23e5/0x2fb0 [ 95.268318][ T30] hub_event+0x581d/0x72f0 [ 95.272715][ T30] process_one_work+0x1572/0x1ef0 [ 95.277833][ T30] worker_thread+0x111b/0x2460 [ 95.283195][ T30] kthread+0x4b5/0x4f0 [ 95.287278][ T30] ret_from_fork+0x35/0x40 [ 95.291681][ T30] [ 95.293986][ T30] Uninit was created at: [ 95.298230][ T30] kmsan_internal_poison_shadow+0x60/0x120 [ 95.304033][ T30] kmsan_slab_alloc+0xaa/0x120 [ 95.308789][ T30] __kmalloc+0x28e/0x430 [ 95.313008][ T30] usb_get_configuration+0x50d/0x76a0 [ 95.318358][ T30] usb_new_device+0x224/0x2fb0 [ 95.323241][ T30] hub_event+0x581d/0x72f0 [ 95.327740][ T30] process_one_work+0x1572/0x1ef0 [ 95.332838][ T30] worker_thread+0x111b/0x2460 [ 95.337582][ T30] kthread+0x4b5/0x4f0 [ 95.341657][ T30] ret_from_fork+0x35/0x40 [ 95.346067][ T30] ===================================================== [ 95.352980][ T30] Disabling lock debugging due to kernel taint [ 95.359121][ T30] Kernel panic - not syncing: panic_on_warn set ... [ 95.365698][ T30] CPU: 1 PID: 30 Comm: kworker/1:1 Tainted: G B 5.4.0-rc3+ #0 [ 95.374439][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.384498][ T30] Workqueue: usb_hub_wq hub_event [ 95.389499][ T30] Call Trace: [ 95.393222][ T30] dump_stack+0x191/0x1f0 [ 95.397973][ T30] panic+0x3c9/0xc1e [ 95.402135][ T30] kmsan_report+0x215/0x220 [ 95.406692][ T30] __msan_warning+0x73/0xe0 [ 95.411194][ T30] get_term_name+0x1b7/0xad0 [ 95.415797][ T30] __build_feature_ctl+0x11f1/0x29e0 [ 95.421522][ T30] ? parse_term_proc_unit+0x73d/0x7e0 [ 95.426894][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.432769][ T30] parse_audio_unit+0x2308/0x7490 [ 95.437797][ T30] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.443862][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.449775][ T30] snd_usb_create_mixer+0x1d7c/0x4070 [ 95.455149][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.461060][ T30] usb_audio_probe+0x286b/0x3eb0 [ 95.466070][ T30] ? snd_usb_autosuspend+0x110/0x110 [ 95.471445][ T30] usb_probe_interface+0xd19/0x1310 [ 95.476652][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.482543][ T30] ? usb_register_driver+0x860/0x860 [ 95.487826][ T30] really_probe+0xd91/0x1f90 [ 95.492424][ T30] driver_probe_device+0x1ba/0x510 [ 95.497622][ T30] __device_attach_driver+0x5b8/0x790 [ 95.502988][ T30] bus_for_each_drv+0x28e/0x3b0 [ 95.507827][ T30] ? deferred_probe_work_func+0x400/0x400 [ 95.513555][ T30] __device_attach+0x489/0x750 [ 95.519360][ T30] device_initial_probe+0x4a/0x60 [ 95.524486][ T30] bus_probe_device+0x131/0x390 [ 95.529359][ T30] device_add+0x25b5/0x2df0 [ 95.533986][ T30] usb_set_configuration+0x309f/0x3710 [ 95.539547][ T30] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 95.545623][ T30] generic_probe+0xe7/0x280 [ 95.550110][ T30] ? usb_choose_configuration+0xae0/0xae0 [ 95.556103][ T30] usb_probe_device+0x146/0x200 [ 95.560948][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.566849][ T30] ? usb_register_device_driver+0x500/0x500 [ 95.572837][ T30] really_probe+0xd91/0x1f90 [ 95.577419][ T30] driver_probe_device+0x1ba/0x510 [ 95.582529][ T30] __device_attach_driver+0x5b8/0x790 [ 95.587910][ T30] bus_for_each_drv+0x28e/0x3b0 [ 95.592750][ T30] ? deferred_probe_work_func+0x400/0x400 [ 95.598475][ T30] __device_attach+0x489/0x750 [ 95.603226][ T30] device_initial_probe+0x4a/0x60 [ 95.608236][ T30] bus_probe_device+0x131/0x390 [ 95.613071][ T30] device_add+0x25b5/0x2df0 [ 95.617568][ T30] usb_new_device+0x23e5/0x2fb0 [ 95.622410][ T30] hub_event+0x581d/0x72f0 [ 95.626852][ T30] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 95.632723][ T30] ? led_work+0x720/0x720 [ 95.637049][ T30] ? led_work+0x720/0x720 [ 95.641360][ T30] process_one_work+0x1572/0x1ef0 [ 95.646391][ T30] worker_thread+0x111b/0x2460 [ 95.651148][ T30] kthread+0x4b5/0x4f0 [ 95.655218][ T30] ? process_one_work+0x1ef0/0x1ef0 [ 95.660413][ T30] ? kthread_blkcg+0xf0/0xf0 [ 95.665014][ T30] ret_from_fork+0x35/0x40 [ 95.670952][ T30] Kernel Offset: disabled [ 95.675334][ T30] Rebooting in 86400 seconds..