forked to background, child pid 3048 no interfaces have a carrier [ 64.346603][ T3049] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.368651][ T3049] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 88.651917][ T3157] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 88.891968][ T3157] usb 1-1: Using ep0 maxpacket: 8 [ 89.012116][ T3157] usb 1-1: config 0 has an invalid interface number: 202 but max is 0 [ 89.020435][ T3157] usb 1-1: config 0 has no interface number 0 [ 89.027077][ T3157] usb 1-1: New USB device found, idVendor=13d3, idProduct=3306, bcdDevice= 5.81 [ 89.036329][ T3157] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 89.047695][ T3157] usb 1-1: config 0 descriptor?? [ 89.098249][ T3157] r8712u: register rtl8712_netdev_ops to netdev_ops [ 89.104984][ T3157] usb 1-1: r8712u: USB_SPEED_HIGH with 0 endpoints executing program [ 89.332143][ T3157] ===================================================== [ 89.339260][ T3157] BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 [ 89.345610][ T3157] string+0x4ec/0x6f0 [ 89.349671][ T3157] vsnprintf+0x2222/0x3650 [ 89.354099][ T3157] pointer+0x1844/0x2060 [ 89.358353][ T3157] vsnprintf+0x1a9b/0x3650 [ 89.362810][ T3157] vprintk_store+0x537/0x2150 [ 89.367513][ T3157] vprintk_emit+0x25c/0x950 [ 89.372034][ T3157] dev_vprintk_emit+0x5ef/0x6d0 [ 89.376922][ T3157] dev_printk_emit+0x1dd/0x21f [ 89.381712][ T3157] __dev_printk+0x3be/0x440 [ 89.386240][ T3157] _dev_info+0x1ea/0x22f [ 89.390503][ T3157] r871xu_drv_init+0x1929/0x3070 [ 89.395471][ T3157] usb_probe_interface+0xf19/0x1600 [ 89.400695][ T3157] really_probe+0x653/0x14b0 [ 89.405300][ T3157] __driver_probe_device+0x3e9/0x530 [ 89.410605][ T3157] __device_attach_driver+0x79f/0x1120 [ 89.416084][ T3157] bus_for_each_drv+0x2d6/0x3f0 [ 89.420947][ T3157] __device_attach+0x593/0x8e0 [ 89.425734][ T3157] device_initial_probe+0x4a/0x60 [ 89.430773][ T3157] bus_probe_device+0x17b/0x3e0 [ 89.435633][ T3157] device_add+0x1fff/0x26e0 [ 89.440152][ T3157] usb_set_configuration+0x37e9/0x3ed0 [ 89.445634][ T3157] usb_generic_driver_probe+0x13c/0x300 [ 89.451201][ T3157] usb_probe_device+0x309/0x570 [ 89.456091][ T3157] really_probe+0x653/0x14b0 [ 89.460697][ T3157] __driver_probe_device+0x3e9/0x530 [ 89.466001][ T3157] __device_attach_driver+0x79f/0x1120 [ 89.471477][ T3157] bus_for_each_drv+0x2d6/0x3f0 [ 89.476342][ T3157] __device_attach+0x593/0x8e0 [ 89.481117][ T3157] device_initial_probe+0x4a/0x60 [ 89.486153][ T3157] bus_probe_device+0x17b/0x3e0 [ 89.491029][ T3157] device_add+0x1fff/0x26e0 [ 89.495552][ T3157] usb_new_device+0x1b8e/0x2950 [ 89.500413][ T3157] hub_event+0x58e3/0x89e0 [ 89.504837][ T3157] process_one_work+0xdb6/0x1820 [ 89.509784][ T3157] worker_thread+0x10b3/0x21e0 [ 89.514553][ T3157] kthread+0x3c7/0x500 [ 89.518636][ T3157] ret_from_fork+0x1f/0x30 [ 89.523070][ T3157] [ 89.525398][ T3157] Local variable data created at: [ 89.530424][ T3157] usb_read8+0x5d/0x130 [ 89.534594][ T3157] r8712_read8+0xa5/0xd0 [ 89.538847][ T3157] [ 89.541159][ T3157] CPU: 0 PID: 3157 Comm: kworker/0:3 Not tainted 5.17.0-syzkaller #0 [ 89.549234][ T3157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.559339][ T3157] Workqueue: usb_hub_wq hub_event [ 89.564404][ T3157] ===================================================== [ 89.571333][ T3157] Disabling lock debugging due to kernel taint [ 89.577473][ T3157] Kernel panic - not syncing: kmsan.panic set ... [ 89.583878][ T3157] CPU: 0 PID: 3157 Comm: kworker/0:3 Tainted: G B 5.17.0-syzkaller #0 [ 89.593354][ T3157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.603414][ T3157] Workqueue: usb_hub_wq hub_event [ 89.608458][ T3157] Call Trace: [ 89.611739][ T3157] [ 89.614696][ T3157] dump_stack_lvl+0x1ff/0x28e [ 89.619439][ T3157] dump_stack+0x25/0x28 [ 89.623642][ T3157] panic+0x487/0xe1f [ 89.627562][ T3157] ? add_taint+0x181/0x210 [ 89.632008][ T3157] ? _raw_spin_unlock_irqrestore+0x78/0xb0 [ 89.637836][ T3157] kmsan_report+0x2e6/0x2f0 [ 89.642374][ T3157] ? __msan_warning+0xb8/0x130 [ 89.647160][ T3157] ? string+0x4ec/0x6f0 [ 89.651336][ T3157] ? vsnprintf+0x2222/0x3650 [ 89.655953][ T3157] ? pointer+0x1844/0x2060 [ 89.660395][ T3157] ? vsnprintf+0x1a9b/0x3650 [ 89.664994][ T3157] ? vprintk_store+0x537/0x2150 [ 89.669955][ T3157] ? vprintk_emit+0x25c/0x950 [ 89.674661][ T3157] ? dev_vprintk_emit+0x5ef/0x6d0 [ 89.679732][ T3157] ? dev_printk_emit+0x1dd/0x21f [ 89.684688][ T3157] ? __dev_printk+0x3be/0x440 [ 89.689373][ T3157] ? _dev_info+0x1ea/0x22f [ 89.693811][ T3157] ? r871xu_drv_init+0x1929/0x3070 [ 89.698960][ T3157] ? usb_probe_interface+0xf19/0x1600 [ 89.704362][ T3157] ? really_probe+0x653/0x14b0 [ 89.709158][ T3157] ? __driver_probe_device+0x3e9/0x530 [ 89.714643][ T3157] ? __device_attach_driver+0x79f/0x1120 [ 89.720319][ T3157] ? bus_for_each_drv+0x2d6/0x3f0 [ 89.725362][ T3157] ? __device_attach+0x593/0x8e0 [ 89.730321][ T3157] ? device_initial_probe+0x4a/0x60 [ 89.735548][ T3157] ? bus_probe_device+0x17b/0x3e0 [ 89.740583][ T3157] ? device_add+0x1fff/0x26e0 [ 89.745290][ T3157] ? usb_set_configuration+0x37e9/0x3ed0 [ 89.750954][ T3157] ? usb_generic_driver_probe+0x13c/0x300 [ 89.756696][ T3157] ? usb_probe_device+0x309/0x570 [ 89.761746][ T3157] ? really_probe+0x653/0x14b0 [ 89.766556][ T3157] ? __driver_probe_device+0x3e9/0x530 [ 89.772049][ T3157] ? __device_attach_driver+0x79f/0x1120 [ 89.777702][ T3157] ? bus_for_each_drv+0x2d6/0x3f0 [ 89.782741][ T3157] ? __device_attach+0x593/0x8e0 [ 89.787694][ T3157] ? device_initial_probe+0x4a/0x60 [ 89.792915][ T3157] ? bus_probe_device+0x17b/0x3e0 [ 89.797964][ T3157] ? device_add+0x1fff/0x26e0 [ 89.802662][ T3157] ? usb_new_device+0x1b8e/0x2950 [ 89.807701][ T3157] ? hub_event+0x58e3/0x89e0 [ 89.812312][ T3157] ? process_one_work+0xdb6/0x1820 [ 89.817444][ T3157] ? worker_thread+0x10b3/0x21e0 [ 89.822391][ T3157] ? kthread+0x3c7/0x500 [ 89.826655][ T3157] ? ret_from_fork+0x1f/0x30 [ 89.831286][ T3157] ? stack_trace_save+0x43/0x60 [ 89.836190][ T3157] ? __stack_depot_save+0x21/0x4d0 [ 89.841331][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 89.846470][ T3157] ? kmsan_internal_set_shadow_origin+0x5e/0xc0 [ 89.852744][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 89.857882][ T3157] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 89.863719][ T3157] __msan_warning+0xb8/0x130 [ 89.868340][ T3157] string+0x4ec/0x6f0 [ 89.872351][ T3157] vsnprintf+0x2222/0x3650 [ 89.876830][ T3157] pointer+0x1844/0x2060 [ 89.881094][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 89.886244][ T3157] vsnprintf+0x1a9b/0x3650 [ 89.890693][ T3157] vprintk_store+0x537/0x2150 [ 89.895402][ T3157] ? vsnprintf+0x355b/0x3650 [ 89.900025][ T3157] ? snprintf+0x24a/0x290 [ 89.904381][ T3157] vprintk_emit+0x25c/0x950 [ 89.908943][ T3157] dev_vprintk_emit+0x5ef/0x6d0 [ 89.913859][ T3157] dev_printk_emit+0x1dd/0x21f [ 89.918668][ T3157] __dev_printk+0x3be/0x440 [ 89.923195][ T3157] _dev_info+0x1ea/0x22f [ 89.927928][ T3157] ? usb_read8+0xe7/0x130 [ 89.932275][ T3157] ? r871xu_drv_init+0x185e/0x3070 [ 89.937408][ T3157] ? r8712_read8+0xa5/0xd0 [ 89.941850][ T3157] r871xu_drv_init+0x1929/0x3070 [ 89.946828][ T3157] ? __pm_runtime_set_status+0x1aed/0x1e40 [ 89.952665][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 89.957806][ T3157] ? r871x_dev_unload+0x310/0x310 [ 89.962848][ T3157] ? r871x_dev_unload+0x310/0x310 [ 89.967895][ T3157] usb_probe_interface+0xf19/0x1600 [ 89.973138][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 89.978286][ T3157] ? usb_register_driver+0x900/0x900 [ 89.983621][ T3157] really_probe+0x653/0x14b0 [ 89.988239][ T3157] __driver_probe_device+0x3e9/0x530 [ 89.993548][ T3157] __device_attach_driver+0x79f/0x1120 [ 89.999059][ T3157] bus_for_each_drv+0x2d6/0x3f0 [ 90.003934][ T3157] ? deferred_probe_work_func+0x4c0/0x4c0 [ 90.009685][ T3157] __device_attach+0x593/0x8e0 [ 90.014467][ T3157] ? btf_decl_tag_check_meta+0x6c1/0x770 [ 90.020122][ T3157] device_initial_probe+0x4a/0x60 [ 90.025176][ T3157] bus_probe_device+0x17b/0x3e0 [ 90.030057][ T3157] device_add+0x1fff/0x26e0 [ 90.034595][ T3157] usb_set_configuration+0x37e9/0x3ed0 [ 90.040086][ T3157] ? usb_set_configuration+0xb61/0x3ed0 [ 90.045664][ T3157] ? usb_choose_configuration+0xcbb/0xf90 [ 90.051432][ T3157] usb_generic_driver_probe+0x13c/0x300 [ 90.057005][ T3157] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 90.062848][ T3157] ? usb_choose_configuration+0xf90/0xf90 [ 90.068598][ T3157] usb_probe_device+0x309/0x570 [ 90.073473][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 90.078616][ T3157] ? usb_register_device_driver+0x580/0x580 [ 90.084536][ T3157] really_probe+0x653/0x14b0 [ 90.089156][ T3157] __driver_probe_device+0x3e9/0x530 [ 90.094469][ T3157] __device_attach_driver+0x79f/0x1120 [ 90.099955][ T3157] bus_for_each_drv+0x2d6/0x3f0 [ 90.104817][ T3157] ? deferred_probe_work_func+0x4c0/0x4c0 [ 90.110566][ T3157] __device_attach+0x593/0x8e0 [ 90.115352][ T3157] ? btf_decl_tag_check_meta+0x6c1/0x770 [ 90.121009][ T3157] device_initial_probe+0x4a/0x60 [ 90.126056][ T3157] bus_probe_device+0x17b/0x3e0 [ 90.130930][ T3157] device_add+0x1fff/0x26e0 [ 90.135471][ T3157] usb_new_device+0x1b8e/0x2950 [ 90.140349][ T3157] hub_event+0x58e3/0x89e0 [ 90.149605][ T3157] ? kmsan_get_metadata+0x33/0x220 [ 90.154746][ T3157] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 90.160581][ T3157] ? led_work+0x7b0/0x7b0 [ 90.164938][ T3157] process_one_work+0xdb6/0x1820 [ 90.169906][ T3157] worker_thread+0x10b3/0x21e0 [ 90.174700][ T3157] kthread+0x3c7/0x500 [ 90.178805][ T3157] ? worker_clr_flags+0x370/0x370 [ 90.183861][ T3157] ? kthread_blkcg+0x120/0x120 [ 90.188650][ T3157] ret_from_fork+0x1f/0x30 [ 90.193092][ T3157] [ 90.196290][ T3157] Kernel Offset: disabled [ 90.200618][ T3157] Rebooting in 86400 seconds..