[ OK ] Found device /dev/ttyS0. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ **] A start job is running for OpenBSD …Shell server (1min 22s / 2min 42s)[ ***] A start job is running for OpenBSD …Shell server (1min 23s / 2min 42s)[ *** ] A start job is running for OpenBSD …Shell server (1min 23s / 2min 42s)[ *** ] A start job is running for OpenBSD …Shell server (1min 24s / 2min 42s)[*** ] A start job is running for OpenBSD …Shell server (1min 24s / 2min 42s)[** ] A start job is running for OpenBSD …Shell server (1min 26s / 2min 55s)[ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.171' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 135.617787][ T7] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 135.857548][ T7] usb 1-1: Using ep0 maxpacket: 16 [ 136.137670][ T7] usb 1-1: New USB device found, idVendor=2137, idProduct=0001, bcdDevice=2d.b7 [ 136.146983][ T7] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 136.155573][ T7] usb 1-1: Product: syz [ 136.160110][ T7] usb 1-1: Manufacturer: syz [ 136.165627][ T7] usb 1-1: SerialNumber: syz [ 136.219261][ T7] usb 1-1: config 0 descriptor?? [ 136.270392][ T7] as10x_usb: device has been detected [ 136.277570][ T7] dvbdev: DVB: registering new adapter (Sky IT Digital Key (green led)) [ 136.355842][ T7] usb 1-1: DVB: registering adapter 1 frontend 0 (Sky IT Digital Key (green led))... [ 136.418601][ T7] ===================================================== [ 136.425584][ T7] BUG: KMSAN: uninit-value in schedule_debug+0xcc/0x1f0 [ 136.432581][ T7] CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.11.0-rc7-syzkaller #0 [ 136.440761][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.450844][ T7] Workqueue: usb_hub_wq hub_event [ 136.455936][ T7] Call Trace: [ 136.459226][ T7] dump_stack+0x21c/0x280 [ 136.463588][ T7] kmsan_report+0xfb/0x1e0 [ 136.468036][ T7] __msan_warning+0x5f/0xa0 [ 136.472573][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.477917][ T7] schedule_debug+0xcc/0x1f0 [ 136.482536][ T7] __schedule+0x67/0x5c0 [ 136.486805][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.492039][ T7] schedule+0x270/0x330 [ 136.496226][ T7] io_schedule+0xcc/0x160 [ 136.500582][ T7] wait_on_page_bit_common+0x11ab/0x18f0 [ 136.506255][ T7] ? trace_raw_output_file_check_and_advance_wb_err+0x3f0/0x3f0 [ 136.513927][ T7] generic_file_buffered_read_pagenotuptodate+0x4f5/0x1bb0 [ 136.521167][ T7] generic_file_buffered_read_get_pages+0xf42/0x2120 [ 136.527898][ T7] generic_file_buffered_read+0x851/0x2160 [ 136.533745][ T7] ? kmsan_get_shadow_origin_ptr+0x29/0xb0 [ 136.539739][ T7] ? ret_from_fork+0x1f/0x30 [ 136.544371][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.549599][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.556310][ T7] generic_file_read_iter+0x1bb/0xcf0 [ 136.561716][ T7] ? kmsan_get_shadow_origin_ptr+0x29/0xb0 [ 136.567572][ T7] ? stack_trace_save+0x117/0x1a0 [ 136.572643][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.577889][ T7] ext4_file_read_iter+0x8e2/0xd00 [ 136.583038][ T7] ? ext4_llseek+0x4b0/0x4b0 [ 136.587664][ T7] __kernel_read+0xc2a/0x13e0 [ 136.592378][ T7] integrity_kernel_read+0xfc/0x140 [ 136.597699][ T7] ima_calc_file_hash+0x1ba5/0x40e0 [ 136.602938][ T7] ? kmsan_internal_set_origin+0x85/0xc0 [ 136.608614][ T7] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 136.614721][ T7] ? up_read+0x40/0x2b0 [ 136.618911][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.624168][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.630010][ T7] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 136.636117][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.641956][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.647196][ T7] ? kmsan_internal_set_origin+0x85/0xc0 [ 136.652852][ T7] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 136.659080][ T7] ima_collect_measurement+0x585/0xba0 [ 136.664591][ T7] process_measurement+0x24f3/0x3770 [ 136.669895][ T7] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 136.675969][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.681196][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.687028][ T7] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.693102][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.698307][ T7] ima_file_check+0x131/0x170 [ 136.702995][ T7] path_openat+0x5812/0x6a30 [ 136.707590][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.712791][ T7] do_file_open_root+0x4c1/0xc30 [ 136.717727][ T7] ? kmsan_internal_set_origin+0x85/0xc0 [ 136.723358][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.728565][ T7] file_open_root+0x920/0x990 [ 136.733242][ T7] kernel_read_file_from_path_initns+0x257/0x430 [ 136.739567][ T7] fw_get_filesystem_firmware+0x68e/0xf40 [ 136.745292][ T7] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.751401][ T7] _request_firmware+0x15f9/0x2170 [ 136.756527][ T7] request_firmware+0xc8/0x110 [ 136.761293][ T7] as102_fw_upload+0x2a5/0x830 [ 136.766066][ T7] as102_dvb_register+0xcc3/0xe00 [ 136.771084][ T7] as102_usb_probe+0xad8/0xd60 [ 136.775843][ T7] ? as10x_cmd_stop_streaming+0x360/0x360 [ 136.781558][ T7] usb_probe_interface+0xfcc/0x1520 [ 136.786758][ T7] ? usb_register_driver+0x900/0x900 [ 136.792063][ T7] really_probe+0xe15/0x24d0 [ 136.796671][ T7] driver_probe_device+0x29d/0x3a0 [ 136.801783][ T7] __device_attach_driver+0x63f/0x830 [ 136.807159][ T7] bus_for_each_drv+0x2c8/0x3f0 [ 136.812024][ T7] ? deferred_probe_work_func+0x400/0x400 [ 136.817735][ T7] __device_attach+0x56a/0x890 [ 136.822492][ T7] device_initial_probe+0x4a/0x60 [ 136.827518][ T7] bus_probe_device+0x17e/0x3d0 [ 136.832357][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.838268][ T7] device_add+0x2c15/0x31d0 [ 136.842962][ T7] usb_set_configuration+0x3872/0x3eb0 [ 136.848424][ T7] ? usb_set_configuration+0xa61/0x3eb0 [ 136.853967][ T7] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 136.860123][ T7] usb_generic_driver_probe+0x138/0x300 [ 136.865670][ T7] ? usb_choose_configuration+0xee0/0xee0 [ 136.871384][ T7] usb_probe_device+0x317/0x570 [ 136.876403][ T7] ? usb_register_device_driver+0x590/0x590 [ 136.882330][ T7] really_probe+0xe15/0x24d0 [ 136.886934][ T7] driver_probe_device+0x29d/0x3a0 [ 136.892045][ T7] __device_attach_driver+0x63f/0x830 [ 136.897519][ T7] bus_for_each_drv+0x2c8/0x3f0 [ 136.902390][ T7] ? deferred_probe_work_func+0x400/0x400 [ 136.908127][ T7] __device_attach+0x56a/0x890 [ 136.912895][ T7] device_initial_probe+0x4a/0x60 [ 136.918089][ T7] bus_probe_device+0x17e/0x3d0 [ 136.922953][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.928756][ T7] device_add+0x2c15/0x31d0 [ 136.933287][ T7] usb_new_device+0x1bd4/0x2a30 [ 136.938142][ T7] hub_event+0x5b99/0x8870 [ 136.942556][ T7] ? kmsan_get_metadata+0x116/0x180 [ 136.947759][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 136.953559][ T7] ? led_work+0x780/0x780 [ 136.957879][ T7] process_one_work+0x1219/0x1fe0 [ 136.962915][ T7] worker_thread+0x10ec/0x2340 [ 136.967695][ T7] kthread+0x521/0x560 [ 136.971758][ T7] ? process_one_work+0x1fe0/0x1fe0 [ 136.976966][ T7] ? kthread_blkcg+0x110/0x110 [ 136.981727][ T7] ret_from_fork+0x1f/0x30 [ 136.986143][ T7] [ 136.988453][ T7] Local variable ----wait@mempool_alloc created at: [ 136.995017][ T7] mempool_alloc+0x66/0x990 [ 136.999518][ T7] mempool_alloc+0x66/0x990 [ 137.004022][ T7] ===================================================== [ 137.010939][ T7] Disabling lock debugging due to kernel taint [ 137.018124][ T7] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 137.026940][ T7] CPU: 0 PID: 7 Comm: kworker/0:1 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 137.036768][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 137.046951][ T7] Workqueue: usb_hub_wq hub_event [ 137.052204][ T7] Call Trace: [ 137.055575][ T7] dump_stack+0x21c/0x280 [ 137.060095][ T7] panic+0x4c6/0xea7 [ 137.064222][ T7] ? asm_sysvec_apic_timer_interrupt+0x10/0x20 [ 137.070678][ T7] ? add_taint+0x17c/0x210 [ 137.075269][ T7] ? add_taint+0x17c/0x210 [ 137.079864][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.085262][ T7] schedule_debug+0xf5/0x1f0 [ 137.090031][ T7] __schedule+0x67/0x5c0 [ 137.094466][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.099874][ T7] schedule+0x270/0x330 [ 137.104230][ T7] io_schedule+0xcc/0x160 [ 137.108733][ T7] wait_on_page_bit_common+0x11ab/0x18f0 [ 137.114592][ T7] ? trace_raw_output_file_check_and_advance_wb_err+0x3f0/0x3f0 [ 137.122432][ T7] generic_file_buffered_read_pagenotuptodate+0x4f5/0x1bb0 [ 137.129866][ T7] generic_file_buffered_read_get_pages+0xf42/0x2120 [ 137.136798][ T7] generic_file_buffered_read+0x851/0x2160 [ 137.142828][ T7] ? kmsan_get_shadow_origin_ptr+0x29/0xb0 [ 137.148832][ T7] ? ret_from_fork+0x1f/0x30 [ 137.153614][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.158999][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.165016][ T7] generic_file_read_iter+0x1bb/0xcf0 [ 137.170565][ T7] ? kmsan_get_shadow_origin_ptr+0x29/0xb0 [ 137.176565][ T7] ? stack_trace_save+0x117/0x1a0 [ 137.181810][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.188608][ T7] ext4_file_read_iter+0x8e2/0xd00 [ 137.193961][ T7] ? ext4_llseek+0x4b0/0x4b0 [ 137.198738][ T7] __kernel_read+0xc2a/0x13e0 [ 137.204262][ T7] integrity_kernel_read+0xfc/0x140 [ 137.209669][ T7] ima_calc_file_hash+0x1ba5/0x40e0 [ 137.215039][ T7] ? kmsan_internal_set_origin+0x85/0xc0 [ 137.220860][ T7] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 137.227119][ T7] ? up_read+0x40/0x2b0 [ 137.231422][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.236840][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.242833][ T7] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 137.249095][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.255097][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.260477][ T7] ? kmsan_internal_set_origin+0x85/0xc0 [ 137.266288][ T7] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 137.272542][ T7] ima_collect_measurement+0x585/0xba0 [ 137.278189][ T7] process_measurement+0x24f3/0x3770 [ 137.283666][ T7] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 137.289946][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.295347][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.301438][ T7] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 137.307706][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.313096][ T7] ima_file_check+0x131/0x170 [ 137.317929][ T7] path_openat+0x5812/0x6a30 [ 137.322720][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.328128][ T7] do_file_open_root+0x4c1/0xc30 [ 137.333269][ T7] ? kmsan_internal_set_origin+0x85/0xc0 [ 137.340255][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.345691][ T7] file_open_root+0x920/0x990 [ 137.350562][ T7] kernel_read_file_from_path_initns+0x257/0x430 [ 137.357087][ T7] fw_get_filesystem_firmware+0x68e/0xf40 [ 137.363007][ T7] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 137.369286][ T7] _request_firmware+0x15f9/0x2170 [ 137.374589][ T7] request_firmware+0xc8/0x110 [ 137.379513][ T7] as102_fw_upload+0x2a5/0x830 [ 137.384463][ T7] as102_dvb_register+0xcc3/0xe00 [ 137.389676][ T7] as102_usb_probe+0xad8/0xd60 [ 137.394661][ T7] ? as10x_cmd_stop_streaming+0x360/0x360 [ 137.400573][ T7] usb_probe_interface+0xfcc/0x1520 [ 137.405967][ T7] ? usb_register_driver+0x900/0x900 [ 137.411411][ T7] really_probe+0xe15/0x24d0 [ 137.416202][ T7] driver_probe_device+0x29d/0x3a0 [ 137.421508][ T7] __device_attach_driver+0x63f/0x830 [ 137.427086][ T7] bus_for_each_drv+0x2c8/0x3f0 [ 137.432194][ T7] ? deferred_probe_work_func+0x400/0x400 [ 137.438207][ T7] __device_attach+0x56a/0x890 [ 137.443186][ T7] device_initial_probe+0x4a/0x60 [ 137.448422][ T7] bus_probe_device+0x17e/0x3d0 [ 137.453463][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.459473][ T7] device_add+0x2c15/0x31d0 [ 137.464158][ T7] usb_set_configuration+0x3872/0x3eb0 [ 137.469786][ T7] ? usb_set_configuration+0xa61/0x3eb0 [ 137.475496][ T7] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 137.481794][ T7] usb_generic_driver_probe+0x138/0x300 [ 137.487535][ T7] ? usb_choose_configuration+0xee0/0xee0 [ 137.493421][ T7] usb_probe_device+0x317/0x570 [ 137.498438][ T7] ? usb_register_device_driver+0x590/0x590 [ 137.504502][ T7] really_probe+0xe15/0x24d0 [ 137.509292][ T7] driver_probe_device+0x29d/0x3a0 [ 137.514596][ T7] __device_attach_driver+0x63f/0x830 [ 137.520165][ T7] bus_for_each_drv+0x2c8/0x3f0 [ 137.525195][ T7] ? deferred_probe_work_func+0x400/0x400 [ 137.531155][ T7] __device_attach+0x56a/0x890 [ 137.536118][ T7] device_initial_probe+0x4a/0x60 [ 137.541331][ T7] bus_probe_device+0x17e/0x3d0 [ 137.546365][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.552386][ T7] device_add+0x2c15/0x31d0 [ 137.557069][ T7] usb_new_device+0x1bd4/0x2a30 [ 137.562152][ T7] hub_event+0x5b99/0x8870 [ 137.566794][ T7] ? kmsan_get_metadata+0x116/0x180 [ 137.572187][ T7] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 137.579607][ T7] ? led_work+0x780/0x780 [ 137.584140][ T7] process_one_work+0x1219/0x1fe0 [ 137.589396][ T7] worker_thread+0x10ec/0x2340 [ 137.594380][ T7] kthread+0x521/0x560 [ 137.598800][ T7] ? process_one_work+0x1fe0/0x1fe0 [ 137.604245][ T7] ? kthread_blkcg+0x110/0x110 [ 137.609183][ T7] ret_from_fork+0x1f/0x30 [ 137.614486][ T7] Kernel Offset: disabled [ 137.618979][ T7] Rebooting in 86400 seconds..