Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. executing program [ 44.729870][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 44.969826][ T12] usb 1-1: Using ep0 maxpacket: 32 [ 45.089921][ T12] usb 1-1: config 0 interface 0 altsetting 0 has a duplicate endpoint with address 0x2, skipping [ 45.100577][ T12] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 45.111026][ T12] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0xD has invalid maxpacket 16 [ 45.120773][ T12] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 45.131237][ T12] usb 1-1: config 0 interface 0 altsetting 0 has a duplicate endpoint with address 0x2, skipping [ 45.141755][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x7 has invalid maxpacket 512, setting to 64 [ 45.309905][ T12] usb 1-1: New USB device found, idVendor=174f, idProduct=8a31, bcdDevice=a4.fc [ 45.318939][ T12] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 45.326963][ T12] usb 1-1: Product: syz [ 45.331139][ T12] usb 1-1: Manufacturer: syz [ 45.335711][ T12] usb 1-1: SerialNumber: syz [ 45.341498][ T12] usb 1-1: config 0 descriptor?? [ 45.381378][ T12] uvcvideo: Found UVC 0.00 device syz (174f:8a31) [ 45.387861][ T12] ------------[ cut here ]------------ [ 45.393361][ T12] list_add double add: new=ffff8881cf81a010, prev=ffff8881cf81a010, next=ffff8881d44b0218. [ 45.403555][ T12] WARNING: CPU: 0 PID: 12 at lib/list_debug.c:29 __list_add_valid+0xb4/0xf0 [ 45.412242][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 45.418809][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.5.0-rc2-syzkaller #0 [ 45.426932][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.436974][ T12] Workqueue: usb_hub_wq hub_event [ 45.441972][ T12] Call Trace: [ 45.445236][ T12] dump_stack+0xef/0x16e [ 45.449451][ T12] ? __list_add_valid+0x40/0xf0 [ 45.454309][ T12] panic+0x2aa/0x6e1 [ 45.458179][ T12] ? add_taint.cold+0x16/0x16 [ 45.462877][ T12] ? __probe_kernel_read+0x188/0x1d0 [ 45.468152][ T12] ? __warn.cold+0x14/0x30 [ 45.472555][ T12] ? __warn+0xd5/0x1c8 [ 45.476602][ T12] ? __list_add_valid+0xb4/0xf0 [ 45.481432][ T12] __warn.cold+0x2f/0x30 [ 45.485689][ T12] ? __list_add_valid+0xb4/0xf0 [ 45.490520][ T12] report_bug+0x27b/0x2f0 [ 45.494831][ T12] do_error_trap+0x12b/0x1e0 [ 45.499484][ T12] ? __list_add_valid+0xb4/0xf0 [ 45.504315][ T12] do_invalid_op+0x32/0x40 [ 45.508705][ T12] ? __list_add_valid+0xb4/0xf0 [ 45.513531][ T12] invalid_op+0x23/0x30 [ 45.517660][ T12] RIP: 0010:__list_add_valid+0xb4/0xf0 [ 45.523091][ T12] Code: 48 c7 c7 60 f2 da 85 4c 89 e6 e8 0f d3 2b ff 0f 0b 31 c0 eb c5 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 e0 f2 da 85 e8 f4 d2 2b ff <0f> 0b 31 c0 eb aa 48 89 34 24 e8 cd 3c 7f ff 48 8b 34 24 e9 60 ff [ 45.542669][ T12] RSP: 0018:ffff8881da227080 EFLAGS: 00010286 [ 45.548710][ T12] RAX: 0000000000000000 RBX: ffff8881cf81a010 RCX: 0000000000000000 [ 45.556665][ T12] RDX: 0000000000000000 RSI: ffffffff81295dad RDI: ffffed103b444e02 [ 45.564611][ T12] RBP: ffff8881cf81a010 R08: ffff8881da211880 R09: ffffed103b646210 [ 45.572557][ T12] R10: ffffed103b64620f R11: ffff8881db23107f R12: ffff8881d44b0218 [ 45.580504][ T12] R13: ffff8881cf81a000 R14: dffffc0000000000 R15: ffff8881d44b0218 [ 45.588455][ T12] ? vprintk_func+0x7d/0x113 [ 45.593022][ T12] uvc_scan_chain_forward.isra.0+0x4df/0x637 [ 45.598973][ T12] uvc_probe.cold+0x1aee/0x29de [ 45.603942][ T12] ? mark_lock+0xbc/0x1160 [ 45.608333][ T12] ? mark_lock+0xbc/0x1160 [ 45.612738][ T12] ? mark_held_locks+0x9f/0xe0 [ 45.617494][ T12] ? usb_probe_interface+0x305/0x7a0 [ 45.622757][ T12] usb_probe_interface+0x305/0x7a0 [ 45.627843][ T12] ? usb_probe_device+0x100/0x100 [ 45.632841][ T12] really_probe+0x281/0x6d0 [ 45.637320][ T12] driver_probe_device+0x104/0x210 [ 45.642420][ T12] __device_attach_driver+0x1c2/0x220 [ 45.647766][ T12] ? driver_allows_async_probing+0x160/0x160 [ 45.653715][ T12] bus_for_each_drv+0x162/0x1e0 [ 45.658537][ T12] ? bus_rescan_devices+0x20/0x20 [ 45.663533][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 45.669312][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 45.674571][ T12] __device_attach+0x217/0x360 [ 45.679310][ T12] ? device_bind_driver+0xd0/0xd0 [ 45.684309][ T12] bus_probe_device+0x1e4/0x290 [ 45.689163][ T12] device_add+0x1480/0x1c20 [ 45.693639][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 45.698911][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 45.704958][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 45.710744][ T12] usb_set_configuration+0xe67/0x1740 [ 45.716244][ T12] generic_probe+0x9d/0xd5 [ 45.720642][ T12] usb_probe_device+0x99/0x100 [ 45.725427][ T12] ? usb_suspend+0x620/0x620 [ 45.729997][ T12] really_probe+0x281/0x6d0 [ 45.734575][ T12] driver_probe_device+0x104/0x210 [ 45.739661][ T12] __device_attach_driver+0x1c2/0x220 [ 45.745010][ T12] ? driver_allows_async_probing+0x160/0x160 [ 45.750965][ T12] bus_for_each_drv+0x162/0x1e0 [ 45.755820][ T12] ? bus_rescan_devices+0x20/0x20 [ 45.760816][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 45.766610][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 45.771888][ T12] __device_attach+0x217/0x360 [ 45.776643][ T12] ? device_bind_driver+0xd0/0xd0 [ 45.781646][ T12] bus_probe_device+0x1e4/0x290 [ 45.786473][ T12] device_add+0x1480/0x1c20 [ 45.790953][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 45.797041][ T12] usb_new_device.cold+0x6a4/0xe79 [ 45.802129][ T12] hub_event+0x1e59/0x3860 [ 45.806522][ T12] ? hub_port_debounce+0x260/0x260 [ 45.811610][ T12] ? find_held_lock+0x2d/0x110 [ 45.816349][ T12] ? mark_held_locks+0xe0/0xe0 [ 45.821111][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 45.826667][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 45.831927][ T12] process_one_work+0x92b/0x1530 [ 45.836839][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 45.842272][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 45.847269][ T12] worker_thread+0x96/0xe20 [ 45.851748][ T12] ? process_one_work+0x1530/0x1530 [ 45.856932][ T12] kthread+0x318/0x420 [ 45.860978][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 45.866325][ T12] ret_from_fork+0x24/0x30 [ 45.871478][ T12] Kernel Offset: disabled [ 45.875871][ T12] Rebooting in 86400 seconds..