[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 138.876873][ T4597] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 139.116794][ T4597] usb 1-1: Using ep0 maxpacket: 8 [ 139.237033][ T4597] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 139.247099][ T4597] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 52 [ 139.257151][ T4597] usb 1-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 139.437163][ T4597] usb 1-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 139.446284][ T4597] usb 1-1: New USB device strings: Mfr=1, Product=8, SerialNumber=3 [ 139.454575][ T4597] usb 1-1: Product: syz [ 139.459260][ T4597] usb 1-1: Manufacturer: syz [ 139.463912][ T4597] usb 1-1: SerialNumber: syz [ 139.489979][ T8467] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 139.497452][ T8467] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 139.509795][ T4597] smsc95xx v1.0.6 [ 139.716870][ T8467] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 139.723808][ T8467] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 139.967011][ T4597] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 139.977870][ T4597] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 140.236864][ T4597] ===================================================== [ 140.243834][ T4597] BUG: KMSAN: uninit-value in smsc95xx_reset+0x353/0x3eb0 [ 140.251620][ T4597] CPU: 0 PID: 4597 Comm: kworker/0:2 Not tainted 5.8.0-rc5-syzkaller #0 [ 140.259976][ T4597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 140.270070][ T4597] Workqueue: usb_hub_wq hub_event [ 140.275100][ T4597] Call Trace: [ 140.278377][ T4597] dump_stack+0x21c/0x280 [ 140.282709][ T4597] kmsan_report+0xf7/0x1e0 [ 140.287107][ T4597] __msan_warning+0x58/0xa0 [ 140.291606][ T4597] smsc95xx_reset+0x353/0x3eb0 [ 140.296356][ T4597] smsc95xx_bind+0x8b3/0x1720 [ 140.301011][ T4597] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 140.307145][ T4597] ? smsc95xx_mdio_write+0xcd0/0xcd0 [ 140.312408][ T4597] usbnet_probe+0x1152/0x3f90 [ 140.317076][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.322282][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.327501][ T4597] ? kmsan_set_origin_checked+0x95/0xf0 [ 140.333062][ T4597] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 140.339167][ T4597] ? usbnet_disconnect+0x670/0x670 [ 140.344364][ T4597] usb_probe_interface+0xece/0x1550 [ 140.349550][ T4597] ? usb_register_driver+0x900/0x900 [ 140.354812][ T4597] really_probe+0xf20/0x20b0 [ 140.359384][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.364578][ T4597] driver_probe_device+0x293/0x390 [ 140.369690][ T4597] __device_attach_driver+0x63f/0x830 [ 140.375042][ T4597] bus_for_each_drv+0x2ca/0x3f0 [ 140.379878][ T4597] ? coredump_store+0xf0/0xf0 [ 140.384535][ T4597] __device_attach+0x4e2/0x7f0 [ 140.389281][ T4597] device_initial_probe+0x4a/0x60 [ 140.394283][ T4597] bus_probe_device+0x177/0x3d0 [ 140.399130][ T4597] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.404912][ T4597] device_add+0x3b0e/0x40d0 [ 140.409403][ T4597] usb_set_configuration+0x380f/0x3f10 [ 140.414842][ T4597] ? usb_set_configuration+0xb41/0x3f10 [ 140.420478][ T4597] usb_generic_driver_probe+0x138/0x300 [ 140.426001][ T4597] ? usb_choose_configuration+0xe70/0xe70 [ 140.431715][ T4597] usb_probe_device+0x311/0x490 [ 140.436548][ T4597] ? usb_register_device_driver+0x540/0x540 [ 140.442418][ T4597] really_probe+0xf20/0x20b0 [ 140.447001][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.452179][ T4597] driver_probe_device+0x293/0x390 [ 140.457270][ T4597] __device_attach_driver+0x63f/0x830 [ 140.462623][ T4597] bus_for_each_drv+0x2ca/0x3f0 [ 140.467451][ T4597] ? coredump_store+0xf0/0xf0 [ 140.472113][ T4597] __device_attach+0x4e2/0x7f0 [ 140.476879][ T4597] device_initial_probe+0x4a/0x60 [ 140.481882][ T4597] bus_probe_device+0x177/0x3d0 [ 140.486713][ T4597] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.492510][ T4597] device_add+0x3b0e/0x40d0 [ 140.497000][ T4597] usb_new_device+0x1bd4/0x2a30 [ 140.501852][ T4597] hub_event+0x5e7b/0x8a70 [ 140.506277][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.511452][ T4597] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.517231][ T4597] ? led_work+0x7c0/0x7c0 [ 140.521537][ T4597] process_one_work+0x1688/0x2140 [ 140.526566][ T4597] worker_thread+0x10bc/0x2730 [ 140.531320][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.536502][ T4597] kthread+0x551/0x590 [ 140.540547][ T4597] ? process_one_work+0x2140/0x2140 [ 140.545721][ T4597] ? kthread_blkcg+0x110/0x110 [ 140.550461][ T4597] ret_from_fork+0x1f/0x30 [ 140.554854][ T4597] [ 140.557214][ T4597] Local variable ----buf.i.i265@smsc95xx_reset created at: [ 140.564432][ T4597] smsc95xx_reset+0x1ba/0x3eb0 [ 140.569179][ T4597] smsc95xx_reset+0x1ba/0x3eb0 [ 140.573916][ T4597] ===================================================== [ 140.580826][ T4597] Disabling lock debugging due to kernel taint [ 140.587000][ T4597] Kernel panic - not syncing: panic_on_warn set ... [ 140.593622][ T4597] CPU: 0 PID: 4597 Comm: kworker/0:2 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 140.603308][ T4597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 140.613352][ T4597] Workqueue: usb_hub_wq hub_event [ 140.618351][ T4597] Call Trace: [ 140.621643][ T4597] dump_stack+0x21c/0x280 [ 140.625969][ T4597] panic+0x4d7/0xef7 [ 140.629870][ T4597] ? add_taint+0x17c/0x210 [ 140.634269][ T4597] kmsan_report+0x1df/0x1e0 [ 140.638753][ T4597] __msan_warning+0x58/0xa0 [ 140.643295][ T4597] smsc95xx_reset+0x353/0x3eb0 [ 140.648176][ T4597] smsc95xx_bind+0x8b3/0x1720 [ 140.652854][ T4597] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 140.659065][ T4597] ? smsc95xx_mdio_write+0xcd0/0xcd0 [ 140.664339][ T4597] usbnet_probe+0x1152/0x3f90 [ 140.669124][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.674363][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.679594][ T4597] ? kmsan_set_origin_checked+0x95/0xf0 [ 140.685175][ T4597] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 140.691233][ T4597] ? usbnet_disconnect+0x670/0x670 [ 140.696347][ T4597] usb_probe_interface+0xece/0x1550 [ 140.701541][ T4597] ? usb_register_driver+0x900/0x900 [ 140.706827][ T4597] really_probe+0xf20/0x20b0 [ 140.711398][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.716586][ T4597] driver_probe_device+0x293/0x390 [ 140.721677][ T4597] __device_attach_driver+0x63f/0x830 [ 140.727032][ T4597] bus_for_each_drv+0x2ca/0x3f0 [ 140.731862][ T4597] ? coredump_store+0xf0/0xf0 [ 140.736534][ T4597] __device_attach+0x4e2/0x7f0 [ 140.741315][ T4597] device_initial_probe+0x4a/0x60 [ 140.746317][ T4597] bus_probe_device+0x177/0x3d0 [ 140.751184][ T4597] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.756967][ T4597] device_add+0x3b0e/0x40d0 [ 140.761472][ T4597] usb_set_configuration+0x380f/0x3f10 [ 140.766925][ T4597] ? usb_set_configuration+0xb41/0x3f10 [ 140.772473][ T4597] usb_generic_driver_probe+0x138/0x300 [ 140.778002][ T4597] ? usb_choose_configuration+0xe70/0xe70 [ 140.783737][ T4597] usb_probe_device+0x311/0x490 [ 140.788569][ T4597] ? usb_register_device_driver+0x540/0x540 [ 140.794440][ T4597] really_probe+0xf20/0x20b0 [ 140.799012][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.804194][ T4597] driver_probe_device+0x293/0x390 [ 140.809287][ T4597] __device_attach_driver+0x63f/0x830 [ 140.814654][ T4597] bus_for_each_drv+0x2ca/0x3f0 [ 140.819482][ T4597] ? coredump_store+0xf0/0xf0 [ 140.824153][ T4597] __device_attach+0x4e2/0x7f0 [ 140.828916][ T4597] device_initial_probe+0x4a/0x60 [ 140.833933][ T4597] bus_probe_device+0x177/0x3d0 [ 140.838763][ T4597] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.844543][ T4597] device_add+0x3b0e/0x40d0 [ 140.849036][ T4597] usb_new_device+0x1bd4/0x2a30 [ 140.853872][ T4597] hub_event+0x5e7b/0x8a70 [ 140.858284][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.863567][ T4597] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 140.869346][ T4597] ? led_work+0x7c0/0x7c0 [ 140.873667][ T4597] process_one_work+0x1688/0x2140 [ 140.878677][ T4597] worker_thread+0x10bc/0x2730 [ 140.883433][ T4597] ? kmsan_get_metadata+0x116/0x180 [ 140.888629][ T4597] kthread+0x551/0x590 [ 140.892674][ T4597] ? process_one_work+0x2140/0x2140 [ 140.897867][ T4597] ? kthread_blkcg+0x110/0x110 [ 140.902608][ T4597] ret_from_fork+0x1f/0x30 [ 140.908192][ T4597] Kernel Offset: disabled [ 140.912511][ T4597] Rebooting in 86400 seconds..