[ 49.721291] audit: type=1800 audit(1555404641.711:26): pid=5419 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [ 49.741095] audit: type=1800 audit(1555404641.711:27): pid=5419 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 49.741118] audit: type=1800 audit(1555404641.711:28): pid=5419 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. [ 50.754904] audit: type=1800 audit(1555404642.761:29): pid=5419 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 '10.128.0.130' (ECDSA) to the list of known hosts. syzkaller login: [ 59.834207] IPVS: ftp: loaded support on port[0] = 21 [ 59.911706] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.918170] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.925349] device bridge_slave_0 entered promiscuous mode [ 59.932737] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.939140] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.946112] device bridge_slave_1 entered promiscuous mode [ 59.961144] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 59.970063] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 59.985878] team0: Port device team_slave_0 added [ 59.992046] team0: Port device team_slave_1 added [ 60.016397] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.023012] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.030071] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.036432] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.067373] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.080035] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.089326] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.096331] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.104698] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 60.115575] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.125212] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.133055] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.139424] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.149271] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.156907] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.163329] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.180518] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.188583] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.196926] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.206926] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.217396] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 60.266798] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.557712] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 60.827713] usb 1-1: Using ep0 maxpacket: 8 [ 60.948015] usb 1-1: config 0 has an invalid interface number: 157 but max is 0 [ 60.955645] usb 1-1: config 0 has no interface number 0 [ 60.961465] usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=f5.2f [ 60.969880] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 60.979081] usb 1-1: config 0 descriptor?? [ 61.218302] ================================================================== [ 61.225845] BUG: KASAN: use-after-free in ds_probe+0x604/0x760 [ 61.231839] Read of size 1 at addr ffff888218c33862 by task kworker/1:3/535 [ 61.238930] [ 61.240549] CPU: 1 PID: 535 Comm: kworker/1:3 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 [ 61.248593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.257954] Workqueue: usb_hub_wq hub_event [ 61.262283] Call Trace: [ 61.264890] dump_stack+0xe8/0x16e [ 61.268421] ? ds_probe+0x604/0x760 [ 61.272195] ? ds_probe+0x604/0x760 [ 61.275814] print_address_description+0x6c/0x236 [ 61.280654] ? ds_probe+0x604/0x760 [ 61.284277] ? ds_probe+0x604/0x760 [ 61.287891] kasan_report.cold+0x1a/0x3c [ 61.291947] ? ds_probe+0x604/0x760 [ 61.295580] ds_probe+0x604/0x760 [ 61.299054] usb_probe_interface+0x31d/0x820 [ 61.303481] ? usb_probe_device+0x150/0x150 [ 61.307818] really_probe+0x2da/0xb10 [ 61.311636] driver_probe_device+0x21d/0x350 [ 61.316056] __device_attach_driver+0x1d8/0x290 [ 61.320733] ? driver_allows_async_probing+0x160/0x160 [ 61.326015] bus_for_each_drv+0x163/0x1e0 [ 61.330177] ? bus_rescan_devices+0x30/0x30 [ 61.334497] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 61.339601] ? lockdep_hardirqs_on+0x37e/0x580 [ 61.344182] __device_attach+0x223/0x3a0 [ 61.348242] ? device_bind_driver+0xe0/0xe0 [ 61.352574] ? kobject_uevent_env+0x295/0x13d0 [ 61.357167] bus_probe_device+0x1f1/0x2a0 [ 61.361308] ? blocking_notifier_call_chain+0x59/0xb0 [ 61.366489] device_add+0xad2/0x16e0 [ 61.370206] ? get_device_parent.isra.0+0x560/0x560 [ 61.375221] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 61.380343] usb_set_configuration+0xdf7/0x1740 [ 61.385028] generic_probe+0xa2/0xda [ 61.388745] usb_probe_device+0xc0/0x150 [ 61.392823] ? usb_suspend+0x5f0/0x5f0 [ 61.396709] really_probe+0x2da/0xb10 [ 61.400504] driver_probe_device+0x21d/0x350 [ 61.404909] __device_attach_driver+0x1d8/0x290 [ 61.409574] ? driver_allows_async_probing+0x160/0x160 [ 61.414853] bus_for_each_drv+0x163/0x1e0 [ 61.418999] ? bus_rescan_devices+0x30/0x30 [ 61.423361] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 61.428474] ? lockdep_hardirqs_on+0x37e/0x580 [ 61.433051] __device_attach+0x223/0x3a0 [ 61.437114] ? device_bind_driver+0xe0/0xe0 [ 61.441427] ? kobject_uevent_env+0x295/0x13d0 [ 61.446013] bus_probe_device+0x1f1/0x2a0 [ 61.450195] ? blocking_notifier_call_chain+0x59/0xb0 [ 61.455388] device_add+0xad2/0x16e0 [ 61.459270] ? get_device_parent.isra.0+0x560/0x560 [ 61.464309] usb_new_device.cold+0x537/0xccf [ 61.468718] hub_event+0x138e/0x3b00 [ 61.472425] ? hub_port_debounce+0x350/0x350 [ 61.476834] ? _raw_spin_unlock_irq+0x29/0x40 [ 61.481341] process_one_work+0x90f/0x1580 [ 61.485570] ? wq_pool_ids_show+0x300/0x300 [ 61.489883] ? do_raw_spin_lock+0x11f/0x290 [ 61.494201] worker_thread+0x9b/0xe20 [ 61.498003] ? process_one_work+0x1580/0x1580 [ 61.502518] kthread+0x313/0x420 [ 61.505874] ? kthread_park+0x1a0/0x1a0 [ 61.509839] ret_from_fork+0x3a/0x50 [ 61.513541] [ 61.515159] Allocated by task 5582: [ 61.518780] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 61.523701] ext4_htree_store_dirent+0x8d/0x610 [ 61.528358] htree_dirblock_to_tree+0x293/0x5e0 [ 61.533023] ext4_htree_fill_tree+0x229/0x990 [ 61.537533] ext4_readdir+0x14ae/0x2d10 [ 61.541512] iterate_dir+0x481/0x5e0 [ 61.545224] __x64_sys_getdents+0x1e2/0x370 [ 61.549539] do_syscall_64+0xcf/0x4f0 [ 61.553333] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.558512] [ 61.560130] Freed by task 5582: [ 61.563399] __kasan_slab_free+0x130/0x180 [ 61.567622] slab_free_freelist_hook+0x5e/0x140 [ 61.572297] kfree+0xce/0x290 [ 61.575391] free_rb_tree_fname+0x84/0xe0 [ 61.579529] ext4_release_dir+0x46/0x60 [ 61.583496] __fput+0x2df/0x8c0 [ 61.586762] task_work_run+0x149/0x1c0 [ 61.590646] exit_to_usermode_loop+0x243/0x270 [ 61.595221] do_syscall_64+0x40c/0x4f0 [ 61.599100] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.604296] [ 61.605910] The buggy address belongs to the object at ffff888218c33840 [ 61.605910] which belongs to the cache kmalloc-64 of size 64 [ 61.618385] The buggy address is located 34 bytes inside of [ 61.618385] 64-byte region [ffff888218c33840, ffff888218c33880) [ 61.637290] The buggy address belongs to the page: [ 61.642232] page:ffffea0008630cc0 count:1 mapcount:0 mapping:ffff88812c3f5600 index:0x0 [ 61.650385] flags: 0x57ff00000000200(slab) [ 61.654616] raw: 057ff00000000200 ffffea000862a700 0000002a00000002 ffff88812c3f5600 [ 61.662499] raw: 0000000000000000 00000000802a002a 00000001ffffffff 0000000000000000 [ 61.670417] page dumped because: kasan: bad access detected [ 61.676360] [ 61.677983] Memory state around the buggy address: [ 61.684000] ffff888218c33700: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc [ 61.691445] ffff888218c33780: fb fb fb fb fb fb fb fb fc fc fc fc 00 00 00 00 [ 61.698800] >ffff888218c33800: 00 00 fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 61.706194] ^ [ 61.712702] ffff888218c33880: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc [ 61.720287] ffff888218c33900: fb fb fb fb fb fb fb fb fc fc fc fc fb fb fb fb [ 61.727642] ================================================================== [ 61.735052] Disabling lock debugging due to kernel taint [ 61.741067] Kernel panic - not syncing: panic_on_warn set ... [ 61.746978] CPU: 1 PID: 535 Comm: kworker/1:3 Tainted: G B 5.1.0-rc4-319354-g9a33b36 #3 [ 61.756423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.765785] Workqueue: usb_hub_wq hub_event [ 61.770107] Call Trace: [ 61.772766] dump_stack+0xe8/0x16e [ 61.776515] panic+0x29d/0x5f2 [ 61.779699] ? __warn_printk+0xf8/0xf8 [ 61.783629] ? retint_kernel+0x10/0x10 [ 61.787615] ? trace_hardirqs_on+0x55/0x1c0 [ 61.791945] ? ds_probe+0x604/0x760 [ 61.795574] end_report+0x48/0x4e [ 61.799028] ? ds_probe+0x604/0x760 [ 61.802655] kasan_report.cold+0xd/0x3c [ 61.806673] ? ds_probe+0x604/0x760 [ 61.810351] ds_probe+0x604/0x760 [ 61.814318] usb_probe_interface+0x31d/0x820 [ 61.825142] ? usb_probe_device+0x150/0x150 [ 61.829460] really_probe+0x2da/0xb10 [ 61.833300] driver_probe_device+0x21d/0x350 [ 61.837704] __device_attach_driver+0x1d8/0x290 [ 61.842369] ? driver_allows_async_probing+0x160/0x160 [ 61.847646] bus_for_each_drv+0x163/0x1e0 [ 61.851784] ? bus_rescan_devices+0x30/0x30 [ 61.856091] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 61.861199] ? lockdep_hardirqs_on+0x37e/0x580 [ 61.865791] __device_attach+0x223/0x3a0 [ 61.869841] ? device_bind_driver+0xe0/0xe0 [ 61.874330] ? kobject_uevent_env+0x295/0x13d0 [ 61.878973] bus_probe_device+0x1f1/0x2a0 [ 61.883267] ? blocking_notifier_call_chain+0x59/0xb0 [ 61.888453] device_add+0xad2/0x16e0 [ 61.892163] ? get_device_parent.isra.0+0x560/0x560 [ 61.897174] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 61.902283] usb_set_configuration+0xdf7/0x1740 [ 61.906943] generic_probe+0xa2/0xda [ 61.910645] usb_probe_device+0xc0/0x150 [ 61.914706] ? usb_suspend+0x5f0/0x5f0 [ 61.918577] really_probe+0x2da/0xb10 [ 61.922361] driver_probe_device+0x21d/0x350 [ 61.926763] __device_attach_driver+0x1d8/0x290 [ 61.931563] ? driver_allows_async_probing+0x160/0x160 [ 61.936830] bus_for_each_drv+0x163/0x1e0 [ 61.940968] ? bus_rescan_devices+0x30/0x30 [ 61.945286] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 61.950386] ? lockdep_hardirqs_on+0x37e/0x580 [ 61.954972] __device_attach+0x223/0x3a0 [ 61.959030] ? device_bind_driver+0xe0/0xe0 [ 61.963336] ? kobject_uevent_env+0x295/0x13d0 [ 61.967903] bus_probe_device+0x1f1/0x2a0 [ 61.972036] ? blocking_notifier_call_chain+0x59/0xb0 [ 61.977220] device_add+0xad2/0x16e0 [ 61.981049] ? get_device_parent.isra.0+0x560/0x560 [ 61.986064] usb_new_device.cold+0x537/0xccf [ 61.990473] hub_event+0x138e/0x3b00 [ 61.994285] ? hub_port_debounce+0x350/0x350 [ 61.998683] ? _raw_spin_unlock_irq+0x29/0x40 [ 62.003397] process_one_work+0x90f/0x1580 [ 62.007712] ? wq_pool_ids_show+0x300/0x300 [ 62.012025] ? do_raw_spin_lock+0x11f/0x290 [ 62.016338] worker_thread+0x9b/0xe20 [ 62.020248] ? process_one_work+0x1580/0x1580 [ 62.024733] kthread+0x313/0x420 [ 62.028089] ? kthread_park+0x1a0/0x1a0 [ 62.032092] ret_from_fork+0x3a/0x50 [ 62.036593] Kernel Offset: disabled [ 62.040228] Rebooting in 86400 seconds..