[ 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 '10.128.0.17' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 145.886339][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 146.126380][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 146.296701][ T12] usb 1-1: unable to get BOS descriptor or descriptor too short [ 146.406481][ T12] usb 1-1: config 101 has an invalid interface number: 123 but max is 0 [ 146.415760][ T12] usb 1-1: config 101 has no interface number 0 [ 146.422468][ T12] usb 1-1: config 101 interface 123 altsetting 32 endpoint 0xA has invalid maxpacket 1024, setting to 64 [ 146.434530][ T12] usb 1-1: config 101 interface 123 altsetting 32 endpoint 0xB has invalid maxpacket 512, setting to 64 [ 146.446211][ T12] usb 1-1: config 101 interface 123 altsetting 32 bulk endpoint 0x2 has invalid maxpacket 8 [ 146.456681][ T12] usb 1-1: config 101 interface 123 altsetting 32 bulk endpoint 0xF has invalid maxpacket 1023 [ 146.467483][ T12] usb 1-1: config 101 interface 123 altsetting 32 endpoint 0x3 has invalid maxpacket 1024, setting to 64 [ 146.479239][ T12] usb 1-1: config 101 interface 123 has no altsetting 0 [ 146.746739][ T12] usb 1-1: string descriptor 0 read error: -22 [ 146.753684][ T12] usb 1-1: New USB device found, idVendor=17ef, idProduct=304b, bcdDevice=24.89 [ 146.763133][ T12] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 executing program [ 147.046693][ T12] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 147.087166][ T12] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to write reg index 0x0002: -71 [ 147.336353][ T12] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to write reg index 0x0001: -71 [ 147.486570][ T12] ax88179_178a 1-1:101.123 (unnamed net_device) (uninitialized): Failed to read reg index 0x0006: -71 [ 147.497748][ T12] ===================================================== [ 147.504736][ T12] BUG: KMSAN: uninit-value in ax88179_get_mac_addr+0x481/0x850 [ 147.512549][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.8.0-rc5-syzkaller #0 [ 147.520866][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.530946][ T12] Workqueue: usb_hub_wq hub_event [ 147.535970][ T12] Call Trace: [ 147.539269][ T12] dump_stack+0x21c/0x280 [ 147.543589][ T12] kmsan_report+0xf7/0x1e0 [ 147.547995][ T12] __msan_warning+0x58/0xa0 [ 147.552491][ T12] ax88179_get_mac_addr+0x481/0x850 [ 147.557687][ T12] ax88179_bind+0x3ec/0x19c0 [ 147.562362][ T12] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 147.568525][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.574419][ T12] ? ax88179_resume+0x1250/0x1250 [ 147.579431][ T12] usbnet_probe+0x1152/0x3f90 [ 147.584097][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.589290][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.594483][ T12] ? kmsan_set_origin_checked+0x95/0xf0 [ 147.600022][ T12] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 147.606088][ T12] ? usbnet_disconnect+0x670/0x670 [ 147.611187][ T12] usb_probe_interface+0xece/0x1550 [ 147.616380][ T12] ? usb_register_driver+0x900/0x900 [ 147.621739][ T12] really_probe+0xf20/0x20b0 [ 147.626466][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.631770][ T12] driver_probe_device+0x293/0x390 [ 147.636883][ T12] __device_attach_driver+0x63f/0x830 [ 147.642249][ T12] bus_for_each_drv+0x2ca/0x3f0 [ 147.647087][ T12] ? coredump_store+0xf0/0xf0 [ 147.651755][ T12] __device_attach+0x4e2/0x7f0 [ 147.656510][ T12] device_initial_probe+0x4a/0x60 [ 147.661540][ T12] bus_probe_device+0x177/0x3d0 [ 147.666412][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 147.672231][ T12] device_add+0x3b0e/0x40d0 [ 147.676777][ T12] usb_set_configuration+0x380f/0x3f10 [ 147.682258][ T12] ? usb_set_configuration+0xb41/0x3f10 [ 147.687823][ T12] usb_generic_driver_probe+0x138/0x300 [ 147.693365][ T12] ? usb_choose_configuration+0xe70/0xe70 [ 147.699078][ T12] usb_probe_device+0x311/0x490 [ 147.703926][ T12] ? usb_register_device_driver+0x540/0x540 [ 147.709810][ T12] really_probe+0xf20/0x20b0 [ 147.714391][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.719597][ T12] driver_probe_device+0x293/0x390 [ 147.724712][ T12] __device_attach_driver+0x63f/0x830 [ 147.730083][ T12] bus_for_each_drv+0x2ca/0x3f0 [ 147.734934][ T12] ? coredump_store+0xf0/0xf0 [ 147.739602][ T12] __device_attach+0x4e2/0x7f0 [ 147.744357][ T12] device_initial_probe+0x4a/0x60 [ 147.751079][ T12] bus_probe_device+0x177/0x3d0 [ 147.755938][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 147.761748][ T12] device_add+0x3b0e/0x40d0 [ 147.766303][ T12] usb_new_device+0x1bd4/0x2a30 [ 147.771150][ T12] hub_event+0x5e7b/0x8a70 [ 147.775574][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.780862][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 147.786663][ T12] ? led_work+0x7c0/0x7c0 [ 147.790984][ T12] process_one_work+0x1688/0x2140 [ 147.796019][ T12] worker_thread+0x10bc/0x2730 [ 147.800777][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.805999][ T12] kthread+0x551/0x590 [ 147.811707][ T12] ? process_one_work+0x2140/0x2140 [ 147.816898][ T12] ? kthread_blkcg+0x110/0x110 [ 147.821671][ T12] ret_from_fork+0x1f/0x30 [ 147.826070][ T12] [ 147.828380][ T12] Local variable ----mac@ax88179_get_mac_addr created at: [ 147.835479][ T12] ax88179_get_mac_addr+0x4d/0x850 [ 147.840576][ T12] ax88179_get_mac_addr+0x4d/0x850 [ 147.845660][ T12] ===================================================== [ 147.852582][ T12] Disabling lock debugging due to kernel taint [ 147.858722][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 147.865319][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 147.874983][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.885115][ T12] Workqueue: usb_hub_wq hub_event [ 147.891697][ T12] Call Trace: [ 147.894998][ T12] dump_stack+0x21c/0x280 [ 147.899325][ T12] panic+0x4d7/0xef7 [ 147.903229][ T12] ? add_taint+0x17c/0x210 [ 147.907697][ T12] kmsan_report+0x1df/0x1e0 [ 147.912190][ T12] __msan_warning+0x58/0xa0 [ 147.916698][ T12] ax88179_get_mac_addr+0x481/0x850 [ 147.921908][ T12] ax88179_bind+0x3ec/0x19c0 [ 147.926510][ T12] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 147.932657][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.937846][ T12] ? ax88179_resume+0x1250/0x1250 [ 147.942855][ T12] usbnet_probe+0x1152/0x3f90 [ 147.947532][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.952715][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.957902][ T12] ? kmsan_set_origin_checked+0x95/0xf0 [ 147.963437][ T12] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 147.969509][ T12] ? usbnet_disconnect+0x670/0x670 [ 147.974614][ T12] usb_probe_interface+0xece/0x1550 [ 147.979810][ T12] ? usb_register_driver+0x900/0x900 [ 147.985088][ T12] really_probe+0xf20/0x20b0 [ 147.989680][ T12] ? kmsan_get_metadata+0x116/0x180 [ 147.994897][ T12] driver_probe_device+0x293/0x390 [ 148.000024][ T12] __device_attach_driver+0x63f/0x830 [ 148.005401][ T12] bus_for_each_drv+0x2ca/0x3f0 [ 148.010242][ T12] ? coredump_store+0xf0/0xf0 [ 148.014997][ T12] __device_attach+0x4e2/0x7f0 [ 148.019770][ T12] device_initial_probe+0x4a/0x60 [ 148.024794][ T12] bus_probe_device+0x177/0x3d0 [ 148.029665][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.035462][ T12] device_add+0x3b0e/0x40d0 [ 148.039986][ T12] usb_set_configuration+0x380f/0x3f10 [ 148.045441][ T12] ? usb_set_configuration+0xb41/0x3f10 [ 148.051016][ T12] usb_generic_driver_probe+0x138/0x300 [ 148.056566][ T12] ? usb_choose_configuration+0xe70/0xe70 [ 148.062268][ T12] usb_probe_device+0x311/0x490 [ 148.067128][ T12] ? usb_register_device_driver+0x540/0x540 [ 148.073056][ T12] really_probe+0xf20/0x20b0 [ 148.077646][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.082836][ T12] driver_probe_device+0x293/0x390 [ 148.087955][ T12] __device_attach_driver+0x63f/0x830 [ 148.093417][ T12] bus_for_each_drv+0x2ca/0x3f0 [ 148.098263][ T12] ? coredump_store+0xf0/0xf0 [ 148.102957][ T12] __device_attach+0x4e2/0x7f0 [ 148.107724][ T12] device_initial_probe+0x4a/0x60 [ 148.112767][ T12] bus_probe_device+0x177/0x3d0 [ 148.117629][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.123441][ T12] device_add+0x3b0e/0x40d0 [ 148.127953][ T12] usb_new_device+0x1bd4/0x2a30 [ 148.132801][ T12] hub_event+0x5e7b/0x8a70 [ 148.137225][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.142414][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.148213][ T12] ? led_work+0x7c0/0x7c0 [ 148.152583][ T12] process_one_work+0x1688/0x2140 [ 148.157632][ T12] worker_thread+0x10bc/0x2730 [ 148.162393][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.167597][ T12] kthread+0x551/0x590 [ 148.171654][ T12] ? process_one_work+0x2140/0x2140 [ 148.176989][ T12] ? kthread_blkcg+0x110/0x110 [ 148.181881][ T12] ret_from_fork+0x1f/0x30 [ 148.186407][ T12] ------------[ cut here ]------------ [ 148.191849][ T12] kernel BUG at mm/kmsan/kmsan.h:87! [ 148.197132][ T12] invalid opcode: 0000 [#1] SMP [ 148.202105][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 148.211751][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.221885][ T12] Workqueue: usb_hub_wq hub_event [ 148.226911][ T12] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 148.233525][ T12] 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 [ 148.253107][ T12] RSP: 0018:ffff88812df865a8 EFLAGS: 00010046 [ 148.259167][ T12] RAX: 0000000000000002 RBX: 0000000007690002 RCX: 0000000007690002 [ 148.267117][ T12] RDX: 0000000000000000 RSI: 00000000000004a0 RDI: ffff88812df8668c [ 148.275065][ T12] RBP: ffff88812df86650 R08: ffffea000000000f R09: ffff88812fffa000 [ 148.283016][ T12] R10: 0000000000000002 R11: ffff88812df75b80 R12: 0000000000000000 [ 148.290980][ T12] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000001 [ 148.298931][ T12] FS: 0000000000000000(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 148.307922][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 148.314482][ T12] CR2: 0000562c32f3e160 CR3: 0000000114d61000 CR4: 00000000001406f0 [ 148.322431][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 148.330380][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 148.338325][ T12] Call Trace: [ 148.341626][ T12] kmsan_check_memory+0xd/0x10 [ 148.346370][ T12] iowrite8+0x99/0x300 [ 148.350428][ T12] pvpanic_panic_notify+0xb7/0xe0 [ 148.355430][ T12] ? pvpanic_mmio_remove+0x60/0x60 [ 148.360608][ T12] atomic_notifier_call_chain+0x123/0x290 [ 148.366310][ T12] panic+0x560/0xef7 [ 148.370217][ T12] ? add_taint+0x17c/0x210 [ 148.374639][ T12] kmsan_report+0x1df/0x1e0 [ 148.379148][ T12] __msan_warning+0x58/0xa0 [ 148.383666][ T12] ax88179_get_mac_addr+0x481/0x850 [ 148.388884][ T12] ax88179_bind+0x3ec/0x19c0 [ 148.393633][ T12] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 148.399767][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.404945][ T12] ? ax88179_resume+0x1250/0x1250 [ 148.409949][ T12] usbnet_probe+0x1152/0x3f90 [ 148.414621][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.419804][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.424989][ T12] ? kmsan_set_origin_checked+0x95/0xf0 [ 148.430510][ T12] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 148.436561][ T12] ? usbnet_disconnect+0x670/0x670 [ 148.441650][ T12] usb_probe_interface+0xece/0x1550 [ 148.446836][ T12] ? usb_register_driver+0x900/0x900 [ 148.452099][ T12] really_probe+0xf20/0x20b0 [ 148.456667][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.461861][ T12] driver_probe_device+0x293/0x390 [ 148.466954][ T12] __device_attach_driver+0x63f/0x830 [ 148.472306][ T12] bus_for_each_drv+0x2ca/0x3f0 [ 148.477138][ T12] ? coredump_store+0xf0/0xf0 [ 148.481794][ T12] __device_attach+0x4e2/0x7f0 [ 148.486548][ T12] device_initial_probe+0x4a/0x60 [ 148.491553][ T12] bus_probe_device+0x177/0x3d0 [ 148.496417][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.502345][ T12] device_add+0x3b0e/0x40d0 [ 148.506858][ T12] usb_set_configuration+0x380f/0x3f10 [ 148.512304][ T12] ? usb_set_configuration+0xb41/0x3f10 [ 148.518369][ T12] usb_generic_driver_probe+0x138/0x300 [ 148.523893][ T12] ? usb_choose_configuration+0xe70/0xe70 [ 148.529732][ T12] usb_probe_device+0x311/0x490 [ 148.534636][ T12] ? usb_register_device_driver+0x540/0x540 [ 148.540617][ T12] really_probe+0xf20/0x20b0 [ 148.545220][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.550409][ T12] driver_probe_device+0x293/0x390 [ 148.555504][ T12] __device_attach_driver+0x63f/0x830 [ 148.560862][ T12] bus_for_each_drv+0x2ca/0x3f0 [ 148.565728][ T12] ? coredump_store+0xf0/0xf0 [ 148.570400][ T12] __device_attach+0x4e2/0x7f0 [ 148.575151][ T12] device_initial_probe+0x4a/0x60 [ 148.580175][ T12] bus_probe_device+0x177/0x3d0 [ 148.585032][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.590852][ T12] device_add+0x3b0e/0x40d0 [ 148.595354][ T12] usb_new_device+0x1bd4/0x2a30 [ 148.600189][ T12] hub_event+0x5e7b/0x8a70 [ 148.604605][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.609796][ T12] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.615757][ T12] ? led_work+0x7c0/0x7c0 [ 148.620114][ T12] process_one_work+0x1688/0x2140 [ 148.625139][ T12] worker_thread+0x10bc/0x2730 [ 148.629889][ T12] ? kmsan_get_metadata+0x116/0x180 [ 148.635075][ T12] kthread+0x551/0x590 [ 148.639122][ T12] ? process_one_work+0x2140/0x2140 [ 148.644306][ T12] ? kthread_blkcg+0x110/0x110 [ 148.649054][ T12] ret_from_fork+0x1f/0x30 [ 148.653461][ T12] Modules linked in: [ 148.657365][ T12] ---[ end trace a6747c764551f0c9 ]--- [ 148.662851][ T12] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 148.669625][ T12] 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 [ 148.689511][ T12] RSP: 0018:ffff88812df865a8 EFLAGS: 00010046 [ 148.695565][ T12] RAX: 0000000000000002 RBX: 0000000007690002 RCX: 0000000007690002 [ 148.703532][ T12] RDX: 0000000000000000 RSI: 00000000000004a0 RDI: ffff88812df8668c [ 148.711482][ T12] RBP: ffff88812df86650 R08: ffffea000000000f R09: ffff88812fffa000 [ 148.719431][ T12] R10: 0000000000000002 R11: ffff88812df75b80 R12: 0000000000000000 [ 148.727387][ T12] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000001 [ 148.735620][ T12] FS: 0000000000000000(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 148.744892][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 148.751463][ T12] CR2: 0000562c32f3e160 CR3: 0000000114d61000 CR4: 00000000001406f0 [ 148.759530][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 148.767513][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 148.775496][ T12] Kernel panic - not syncing: Fatal exception [ 148.782395][ T12] Kernel Offset: disabled [ 148.786728][ T12] Rebooting in 86400 seconds..