Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 22.849985][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 23.210030][ T12] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 23.221198][ T12] usb 1-1: config 1 interface 1 altsetting 1 bulk endpoint 0x82 has invalid maxpacket 0 [ 23.230948][ T12] usb 1-1: config 1 interface 1 altsetting 1 bulk endpoint 0x3 has invalid maxpacket 0 [ 23.399995][ T12] usb 1-1: New USB device found, idVendor=0525, idProduct=a4a1, bcdDevice= 0.40 [ 23.409058][ T12] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 23.417120][ T12] usb 1-1: Product: syz [ 23.421300][ T12] usb 1-1: Manufacturer: syz [ 23.425870][ T12] usb 1-1: SerialNumber: syz [ 24.580042][ T12] cdc_ncm 1-1:1.0: MAC-Address: 42:42:42:42:42:42 [ 24.586551][ T12] cdc_ncm 1-1:1.0: dwNtbInMaxSize=0 is too small. Using 2048 [ 24.593970][ T12] cdc_ncm 1-1:1.0: setting rx_max = 2048 [ 24.789940][ T12] divide error: 0000 [#1] SMP KASAN [ 24.795194][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc7+ #0 [ 24.802533][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.812571][ T12] Workqueue: usb_hub_wq hub_event [ 24.817572][ T12] RIP: 0010:usbnet_update_max_qlen+0x231/0x370 [ 24.823702][ T12] Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 46 01 00 00 48 8d bb f4 00 00 00 31 d2 b8 c8 63 01 00 48 89 f9 <48> f7 b3 a8 01 00 00 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 0f [ 24.843277][ T12] RSP: 0018:ffff8881da20f010 EFLAGS: 00010246 [ 24.849319][ T12] RAX: 00000000000163c8 RBX: ffff8881d80bbdc0 RCX: ffff8881d80bbeb4 [ 24.857274][ T12] RDX: 0000000000000000 RSI: ffffffff8344ecde RDI: ffff8881d80bbeb4 [ 24.865235][ T12] RBP: 0000000000000003 R08: ffff8881da1f9800 R09: ffffed103b01766a [ 24.873182][ T12] R10: ffffed103b017669 R11: ffff8881d80bb34f R12: 0000000000000000 [ 24.881127][ T12] R13: ffff8881d80bbf38 R14: ffff8881d80bbdc0 R15: ffff8881d2e1f180 [ 24.889072][ T12] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 24.897973][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.904544][ T12] CR2: 00000000004c2968 CR3: 00000001d38c1000 CR4: 00000000001406f0 [ 24.912491][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.920435][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.928379][ T12] Call Trace: [ 24.931672][ T12] cdc_ncm_update_rxtx_max+0x8e9/0xef0 [ 24.937112][ T12] ? cdc_ncm_select_altsetting+0x1a0/0x1a0 [ 24.942888][ T12] cdc_ncm_bind_common+0x1005/0x2570 [ 24.948145][ T12] ? cdc_ncm_align_tail+0x1b0/0x1b0 [ 24.953316][ T12] ? __debug_object_init+0x47c/0xdd0 [ 24.958677][ T12] ? lockdep_init_map+0x1b0/0x5e0 [ 24.963683][ T12] cdc_ncm_bind+0x7c/0x1c0 [ 24.968070][ T12] ? cdc_ncm_bind_common+0x2570/0x2570 [ 24.973499][ T12] usbnet_probe+0xb43/0x23cf [ 24.978075][ T12] usb_probe_interface+0x305/0x7a0 [ 24.983156][ T12] ? usb_probe_device+0x100/0x100 [ 24.988165][ T12] really_probe+0x281/0x6d0 [ 24.992642][ T12] driver_probe_device+0x101/0x1b0 [ 24.997727][ T12] __device_attach_driver+0x1c2/0x220 [ 25.003070][ T12] ? driver_allows_async_probing+0x160/0x160 [ 25.009033][ T12] bus_for_each_drv+0x162/0x1e0 [ 25.013856][ T12] ? bus_rescan_devices+0x20/0x20 [ 25.018858][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 25.024650][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 25.029913][ T12] __device_attach+0x217/0x360 [ 25.034659][ T12] ? device_bind_driver+0xd0/0xd0 [ 25.039662][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 25.044917][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 25.050188][ T12] bus_probe_device+0x1e4/0x290 [ 25.056929][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 25.062814][ T12] device_add+0xae6/0x16f0 [ 25.067201][ T12] ? uevent_store+0x50/0x50 [ 25.071676][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 25.077452][ T12] usb_set_configuration+0xdf6/0x1670 [ 25.082812][ T12] generic_probe+0x9d/0xd5 [ 25.087199][ T12] usb_probe_device+0x99/0x100 [ 25.091935][ T12] ? usb_suspend+0x620/0x620 [ 25.096498][ T12] really_probe+0x281/0x6d0 [ 25.100978][ T12] driver_probe_device+0x101/0x1b0 [ 25.106083][ T12] __device_attach_driver+0x1c2/0x220 [ 25.111430][ T12] ? driver_allows_async_probing+0x160/0x160 [ 25.117379][ T12] bus_for_each_drv+0x162/0x1e0 [ 25.122202][ T12] ? bus_rescan_devices+0x20/0x20 [ 25.127198][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 25.132975][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 25.138230][ T12] __device_attach+0x217/0x360 [ 25.142965][ T12] ? device_bind_driver+0xd0/0xd0 [ 25.147973][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 25.153230][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 25.158485][ T12] bus_probe_device+0x1e4/0x290 [ 25.163307][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 25.169170][ T12] device_add+0xae6/0x16f0 [ 25.173555][ T12] ? uevent_store+0x50/0x50 [ 25.178043][ T12] usb_new_device.cold+0x6a4/0xe79 [ 25.183123][ T12] hub_event+0x1b5c/0x3640 [ 25.187509][ T12] ? hub_port_debounce+0x260/0x260 [ 25.192590][ T12] process_one_work+0x92b/0x1530 [ 25.197500][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 25.202842][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 25.207839][ T12] worker_thread+0x96/0xe20 [ 25.212345][ T12] ? process_one_work+0x1530/0x1530 [ 25.217512][ T12] kthread+0x318/0x420 [ 25.221568][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 25.226911][ T12] ret_from_fork+0x24/0x30 [ 25.231309][ T12] Modules linked in: [ 25.235273][ T12] ---[ end trace 4f39f1d606f60b2c ]--- [ 25.240758][ T12] RIP: 0010:usbnet_update_max_qlen+0x231/0x370 [ 25.246887][ T12] Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 46 01 00 00 48 8d bb f4 00 00 00 31 d2 b8 c8 63 01 00 48 89 f9 <48> f7 b3 a8 01 00 00 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 0f [ 25.266507][ T12] RSP: 0018:ffff8881da20f010 EFLAGS: 00010246 [ 25.272584][ T12] RAX: 00000000000163c8 RBX: ffff8881d80bbdc0 RCX: ffff8881d80bbeb4 [ 25.280552][ T12] RDX: 0000000000000000 RSI: ffffffff8344ecde RDI: ffff8881d80bbeb4 [ 25.288517][ T12] RBP: 0000000000000003 R08: ffff8881da1f9800 R09: ffffed103b01766a [ 25.296505][ T12] R10: ffffed103b017669 R11: ffff8881d80bb34f R12: 0000000000000000 [ 25.304479][ T12] R13: ffff8881d80bbf38 R14: ffff8881d80bbdc0 R15: ffff8881d2e1f180 [ 25.312456][ T12] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 25.321383][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.327941][ T12] CR2: 00000000004c2968 CR3: 00000001d38c1000 CR4: 00000000001406f0 [ 25.335917][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.343904][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.351879][ T12] Kernel panic - not syncing: Fatal exception [ 25.358508][ T12] Kernel Offset: disabled [ 25.362818][ T12] Rebooting in 86400 seconds..