[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ 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 '10.128.0.193' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 138.403523][ T3037] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 138.763380][ T3037] usb 1-1: config 0 interface 0 altsetting 64 endpoint 0x8A has invalid wMaxPacketSize 0 [ 138.773659][ T3037] usb 1-1: config 0 interface 0 altsetting 64 bulk endpoint 0x8A has invalid maxpacket 0 [ 138.784125][ T3037] usb 1-1: config 0 interface 0 has no altsetting 0 [ 138.790929][ T3037] usb 1-1: New USB device found, idVendor=0681, idProduct=0005, bcdDevice=90.07 [ 138.800176][ T3037] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 138.851445][ T3037] usb 1-1: config 0 descriptor?? [ 138.904176][ T3037] idmouse 1-1:0.0: Siemens ID Mouse FingerTIP Sensor Driver now attached [ 140.152959][ T8474] ===================================================== [ 140.159927][ T8474] BUG: KMSAN: uninit-value in idmouse_open+0x12da/0x1780 [ 140.166938][ T8474] CPU: 0 PID: 8474 Comm: syz-executor157 Not tainted 5.8.0-rc5-syzkaller #0 [ 140.175630][ T8474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 140.185668][ T8474] Call Trace: [ 140.188945][ T8474] dump_stack+0x21c/0x280 [ 140.193259][ T8474] kmsan_report+0xf7/0x1e0 [ 140.197672][ T8474] __msan_warning+0x58/0xa0 [ 140.202181][ T8474] idmouse_open+0x12da/0x1780 [ 140.206853][ T8474] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.212707][ T8474] ? idmouse_read+0x240/0x240 [ 140.217362][ T8474] usb_open+0x27f/0x400 [ 140.221516][ T8474] ? usb_deregister_dev+0x3e0/0x3e0 [ 140.227922][ T8474] chrdev_open+0xc7c/0xe10 [ 140.232331][ T8474] do_dentry_open+0x12bc/0x1d30 [ 140.237172][ T8474] ? cd_forget+0x320/0x320 [ 140.241614][ T8474] vfs_open+0xaf/0xe0 [ 140.245626][ T8474] path_openat+0x542b/0x6ba0 [ 140.250203][ T8474] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.255989][ T8474] ? kmsan_get_metadata+0x116/0x180 [ 140.261217][ T8474] do_filp_open+0x2b8/0x710 [ 140.265761][ T8474] do_sys_openat2+0xa6a/0x1020 [ 140.270514][ T8474] __se_sys_open+0x270/0x2d0 [ 140.275111][ T8474] __x64_sys_open+0x4a/0x70 [ 140.279629][ T8474] do_syscall_64+0xad/0x160 [ 140.284135][ T8474] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 140.290003][ T8474] RIP: 0033:0x401470 [ 140.293905][ T8474] Code: Bad RIP value. [ 140.297955][ T8474] RSP: 002b:00007ffe8619e918 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 140.306361][ T8474] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000401470 [ 140.314310][ T8474] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffe8619e930 [ 140.322433][ T8474] RBP: 00000000006cf018 R08: 0000000000000000 R09: 000000000000000f [ 140.330384][ T8474] R10: 0000000000000064 R11: 0000000000000246 R12: 00000000004023d0 [ 140.338338][ T8474] R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000 [ 140.346302][ T8474] [ 140.348615][ T8474] Uninit was created at: [ 140.352841][ T8474] kmsan_save_stack_with_flags+0x3c/0x90 [ 140.358472][ T8474] kmsan_alloc_page+0xc5/0x1a0 [ 140.363226][ T8474] __alloc_pages_nodemask+0xdf0/0x1030 [ 140.368669][ T8474] alloc_pages_current+0x685/0xb50 [ 140.373761][ T8474] kmalloc_order_trace+0x92/0x3d0 [ 140.378822][ T8474] idmouse_probe+0x48c/0xa60 [ 140.383393][ T8474] usb_probe_interface+0xece/0x1550 [ 140.388638][ T8474] really_probe+0xf20/0x20b0 [ 140.393214][ T8474] driver_probe_device+0x293/0x390 [ 140.398307][ T8474] __device_attach_driver+0x63f/0x830 [ 140.403668][ T8474] bus_for_each_drv+0x2ca/0x3f0 [ 140.408498][ T8474] __device_attach+0x4e2/0x7f0 [ 140.413291][ T8474] device_initial_probe+0x4a/0x60 [ 140.418292][ T8474] bus_probe_device+0x177/0x3d0 [ 140.423118][ T8474] device_add+0x3b0e/0x40d0 [ 140.427597][ T8474] usb_set_configuration+0x380f/0x3f10 [ 140.433030][ T8474] usb_generic_driver_probe+0x138/0x300 [ 140.438549][ T8474] usb_probe_device+0x311/0x490 [ 140.443374][ T8474] really_probe+0xf20/0x20b0 [ 140.447938][ T8474] driver_probe_device+0x293/0x390 [ 140.453061][ T8474] __device_attach_driver+0x63f/0x830 [ 140.458406][ T8474] bus_for_each_drv+0x2ca/0x3f0 [ 140.463246][ T8474] __device_attach+0x4e2/0x7f0 [ 140.467985][ T8474] device_initial_probe+0x4a/0x60 [ 140.472983][ T8474] bus_probe_device+0x177/0x3d0 [ 140.477806][ T8474] device_add+0x3b0e/0x40d0 [ 140.482283][ T8474] usb_new_device+0x1bd4/0x2a30 [ 140.487122][ T8474] hub_event+0x5e7b/0x8a70 [ 140.491512][ T8474] process_one_work+0x1688/0x2140 [ 140.496515][ T8474] worker_thread+0x10bc/0x2730 [ 140.501254][ T8474] kthread+0x551/0x590 [ 140.505298][ T8474] ret_from_fork+0x1f/0x30 [ 140.509683][ T8474] ===================================================== [ 140.516585][ T8474] Disabling lock debugging due to kernel taint [ 140.522710][ T8474] Kernel panic - not syncing: panic_on_warn set ... [ 140.529272][ T8474] CPU: 0 PID: 8474 Comm: syz-executor157 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 140.539308][ T8474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 140.549334][ T8474] Call Trace: [ 140.552603][ T8474] dump_stack+0x21c/0x280 [ 140.556913][ T8474] panic+0x4d7/0xef7 [ 140.560801][ T8474] ? add_taint+0x17c/0x210 [ 140.565214][ T8474] kmsan_report+0x1df/0x1e0 [ 140.569696][ T8474] __msan_warning+0x58/0xa0 [ 140.574176][ T8474] idmouse_open+0x12da/0x1780 [ 140.578936][ T8474] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.584719][ T8474] ? idmouse_read+0x240/0x240 [ 140.589371][ T8474] usb_open+0x27f/0x400 [ 140.593513][ T8474] ? usb_deregister_dev+0x3e0/0x3e0 [ 140.598689][ T8474] chrdev_open+0xc7c/0xe10 [ 140.603090][ T8474] do_dentry_open+0x12bc/0x1d30 [ 140.607918][ T8474] ? cd_forget+0x320/0x320 [ 140.612314][ T8474] vfs_open+0xaf/0xe0 [ 140.616275][ T8474] path_openat+0x542b/0x6ba0 [ 140.620851][ T8474] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.626644][ T8474] ? kmsan_get_metadata+0x116/0x180 [ 140.631838][ T8474] do_filp_open+0x2b8/0x710 [ 140.636365][ T8474] do_sys_openat2+0xa6a/0x1020 [ 140.641115][ T8474] __se_sys_open+0x270/0x2d0 [ 140.645690][ T8474] __x64_sys_open+0x4a/0x70 [ 140.650170][ T8474] do_syscall_64+0xad/0x160 [ 140.654651][ T8474] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 140.660515][ T8474] RIP: 0033:0x401470 [ 140.664379][ T8474] Code: Bad RIP value. [ 140.668419][ T8474] RSP: 002b:00007ffe8619e918 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 140.676809][ T8474] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000401470 [ 140.684758][ T8474] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffe8619e930 [ 140.692711][ T8474] RBP: 00000000006cf018 R08: 0000000000000000 R09: 000000000000000f [ 140.700660][ T8474] R10: 0000000000000064 R11: 0000000000000246 R12: 00000000004023d0 [ 140.708608][ T8474] R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000 [ 140.717882][ T8474] Kernel Offset: disabled [ 140.722206][ T8474] Rebooting in 86400 seconds..