[ 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 '10.128.0.88' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 151.013009][ T2078] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 151.383306][ T2078] usb 1-1: New USB device found, idVendor=09c0, idProduct=0201, bcdDevice=cc.5e [ 151.392600][ T2078] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 151.405166][ T2078] usb 1-1: config 0 descriptor?? [ 151.457383][ T2078] dvb-usb: found a 'Genpix 8PSK-to-USB2 Rev.1 DVB-S receiver' in warm state. executing program [ 151.663141][ T2078] gp8psk: usb in 128 operation failed. [ 151.668709][ T2078] ===================================================== [ 151.675704][ T2078] BUG: KMSAN: uninit-value in gp8psk_power_ctrl+0x4dc/0x1740 [ 151.683115][ T2078] CPU: 0 PID: 2078 Comm: kworker/0:2 Not tainted 5.10.0-rc4-syzkaller #0 [ 151.691537][ T2078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 151.701724][ T2078] Workqueue: usb_hub_wq hub_event [ 151.706775][ T2078] Call Trace: [ 151.710086][ T2078] dump_stack+0x21c/0x280 [ 151.714438][ T2078] kmsan_report+0xfb/0x1e0 [ 151.718881][ T2078] __msan_warning+0x5f/0xa0 [ 151.723422][ T2078] gp8psk_power_ctrl+0x4dc/0x1740 [ 151.728467][ T2078] ? __kmalloc+0x397/0x550 [ 151.732909][ T2078] ? gp8psk_frontend_attach+0x360/0x360 [ 151.738757][ T2078] dvb_usb_device_init+0x1700/0x3370 [ 151.744607][ T2078] gp8psk_usb_probe+0xa2/0x1a0 [ 151.750004][ T2078] ? vp702x_fe_refresh_state+0x580/0x580 [ 151.755676][ T2078] usb_probe_interface+0xfcc/0x1520 [ 151.760902][ T2078] ? usb_register_driver+0x900/0x900 [ 151.766207][ T2078] really_probe+0xebd/0x2420 [ 151.770807][ T2078] driver_probe_device+0x29d/0x3a0 [ 151.776198][ T2078] __device_attach_driver+0x63f/0x830 [ 151.781576][ T2078] bus_for_each_drv+0x2c8/0x3f0 [ 151.786453][ T2078] ? state_synced_show+0x130/0x130 [ 151.791569][ T2078] __device_attach+0x56a/0x890 [ 151.796517][ T2078] device_initial_probe+0x4a/0x60 [ 151.801562][ T2078] bus_probe_device+0x17e/0x3d0 [ 151.806425][ T2078] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.812234][ T2078] device_add+0x397e/0x3f00 [ 151.816736][ T2078] usb_set_configuration+0x39a2/0x4000 [ 151.822186][ T2078] ? usb_set_configuration+0xb11/0x4000 [ 151.827816][ T2078] ? usb_choose_configuration+0xc3f/0xee0 [ 151.833536][ T2078] usb_generic_driver_probe+0x138/0x300 [ 151.839091][ T2078] ? usb_choose_configuration+0xee0/0xee0 [ 151.844830][ T2078] usb_probe_device+0x317/0x570 [ 151.849729][ T2078] ? usb_register_device_driver+0x590/0x590 [ 151.855651][ T2078] really_probe+0xebd/0x2420 [ 151.860260][ T2078] driver_probe_device+0x29d/0x3a0 [ 151.865497][ T2078] __device_attach_driver+0x63f/0x830 [ 151.870883][ T2078] bus_for_each_drv+0x2c8/0x3f0 [ 151.875927][ T2078] ? state_synced_show+0x130/0x130 [ 151.881140][ T2078] __device_attach+0x56a/0x890 [ 151.885899][ T2078] device_initial_probe+0x4a/0x60 [ 151.890923][ T2078] bus_probe_device+0x17e/0x3d0 [ 151.896504][ T2078] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.902298][ T2078] device_add+0x397e/0x3f00 [ 151.906813][ T2078] usb_new_device+0x1bd4/0x2a30 [ 151.911656][ T2078] hub_event+0x5b99/0x8870 [ 151.916092][ T2078] ? kmsan_get_metadata+0x116/0x180 [ 151.921546][ T2078] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.927356][ T2078] ? led_work+0x780/0x780 [ 151.931691][ T2078] process_one_work+0x1219/0x1fe0 [ 151.936719][ T2078] worker_thread+0x123c/0x2730 [ 151.941488][ T2078] kthread+0x51c/0x560 [ 151.945559][ T2078] ? process_one_work+0x1fe0/0x1fe0 [ 151.950778][ T2078] ? kthread_blkcg+0x110/0x110 [ 151.955554][ T2078] ret_from_fork+0x1f/0x30 [ 151.959946][ T2078] [ 151.962263][ T2078] Local variable ----status@gp8psk_power_ctrl created at: [ 151.972318][ T2078] gp8psk_power_ctrl+0x62/0x1740 [ 151.977244][ T2078] gp8psk_power_ctrl+0x62/0x1740 [ 151.982160][ T2078] ===================================================== [ 151.989086][ T2078] Disabling lock debugging due to kernel taint [ 151.995261][ T2078] Kernel panic - not syncing: panic_on_warn set ... [ 152.001858][ T2078] CPU: 0 PID: 2078 Comm: kworker/0:2 Tainted: G B 5.10.0-rc4-syzkaller #0 [ 152.012163][ T2078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 152.023105][ T2078] Workqueue: usb_hub_wq hub_event [ 152.028127][ T2078] Call Trace: [ 152.031423][ T2078] dump_stack+0x21c/0x280 [ 152.035740][ T2078] panic+0x4c6/0xea7 [ 152.039626][ T2078] ? add_taint+0x17c/0x210 [ 152.044032][ T2078] kmsan_report+0x1de/0x1e0 [ 152.048534][ T2078] __msan_warning+0x5f/0xa0 [ 152.053056][ T2078] gp8psk_power_ctrl+0x4dc/0x1740 [ 152.058082][ T2078] ? __kmalloc+0x397/0x550 [ 152.062506][ T2078] ? gp8psk_frontend_attach+0x360/0x360 [ 152.068059][ T2078] dvb_usb_device_init+0x1700/0x3370 [ 152.073367][ T2078] gp8psk_usb_probe+0xa2/0x1a0 [ 152.078133][ T2078] ? vp702x_fe_refresh_state+0x580/0x580 [ 152.083769][ T2078] usb_probe_interface+0xfcc/0x1520 [ 152.089103][ T2078] ? usb_register_driver+0x900/0x900 [ 152.094813][ T2078] really_probe+0xebd/0x2420 [ 152.100719][ T2078] driver_probe_device+0x29d/0x3a0 [ 152.106008][ T2078] __device_attach_driver+0x63f/0x830 [ 152.111371][ T2078] bus_for_each_drv+0x2c8/0x3f0 [ 152.116211][ T2078] ? state_synced_show+0x130/0x130 [ 152.121309][ T2078] __device_attach+0x56a/0x890 [ 152.126066][ T2078] device_initial_probe+0x4a/0x60 [ 152.131098][ T2078] bus_probe_device+0x17e/0x3d0 [ 152.136070][ T2078] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 152.141916][ T2078] device_add+0x397e/0x3f00 [ 152.146428][ T2078] usb_set_configuration+0x39a2/0x4000 [ 152.151900][ T2078] ? usb_set_configuration+0xb11/0x4000 [ 152.157469][ T2078] ? usb_choose_configuration+0xc3f/0xee0 [ 152.163200][ T2078] usb_generic_driver_probe+0x138/0x300 [ 152.168764][ T2078] ? usb_choose_configuration+0xee0/0xee0 [ 152.174496][ T2078] usb_probe_device+0x317/0x570 [ 152.179796][ T2078] ? usb_register_device_driver+0x590/0x590 [ 152.185776][ T2078] really_probe+0xebd/0x2420 [ 152.190637][ T2078] driver_probe_device+0x29d/0x3a0 [ 152.195884][ T2078] __device_attach_driver+0x63f/0x830 [ 152.201272][ T2078] bus_for_each_drv+0x2c8/0x3f0 [ 152.206125][ T2078] ? state_synced_show+0x130/0x130 [ 152.211343][ T2078] __device_attach+0x56a/0x890 [ 152.216141][ T2078] device_initial_probe+0x4a/0x60 [ 152.221175][ T2078] bus_probe_device+0x17e/0x3d0 [ 152.226039][ T2078] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 152.232196][ T2078] device_add+0x397e/0x3f00 [ 152.236693][ T2078] usb_new_device+0x1bd4/0x2a30 [ 152.241539][ T2078] hub_event+0x5b99/0x8870 [ 152.245967][ T2078] ? kmsan_get_metadata+0x116/0x180 [ 152.251164][ T2078] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 152.256965][ T2078] ? led_work+0x780/0x780 [ 152.261280][ T2078] process_one_work+0x1219/0x1fe0 [ 152.266296][ T2078] worker_thread+0x123c/0x2730 [ 152.271046][ T2078] kthread+0x51c/0x560 [ 152.275115][ T2078] ? process_one_work+0x1fe0/0x1fe0 [ 152.280361][ T2078] ? kthread_blkcg+0x110/0x110 [ 152.285111][ T2078] ret_from_fork+0x1f/0x30 [ 152.290094][ T2078] Kernel Offset: disabled [ 152.294426][ T2078] Rebooting in 86400 seconds..