[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 128.428872][ T8422] bash (8422) used greatest stack depth: 4048 bytes left Warning: Permanently added '10.128.0.157' (ECDSA) to the list of known hosts. executing program [ 139.076508][ T3337] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 139.325257][ T3337] usb 1-1: Using ep0 maxpacket: 8 [ 139.485507][ T3337] usb 1-1: unable to get BOS descriptor or descriptor too short [ 139.565553][ T3337] usb 1-1: config 101 has an invalid interface number: 123 but max is 0 [ 139.574097][ T3337] usb 1-1: config 101 has no interface number 0 [ 139.580680][ T3337] usb 1-1: config 101 interface 123 altsetting 32 endpoint 0xA has invalid maxpacket 1024, setting to 64 [ 139.592173][ T3337] usb 1-1: config 101 interface 123 altsetting 32 endpoint 0xB has invalid maxpacket 512, setting to 64 [ 139.603612][ T3337] usb 1-1: config 101 interface 123 altsetting 32 bulk endpoint 0x2 has invalid maxpacket 8 [ 139.613991][ T3337] usb 1-1: config 101 interface 123 altsetting 32 bulk endpoint 0xF has invalid maxpacket 1023 [ 139.624601][ T3337] usb 1-1: config 101 interface 123 altsetting 32 endpoint 0x3 has invalid maxpacket 1024, setting to 64 [ 139.636058][ T3337] usb 1-1: config 101 interface 123 has no altsetting 0 [ 139.875384][ T3337] usb 1-1: string descriptor 0 read error: -22 [ 139.881803][ T3337] usb 1-1: New USB device found, idVendor=17ef, idProduct=304b, bcdDevice=24.89 [ 139.891090][ T3337] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 executing program [ 140.155590][ T3337] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 140.191359][ T3337] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 140.435227][ T3337] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 140.585369][ T3337] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to read reg index 0x0006: -71 [ 140.596408][ T3337] ===================================================== [ 140.603349][ T3337] BUG: KMSAN: uninit-value in ax88179_get_mac_addr+0x481/0x850 [ 140.610882][ T3337] CPU: 0 PID: 3337 Comm: kworker/0:2 Not tainted 5.8.0-rc5-syzkaller #0 [ 140.619269][ T3337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 140.629323][ T3337] Workqueue: usb_hub_wq hub_event [ 140.634335][ T3337] Call Trace: [ 140.637607][ T3337] dump_stack+0x21c/0x280 [ 140.641937][ T3337] kmsan_report+0xf7/0x1e0 [ 140.646334][ T3337] __msan_warning+0x58/0xa0 [ 140.650822][ T3337] ax88179_get_mac_addr+0x481/0x850 [ 140.656016][ T3337] ax88179_bind+0x3ec/0x19c0 [ 140.660607][ T3337] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 140.666748][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.671922][ T3337] ? ax88179_resume+0x1250/0x1250 [ 140.676925][ T3337] usbnet_probe+0x1152/0x3f90 [ 140.681583][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.686759][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.691936][ T3337] ? kmsan_set_origin_checked+0x95/0xf0 [ 140.697482][ T3337] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 140.703540][ T3337] ? usbnet_disconnect+0x670/0x670 [ 140.708671][ T3337] usb_probe_interface+0xece/0x1550 [ 140.713854][ T3337] ? usb_register_driver+0x900/0x900 [ 140.719164][ T3337] really_probe+0xf20/0x20b0 [ 140.723737][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.728915][ T3337] driver_probe_device+0x293/0x390 [ 140.734047][ T3337] __device_attach_driver+0x63f/0x830 [ 140.739402][ T3337] bus_for_each_drv+0x2ca/0x3f0 [ 140.744357][ T3337] ? coredump_store+0xf0/0xf0 [ 140.749103][ T3337] __device_attach+0x4e2/0x7f0 [ 140.753871][ T3337] device_initial_probe+0x4a/0x60 [ 140.758886][ T3337] bus_probe_device+0x177/0x3d0 [ 140.763718][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.769550][ T3337] device_add+0x3b0e/0x40d0 [ 140.774042][ T3337] usb_set_configuration+0x380f/0x3f10 [ 140.779481][ T3337] ? usb_set_configuration+0xb41/0x3f10 [ 140.785039][ T3337] usb_generic_driver_probe+0x138/0x300 [ 140.790567][ T3337] ? usb_choose_configuration+0xe70/0xe70 [ 140.796262][ T3337] usb_probe_device+0x311/0x490 [ 140.801109][ T3337] ? usb_register_device_driver+0x540/0x540 [ 140.807031][ T3337] really_probe+0xf20/0x20b0 [ 140.811602][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.816781][ T3337] driver_probe_device+0x293/0x390 [ 140.821886][ T3337] __device_attach_driver+0x63f/0x830 [ 140.827260][ T3337] bus_for_each_drv+0x2ca/0x3f0 [ 140.832098][ T3337] ? coredump_store+0xf0/0xf0 [ 140.836782][ T3337] __device_attach+0x4e2/0x7f0 [ 140.841665][ T3337] device_initial_probe+0x4a/0x60 [ 140.846668][ T3337] bus_probe_device+0x177/0x3d0 [ 140.851498][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.857285][ T3337] device_add+0x3b0e/0x40d0 [ 140.861777][ T3337] usb_new_device+0x1bd4/0x2a30 [ 140.866615][ T3337] hub_event+0x5e7b/0x8a70 [ 140.871075][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.876271][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.882075][ T3337] ? led_work+0x7c0/0x7c0 [ 140.886397][ T3337] process_one_work+0x1688/0x2140 [ 140.891437][ T3337] worker_thread+0x10bc/0x2730 [ 140.896198][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 140.901387][ T3337] kthread+0x551/0x590 [ 140.905466][ T3337] ? process_one_work+0x2140/0x2140 [ 140.910666][ T3337] ? kthread_blkcg+0x110/0x110 [ 140.915521][ T3337] ret_from_fork+0x1f/0x30 [ 140.919914][ T3337] [ 140.922221][ T3337] Local variable ----mac@ax88179_get_mac_addr created at: [ 140.929313][ T3337] ax88179_get_mac_addr+0x4d/0x850 [ 140.934403][ T3337] ax88179_get_mac_addr+0x4d/0x850 [ 140.939490][ T3337] ===================================================== [ 140.946393][ T3337] Disabling lock debugging due to kernel taint [ 140.952523][ T3337] Kernel panic - not syncing: panic_on_warn set ... [ 140.959089][ T3337] CPU: 0 PID: 3337 Comm: kworker/0:2 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 140.968778][ T3337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 140.978829][ T3337] Workqueue: usb_hub_wq hub_event [ 140.983832][ T3337] Call Trace: [ 140.987107][ T3337] dump_stack+0x21c/0x280 [ 140.991423][ T3337] panic+0x4d7/0xef7 [ 140.995323][ T3337] ? add_taint+0x17c/0x210 [ 140.999731][ T3337] kmsan_report+0x1df/0x1e0 [ 141.004263][ T3337] __msan_warning+0x58/0xa0 [ 141.008748][ T3337] ax88179_get_mac_addr+0x481/0x850 [ 141.013930][ T3337] ax88179_bind+0x3ec/0x19c0 [ 141.018500][ T3337] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 141.024633][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.029815][ T3337] ? ax88179_resume+0x1250/0x1250 [ 141.034827][ T3337] usbnet_probe+0x1152/0x3f90 [ 141.039494][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.044711][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.049887][ T3337] ? kmsan_set_origin_checked+0x95/0xf0 [ 141.055416][ T3337] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 141.061470][ T3337] ? usbnet_disconnect+0x670/0x670 [ 141.066572][ T3337] usb_probe_interface+0xece/0x1550 [ 141.071755][ T3337] ? usb_register_driver+0x900/0x900 [ 141.077121][ T3337] really_probe+0xf20/0x20b0 [ 141.081690][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.086872][ T3337] driver_probe_device+0x293/0x390 [ 141.092067][ T3337] __device_attach_driver+0x63f/0x830 [ 141.097447][ T3337] bus_for_each_drv+0x2ca/0x3f0 [ 141.102277][ T3337] ? coredump_store+0xf0/0xf0 [ 141.106933][ T3337] __device_attach+0x4e2/0x7f0 [ 141.111680][ T3337] device_initial_probe+0x4a/0x60 [ 141.116685][ T3337] bus_probe_device+0x177/0x3d0 [ 141.121528][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.127312][ T3337] device_add+0x3b0e/0x40d0 [ 141.131819][ T3337] usb_set_configuration+0x380f/0x3f10 [ 141.137278][ T3337] ? usb_set_configuration+0xb41/0x3f10 [ 141.142818][ T3337] usb_generic_driver_probe+0x138/0x300 [ 141.148342][ T3337] ? usb_choose_configuration+0xe70/0xe70 [ 141.154057][ T3337] usb_probe_device+0x311/0x490 [ 141.158886][ T3337] ? usb_register_device_driver+0x540/0x540 [ 141.164757][ T3337] really_probe+0xf20/0x20b0 [ 141.169334][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.174513][ T3337] driver_probe_device+0x293/0x390 [ 141.179605][ T3337] __device_attach_driver+0x63f/0x830 [ 141.184973][ T3337] bus_for_each_drv+0x2ca/0x3f0 [ 141.189805][ T3337] ? coredump_store+0xf0/0xf0 [ 141.194462][ T3337] __device_attach+0x4e2/0x7f0 [ 141.199207][ T3337] device_initial_probe+0x4a/0x60 [ 141.204214][ T3337] bus_probe_device+0x177/0x3d0 [ 141.209049][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.214840][ T3337] device_add+0x3b0e/0x40d0 [ 141.219344][ T3337] usb_new_device+0x1bd4/0x2a30 [ 141.224180][ T3337] hub_event+0x5e7b/0x8a70 [ 141.228592][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.233768][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.239549][ T3337] ? led_work+0x7c0/0x7c0 [ 141.243859][ T3337] process_one_work+0x1688/0x2140 [ 141.248869][ T3337] worker_thread+0x10bc/0x2730 [ 141.253612][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.258794][ T3337] kthread+0x551/0x590 [ 141.262842][ T3337] ? process_one_work+0x2140/0x2140 [ 141.268045][ T3337] ? kthread_blkcg+0x110/0x110 [ 141.272785][ T3337] ret_from_fork+0x1f/0x30 [ 141.277913][ T3337] ------------[ cut here ]------------ [ 141.283347][ T3337] kernel BUG at mm/kmsan/kmsan.h:87! [ 141.288609][ T3337] invalid opcode: 0000 [#1] SMP [ 141.293435][ T3337] CPU: 0 PID: 3337 Comm: kworker/0:2 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 141.303114][ T3337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 141.313147][ T3337] Workqueue: usb_hub_wq hub_event [ 141.318161][ T3337] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 141.324720][ T3337] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 b0 63 e1 91 31 c0 e8 f8 02 30 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 c2 13 b0 0e 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 141.344296][ T3337] RSP: 0018:ffff8881219ba5a8 EFLAGS: 00010046 [ 141.350333][ T3337] RAX: 0000000000000002 RBX: 0000000007690002 RCX: 0000000007690002 [ 141.358277][ T3337] RDX: 0000000000000000 RSI: 0000000000000480 RDI: ffff8881219ba68c [ 141.366222][ T3337] RBP: ffff8881219ba650 R08: ffffea000000000f R09: ffff88812fffa000 [ 141.374166][ T3337] R10: 0000000000000002 R11: ffff888126213d00 R12: 0000000000000000 [ 141.382108][ T3337] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000001 [ 141.390053][ T3337] FS: 0000000000000000(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 141.398952][ T3337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 141.405508][ T3337] CR2: 00005588709d9188 CR3: 00000000bb986000 CR4: 00000000001406f0 [ 141.413467][ T3337] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 141.421412][ T3337] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 141.429351][ T3337] Call Trace: [ 141.432626][ T3337] kmsan_check_memory+0xd/0x10 [ 141.437370][ T3337] iowrite8+0x99/0x300 [ 141.441418][ T3337] pvpanic_panic_notify+0xb7/0xe0 [ 141.446416][ T3337] ? pvpanic_mmio_remove+0x60/0x60 [ 141.451502][ T3337] atomic_notifier_call_chain+0x123/0x290 [ 141.457202][ T3337] panic+0x560/0xef7 [ 141.461087][ T3337] ? add_taint+0x17c/0x210 [ 141.465479][ T3337] kmsan_report+0x1df/0x1e0 [ 141.469957][ T3337] __msan_warning+0x58/0xa0 [ 141.474438][ T3337] ax88179_get_mac_addr+0x481/0x850 [ 141.479614][ T3337] ax88179_bind+0x3ec/0x19c0 [ 141.484191][ T3337] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 141.490319][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.495492][ T3337] ? ax88179_resume+0x1250/0x1250 [ 141.500490][ T3337] usbnet_probe+0x1152/0x3f90 [ 141.505142][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.510313][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.515483][ T3337] ? kmsan_set_origin_checked+0x95/0xf0 [ 141.521000][ T3337] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 141.527061][ T3337] ? usbnet_disconnect+0x670/0x670 [ 141.532162][ T3337] usb_probe_interface+0xece/0x1550 [ 141.537339][ T3337] ? usb_register_driver+0x900/0x900 [ 141.542599][ T3337] really_probe+0xf20/0x20b0 [ 141.547163][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.552346][ T3337] driver_probe_device+0x293/0x390 [ 141.557436][ T3337] __device_attach_driver+0x63f/0x830 [ 141.562785][ T3337] bus_for_each_drv+0x2ca/0x3f0 [ 141.567610][ T3337] ? coredump_store+0xf0/0xf0 [ 141.572370][ T3337] __device_attach+0x4e2/0x7f0 [ 141.577115][ T3337] device_initial_probe+0x4a/0x60 [ 141.582201][ T3337] bus_probe_device+0x177/0x3d0 [ 141.587029][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.592809][ T3337] device_add+0x3b0e/0x40d0 [ 141.597299][ T3337] usb_set_configuration+0x380f/0x3f10 [ 141.602736][ T3337] ? usb_set_configuration+0xb41/0x3f10 [ 141.608274][ T3337] usb_generic_driver_probe+0x138/0x300 [ 141.613794][ T3337] ? usb_choose_configuration+0xe70/0xe70 [ 141.619485][ T3337] usb_probe_device+0x311/0x490 [ 141.624313][ T3337] ? usb_register_device_driver+0x540/0x540 [ 141.630177][ T3337] really_probe+0xf20/0x20b0 [ 141.634740][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.639916][ T3337] driver_probe_device+0x293/0x390 [ 141.645005][ T3337] __device_attach_driver+0x63f/0x830 [ 141.650358][ T3337] bus_for_each_drv+0x2ca/0x3f0 [ 141.655182][ T3337] ? coredump_store+0xf0/0xf0 [ 141.659836][ T3337] __device_attach+0x4e2/0x7f0 [ 141.664580][ T3337] device_initial_probe+0x4a/0x60 [ 141.669590][ T3337] bus_probe_device+0x177/0x3d0 [ 141.674415][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.680194][ T3337] device_add+0x3b0e/0x40d0 [ 141.684684][ T3337] usb_new_device+0x1bd4/0x2a30 [ 141.689528][ T3337] hub_event+0x5e7b/0x8a70 [ 141.693935][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.699196][ T3337] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 141.704986][ T3337] ? led_work+0x7c0/0x7c0 [ 141.709291][ T3337] process_one_work+0x1688/0x2140 [ 141.714297][ T3337] worker_thread+0x10bc/0x2730 [ 141.719482][ T3337] ? kmsan_get_metadata+0x116/0x180 [ 141.724672][ T3337] kthread+0x551/0x590 [ 141.728733][ T3337] ? process_one_work+0x2140/0x2140 [ 141.733930][ T3337] ? kthread_blkcg+0x110/0x110 [ 141.738680][ T3337] ret_from_fork+0x1f/0x30 [ 141.743084][ T3337] Modules linked in: [ 141.746972][ T3337] ---[ end trace 84e2c6ce2ae09edd ]--- [ 141.752415][ T3337] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 141.758974][ T3337] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 b0 63 e1 91 31 c0 e8 f8 02 30 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 c2 13 b0 0e 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 141.778565][ T3337] RSP: 0018:ffff8881219ba5a8 EFLAGS: 00010046 [ 141.784609][ T3337] RAX: 0000000000000002 RBX: 0000000007690002 RCX: 0000000007690002 [ 141.792562][ T3337] RDX: 0000000000000000 RSI: 0000000000000480 RDI: ffff8881219ba68c [ 141.800511][ T3337] RBP: ffff8881219ba650 R08: ffffea000000000f R09: ffff88812fffa000 [ 141.808457][ T3337] R10: 0000000000000002 R11: ffff888126213d00 R12: 0000000000000000 [ 141.816404][ T3337] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000001 [ 141.824352][ T3337] FS: 0000000000000000(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 141.833251][ T3337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 141.839805][ T3337] CR2: 00005588709d9188 CR3: 00000000bb986000 CR4: 00000000001406f0 [ 141.847752][ T3337] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 141.855747][ T3337] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 141.863693][ T3337] Kernel panic - not syncing: Fatal exception [ 141.870363][ T3337] Kernel Offset: disabled [ 141.874676][ T3337] Rebooting in 86400 seconds..