[ 37.373891] audit: type=1800 audit(1546585152.438:28): pid=7655 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. [ 38.027244] audit: type=1800 audit(1546585153.158:29): pid=7655 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 [ 38.046805] audit: type=1800 audit(1546585153.158:30): pid=7655 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 '10.128.0.63' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 50.523911] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 50.556682] 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 [ 50.927225] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 50.938210] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 50.948844] Bluetooth: Can't register HCI device [ 50.968895] 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 [ 51.755611] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 51.785518] 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 [ 52.006104] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 52.034487] 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 [ 52.108548] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 52.124440] Bluetooth: Can't register HCI device [ 52.141375] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 52.179139] 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 [ 52.785773] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 52.816139] 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 [ 53.055275] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 53.085212] 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 [ 53.454336] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 53.491714] 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 [ 53.589891] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 53.626838] 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 [ 53.645646] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 53.673565] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 54.873176] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 54.906646] 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 [ 55.330353] ------------[ cut here ]------------ [ 55.344597] kernfs_put: bluetooth/hci3: released with incorrect active_ref 0 [ 55.355450] WARNING: CPU: 1 PID: 8882 at fs/kernfs/dir.c:525 kernfs_put+0x613/0x760 [ 55.363280] Kernel panic - not syncing: panic_on_warn set ... [ 55.364482] kobject: 'hci0' (000000003bb65f14): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 55.369179] CPU: 1 PID: 8882 Comm: syz-executor940 Not tainted 4.20.0+ #8 [ 55.369187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.369191] Call Trace: [ 55.369211] dump_stack+0x1db/0x2d0 [ 55.369226] ? dump_stack_print_info.cold+0x20/0x20 [ 55.369251] ? kernfs_put+0x610/0x760 [ 55.369267] panic+0x2cb/0x589 [ 55.369280] ? add_taint.cold+0x16/0x16 [ 55.369296] ? kernfs_put+0x613/0x760 [ 55.369312] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.379356] kobject: 'hci1' (00000000d412f0cf): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 55.386121] ? __probe_kernel_read+0x1f4/0x250 [ 55.397216] kobject: 'hci4' (000000008b127397): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 55.398050] ? __warn.cold+0x5/0x4b [ 55.398064] ? __warn+0xe8/0x1d0 [ 55.398079] ? kernfs_put+0x613/0x760 [ 55.398092] __warn.cold+0x20/0x4b [ 55.398105] ? kernfs_put+0x613/0x760 [ 55.401892] kobject: 'hci4' (000000008b127397): kobject_uevent_env [ 55.406721] report_bug+0x263/0x2b0 [ 55.410816] kobject: 'hci2' (0000000039904103): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 55.413713] do_error_trap+0x11b/0x200 [ 55.418435] kobject: 'hci5' (000000002af4cec0): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 55.421456] do_invalid_op+0x37/0x50 [ 55.427129] kobject: 'hci5' (000000002af4cec0): kobject_uevent_env [ 55.436754] ? kernfs_put+0x613/0x760 [ 55.436770] invalid_op+0x14/0x20 [ 55.436782] RIP: 0010:kernfs_put+0x613/0x760 [ 55.436796] Code: 30 48 89 b5 40 ff ff ff e8 6a d6 86 ff 48 8b 95 48 ff ff ff 44 89 e9 48 c7 c7 c0 08 58 88 48 8b b5 40 ff ff ff e8 9d 2d 50 ff <0f> 0b e9 be fb ff ff e8 91 a9 ca ff e9 22 fd ff ff 4c 89 ff e8 84 [ 55.436803] RSP: 0018:ffff88808b8af8e8 EFLAGS: 00010282 [ 55.436813] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 55.436821] RDX: 0000000000000000 RSI: ffffffff816849b6 RDI: 0000000000000005 [ 55.436829] RBP: ffff88808b8af9d0 R08: ffff8880980bc600 R09: ffffed1015ce5021 [ 55.436841] R10: ffffed1015ce5020 R11: ffff8880ae728107 R12: ffff88809e4611c0 [ 55.445030] kobject: 'hci2' (0000000039904103): kobject_uevent_env [ 55.451112] R13: 0000000000000000 R14: ffff8880a84bdb60 R15: ffff88809e4611f0 [ 55.451141] ? vprintk_func+0x86/0x189 [ 55.451158] ? kernfs_put+0x613/0x760 [ 55.451174] ? kernfs_get+0x30/0x30 [ 55.451192] ? mutex_unlock+0xd/0x10 [ 55.451205] ? kernfs_remove+0x30/0x40 [ 55.465648] kobject: 'hci4' (000000008b127397): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 55.469310] kobject_del.part.0+0x42/0xf0 [ 55.469332] kobject_del+0x20/0x30 [ 55.469347] device_del+0x6f8/0xb70 [ 55.469364] ? __device_links_no_driver+0x330/0x330 [ 55.469375] ? kobject_put+0x84/0xe0 [ 55.469397] hci_unregister_dev+0x39a/0x980 [ 55.477037] kobject: 'hci2' (0000000039904103): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 55.479334] ? hci_bdaddr_list_clear+0x2f0/0x2f0 [ 55.479363] vhci_release+0x76/0xf0 [ 55.479380] __fput+0x3c5/0xb10 [ 55.479396] ? vhci_close_dev+0x50/0x50 [ 55.479411] ? get_max_files+0x20/0x20 [ 55.494156] kobject: 'hci1' (00000000d412f0cf): kobject_uevent_env [ 55.503107] ? task_work_run+0x1bb/0x2b0 [ 55.503122] ? trace_hardirqs_off_caller+0x300/0x300 [ 55.503137] ? do_raw_spin_trylock+0x270/0x270 [ 55.503153] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.503172] ____fput+0x16/0x20 [ 55.503184] task_work_run+0x1f4/0x2b0 [ 55.512942] kobject: 'rfkill1035' (00000000ee05dba1): kobject_add_internal: parent: 'hci4', set: 'devices' [ 55.513205] ? task_work_cancel+0x2c0/0x2c0 [ 55.513221] ? __close_fd+0x25f/0x3d0 [ 55.517346] kobject: 'rfkill1035' (00000000ee05dba1): kobject_uevent_env [ 55.520513] ? do_syscall_64+0x8c/0x800 [ 55.520530] exit_to_usermode_loop+0x32a/0x3b0 [ 55.520547] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.520561] ? syscall_trace_enter+0x12a0/0x12a0 [ 55.520573] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.520594] do_syscall_64+0x696/0x800 [ 55.529161] kobject: 'hci0' (000000003bb65f14): kobject_uevent_env [ 55.543965] ? syscall_return_slowpath+0x5f0/0x5f0 [ 55.543980] ? prepare_exit_to_usermode+0x232/0x3b0 [ 55.543999] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.544020] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.544033] RIP: 0033:0x400dd0 [ 55.558285] kobject: 'hci5' (000000002af4cec0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 55.564261] 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 [ 55.575037] kobject: 'hci1' (00000000d412f0cf): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 55.578800] RSP: 002b:00007fff9b816a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 55.578813] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400dd0 [ 55.578820] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 55.578827] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 55.578834] R10: 000000000194e880 R11: 0000000000000246 R12: 000000000000d7cc [ 55.578842] R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000 [ 55.586366] Kernel Offset: disabled [ 55.876158] Rebooting in 86400 seconds..