[ 48.259604] audit: type=1800 audit(1555099796.673:30): pid=5307 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.042144] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 74.282133] usb 1-1: Using ep0 maxpacket: 8 [ 74.442126] usb 1-1: unable to get BOS descriptor [ 74.522212] usb 1-1: config 0 has an invalid interface number: 117 but max is 0 [ 74.529817] usb 1-1: config 0 has no interface number 0 [ 74.535427] usb 1-1: New USB device found, idVendor=10cf, idProduct=8068, bcdDevice=e6.8d [ 74.543955] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 74.552907] usb 1-1: config 0 descriptor?? [ 74.597560] vmk80xx 1-1:0.117: driver 'vmk80xx' failed to auto-configure device. [ 74.605445] INFO: trying to register non-static key. [ 74.610554] the code is fine but needs lockdep annotation. [ 74.616156] turning off the locking correctness validator. [ 74.621762] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 [ 74.629854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.639218] Workqueue: usb_hub_wq hub_event [ 74.643579] Call Trace: [ 74.646171] dump_stack+0xe8/0x16e [ 74.649702] register_lock_class+0x11b8/0x1250 [ 74.654278] ? is_dynamic_key+0x1b0/0x1b0 [ 74.658413] ? graph_lock+0x80/0x180 [ 74.662113] __lock_acquire+0xfb/0x37c0 [ 74.666073] ? __lock_acquire+0x238b/0x37c0 [ 74.670383] ? mark_held_locks+0xe0/0xe0 [ 74.674432] ? mark_held_locks+0xe0/0xe0 [ 74.678574] lock_acquire+0x10d/0x2f0 [ 74.682364] ? down+0x12/0x80 [ 74.685476] _raw_spin_lock_irqsave+0x44/0x60 [ 74.690069] ? down+0x12/0x80 [ 74.693172] down+0x12/0x80 [ 74.696256] vmk80xx_detach+0x59/0x100 [ 74.700134] comedi_device_detach+0xed/0x800 [ 74.704595] comedi_device_cleanup.part.0+0x68/0x140 [ 74.709793] comedi_free_board_dev.part.0+0x16/0x90 [ 74.715066] comedi_release_hardware_device+0x111/0x140 [ 74.720481] comedi_auto_config.cold+0x124/0x1b0 [ 74.725233] usb_probe_interface+0x31d/0x820 [ 74.729757] ? usb_probe_device+0x150/0x150 [ 74.734075] really_probe+0x2da/0xb10 [ 74.737906] driver_probe_device+0x21d/0x350 [ 74.742309] __device_attach_driver+0x1d8/0x290 [ 74.747060] ? driver_allows_async_probing+0x160/0x160 [ 74.752385] bus_for_each_drv+0x163/0x1e0 [ 74.756564] ? bus_rescan_devices+0x30/0x30 [ 74.760881] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 74.765975] ? lockdep_hardirqs_on+0x37e/0x580 [ 74.770894] __device_attach+0x223/0x3a0 [ 74.774944] ? device_bind_driver+0xe0/0xe0 [ 74.779531] ? kobject_uevent_env+0x295/0x13d0 [ 74.784144] bus_probe_device+0x1f1/0x2a0 [ 74.788288] ? blocking_notifier_call_chain+0x59/0xb0 [ 74.793680] device_add+0xad2/0x16e0 [ 74.797836] ? get_device_parent.isra.0+0x560/0x560 [ 74.802844] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 74.808070] usb_set_configuration+0xdf7/0x1740 [ 74.812732] generic_probe+0xa2/0xda [ 74.816429] usb_probe_device+0xc0/0x150 [ 74.820472] ? usb_suspend+0x5f0/0x5f0 [ 74.824351] really_probe+0x2da/0xb10 [ 74.828201] driver_probe_device+0x21d/0x350 [ 74.832608] __device_attach_driver+0x1d8/0x290 [ 74.837347] ? driver_allows_async_probing+0x160/0x160 [ 74.842649] bus_for_each_drv+0x163/0x1e0 [ 74.846794] ? bus_rescan_devices+0x30/0x30 [ 74.851106] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 74.856204] ? lockdep_hardirqs_on+0x37e/0x580 [ 74.860809] __device_attach+0x223/0x3a0 [ 74.864948] ? device_bind_driver+0xe0/0xe0 [ 74.869286] ? kobject_uevent_env+0x295/0x13d0 [ 74.873867] bus_probe_device+0x1f1/0x2a0 [ 74.878197] ? blocking_notifier_call_chain+0x59/0xb0 [ 74.883379] device_add+0xad2/0x16e0 [ 74.887085] ? get_device_parent.isra.0+0x560/0x560 [ 74.892096] usb_new_device.cold+0x537/0xccf [ 74.896496] hub_event+0x138e/0x3b00 [ 74.900206] ? hub_port_debounce+0x350/0x350 [ 74.904607] ? _raw_spin_unlock_irq+0x29/0x40 [ 74.909178] process_one_work+0x90f/0x1580 [ 74.913404] ? wq_pool_ids_show+0x300/0x300 [ 74.917713] ? do_raw_spin_lock+0x11f/0x290 [ 74.922026] worker_thread+0x9b/0xe20 [ 74.925820] ? process_one_work+0x1580/0x1580 [ 74.930696] kthread+0x313/0x420 [ 74.934044] ? kthread_park+0x1a0/0x1a0 [ 74.938006] ret_from_fork+0x3a/0x50 [ 74.941712] kasan: CONFIG_KASAN_INLINE enabled [ 74.946280] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 74.953626] general protection fault: 0000 [#1] SMP KASAN PTI [ 74.959491] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 [ 74.967440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.976786] Workqueue: usb_hub_wq hub_event [ 74.981095] RIP: 0010:__list_add_valid+0x47/0xa0 [ 74.985835] Code: fa 48 c1 ea 03 80 3c 02 00 75 50 49 8b 54 24 08 48 39 f2 0f 85 59 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f2 48 c1 ea 03 <80> 3c 02 00 75 3a 48 8b 16 4c 39 e2 0f 85 5e 01 00 00 48 39 f5 0f [ 75.004809] RSP: 0018:ffff8880a84a7110 EFLAGS: 00010046 [ 75.010159] RAX: dffffc0000000000 RBX: ffff888097143850 RCX: 0000000000000000 [ 75.017415] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888097143898 [ 75.024666] RBP: ffff8880a84a7170 R08: ffff8880a8491880 R09: ffffed1015094e31 [ 75.031916] R10: ffffed1015094e30 R11: 0000000000000003 R12: ffff888097143890 [ 75.039183] R13: 0000000000000000 R14: ffff888097143898 R15: ffff888097143890 [ 75.046552] FS: 0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000 [ 75.054767] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.060793] CR2: 00007fe70ec4d000 CR3: 000000009a600000 CR4: 00000000001406f0 [ 75.068049] Call Trace: [ 75.070634] __down+0xa7/0x2c0 [ 75.073813] ? ww_mutex_lock+0xc0/0xc0 [ 75.077683] ? rwlock_bug.part.0+0x90/0x90 [ 75.081901] down+0x5c/0x80 [ 75.084818] vmk80xx_detach+0x59/0x100 [ 75.088700] comedi_device_detach+0xed/0x800 [ 75.093201] comedi_device_cleanup.part.0+0x68/0x140 [ 75.098866] comedi_free_board_dev.part.0+0x16/0x90 [ 75.103875] comedi_release_hardware_device+0x111/0x140 [ 75.109234] comedi_auto_config.cold+0x124/0x1b0 [ 75.114079] usb_probe_interface+0x31d/0x820 [ 75.118535] ? usb_probe_device+0x150/0x150 [ 75.122847] really_probe+0x2da/0xb10 [ 75.126637] driver_probe_device+0x21d/0x350 [ 75.131034] __device_attach_driver+0x1d8/0x290 [ 75.135700] ? driver_allows_async_probing+0x160/0x160 [ 75.140958] bus_for_each_drv+0x163/0x1e0 [ 75.145093] ? bus_rescan_devices+0x30/0x30 [ 75.149399] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 75.154541] ? lockdep_hardirqs_on+0x37e/0x580 [ 75.159116] __device_attach+0x223/0x3a0 [ 75.163165] ? device_bind_driver+0xe0/0xe0 [ 75.167477] ? kobject_uevent_env+0x295/0x13d0 [ 75.172059] bus_probe_device+0x1f1/0x2a0 [ 75.176200] ? blocking_notifier_call_chain+0x59/0xb0 [ 75.181374] device_add+0xad2/0x16e0 [ 75.185184] ? get_device_parent.isra.0+0x560/0x560 [ 75.190190] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 75.195287] usb_set_configuration+0xdf7/0x1740 [ 75.200028] generic_probe+0xa2/0xda [ 75.203747] usb_probe_device+0xc0/0x150 [ 75.207793] ? usb_suspend+0x5f0/0x5f0 [ 75.211661] really_probe+0x2da/0xb10 [ 75.215442] driver_probe_device+0x21d/0x350 [ 75.219832] __device_attach_driver+0x1d8/0x290 [ 75.224484] ? driver_allows_async_probing+0x160/0x160 [ 75.229749] bus_for_each_drv+0x163/0x1e0 [ 75.233886] ? bus_rescan_devices+0x30/0x30 [ 75.238234] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 75.243507] ? lockdep_hardirqs_on+0x37e/0x580 [ 75.248085] __device_attach+0x223/0x3a0 [ 75.252138] ? device_bind_driver+0xe0/0xe0 [ 75.256447] ? kobject_uevent_env+0x295/0x13d0 [ 75.261013] bus_probe_device+0x1f1/0x2a0 [ 75.265146] ? blocking_notifier_call_chain+0x59/0xb0 [ 75.270326] device_add+0xad2/0x16e0 [ 75.274090] ? get_device_parent.isra.0+0x560/0x560 [ 75.279103] usb_new_device.cold+0x537/0xccf [ 75.283598] hub_event+0x138e/0x3b00 [ 75.287303] ? hub_port_debounce+0x350/0x350 [ 75.291703] ? _raw_spin_unlock_irq+0x29/0x40 [ 75.296189] process_one_work+0x90f/0x1580 [ 75.300406] ? wq_pool_ids_show+0x300/0x300 [ 75.304712] ? do_raw_spin_lock+0x11f/0x290 [ 75.309014] worker_thread+0x9b/0xe20 [ 75.312797] ? process_one_work+0x1580/0x1580 [ 75.317382] kthread+0x313/0x420 [ 75.320782] ? kthread_park+0x1a0/0x1a0 [ 75.324746] ret_from_fork+0x3a/0x50 [ 75.328457] Modules linked in: [ 75.331644] ---[ end trace a32085c9f9945bfb ]--- [ 75.336386] RIP: 0010:__list_add_valid+0x47/0xa0 [ 75.341138] Code: fa 48 c1 ea 03 80 3c 02 00 75 50 49 8b 54 24 08 48 39 f2 0f 85 59 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f2 48 c1 ea 03 <80> 3c 02 00 75 3a 48 8b 16 4c 39 e2 0f 85 5e 01 00 00 48 39 f5 0f [ 75.360079] RSP: 0018:ffff8880a84a7110 EFLAGS: 00010046 [ 75.365518] RAX: dffffc0000000000 RBX: ffff888097143850 RCX: 0000000000000000 [ 75.372809] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888097143898 [ 75.380078] RBP: ffff8880a84a7170 R08: ffff8880a8491880 R09: ffffed1015094e31 [ 75.387335] R10: ffffed1015094e30 R11: 0000000000000003 R12: ffff888097143890 [ 75.394590] R13: 0000000000000000 R14: ffff888097143898 R15: ffff888097143890 [ 75.401843] FS: 0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000 [ 75.410151] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.416105] CR2: 00007fe70ec4d000 CR3: 000000009a600000 CR4: 00000000001406f0 [ 75.423463] Kernel panic - not syncing: Fatal exception [ 75.429834] Kernel Offset: disabled [ 75.433461] Rebooting in 86400 seconds..