forked to background, child pid 3048 no interfaces have a carrier [ 63.771812][ T3049] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.814451][ T3049] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.175' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 87.702785][ T7] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 88.073121][ T7] usb 1-1: config 0 has an invalid interface number: 73 but max is 0 [ 88.081384][ T7] usb 1-1: config 0 has no interface number 0 [ 88.088077][ T7] usb 1-1: config 0 interface 73 altsetting 0 bulk endpoint 0xC has invalid maxpacket 32 [ 88.098292][ T7] usb 1-1: New USB device found, idVendor=7392, idProduct=7612, bcdDevice=d6.37 [ 88.107721][ T7] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 88.118658][ T7] usb 1-1: config 0 descriptor?? [ 88.145950][ T3470] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 88.168903][ T7] r8712u: register rtl8712_netdev_ops to netdev_ops [ 88.175717][ T7] usb 1-1: r8712u: USB_SPEED_HIGH with 2 endpoints executing program [ 88.413026][ T7] ===================================================== [ 88.420069][ T7] BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 [ 88.426414][ T7] string+0x4ec/0x6f0 [ 88.430519][ T7] vsnprintf+0x2222/0x3650 [ 88.434958][ T7] pointer+0x1844/0x2060 [ 88.439217][ T7] vsnprintf+0x1a9b/0x3650 [ 88.443653][ T7] vprintk_store+0x537/0x2150 [ 88.448362][ T7] vprintk_emit+0x25c/0x950 [ 88.452903][ T7] dev_vprintk_emit+0x5ef/0x6d0 [ 88.457783][ T7] dev_printk_emit+0x1dd/0x21f [ 88.462589][ T7] __dev_printk+0x3be/0x440 [ 88.467145][ T7] _dev_info+0x1ea/0x22f [ 88.471407][ T7] r871xu_drv_init+0x1929/0x3070 [ 88.476393][ T7] usb_probe_interface+0xf19/0x1600 [ 88.481622][ T7] really_probe+0x653/0x14b0 [ 88.486248][ T7] __driver_probe_device+0x3e9/0x530 [ 88.491557][ T7] __device_attach_driver+0x79f/0x1120 [ 88.497043][ T7] bus_for_each_drv+0x2d6/0x3f0 [ 88.502011][ T7] __device_attach+0x593/0x8e0 [ 88.506818][ T7] device_initial_probe+0x4a/0x60 [ 88.513168][ T7] bus_probe_device+0x17b/0x3e0 [ 88.518042][ T7] device_add+0x1fff/0x26e0 [ 88.522575][ T7] usb_set_configuration+0x37e9/0x3ed0 [ 88.528083][ T7] usb_generic_driver_probe+0x13c/0x300 [ 88.533652][ T7] usb_probe_device+0x309/0x570 [ 88.538554][ T7] really_probe+0x653/0x14b0 [ 88.543187][ T7] __driver_probe_device+0x3e9/0x530 [ 88.548494][ T7] __device_attach_driver+0x79f/0x1120 [ 88.553983][ T7] bus_for_each_drv+0x2d6/0x3f0 [ 88.558846][ T7] __device_attach+0x593/0x8e0 [ 88.563625][ T7] device_initial_probe+0x4a/0x60 [ 88.568771][ T7] bus_probe_device+0x17b/0x3e0 [ 88.573633][ T7] device_add+0x1fff/0x26e0 [ 88.578161][ T7] usb_new_device+0x1b8e/0x2950 [ 88.583021][ T7] hub_event+0x58e3/0x89e0 [ 88.587451][ T7] process_one_work+0xdb6/0x1820 [ 88.592412][ T7] worker_thread+0x10b3/0x21e0 [ 88.597190][ T7] kthread+0x3c7/0x500 [ 88.601278][ T7] ret_from_fork+0x1f/0x30 [ 88.605718][ T7] [ 88.608052][ T7] Local variable data created at: [ 88.613064][ T7] usb_read8+0x5d/0x130 [ 88.617234][ T7] r8712_read8+0xa5/0xd0 [ 88.621512][ T7] [ 88.623830][ T7] CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.17.0-rc4-syzkaller #0 [ 88.631993][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.642055][ T7] Workqueue: usb_hub_wq hub_event [ 88.647114][ T7] ===================================================== [ 88.654040][ T7] Disabling lock debugging due to kernel taint [ 88.660212][ T7] Kernel panic - not syncing: kmsan.panic set ... [ 88.666625][ T7] CPU: 0 PID: 7 Comm: kworker/0:1 Tainted: G B 5.17.0-rc4-syzkaller #0 [ 88.676207][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.686679][ T7] Workqueue: usb_hub_wq hub_event [ 88.691730][ T7] Call Trace: [ 88.695009][ T7] [ 88.697948][ T7] dump_stack_lvl+0x1ff/0x28e [ 88.702699][ T7] dump_stack+0x25/0x28 [ 88.706906][ T7] panic+0x487/0xe1f [ 88.710925][ T7] ? add_taint+0x181/0x210 [ 88.715403][ T7] ? _raw_spin_unlock_irqrestore+0x78/0xb0 [ 88.721248][ T7] kmsan_report+0x2e6/0x2f0 [ 88.725805][ T7] ? __msan_warning+0xb8/0x130 [ 88.730599][ T7] ? string+0x4ec/0x6f0 [ 88.734771][ T7] ? vsnprintf+0x2222/0x3650 [ 88.739376][ T7] ? pointer+0x1844/0x2060 [ 88.743807][ T7] ? vsnprintf+0x1a9b/0x3650 [ 88.748434][ T7] ? vprintk_store+0x537/0x2150 [ 88.753326][ T7] ? vprintk_emit+0x25c/0x950 [ 88.758043][ T7] ? dev_vprintk_emit+0x5ef/0x6d0 [ 88.763106][ T7] ? dev_printk_emit+0x1dd/0x21f [ 88.768076][ T7] ? __dev_printk+0x3be/0x440 [ 88.772782][ T7] ? _dev_info+0x1ea/0x22f [ 88.777225][ T7] ? r871xu_drv_init+0x1929/0x3070 [ 88.782382][ T7] ? usb_probe_interface+0xf19/0x1600 [ 88.787795][ T7] ? really_probe+0x653/0x14b0 [ 88.792590][ T7] ? __driver_probe_device+0x3e9/0x530 [ 88.798099][ T7] ? __device_attach_driver+0x79f/0x1120 [ 88.803764][ T7] ? bus_for_each_drv+0x2d6/0x3f0 [ 88.808817][ T7] ? __device_attach+0x593/0x8e0 [ 88.813773][ T7] ? device_initial_probe+0x4a/0x60 [ 88.818995][ T7] ? bus_probe_device+0x17b/0x3e0 [ 88.824055][ T7] ? device_add+0x1fff/0x26e0 [ 88.828755][ T7] ? usb_set_configuration+0x37e9/0x3ed0 [ 88.834431][ T7] ? usb_generic_driver_probe+0x13c/0x300 [ 88.840190][ T7] ? usb_probe_device+0x309/0x570 [ 88.845243][ T7] ? really_probe+0x653/0x14b0 [ 88.850031][ T7] ? __driver_probe_device+0x3e9/0x530 [ 88.855512][ T7] ? __device_attach_driver+0x79f/0x1120 [ 88.861167][ T7] ? bus_for_each_drv+0x2d6/0x3f0 [ 88.866209][ T7] ? __device_attach+0x593/0x8e0 [ 88.871171][ T7] ? device_initial_probe+0x4a/0x60 [ 88.876412][ T7] ? bus_probe_device+0x17b/0x3e0 [ 88.881451][ T7] ? device_add+0x1fff/0x26e0 [ 88.886152][ T7] ? usb_new_device+0x1b8e/0x2950 [ 88.891191][ T7] ? hub_event+0x58e3/0x89e0 [ 88.895797][ T7] ? process_one_work+0xdb6/0x1820 [ 88.900921][ T7] ? worker_thread+0x10b3/0x21e0 [ 88.905869][ T7] ? kthread+0x3c7/0x500 [ 88.910144][ T7] ? ret_from_fork+0x1f/0x30 [ 88.914754][ T7] ? stack_trace_save+0x43/0x60 [ 88.919628][ T7] ? __stack_depot_save+0x21/0x4d0 [ 88.924770][ T7] ? kmsan_get_metadata+0x33/0x220 [ 88.929945][ T7] ? kmsan_internal_set_shadow_origin+0x5e/0xc0 [ 88.936219][ T7] ? kmsan_get_metadata+0x33/0x220 [ 88.941385][ T7] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 88.947229][ T7] __msan_warning+0xb8/0x130 [ 88.951854][ T7] string+0x4ec/0x6f0 [ 88.955854][ T7] vsnprintf+0x2222/0x3650 [ 88.960324][ T7] pointer+0x1844/0x2060 [ 88.964585][ T7] ? kmsan_get_metadata+0x33/0x220 [ 88.969732][ T7] vsnprintf+0x1a9b/0x3650 [ 88.974194][ T7] vprintk_store+0x537/0x2150 [ 88.978899][ T7] ? vsnprintf+0x355b/0x3650 [ 88.983517][ T7] ? snprintf+0x24a/0x290 [ 88.987869][ T7] vprintk_emit+0x25c/0x950 [ 88.992419][ T7] dev_vprintk_emit+0x5ef/0x6d0 [ 88.997311][ T7] dev_printk_emit+0x1dd/0x21f [ 89.002119][ T7] __dev_printk+0x3be/0x440 [ 89.006658][ T7] _dev_info+0x1ea/0x22f [ 89.010938][ T7] ? usb_read8+0xe7/0x130 [ 89.015307][ T7] ? r871xu_drv_init+0x185e/0x3070 [ 89.020449][ T7] ? r8712_read8+0xa5/0xd0 [ 89.024913][ T7] r871xu_drv_init+0x1929/0x3070 [ 89.029907][ T7] ? __pm_runtime_set_status+0x1aed/0x1e40 [ 89.035769][ T7] ? kmsan_get_metadata+0x33/0x220 [ 89.040921][ T7] ? r871x_dev_unload+0x310/0x310 [ 89.045971][ T7] ? r871x_dev_unload+0x310/0x310 [ 89.051044][ T7] usb_probe_interface+0xf19/0x1600 [ 89.056301][ T7] ? kmsan_get_metadata+0x33/0x220 [ 89.061450][ T7] ? usb_register_driver+0x900/0x900 [ 89.066804][ T7] really_probe+0x653/0x14b0 [ 89.071430][ T7] __driver_probe_device+0x3e9/0x530 [ 89.076747][ T7] __device_attach_driver+0x79f/0x1120 [ 89.082277][ T7] bus_for_each_drv+0x2d6/0x3f0 [ 89.087165][ T7] ? deferred_probe_work_func+0x4c0/0x4c0 [ 89.092921][ T7] __device_attach+0x593/0x8e0 [ 89.097711][ T7] ? btf_func_check_meta+0x1a1/0x8d0 [ 89.103020][ T7] device_initial_probe+0x4a/0x60 [ 89.108084][ T7] bus_probe_device+0x17b/0x3e0 [ 89.112980][ T7] device_add+0x1fff/0x26e0 [ 89.117525][ T7] usb_set_configuration+0x37e9/0x3ed0 [ 89.123026][ T7] ? usb_set_configuration+0xb11/0x3ed0 [ 89.128635][ T7] usb_generic_driver_probe+0x13c/0x300 [ 89.134229][ T7] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 89.140105][ T7] ? usb_choose_configuration+0xf90/0xf90 [ 89.145853][ T7] usb_probe_device+0x309/0x570 [ 89.150850][ T7] ? kmsan_get_metadata+0x33/0x220 [ 89.156042][ T7] ? usb_register_device_driver+0x580/0x580 [ 89.161991][ T7] really_probe+0x653/0x14b0 [ 89.166617][ T7] __driver_probe_device+0x3e9/0x530 [ 89.171953][ T7] __device_attach_driver+0x79f/0x1120 [ 89.177468][ T7] bus_for_each_drv+0x2d6/0x3f0 [ 89.182731][ T7] ? deferred_probe_work_func+0x4c0/0x4c0 [ 89.188850][ T7] __device_attach+0x593/0x8e0 [ 89.193703][ T7] ? btf_func_check_meta+0x1a1/0x8d0 [ 89.199023][ T7] device_initial_probe+0x4a/0x60 [ 89.204080][ T7] bus_probe_device+0x17b/0x3e0 [ 89.208995][ T7] device_add+0x1fff/0x26e0 [ 89.213539][ T7] usb_new_device+0x1b8e/0x2950 [ 89.218428][ T7] hub_event+0x58e3/0x89e0 [ 89.222911][ T7] ? kmsan_get_metadata+0x33/0x220 [ 89.228072][ T7] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 89.233949][ T7] ? led_work+0x7b0/0x7b0 [ 89.238328][ T7] process_one_work+0xdb6/0x1820 [ 89.243400][ T7] worker_thread+0x10b3/0x21e0 [ 89.248226][ T7] kthread+0x3c7/0x500 [ 89.252333][ T7] ? worker_clr_flags+0x370/0x370 [ 89.257391][ T7] ? kthread_blkcg+0x120/0x120 [ 89.262225][ T7] ret_from_fork+0x1f/0x30 [ 89.266684][ T7] [ 89.269903][ T7] Kernel Offset: disabled [ 89.274250][ T7] Rebooting in 86400 seconds..