[ 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 Warning: Permanently added '10.128.0.107' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 150.953893][ T55] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 151.203495][ T55] usb 1-1: Using ep0 maxpacket: 32 [ 151.323911][ T55] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 1023 [ 151.334082][ T55] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 8 [ 151.344120][ T55] usb 1-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 151.513931][ T55] usb 1-1: New USB device found, idVendor=0424, idProduct=7505, bcdDevice= 0.40 [ 151.523071][ T55] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 151.531459][ T55] usb 1-1: Product: syz [ 151.535907][ T55] usb 1-1: Manufacturer: syz [ 151.540597][ T55] usb 1-1: SerialNumber: syz [ 151.577176][ T8279] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 151.587130][ T8279] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 151.816949][ T8279] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 151.825212][ T8279] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 152.274030][ T55] cdc_ether: probe of 1-1:1.0 failed with error -22 [ 152.281079][ T55] smsc75xx v1.0.0 [ 152.474131][ T8279] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 152.481092][ T8279] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 152.703631][ T55] ===================================================== [ 152.710631][ T55] BUG: KMSAN: uninit-value in smsc75xx_bind+0x576/0x13f0 [ 152.717653][ T55] CPU: 1 PID: 55 Comm: kworker/1:2 Not tainted 5.10.0-rc4-syzkaller #0 [ 152.725869][ T55] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 152.735929][ T55] Workqueue: usb_hub_wq hub_event [ 152.740952][ T55] Call Trace: [ 152.744245][ T55] dump_stack+0x21c/0x280 [ 152.748577][ T55] kmsan_report+0xf7/0x1e0 [ 152.753000][ T55] __msan_warning+0x5f/0xa0 [ 152.757505][ T55] smsc75xx_bind+0x576/0x13f0 [ 152.762174][ T55] ? smsc75xx_write_wuff+0xa60/0xa60 [ 152.767544][ T55] usbnet_probe+0x1169/0x3e90 [ 152.772219][ T55] ? kmsan_internal_set_origin+0x85/0xc0 [ 152.777840][ T55] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 152.783896][ T55] ? usbnet_disconnect+0x670/0x670 [ 152.789013][ T55] usb_probe_interface+0xfcc/0x1520 [ 152.794214][ T55] ? usb_register_driver+0x900/0x900 [ 152.799502][ T55] really_probe+0xebd/0x2420 [ 152.804085][ T55] driver_probe_device+0x293/0x390 [ 152.809184][ T55] __device_attach_driver+0x63f/0x830 [ 152.815512][ T55] bus_for_each_drv+0x2ca/0x3f0 [ 152.820354][ T55] ? state_synced_show+0x130/0x130 [ 152.825450][ T55] __device_attach+0x538/0x860 [ 152.830209][ T55] device_initial_probe+0x4a/0x60 [ 152.835229][ T55] bus_probe_device+0x177/0x3d0 [ 152.840079][ T55] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 152.845869][ T55] device_add+0x399e/0x3f20 [ 152.850376][ T55] usb_set_configuration+0x39cf/0x4010 [ 152.855823][ T55] ? usb_set_configuration+0xa61/0x4010 [ 152.861360][ T55] ? kmsan_get_shadow_origin_ptr+0x50/0xb0 [ 152.867165][ T55] usb_generic_driver_probe+0x138/0x300 [ 152.872705][ T55] ? usb_choose_configuration+0xf00/0xf00 [ 152.878406][ T55] usb_probe_device+0x317/0x570 [ 152.883261][ T55] ? usb_register_device_driver+0x590/0x590 [ 152.889152][ T55] really_probe+0xebd/0x2420 [ 152.893727][ T55] driver_probe_device+0x293/0x390 [ 152.898833][ T55] __device_attach_driver+0x63f/0x830 [ 152.904208][ T55] bus_for_each_drv+0x2ca/0x3f0 [ 152.909602][ T55] ? state_synced_show+0x130/0x130 [ 152.914731][ T55] __device_attach+0x538/0x860 [ 152.919507][ T55] device_initial_probe+0x4a/0x60 [ 152.924585][ T55] bus_probe_device+0x177/0x3d0 [ 152.929449][ T55] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 152.935271][ T55] device_add+0x399e/0x3f20 [ 152.939789][ T55] usb_new_device+0x1bd6/0x2a30 [ 152.944658][ T55] hub_event+0x5bc9/0x8890 [ 152.949141][ T55] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 152.955230][ T55] ? kmsan_get_metadata+0x116/0x180 [ 152.960436][ T55] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 152.966252][ T55] ? led_work+0x780/0x780 [ 152.970580][ T55] process_one_work+0x121c/0x1fc0 [ 152.975592][ T55] worker_thread+0x10cc/0x2740 [ 152.980349][ T55] ? kmsan_get_metadata+0x116/0x180 [ 152.985560][ T55] kthread+0x51c/0x560 [ 152.989624][ T55] ? process_one_work+0x1fc0/0x1fc0 [ 152.994820][ T55] ? kthread_blkcg+0x110/0x110 [ 152.999586][ T55] ret_from_fork+0x1f/0x30 [ 153.003979][ T55] [ 153.006291][ T55] Local variable ----buf.i91@smsc75xx_bind created at: [ 153.013252][ T55] smsc75xx_bind+0x435/0x13f0 [ 153.017942][ T55] smsc75xx_bind+0x435/0x13f0 [ 153.022592][ T55] ===================================================== [ 153.029505][ T55] Disabling lock debugging due to kernel taint [ 153.035656][ T55] Kernel panic - not syncing: panic_on_warn set ... [ 153.042232][ T55] CPU: 1 PID: 55 Comm: kworker/1:2 Tainted: G B 5.10.0-rc4-syzkaller #0 [ 153.051838][ T55] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.061887][ T55] Workqueue: usb_hub_wq hub_event [ 153.066929][ T55] Call Trace: [ 153.070219][ T55] dump_stack+0x21c/0x280 [ 153.074535][ T55] panic+0x4c8/0xea7 [ 153.078414][ T55] ? add_taint+0x17c/0x210 [ 153.082820][ T55] kmsan_report+0x1da/0x1e0 [ 153.087317][ T55] __msan_warning+0x5f/0xa0 [ 153.091814][ T55] smsc75xx_bind+0x576/0x13f0 [ 153.096493][ T55] ? smsc75xx_write_wuff+0xa60/0xa60 [ 153.101769][ T55] usbnet_probe+0x1169/0x3e90 [ 153.106433][ T55] ? kmsan_internal_set_origin+0x85/0xc0 [ 153.112483][ T55] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 153.118532][ T55] ? usbnet_disconnect+0x670/0x670 [ 153.123638][ T55] usb_probe_interface+0xfcc/0x1520 [ 153.128824][ T55] ? usb_register_driver+0x900/0x900 [ 153.134090][ T55] really_probe+0xebd/0x2420 [ 153.138678][ T55] driver_probe_device+0x293/0x390 [ 153.143777][ T55] __device_attach_driver+0x63f/0x830 [ 153.149154][ T55] bus_for_each_drv+0x2ca/0x3f0 [ 153.153996][ T55] ? state_synced_show+0x130/0x130 [ 153.159122][ T55] __device_attach+0x538/0x860 [ 153.163885][ T55] device_initial_probe+0x4a/0x60 [ 153.168919][ T55] bus_probe_device+0x177/0x3d0 [ 153.173764][ T55] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.179574][ T55] device_add+0x399e/0x3f20 [ 153.184074][ T55] usb_set_configuration+0x39cf/0x4010 [ 153.189535][ T55] ? usb_set_configuration+0xa61/0x4010 [ 153.195083][ T55] ? kmsan_get_shadow_origin_ptr+0x50/0xb0 [ 153.200902][ T55] usb_generic_driver_probe+0x138/0x300 [ 153.206446][ T55] ? usb_choose_configuration+0xf00/0xf00 [ 153.212294][ T55] usb_probe_device+0x317/0x570 [ 153.217155][ T55] ? usb_register_device_driver+0x590/0x590 [ 153.223062][ T55] really_probe+0xebd/0x2420 [ 153.227665][ T55] driver_probe_device+0x293/0x390 [ 153.232771][ T55] __device_attach_driver+0x63f/0x830 [ 153.238156][ T55] bus_for_each_drv+0x2ca/0x3f0 [ 153.242999][ T55] ? state_synced_show+0x130/0x130 [ 153.248103][ T55] __device_attach+0x538/0x860 [ 153.254939][ T55] device_initial_probe+0x4a/0x60 [ 153.259948][ T55] bus_probe_device+0x177/0x3d0 [ 153.264784][ T55] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.270583][ T55] device_add+0x399e/0x3f20 [ 153.275072][ T55] usb_new_device+0x1bd6/0x2a30 [ 153.279907][ T55] hub_event+0x5bc9/0x8890 [ 153.284342][ T55] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 153.290408][ T55] ? kmsan_get_metadata+0x116/0x180 [ 153.295591][ T55] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.301392][ T55] ? led_work+0x780/0x780 [ 153.305715][ T55] process_one_work+0x121c/0x1fc0 [ 153.310724][ T55] worker_thread+0x10cc/0x2740 [ 153.315469][ T55] ? kmsan_get_metadata+0x116/0x180 [ 153.320648][ T55] kthread+0x51c/0x560 [ 153.324698][ T55] ? process_one_work+0x1fc0/0x1fc0 [ 153.329874][ T55] ? kthread_blkcg+0x110/0x110 [ 153.334638][ T55] ret_from_fork+0x1f/0x30 [ 153.339108][ T55] Kernel Offset: disabled [ 153.343426][ T55] Rebooting in 86400 seconds..