[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 26.992438] kauditd_printk_skb: 7 callbacks suppressed [ 26.992450] audit: type=1800 audit(1539917095.043:29): pid=5466 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 [ 27.025396] audit: type=1800 audit(1539917095.043:30): pid=5466 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.52' (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 syzkaller login: [ 55.285892] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 55.308058] 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 [ 55.725771] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 55.737374] Bluetooth: Can't register HCI device [ 55.754493] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 55.765363] 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 [ 55.867006] kasan: CONFIG_KASAN_INLINE enabled executing program executing program executing program executing program executing program [ 55.887608] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.901021] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 55.910215] Bluetooth: Can't register HCI device [ 55.916604] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 55.919566] kobject: 'hci2' (00000000acdaaa96): kobject_uevent_env [ 55.922832] CPU: 0 PID: 5852 Comm: syz-executor119 Not tainted 4.19.0-rc8-next-20181018+ #97 [ 55.922837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.922851] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 55.922860] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff [ 55.922864] RSP: 0018:ffff8801b9f075d0 EFLAGS: 00010202 [ 55.922871] RAX: dffffc0000000000 RBX: ffff8801d7daf540 RCX: ffffffff87be3c27 [ 55.922876] RDX: 0000000000000001 RSI: ffffffff81f9e81a RDI: 0000000000000008 [ 55.922881] RBP: ffff8801b9f07618 R08: fffffbfff128fd1d R09: fffffbfff128fd1c [ 55.922886] R10: fffffbfff128fd1c R11: ffffffff8947e8e7 R12: 0000000000000000 [ 55.922890] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.922903] FS: 0000000002036880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 55.932940] kobject: 'rfkill225' (00000000c4ed95fe): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill225' [ 55.937883] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.937888] CR2: 0000000000414af0 CR3: 00000001cbeda000 CR4: 00000000001406f0 [ 55.937893] Call Trace: [ 55.937906] kernfs_create_dir_ns+0xf6/0x160 [ 55.937920] sysfs_create_dir_ns+0x19b/0x340 [ 55.950154] kobject: 'hci2' (00000000acdaaa96): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 55.951997] ? sysfs_create_mount_point+0xa0/0xa0 [ 55.952007] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 55.952023] ? class_dir_child_ns_type+0xd/0x60 [ 55.993188] kobject: 'rfkill225' (00000000c4ed95fe): kobject_uevent_env [ 55.997997] kobject_add_internal.cold.11+0x116/0x6af [ 55.998007] ? kobj_ns_type_registered+0x60/0x60 [ 55.998023] ? lock_downgrade+0x900/0x900 [ 56.021343] kobject: 'rfkill226' (0000000020fde341): kobject_add_internal: parent: 'hci2', set: 'devices' [ 56.031772] ? refcount_add_not_zero_checked+0x330/0x330 [ 56.031784] ? kasan_check_read+0x11/0x20 [ 56.031793] kobject_add+0x13f/0x1b0 [ 56.031801] ? kset_create_and_add+0x190/0x190 [ 56.031812] ? mutex_unlock+0xd/0x10 [ 56.031827] ? device_add+0x382/0x18e0 executing program [ 56.045779] kobject: 'rfkill225' (00000000c4ed95fe): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill225' [ 56.047537] device_add+0x445/0x18e0 [ 56.047549] ? kfree_const+0x5e/0x70 [ 56.047562] ? get_device_parent.isra.25+0x5a0/0x5a0 [ 56.062612] kobject: 'rfkill226' (0000000020fde341): kobject_uevent_env [ 56.066052] ? dev_set_name+0xad/0xe0 [ 56.066062] ? device_initialize+0x5f0/0x5f0 [ 56.066078] ? start_creating+0x171/0x200 [ 56.086407] kobject: 'rfkill226' (0000000020fde341): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill226' [ 56.087086] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.102452] kobject: 'hci5' (00000000075e573c): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.110798] hci_register_dev+0x3b3/0x9c0 [ 56.110808] ? hci_conn_params_free+0x810/0x810 [ 56.110818] ? iov_iter_advance+0x1370/0x1370 [ 56.110829] __vhci_create_device+0x2c1/0x580 [ 56.110842] vhci_write+0x2de/0x470 [ 56.118003] kobject: 'rfkill227' (000000001fb4def9): kobject_add_internal: parent: 'hci3', set: 'devices' [ 56.120406] __vfs_write+0x6b8/0x9f0 [ 56.120416] ? kernel_read+0x120/0x120 [ 56.120426] ? apparmor_path_rmdir+0x30/0x30 [ 56.120437] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 56.120450] ? apparmor_file_permission+0x24/0x30 [ 56.124327] kobject: 'rfkill227' (000000001fb4def9): kobject_uevent_env [ 56.128705] ? rw_verify_area+0x118/0x360 [ 56.128715] vfs_write+0x1fc/0x560 [ 56.128727] ksys_write+0x101/0x260 [ 56.142090] kobject: 'rfkill227' (000000001fb4def9): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill227' [ 56.147181] ? __ia32_sys_read+0xb0/0xb0 [ 56.147192] ? trace_hardirqs_off_caller+0x300/0x300 [ 56.147204] __x64_sys_write+0x73/0xb0 [ 56.155997] kobject: 'hci5' (00000000075e573c): kobject_uevent_env [ 56.159786] do_syscall_64+0x1b9/0x820 [ 56.159796] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 56.159805] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.159813] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.159827] ? trace_hardirqs_on_caller+0x310/0x310 [ 56.173698] kobject: 'hci5' (00000000075e573c): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 56.174736] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 56.174746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.174755] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.174768] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.182694] kobject: 'rfkill227' (000000001fb4def9): kobject_uevent_env [ 56.189802] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.189809] RIP: 0033:0x440e79 [ 56.189820] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.189825] RSP: 002b:00007ffc28e3fde8 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 56.189838] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e79 [ 56.209933] kobject: 'rfkill227' (000000001fb4def9): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill227' [ 56.213820] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 56.213826] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 56.213831] R10: 0000000002036880 R11: 0000000000000213 R12: 000000000000da06 [ 56.213836] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 [ 56.213844] Modules linked in: [ 56.214675] kobject: 'rfkill228' (0000000029623825): kobject_add_internal: parent: 'hci4', set: 'devices' [ 56.219608] ---[ end trace 52de90cd12b0e25b ]--- [ 56.230410] kobject: 'rfkill228' (0000000029623825): kobject_uevent_env [ 56.237624] RIP: 0010:kernfs_add_one+0x342/0x4d0 executing program [ 56.264463] kobject: 'rfkill228' (0000000029623825): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill228' [ 56.266295] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff [ 56.271386] kobject: 'rfkill228' (0000000029623825): kobject_uevent_env [ 56.273581] kobject: 'rfkill225' (00000000c4ed95fe): kobject_cleanup, parent (null) [ 56.277559] kobject: 'rfkill228' (0000000029623825): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill228' [ 56.290177] kobject: 'rfkill226' (0000000020fde341): kobject_uevent_env [ 56.303605] RSP: 0018:ffff8801b9f075d0 EFLAGS: 00010202 [ 56.307100] kobject: 'rfkill229' (000000008d775a52): kobject_add_internal: parent: 'hci5', set: 'devices' [ 56.319186] RAX: dffffc0000000000 RBX: ffff8801d7daf540 RCX: ffffffff87be3c27 [ 56.326107] kobject: 'rfkill226' (0000000020fde341): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill226' [ 56.333663] RDX: 0000000000000001 RSI: ffffffff81f9e81a RDI: 0000000000000008 [ 56.341346] kobject: 'rfkill225' (00000000c4ed95fe): calling ktype release [ 56.346004] RBP: ffff8801b9f07618 R08: fffffbfff128fd1d R09: fffffbfff128fd1c [ 56.352068] kobject: 'rfkill225': free name [ 56.357822] kobject: 'rfkill229' (000000008d775a52): kobject_uevent_env [ 56.361861] kobject: 'hci1' (00000000f9a556ee): kobject_uevent_env [ 56.368294] R10: fffffbfff128fd1c R11: ffffffff8947e8e7 R12: 0000000000000000 [ 56.374714] kobject: 'hci1' (00000000f9a556ee): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 56.376831] kobject: 'rfkill229' (000000008d775a52): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill229' [ 56.396611] kobject: 'hci1' (00000000f9a556ee): kobject_cleanup, parent (null) [ 56.403765] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 56.411300] kobject: 'hci1' (00000000f9a556ee): calling ktype release [ 56.421786] FS: 0000000002036880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 56.429326] kobject: 'hci1': free name [ 56.437898] kobject: 'rfkill229' (000000008d775a52): kobject_uevent_env [ 56.443822] kobject: 'rfkill227' (000000001fb4def9): kobject_cleanup, parent (null) [ 56.450834] kobject: 'rfkill228' (0000000029623825): kobject_cleanup, parent (null) [ 56.454563] kobject: 'rfkill227' (000000001fb4def9): calling ktype release [ 56.463673] kobject: 'rfkill226' (0000000020fde341): kobject_cleanup, parent (null) [ 56.468563] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.475363] kobject: 'rfkill226' (0000000020fde341): calling ktype release [ 56.481993] kobject: 'rfkill227': free name [ 56.491683] kobject: 'rfkill228' (0000000029623825): calling ktype release [ 56.510680] CR2: 00007f00dbd97000 CR3: 00000001cbeda000 CR4: 00000000001406f0 [ 56.516832] kobject: 'rfkill229' (000000008d775a52): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill229' [ 56.527578] kobject: 'hci1' (00000000a22e8073): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.536506] kobject: 'rfkill226': free name [ 56.543863] Kernel panic - not syncing: Fatal exception [ 56.548754] kobject: 'rfkill228': free name [ 56.558929] Kernel Offset: disabled [ 56.787106] Rebooting in 86400 seconds..