[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 148.669528][ T3485] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 148.909815][ T3485] usb 1-1: Using ep0 maxpacket: 16 [ 149.040166][ T3485] usb 1-1: New USB device found, idVendor=2040, idProduct=9301, bcdDevice=76.1d [ 149.049621][ T3485] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 149.060343][ T3485] usb 1-1: config 0 descriptor?? [ 149.105895][ T3485] dvb-usb: found a 'Hauppauge WinTV-NOVA-T usb2' in warm state. [ 149.113781][ T3485] dvb-usb: bulk message failed: -22 (3/0) [ 149.141561][ T3485] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. [ 149.170237][ T3485] dvbdev: DVB: registering new adapter (Hauppauge WinTV-NOVA-T usb2) [ 149.178449][ T3485] usb 1-1: media controller created [ 149.184166][ T3485] dvb-usb: bulk message failed: -22 (5/0) [ 149.190338][ T3485] dvb-usb: bulk message failed: -22 (5/0) [ 149.196434][ T3485] dvb-usb: bulk message failed: -22 (5/0) [ 149.206703][ T3485] ===================================================== [ 149.206709][ T3485] BUG: KMSAN: uninit-value in mac_address_string+0x1040/0x1170 [ 149.206714][ T3485] CPU: 1 PID: 3485 Comm: kworker/1:2 Not tainted 5.10.0-rc4-syzkaller #0 [ 149.206719][ T3485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.206723][ T3485] Workqueue: usb_hub_wq hub_event [ 149.206730][ T3485] Call Trace: [ 149.206733][ T3485] dump_stack+0x21c/0x280 [ 149.206736][ T3485] kmsan_report+0xf7/0x1e0 [ 149.206739][ T3485] __msan_warning+0x5f/0xa0 [ 149.206742][ T3485] mac_address_string+0x1040/0x1170 [ 149.206745][ T3485] ? kmsan_get_metadata+0xda/0x180 [ 149.206749][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206752][ T3485] pointer+0x9fe/0x1ca0 [ 149.206755][ T3485] ? kmsan_get_metadata+0x116/0x180 [ 149.206758][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206761][ T3485] vsnprintf+0x1a4f/0x3610 [ 149.206764][ T3485] vscnprintf+0xbe/0x1c0 [ 149.206767][ T3485] vprintk_store+0xff/0x14a0 [ 149.206770][ T3485] ? kmsan_internal_set_origin+0x85/0xc0 [ 149.206773][ T3485] vprintk_emit+0x2ae/0x820 [ 149.206776][ T3485] ? __device_attach+0x538/0x860 [ 149.206779][ T3485] ? device_initial_probe+0x4a/0x60 [ 149.206782][ T3485] ? bus_probe_device+0x177/0x3d0 [ 149.206785][ T3485] vprintk_default+0x86/0xa0 [ 149.206788][ T3485] vprintk_func+0x2ed/0x2f0 [ 149.206790][ T3485] printk+0x180/0x1cd [ 149.206794][ T3485] ? dvb_usb_adapter_dvb_init+0x79f/0x1300 [ 149.206797][ T3485] dvb_usb_adapter_dvb_init+0x818/0x1300 [ 149.206800][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206804][ T3485] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 149.206807][ T3485] dvb_usb_device_init+0x27fd/0x3350 [ 149.206809][ T3485] nova_t_probe+0x73/0x80 [ 149.206812][ T3485] ? dibusb_mc_probe+0x80/0x80 [ 149.206815][ T3485] usb_probe_interface+0xfcc/0x1520 [ 149.206819][ T3485] ? usb_register_driver+0x900/0x900 [ 149.206821][ T3485] really_probe+0xebd/0x2420 [ 149.206824][ T3485] driver_probe_device+0x293/0x390 [ 149.206828][ T3485] __device_attach_driver+0x63f/0x830 [ 149.206831][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.206834][ T3485] ? state_synced_show+0x130/0x130 [ 149.206837][ T3485] __device_attach+0x538/0x860 [ 149.206840][ T3485] device_initial_probe+0x4a/0x60 [ 149.206843][ T3485] bus_probe_device+0x177/0x3d0 [ 149.206847][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206850][ T3485] device_add+0x399e/0x3f20 [ 149.206853][ T3485] usb_set_configuration+0x39cf/0x4010 [ 149.206856][ T3485] ? kmsan_get_metadata+0x116/0x180 [ 149.206860][ T3485] ? usb_set_configuration+0xa61/0x4010 [ 149.206864][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206870][ T3485] ? usb_choose_configuration+0xc72/0xf00 [ 149.206876][ T3485] usb_generic_driver_probe+0x138/0x300 [ 149.206882][ T3485] ? usb_choose_configuration+0xf00/0xf00 [ 149.206885][ T3485] usb_probe_device+0x317/0x570 [ 149.206889][ T3485] ? usb_register_device_driver+0x590/0x590 [ 149.206892][ T3485] really_probe+0xebd/0x2420 [ 149.206895][ T3485] driver_probe_device+0x293/0x390 [ 149.206899][ T3485] __device_attach_driver+0x63f/0x830 [ 149.206902][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.206905][ T3485] ? state_synced_show+0x130/0x130 [ 149.206908][ T3485] __device_attach+0x538/0x860 [ 149.206911][ T3485] device_initial_probe+0x4a/0x60 [ 149.206914][ T3485] bus_probe_device+0x177/0x3d0 [ 149.206917][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206920][ T3485] device_add+0x399e/0x3f20 [ 149.206923][ T3485] usb_new_device+0x1bd6/0x2a30 [ 149.206926][ T3485] hub_event+0x5bc9/0x8890 [ 149.206930][ T3485] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 149.206933][ T3485] ? kmsan_get_metadata+0x116/0x180 [ 149.206936][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.206939][ T3485] ? led_work+0x780/0x780 [ 149.206942][ T3485] process_one_work+0x121c/0x1fc0 [ 149.206945][ T3485] worker_thread+0x10cc/0x2740 [ 149.206948][ T3485] ? kmsan_get_metadata+0x116/0x180 [ 149.206951][ T3485] kthread+0x51c/0x560 [ 149.206954][ T3485] ? process_one_work+0x1fc0/0x1fc0 [ 149.206957][ T3485] ? kthread_blkcg+0x110/0x110 [ 149.206965][ T3485] ret_from_fork+0x1f/0x30 [ 149.206967][ T3485] [ 149.206970][ T3485] Uninit was stored to memory at: [ 149.206974][ T3485] kmsan_internal_chain_origin+0xad/0x130 [ 149.206977][ T3485] __msan_chain_origin+0x57/0xa0 [ 149.206980][ T3485] nova_t_read_mac_address+0x2d4/0x2f0 [ 149.206983][ T3485] dvb_usb_adapter_dvb_init+0x774/0x1300 [ 149.206987][ T3485] dvb_usb_device_init+0x27fd/0x3350 [ 149.206989][ T3485] nova_t_probe+0x73/0x80 [ 149.206993][ T3485] usb_probe_interface+0xfcc/0x1520 [ 149.206996][ T3485] really_probe+0xebd/0x2420 [ 149.206999][ T3485] driver_probe_device+0x293/0x390 [ 149.207002][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207005][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207008][ T3485] __device_attach+0x538/0x860 [ 149.207012][ T3485] device_initial_probe+0x4a/0x60 [ 149.207015][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207018][ T3485] device_add+0x399e/0x3f20 [ 149.207021][ T3485] usb_set_configuration+0x39cf/0x4010 [ 149.207025][ T3485] usb_generic_driver_probe+0x138/0x300 [ 149.207028][ T3485] usb_probe_device+0x317/0x570 [ 149.207031][ T3485] really_probe+0xebd/0x2420 [ 149.207034][ T3485] driver_probe_device+0x293/0x390 [ 149.207037][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207040][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207043][ T3485] __device_attach+0x538/0x860 [ 149.207046][ T3485] device_initial_probe+0x4a/0x60 [ 149.207049][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207052][ T3485] device_add+0x399e/0x3f20 [ 149.207055][ T3485] usb_new_device+0x1bd6/0x2a30 [ 149.207058][ T3485] hub_event+0x5bc9/0x8890 [ 149.207061][ T3485] process_one_work+0x121c/0x1fc0 [ 149.207064][ T3485] worker_thread+0x10cc/0x2740 [ 149.207066][ T3485] kthread+0x51c/0x560 [ 149.207069][ T3485] ret_from_fork+0x1f/0x30 [ 149.207071][ T3485] [ 149.207074][ T3485] Uninit was stored to memory at: [ 149.207078][ T3485] kmsan_internal_chain_origin+0xad/0x130 [ 149.207081][ T3485] __msan_chain_origin+0x57/0xa0 [ 149.207084][ T3485] dibusb_read_eeprom_byte+0x513/0x540 [ 149.207087][ T3485] nova_t_read_mac_address+0x1e3/0x2f0 [ 149.207090][ T3485] dvb_usb_adapter_dvb_init+0x774/0x1300 [ 149.207093][ T3485] dvb_usb_device_init+0x27fd/0x3350 [ 149.207096][ T3485] nova_t_probe+0x73/0x80 [ 149.207099][ T3485] usb_probe_interface+0xfcc/0x1520 [ 149.207102][ T3485] really_probe+0xebd/0x2420 [ 149.207105][ T3485] driver_probe_device+0x293/0x390 [ 149.207108][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207111][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207114][ T3485] __device_attach+0x538/0x860 [ 149.207117][ T3485] device_initial_probe+0x4a/0x60 [ 149.207120][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207123][ T3485] device_add+0x399e/0x3f20 [ 149.207126][ T3485] usb_set_configuration+0x39cf/0x4010 [ 149.207130][ T3485] usb_generic_driver_probe+0x138/0x300 [ 149.207133][ T3485] usb_probe_device+0x317/0x570 [ 149.207135][ T3485] really_probe+0xebd/0x2420 [ 149.207139][ T3485] driver_probe_device+0x293/0x390 [ 149.207142][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207145][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207148][ T3485] __device_attach+0x538/0x860 [ 149.207151][ T3485] device_initial_probe+0x4a/0x60 [ 149.207154][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207157][ T3485] device_add+0x399e/0x3f20 [ 149.207160][ T3485] usb_new_device+0x1bd6/0x2a30 [ 149.207163][ T3485] hub_event+0x5bc9/0x8890 [ 149.207166][ T3485] process_one_work+0x121c/0x1fc0 [ 149.207169][ T3485] worker_thread+0x10cc/0x2740 [ 149.207172][ T3485] kthread+0x51c/0x560 [ 149.207175][ T3485] ret_from_fork+0x1f/0x30 [ 149.207176][ T3485] [ 149.207179][ T3485] Uninit was created at: [ 149.207183][ T3485] kmsan_internal_poison_shadow+0x5c/0xf0 [ 149.207186][ T3485] kmsan_slab_alloc+0x8d/0xe0 [ 149.207189][ T3485] kmem_cache_alloc_trace+0x869/0x1020 [ 149.207192][ T3485] dibusb_read_eeprom_byte+0xad/0x540 [ 149.207196][ T3485] nova_t_read_mac_address+0x1e3/0x2f0 [ 149.207199][ T3485] dvb_usb_adapter_dvb_init+0x774/0x1300 [ 149.207202][ T3485] dvb_usb_device_init+0x27fd/0x3350 [ 149.207205][ T3485] nova_t_probe+0x73/0x80 [ 149.207208][ T3485] usb_probe_interface+0xfcc/0x1520 [ 149.207211][ T3485] really_probe+0xebd/0x2420 [ 149.207214][ T3485] driver_probe_device+0x293/0x390 [ 149.207217][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207220][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207223][ T3485] __device_attach+0x538/0x860 [ 149.207226][ T3485] device_initial_probe+0x4a/0x60 [ 149.207229][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207232][ T3485] device_add+0x399e/0x3f20 [ 149.207235][ T3485] usb_set_configuration+0x39cf/0x4010 [ 149.207239][ T3485] usb_generic_driver_probe+0x138/0x300 [ 149.207242][ T3485] usb_probe_device+0x317/0x570 [ 149.207245][ T3485] really_probe+0xebd/0x2420 [ 149.207254][ T3485] driver_probe_device+0x293/0x390 [ 149.207257][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207260][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207263][ T3485] __device_attach+0x538/0x860 [ 149.207266][ T3485] device_initial_probe+0x4a/0x60 [ 149.207269][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207272][ T3485] device_add+0x399e/0x3f20 [ 149.207275][ T3485] usb_new_device+0x1bd6/0x2a30 [ 149.207278][ T3485] hub_event+0x5bc9/0x8890 [ 149.207281][ T3485] process_one_work+0x121c/0x1fc0 [ 149.207284][ T3485] worker_thread+0x10cc/0x2740 [ 149.207286][ T3485] kthread+0x51c/0x560 [ 149.207289][ T3485] ret_from_fork+0x1f/0x30 [ 149.207294][ T3485] ===================================================== [ 149.207298][ T3485] Disabling lock debugging due to kernel taint [ 149.207302][ T3485] Kernel panic - not syncing: panic_on_warn set ... [ 149.207307][ T3485] CPU: 1 PID: 3485 Comm: kworker/1:2 Tainted: G B 5.10.0-rc4-syzkaller #0 [ 149.207312][ T3485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.207316][ T3485] Workqueue: usb_hub_wq hub_event [ 149.207321][ T3485] Call Trace: [ 149.207324][ T3485] dump_stack+0x21c/0x280 [ 149.207326][ T3485] panic+0x4c8/0xea7 [ 149.207329][ T3485] ? add_taint+0x17c/0x210 [ 149.207332][ T3485] ? vsnprintf+0x325/0x3610 [ 149.207335][ T3485] kmsan_report+0x1da/0x1e0 [ 149.207338][ T3485] __msan_warning+0x5f/0xa0 [ 149.207341][ T3485] mac_address_string+0x1040/0x1170 [ 149.207344][ T3485] ? kmsan_get_metadata+0xda/0x180 [ 149.207348][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.207350][ T3485] pointer+0x9fe/0x1ca0 [ 149.207354][ T3485] ? kmsan_get_metadata+0x116/0x180 [ 149.207357][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.207360][ T3485] vsnprintf+0x1a4f/0x3610 [ 149.207363][ T3485] vscnprintf+0xbe/0x1c0 [ 149.207366][ T3485] vprintk_store+0xff/0x14a0 [ 149.207369][ T3485] ? kmsan_internal_set_origin+0x85/0xc0 [ 149.207372][ T3485] vprintk_emit+0x2ae/0x820 [ 149.207375][ T3485] ? __device_attach+0x538/0x860 [ 149.207378][ T3485] ? device_initial_probe+0x4a/0x60 [ 149.207381][ T3485] ? bus_probe_device+0x177/0x3d0 [ 149.207384][ T3485] vprintk_default+0x86/0xa0 [ 149.207386][ T3485] vprintk_func+0x2ed/0x2f0 [ 149.207389][ T3485] printk+0x180/0x1cd [ 149.207392][ T3485] ? dvb_usb_adapter_dvb_init+0x79f/0x1300 [ 149.207396][ T3485] dvb_usb_adapter_dvb_init+0x818/0x1300 [ 149.207399][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.207402][ T3485] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 149.207405][ T3485] dvb_usb_device_init+0x27fd/0x3350 [ 149.207408][ T3485] nova_t_probe+0x73/0x80 [ 149.207411][ T3485] ? dibusb_mc_probe+0x80/0x80 [ 149.207414][ T3485] usb_probe_interface+0xfcc/0x1520 [ 149.207417][ T3485] ? usb_register_driver+0x900/0x900 [ 149.207420][ T3485] really_probe+0xebd/0x2420 [ 149.207423][ T3485] driver_probe_device+0x293/0x390 [ 149.207426][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207429][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207432][ T3485] ? state_synced_show+0x130/0x130 [ 149.207435][ T3485] __device_attach+0x538/0x860 [ 149.207439][ T3485] device_initial_probe+0x4a/0x60 [ 149.207442][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207445][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.207448][ T3485] device_add+0x399e/0x3f20 [ 149.207451][ T3485] usb_set_configuration+0x39cf/0x4010 [ 149.207455][ T3485] ? kmsan_get_metadata+0x116/0x180 [ 149.207458][ T3485] ? usb_set_configuration+0xa61/0x4010 [ 149.207461][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.207465][ T3485] ? usb_choose_configuration+0xc72/0xf00 [ 149.207468][ T3485] usb_generic_driver_probe+0x138/0x300 [ 149.207471][ T3485] ? usb_choose_configuration+0xf00/0xf00 [ 149.207474][ T3485] usb_probe_device+0x317/0x570 [ 149.207478][ T3485] ? usb_register_device_driver+0x590/0x590 [ 149.207481][ T3485] really_probe+0xebd/0x2420 [ 149.207484][ T3485] driver_probe_device+0x293/0x390 [ 149.207487][ T3485] __device_attach_driver+0x63f/0x830 [ 149.207490][ T3485] bus_for_each_drv+0x2ca/0x3f0 [ 149.207493][ T3485] ? state_synced_show+0x130/0x130 [ 149.207496][ T3485] __device_attach+0x538/0x860 [ 149.207499][ T3485] device_initial_probe+0x4a/0x60 [ 149.207502][ T3485] bus_probe_device+0x177/0x3d0 [ 149.207505][ T3485] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.207508][ T3485] device_add+0x399e/0x3f20 [ 149.207511][ T3485] usb_new_device+0x1bd6 [ 149.207517][ T3485] Lost 13 message(s)!