[ 47.946593] audit: type=1800 audit(1555591969.866:26): pid=5666 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [ 47.966215] audit: type=1800 audit(1555591969.866:27): pid=5666 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 47.966237] audit: type=1800 audit(1555591969.866:28): pid=5666 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. [ 48.774593] audit: type=1800 audit(1555591970.716:29): pid=5666 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.237' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 58.420366] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 58.660283] usb 1-1: Using ep0 maxpacket: 8 [ 58.780349] usb 1-1: config 0 has an invalid interface number: 28 but max is 0 [ 58.787862] usb 1-1: config 0 has no interface number 0 [ 58.793477] usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=74.f9 [ 58.801872] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 58.815967] usb 1-1: config 0 descriptor?? [ 59.060480] ================================================================== [ 59.068027] BUG: KASAN: slab-out-of-bounds in ds_probe+0x604/0x760 [ 59.074426] Read of size 1 at addr ffff88809fb50fe2 by task kworker/1:1/21 [ 59.082117] [ 59.083762] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.1.0-rc5-319617-gd34f951 #4 [ 59.094815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.104186] Workqueue: usb_hub_wq hub_event [ 59.108503] Call Trace: [ 59.111092] dump_stack+0xe8/0x16e [ 59.114626] ? ds_probe+0x604/0x760 [ 59.118250] ? ds_probe+0x604/0x760 [ 59.121883] print_address_description+0x6c/0x236 [ 59.126729] ? ds_probe+0x604/0x760 [ 59.130374] ? ds_probe+0x604/0x760 [ 59.134025] kasan_report.cold+0x1a/0x3c [ 59.138127] ? ds_probe+0x604/0x760 [ 59.141758] ds_probe+0x604/0x760 [ 59.145324] usb_probe_interface+0x31d/0x820 [ 59.149918] ? usb_probe_device+0x150/0x150 [ 59.154235] really_probe+0x2da/0xb10 [ 59.158047] driver_probe_device+0x21d/0x350 [ 59.162482] __device_attach_driver+0x1d8/0x290 [ 59.167154] ? driver_allows_async_probing+0x160/0x160 [ 59.172435] bus_for_each_drv+0x163/0x1e0 [ 59.176701] ? bus_rescan_devices+0x30/0x30 [ 59.181028] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 59.186140] ? lockdep_hardirqs_on+0x37e/0x580 [ 59.190732] __device_attach+0x223/0x3a0 [ 59.194916] ? device_bind_driver+0xe0/0xe0 [ 59.199277] ? kobject_uevent_env+0x295/0x13d0 [ 59.203894] bus_probe_device+0x1f1/0x2a0 [ 59.208051] ? blocking_notifier_call_chain+0x59/0xb0 [ 59.213245] device_add+0xad2/0x16e0 [ 59.216954] ? get_device_parent.isra.0+0x560/0x560 [ 59.221986] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 59.227096] usb_set_configuration+0xdf7/0x1740 [ 59.231801] generic_probe+0xa2/0xda [ 59.240505] usb_probe_device+0xc0/0x150 [ 59.244577] ? usb_suspend+0x5f0/0x5f0 [ 59.248489] really_probe+0x2da/0xb10 [ 59.252300] driver_probe_device+0x21d/0x350 [ 59.256737] __device_attach_driver+0x1d8/0x290 [ 59.261411] ? driver_allows_async_probing+0x160/0x160 [ 59.266773] bus_for_each_drv+0x163/0x1e0 [ 59.270926] ? bus_rescan_devices+0x30/0x30 [ 59.275242] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 59.280350] ? lockdep_hardirqs_on+0x37e/0x580 [ 59.284981] __device_attach+0x223/0x3a0 [ 59.289149] ? device_bind_driver+0xe0/0xe0 [ 59.293787] ? kobject_uevent_env+0x295/0x13d0 [ 59.298532] bus_probe_device+0x1f1/0x2a0 [ 59.302704] ? blocking_notifier_call_chain+0x59/0xb0 [ 59.307908] device_add+0xad2/0x16e0 [ 59.311636] ? get_device_parent.isra.0+0x560/0x560 [ 59.316681] usb_new_device.cold+0x537/0xccf [ 59.321092] hub_event+0x1398/0x3b00 [ 59.324832] ? hub_port_debounce+0x350/0x350 [ 59.329244] ? _raw_spin_unlock_irq+0x29/0x40 [ 59.333738] process_one_work+0x90f/0x1580 [ 59.338111] ? wq_pool_ids_show+0x300/0x300 [ 59.342450] ? do_raw_spin_lock+0x11f/0x290 [ 59.346776] worker_thread+0x9b/0xe20 [ 59.350941] ? process_one_work+0x1580/0x1580 [ 59.355437] kthread+0x313/0x420 [ 59.358820] ? kthread_park+0x1a0/0x1a0 [ 59.362788] ret_from_fork+0x3a/0x50 [ 59.366531] [ 59.368150] Allocated by task 21: [ 59.371613] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 59.376559] usb_get_configuration+0xc4c/0x32b0 [ 59.381328] usb_new_device+0x2fe/0x450 [ 59.385297] hub_event+0x1398/0x3b00 [ 59.389028] process_one_work+0x90f/0x1580 [ 59.393257] worker_thread+0x9b/0xe20 [ 59.397048] kthread+0x313/0x420 [ 59.400453] ret_from_fork+0x3a/0x50 [ 59.404175] [ 59.405790] Freed by task 4095: [ 59.409091] __kasan_slab_free+0x130/0x180 [ 59.413356] slab_free_freelist_hook+0x5e/0x140 [ 59.418032] kfree+0xce/0x280 [ 59.421125] security_task_free+0x9a/0xf0 [ 59.425266] __put_task_struct+0xec/0x4d0 [ 59.429440] delayed_put_task_struct+0x189/0x290 [ 59.434229] rcu_core+0x843/0x1a90 [ 59.437767] __do_softirq+0x22a/0x8cd [ 59.443589] [ 59.445213] The buggy address belongs to the object at ffff88809fb50f60 [ 59.445213] which belongs to the cache kmalloc-64 of size 64 [ 59.457695] The buggy address is located 66 bytes to the right of [ 59.457695] 64-byte region [ffff88809fb50f60, ffff88809fb50fa0) [ 59.470022] The buggy address belongs to the page: [ 59.474988] page:ffffea00027ed400 count:1 mapcount:0 mapping:ffff88812c3f5600 index:0xffff88809fb50de0 [ 59.484692] flags: 0xfff00000000200(slab) [ 59.488830] raw: 00fff00000000200 ffffea00027dbe80 0000001100000011 ffff88812c3f5600 [ 59.496800] raw: ffff88809fb50de0 00000000802a0028 00000001ffffffff 0000000000000000 [ 59.504680] page dumped because: kasan: bad access detected [ 59.510419] [ 59.512052] Memory state around the buggy address: [ 59.517162] ffff88809fb50e80: fc fc fc fc 00 00 00 00 00 00 fc fc fc fc fc fc [ 59.524519] ffff88809fb50f00: fb fb fb fb fb fb fb fb fc fc fc fc 00 00 00 00 [ 59.531967] >ffff88809fb50f80: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 59.539340] ^ [ 59.545832] ffff88809fb51000: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fb fb [ 59.553186] ffff88809fb51080: fb fb fb fb fb fb fb fb fc fc fc fc fb fb fb fb [ 59.560558] ================================================================== [ 59.567950] Disabling lock debugging due to kernel taint [ 59.573541] Kernel panic - not syncing: panic_on_warn set ... [ 59.579484] CPU: 1 PID: 21 Comm: kworker/1:1 Tainted: G B 5.1.0-rc5-319617-gd34f951 #4 [ 59.588842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.598217] Workqueue: usb_hub_wq hub_event [ 59.602540] Call Trace: [ 59.605140] dump_stack+0xe8/0x16e [ 59.608685] panic+0x29d/0x5f2 [ 59.611877] ? __warn_printk+0xf8/0xf8 [ 59.615763] ? retint_kernel+0x10/0x10 [ 59.619659] ? trace_hardirqs_on+0x55/0x1c0 [ 59.623982] ? ds_probe+0x604/0x760 [ 59.627666] end_report+0x48/0x4e [ 59.631141] ? ds_probe+0x604/0x760 [ 59.634883] kasan_report.cold+0xd/0x3c [ 59.638853] ? ds_probe+0x604/0x760 [ 59.642475] ds_probe+0x604/0x760 [ 59.645931] usb_probe_interface+0x31d/0x820 [ 59.650344] ? usb_probe_device+0x150/0x150 [ 59.654673] really_probe+0x2da/0xb10 [ 59.658480] driver_probe_device+0x21d/0x350 [ 59.662909] __device_attach_driver+0x1d8/0x290 [ 59.667592] ? driver_allows_async_probing+0x160/0x160 [ 59.672878] bus_for_each_drv+0x163/0x1e0 [ 59.677048] ? bus_rescan_devices+0x30/0x30 [ 59.681383] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 59.686513] ? lockdep_hardirqs_on+0x37e/0x580 [ 59.691099] __device_attach+0x223/0x3a0 [ 59.695158] ? device_bind_driver+0xe0/0xe0 [ 59.699490] ? kobject_uevent_env+0x295/0x13d0 [ 59.704075] bus_probe_device+0x1f1/0x2a0 [ 59.708248] ? blocking_notifier_call_chain+0x59/0xb0 [ 59.713447] device_add+0xad2/0x16e0 [ 59.717175] ? get_device_parent.isra.0+0x560/0x560 [ 59.722206] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 59.727325] usb_set_configuration+0xdf7/0x1740 [ 59.732030] generic_probe+0xa2/0xda [ 59.735755] usb_probe_device+0xc0/0x150 [ 59.739827] ? usb_suspend+0x5f0/0x5f0 [ 59.743740] really_probe+0x2da/0xb10 [ 59.747547] driver_probe_device+0x21d/0x350 [ 59.751967] __device_attach_driver+0x1d8/0x290 [ 59.756653] ? driver_allows_async_probing+0x160/0x160 [ 59.761958] bus_for_each_drv+0x163/0x1e0 [ 59.766126] ? bus_rescan_devices+0x30/0x30 [ 59.770455] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 59.775574] ? lockdep_hardirqs_on+0x37e/0x580 [ 59.780183] __device_attach+0x223/0x3a0 [ 59.784247] ? device_bind_driver+0xe0/0xe0 [ 59.788576] ? kobject_uevent_env+0x295/0x13d0 [ 59.793160] bus_probe_device+0x1f1/0x2a0 [ 59.797314] ? blocking_notifier_call_chain+0x59/0xb0 [ 59.802511] device_add+0xad2/0x16e0 [ 59.806233] ? get_device_parent.isra.0+0x560/0x560 [ 59.811270] usb_new_device.cold+0x537/0xccf [ 59.815679] hub_event+0x1398/0x3b00 [ 59.819405] ? hub_port_debounce+0x350/0x350 [ 59.823822] ? _raw_spin_unlock_irq+0x29/0x40 [ 59.828317] process_one_work+0x90f/0x1580 [ 59.832565] ? wq_pool_ids_show+0x300/0x300 [ 59.836903] ? do_raw_spin_lock+0x11f/0x290 [ 59.841235] worker_thread+0x9b/0xe20 [ 59.845048] ? process_one_work+0x1580/0x1580 [ 59.849540] kthread+0x313/0x420 [ 59.852928] ? kthread_park+0x1a0/0x1a0 [ 59.856931] ret_from_fork+0x3a/0x50 [ 59.861564] Kernel Offset: disabled [ 59.865235] Rebooting in 86400 seconds..