[ 33.237000] audit: type=1800 audit(1551528337.792:28): pid=7320 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 34.045502] audit: type=1800 audit(1551528338.662:29): pid=7320 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 34.065094] audit: type=1800 audit(1551528338.672:30): pid=7320 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 44.803316] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 44.827387] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.847298] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 44.862143] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.017775] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 45.033973] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.068571] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 45.098137] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.220425] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 45.252620] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.862300] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 45.887780] Bluetooth: Can't register HCI device [ 45.898133] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 45.906885] ------------[ cut here ]------------ executing program executing program [ 45.913378] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 45.917588] kernfs_put: bluetooth/hci2: released with incorrect active_ref 0 [ 45.928118] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 45.937347] Bluetooth: Can't register HCI device [ 45.939789] Bluetooth: Can't register HCI device [ 45.942307] Bluetooth: Can't register HCI device [ 45.963106] WARNING: CPU: 0 PID: 7930 at fs/kernfs/dir.c:525 kernfs_put+0x4c6/0x5d0 [ 45.964844] kobject: 'hci3' (00000000280ef2e9): kobject_cleanup, parent (null) [ 45.970899] Kernel panic - not syncing: panic_on_warn set ... [ 45.970912] CPU: 0 PID: 7930 Comm: syz-executor881 Not tainted 5.0.0-rc8+ #1 [ 45.970920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.970924] Call Trace: [ 45.970943] dump_stack+0x172/0x1f0 [ 45.970957] ? kernfs_put+0x3d0/0x5d0 executing program executing program executing program [ 45.970971] panic+0x2cb/0x65c [ 45.970985] ? __warn_printk+0xf3/0xf3 [ 45.971000] ? kernfs_put+0x4c6/0x5d0 [ 45.971012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.971023] ? __warn.cold+0x5/0x45 [ 45.971036] ? __warn+0xe8/0x1d0 [ 45.971049] ? kernfs_put+0x4c6/0x5d0 [ 45.971059] __warn.cold+0x20/0x45 [ 45.971072] ? vprintk_emit+0x1ce/0x6d0 [ 45.971083] ? kernfs_put+0x4c6/0x5d0 [ 46.006164] kobject: 'hci3' (00000000280ef2e9): calling ktype release [ 46.007851] report_bug+0x263/0x2b0 [ 46.007875] do_error_trap+0x11b/0x200 executing program [ 46.007891] do_invalid_op+0x37/0x50 [ 46.007901] ? kernfs_put+0x4c6/0x5d0 [ 46.007914] invalid_op+0x14/0x20 [ 46.015501] kobject: 'hci3': free name [ 46.018746] RIP: 0010:kernfs_put+0x4c6/0x5d0 [ 46.018759] Code: 0f 85 1d 01 00 00 49 8b 75 30 48 89 75 c8 e8 41 c7 9d ff 48 8b 55 d0 44 89 f1 48 c7 c7 80 14 78 87 48 8b 75 c8 e8 a8 12 71 ff <0f> 0b e9 61 fc ff ff e8 3e c8 d4 ff e9 ba fd ff ff 48 8b 7d d0 e8 [ 46.018775] RSP: 0018:ffff888091a67c20 EFLAGS: 00010286 [ 46.018785] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 46.018794] RDX: 0000000000000000 RSI: ffffffff815a9066 RDI: ffffed101234cf76 [ 46.018802] RBP: ffff888091a67c78 R08: ffff88808fe3c3c0 R09: ffffed1015d03ef9 [ 46.018810] R10: ffffed1015d03ef8 R11: ffff8880ae81f7c7 R12: ffff88809956b000 [ 46.018823] R13: ffff888094113620 R14: 0000000000000000 R15: ffff88809956b030 [ 46.018846] ? vprintk_func+0x86/0x189 [ 46.018867] kobject_del.part.0+0x42/0xf0 [ 46.151978] kobject_del+0x20/0x30 [ 46.155531] device_del+0x6f4/0xb60 [ 46.159164] ? __device_links_no_driver+0x270/0x270 [ 46.164182] ? kobject_put+0x84/0xe0 [ 46.167238] kobject: 'bluetooth' (000000004409637d): kobject_add_internal: parent: 'virtual', set: '(null)' [ 46.167912] ? vhci_close_dev+0x50/0x50 [ 46.181736] ? vhci_close_dev+0x50/0x50 [ 46.185728] hci_unregister_dev+0x2c6/0x820 [ 46.186388] kobject: 'hci4' (0000000072553a15): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 46.190069] ? vhci_close_dev+0x50/0x50 [ 46.190081] vhci_release+0x76/0xf0 [ 46.190098] __fput+0x2df/0x8d0 [ 46.190116] ____fput+0x16/0x20 [ 46.190130] task_work_run+0x14a/0x1c0 [ 46.199921] kobject: 'hci5' (00000000358a175b): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 46.203805] exit_to_usermode_loop+0x273/0x2c0 [ 46.203831] do_syscall_64+0x52d/0x610 [ 46.207629] kobject: 'hci6' (000000000772d196): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 46.210711] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.210723] RIP: 0033:0x400dd0 [ 46.210736] Code: 01 f0 ff ff 0f 83 b0 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d fd 18 2d 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 84 0a 00 00 c3 48 83 ec 08 e8 3a 01 00 00 [ 46.210743] RSP: 002b:00007ffe66ccc778 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 46.210756] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000400dd0 [ 46.210775] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 46.214150] kobject: 'hci1' (00000000f6b681ce): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 46.217919] RBP: 000000000000b30b R08: 00000000004002c8 R09: 00000000004002c8 [ 46.217928] R10: 00000000016d8880 R11: 0000000000000246 R12: 0000000000401ce0 [ 46.217936] R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000 [ 46.228540] Kernel Offset: disabled [ 46.330987] Rebooting in 86400 seconds..