[ 47.696615] audit: type=1800 audit(1555659456.415:27): pid=5253 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 47.696638] audit: type=1800 audit(1555659456.415:28): pid=5253 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 48.527607] audit: type=1800 audit(1555659457.275:29): pid=5253 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 48.548308] audit: type=1800 audit(1555659457.275:30): pid=5253 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 '10.128.1.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 58.571637] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 58.811600] usb 1-1: Using ep0 maxpacket: 8 [ 58.931837] usb 1-1: config 0 has an invalid interface number: 28 but max is 0 [ 58.939363] usb 1-1: config 0 has no interface number 0 [ 58.944900] usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=74.f9 [ 58.953295] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 58.962842] usb 1-1: config 0 descriptor?? [ 59.201730] usb 1-1: Failed to set alternative setting 3 for 217 interface: err=-22. [ 59.210096] DS9490R: probe of 1-1:0.28 failed with error -22 executing program [ 59.384729] usb 1-1: USB disconnect, device number 2 [ 59.761613] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 60.001703] usb 1-1: Using ep0 maxpacket: 8 [ 60.121648] usb 1-1: config 0 has an invalid interface number: 28 but max is 0 [ 60.129134] usb 1-1: config 0 has no interface number 0 [ 60.134654] usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=74.f9 [ 60.143029] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 60.151442] usb 1-1: config 0 descriptor?? [ 60.391678] usb 1-1: Failed to set alternative setting 3 for 194 interface: err=-22. [ 60.399753] DS9490R: probe of 1-1:0.28 failed with error -22 executing program [ 60.574045] usb 1-1: USB disconnect, device number 3 [ 60.931610] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 61.171628] usb 1-1: Using ep0 maxpacket: 8 [ 61.291676] usb 1-1: config 0 has an invalid interface number: 28 but max is 0 [ 61.299228] usb 1-1: config 0 has no interface number 0 [ 61.305200] usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=74.f9 [ 61.313624] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 61.321881] usb 1-1: config 0 descriptor?? [ 61.561711] usb 1-1: Failed to set alternative setting 3 for 0 interface: err=-22. [ 61.569536] DS9490R: probe of 1-1:0.28 failed with error -22 executing program [ 61.744011] usb 1-1: USB disconnect, device number 4 [ 62.101608] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 62.341633] usb 1-1: Using ep0 maxpacket: 8 [ 62.461670] usb 1-1: config 0 has an invalid interface number: 28 but max is 0 [ 62.469110] usb 1-1: config 0 has no interface number 0 [ 62.474620] usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=74.f9 [ 62.482996] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 62.491268] usb 1-1: config 0 descriptor?? [ 62.731859] ================================================================== [ 62.739382] BUG: KASAN: use-after-free in ds_probe+0x604/0x760 [ 62.745348] Read of size 1 at addr ffff888094825e62 by task kworker/0:1/12 [ 62.752352] [ 62.753990] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc5-319617-gd34f951 #4 [ 62.761955] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.771321] Workqueue: usb_hub_wq hub_event [ 62.775631] Call Trace: [ 62.778221] dump_stack+0xe8/0x16e [ 62.781753] ? ds_probe+0x604/0x760 [ 62.785370] ? ds_probe+0x604/0x760 [ 62.788992] print_address_description+0x6c/0x236 [ 62.793831] ? ds_probe+0x604/0x760 [ 62.797450] ? ds_probe+0x604/0x760 [ 62.801064] kasan_report.cold+0x1a/0x3c [ 62.805113] ? ds_probe+0x604/0x760 [ 62.808740] ds_probe+0x604/0x760 [ 62.812203] usb_probe_interface+0x31d/0x820 [ 62.816623] ? usb_probe_device+0x150/0x150 [ 62.820964] really_probe+0x2da/0xb10 [ 62.824759] driver_probe_device+0x21d/0x350 [ 62.829164] __device_attach_driver+0x1d8/0x290 [ 62.833843] ? driver_allows_async_probing+0x160/0x160 [ 62.839115] bus_for_each_drv+0x163/0x1e0 [ 62.843248] ? bus_rescan_devices+0x30/0x30 [ 62.847828] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 62.852923] ? lockdep_hardirqs_on+0x37e/0x580 [ 62.857502] __device_attach+0x223/0x3a0 [ 62.861566] ? device_bind_driver+0xe0/0xe0 [ 62.865880] ? kobject_uevent_env+0x295/0x13d0 [ 62.870456] bus_probe_device+0x1f1/0x2a0 [ 62.874598] ? blocking_notifier_call_chain+0x59/0xb0 [ 62.879794] device_add+0xad2/0x16e0 [ 62.883502] ? get_device_parent.isra.0+0x560/0x560 [ 62.888554] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 62.893832] usb_set_configuration+0xdf7/0x1740 [ 62.898504] generic_probe+0xa2/0xda [ 62.902226] usb_probe_device+0xc0/0x150 [ 62.906279] ? usb_suspend+0x5f0/0x5f0 [ 62.910228] really_probe+0x2da/0xb10 [ 62.914034] driver_probe_device+0x21d/0x350 [ 62.918444] __device_attach_driver+0x1d8/0x290 [ 62.923119] ? driver_allows_async_probing+0x160/0x160 [ 62.928405] bus_for_each_drv+0x163/0x1e0 [ 62.932562] ? bus_rescan_devices+0x30/0x30 [ 62.936903] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 62.942034] ? lockdep_hardirqs_on+0x37e/0x580 [ 62.946634] __device_attach+0x223/0x3a0 [ 62.950703] ? device_bind_driver+0xe0/0xe0 [ 62.955026] ? kobject_uevent_env+0x295/0x13d0 [ 62.959604] bus_probe_device+0x1f1/0x2a0 [ 62.963746] ? blocking_notifier_call_chain+0x59/0xb0 [ 62.968930] device_add+0xad2/0x16e0 [ 62.972640] ? get_device_parent.isra.0+0x560/0x560 [ 62.977658] usb_new_device.cold+0x537/0xccf [ 62.982065] hub_event+0x1398/0x3b00 [ 62.985792] ? hub_port_debounce+0x350/0x350 [ 62.990510] ? _raw_spin_unlock_irq+0x29/0x40 [ 62.995045] process_one_work+0x90f/0x1580 [ 62.999310] ? wq_pool_ids_show+0x300/0x300 [ 63.003632] ? do_raw_spin_lock+0x11f/0x290 [ 63.008120] worker_thread+0x9b/0xe20 [ 63.011922] ? process_one_work+0x1580/0x1580 [ 63.016411] kthread+0x313/0x420 [ 63.023295] ? kthread_park+0x1a0/0x1a0 [ 63.027652] ret_from_fork+0x3a/0x50 [ 63.031449] [ 63.033089] Allocated by task 3803: [ 63.036727] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 63.041659] security_task_alloc+0x113/0x180 [ 63.046057] copy_process.part.0+0x1c62/0x76b0 [ 63.050647] _do_fork+0x234/0xed0 [ 63.054096] do_syscall_64+0xcf/0x4f0 [ 63.058076] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 63.063346] [ 63.064978] Freed by task 3787: [ 63.068342] __kasan_slab_free+0x130/0x180 [ 63.072698] slab_free_freelist_hook+0x5e/0x140 [ 63.077363] kfree+0xce/0x280 [ 63.080463] security_task_free+0x9a/0xf0 [ 63.084608] __put_task_struct+0xec/0x4d0 [ 63.088758] delayed_put_task_struct+0x189/0x290 [ 63.093508] rcu_core+0x843/0x1a90 [ 63.097051] __do_softirq+0x22a/0x8cd [ 63.100851] [ 63.102501] The buggy address belongs to the object at ffff888094825e40 [ 63.102501] which belongs to the cache kmalloc-64 of size 64 [ 63.114996] The buggy address is located 34 bytes inside of [ 63.114996] 64-byte region [ffff888094825e40, ffff888094825e80) [ 63.126705] The buggy address belongs to the page: [ 63.131738] page:ffffea0002520940 count:1 mapcount:0 mapping:ffff88812c3f5600 index:0xffff888094825720 [ 63.141203] flags: 0xfff00000000200(slab) [ 63.146581] raw: 00fff00000000200 ffffea0002688600 0000000c0000000c ffff88812c3f5600 [ 63.156339] raw: ffff888094825720 00000000802a0029 00000001ffffffff 0000000000000000 [ 63.164351] page dumped because: kasan: bad access detected [ 63.170052] [ 63.171677] Memory state around the buggy address: [ 63.176647] ffff888094825d00: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc [ 63.184001] ffff888094825d80: fb fb fb fb fb fb fb fb fc fc fc fc 00 00 00 00 [ 63.191356] >ffff888094825e00: 00 00 fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 63.198704] ^ [ 63.205196] ffff888094825e80: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc [ 63.212559] ffff888094825f00: 00 00 00 00 00 fc fc fc fc fc fc fc fb fb fb fb [ 63.219904] ================================================================== [ 63.227265] Disabling lock debugging due to kernel taint [ 63.233005] Kernel panic - not syncing: panic_on_warn set ... [ 63.238926] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.1.0-rc5-319617-gd34f951 #4 [ 63.249542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.259675] Workqueue: usb_hub_wq hub_event [ 63.264092] Call Trace: [ 63.266718] dump_stack+0xe8/0x16e [ 63.270750] panic+0x29d/0x5f2 [ 63.274039] ? __warn_printk+0xf8/0xf8 [ 63.277934] ? retint_kernel+0x10/0x10 [ 63.281839] ? trace_hardirqs_on+0x55/0x1c0 [ 63.286786] ? ds_probe+0x604/0x760 [ 63.290519] end_report+0x48/0x4e [ 63.294000] ? ds_probe+0x604/0x760 [ 63.297644] kasan_report.cold+0xd/0x3c [ 63.301620] ? ds_probe+0x604/0x760 [ 63.305264] ds_probe+0x604/0x760 [ 63.308909] usb_probe_interface+0x31d/0x820 [ 63.313331] ? usb_probe_device+0x150/0x150 [ 63.317915] really_probe+0x2da/0xb10 [ 63.321729] driver_probe_device+0x21d/0x350 [ 63.326144] __device_attach_driver+0x1d8/0x290 [ 63.330815] ? driver_allows_async_probing+0x160/0x160 [ 63.336105] bus_for_each_drv+0x163/0x1e0 [ 63.340274] ? bus_rescan_devices+0x30/0x30 [ 63.344783] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 63.349899] ? lockdep_hardirqs_on+0x37e/0x580 [ 63.354498] __device_attach+0x223/0x3a0 [ 63.358680] ? device_bind_driver+0xe0/0xe0 [ 63.363108] ? kobject_uevent_env+0x295/0x13d0 [ 63.367693] bus_probe_device+0x1f1/0x2a0 [ 63.371852] ? blocking_notifier_call_chain+0x59/0xb0 [ 63.377056] device_add+0xad2/0x16e0 [ 63.380788] ? get_device_parent.isra.0+0x560/0x560 [ 63.385818] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 63.391292] usb_set_configuration+0xdf7/0x1740 [ 63.396509] generic_probe+0xa2/0xda [ 63.401882] usb_probe_device+0xc0/0x150 [ 63.405970] ? usb_suspend+0x5f0/0x5f0 [ 63.410040] really_probe+0x2da/0xb10 [ 63.413955] driver_probe_device+0x21d/0x350 [ 63.418381] __device_attach_driver+0x1d8/0x290 [ 63.423326] ? driver_allows_async_probing+0x160/0x160 [ 63.428613] bus_for_each_drv+0x163/0x1e0 [ 63.432952] ? bus_rescan_devices+0x30/0x30 [ 63.437289] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 63.442403] ? lockdep_hardirqs_on+0x37e/0x580 [ 63.446992] __device_attach+0x223/0x3a0 [ 63.451060] ? device_bind_driver+0xe0/0xe0 [ 63.455386] ? kobject_uevent_env+0x295/0x13d0 [ 63.459976] bus_probe_device+0x1f1/0x2a0 [ 63.464459] ? blocking_notifier_call_chain+0x59/0xb0 [ 63.469947] device_add+0xad2/0x16e0 [ 63.473849] ? get_device_parent.isra.0+0x560/0x560 [ 63.478878] usb_new_device.cold+0x537/0xccf [ 63.483306] hub_event+0x1398/0x3b00 [ 63.487030] ? hub_port_debounce+0x350/0x350 [ 63.491454] ? _raw_spin_unlock_irq+0x29/0x40 [ 63.495956] process_one_work+0x90f/0x1580 [ 63.500200] ? wq_pool_ids_show+0x300/0x300 [ 63.504541] ? do_raw_spin_lock+0x11f/0x290 [ 63.508871] worker_thread+0x9b/0xe20 [ 63.512679] ? process_one_work+0x1580/0x1580 [ 63.517197] kthread+0x313/0x420 [ 63.520563] ? kthread_park+0x1a0/0x1a0 [ 63.524545] ret_from_fork+0x3a/0x50 [ 63.528952] Kernel Offset: disabled [ 63.532581] Rebooting in 86400 seconds..