[....] 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. [ 26.565385] kauditd_printk_skb: 7 callbacks suppressed [ 26.565402] audit: type=1800 audit(1539928650.160:29): pid=5218 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 26.590878] audit: type=1800 audit(1539928650.170:30): pid=5218 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.10.44' (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 syzkaller login: [ 51.452870] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 51.469832] 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 [ 52.183910] kasan: CONFIG_KASAN_INLINE enabled [ 52.217135] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.224736] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.224822] kobject: 'rfkill226' (00000000358a96fb): kobject_uevent_env [ 52.230985] CPU: 0 PID: 5608 Comm: syz-executor035 Not tainted 4.19.0-rc8+ #67 [ 52.230994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.231016] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 52.231031] 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 [ 52.231039] RSP: 0018:ffff8801d14075d0 EFLAGS: 00010202 [ 52.231051] RAX: dffffc0000000000 RBX: ffff8801d799ee00 RCX: ffffffff87af5377 [ 52.231059] RDX: 0000000000000001 RSI: ffffffff81f7b0da RDI: 0000000000000008 [ 52.231068] RBP: ffff8801d1407618 R08: fffffbfff128fe41 R09: fffffbfff128fe40 [ 52.231076] R10: fffffbfff128fe40 R11: ffffffff8947f207 R12: 0000000000000000 [ 52.231084] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.231096] FS: 00000000023f4880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 52.231111] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.231119] CR2: 00007f8ee42f0000 CR3: 00000001c7bf5000 CR4: 00000000001406f0 [ 52.231136] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.239201] kobject: 'hci5' (0000000062e7e8ab): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 52.245270] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.245275] Call Trace: [ 52.245301] kernfs_create_dir_ns+0xf6/0x160 [ 52.245319] sysfs_create_dir_ns+0x19b/0x340 [ 52.254867] kobject: 'rfkill228': free name [ 52.259452] ? sysfs_create_mount_point+0xa0/0xa0 [ 52.259472] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 52.259487] ? kasan_check_write+0x14/0x20 [ 52.259503] ? do_raw_spin_lock+0xc1/0x200 [ 52.259524] ? class_dir_child_ns_type+0xd/0x60 [ 52.279188] kobject: 'rfkill226' (00000000358a96fb): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill226' [ 52.283798] kobject_add_internal.cold.11+0x116/0x6af [ 52.283817] ? kobj_ns_type_registered+0x60/0x60 [ 52.283838] ? lock_downgrade+0x900/0x900 [ 52.291717] kobject: 'hci5' (0000000062e7e8ab): kobject_uevent_env [ 52.298376] ? refcount_add_not_zero_checked+0x330/0x330 [ 52.298393] ? kasan_check_read+0x11/0x20 [ 52.298410] kobject_add+0x13f/0x1b0 [ 52.298427] ? kset_create_and_add+0x190/0x190 [ 52.306297] kobject: 'rfkill226' (00000000358a96fb): kobject_cleanup, parent (null) [ 52.312998] ? mutex_unlock+0xd/0x10 [ 52.313014] ? device_add+0x30c/0x17b0 [ 52.313030] device_add+0x3cf/0x17b0 [ 52.313048] ? kfree_const+0x5e/0x70 [ 52.313067] ? get_device_parent.isra.27+0x5a0/0x5a0 [ 52.320838] kobject: 'hci5' (0000000062e7e8ab): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 52.328551] ? dev_set_name+0xad/0xe0 [ 52.328566] ? device_initialize+0x5f0/0x5f0 [ 52.328589] hci_register_dev+0x3b3/0x9c0 [ 52.328606] ? hci_conn_params_free+0x810/0x810 [ 52.335032] kobject: 'hci4' (000000009e2ea645): kobject_uevent_env [ 52.341747] ? graph_lock+0x170/0x170 [ 52.341770] ? iov_iter_advance+0x1460/0x1460 [ 52.341788] __vhci_create_device+0x2c1/0x580 [ 52.341805] vhci_write+0x2de/0x470 [ 52.349690] kobject: 'rfkill229' (00000000215b4191): kobject_add_internal: parent: 'hci5', set: 'devices' [ 52.358774] __vfs_write+0x6b8/0x9f0 [ 52.358792] ? kernel_read+0x120/0x120 [ 52.358810] ? __do_page_fault+0x6c1/0xed0 [ 52.358832] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.366502] kobject: 'rfkill226' (00000000358a96fb): calling ktype release executing program [ 52.368676] ? handle_mm_fault+0x56e/0xc70 [ 52.368696] ? rw_verify_area+0x118/0x360 [ 52.368712] vfs_write+0x1fc/0x560 [ 52.368729] ksys_write+0x101/0x260 [ 52.373884] kobject: 'rfkill226': free name [ 52.377531] ? __ia32_sys_read+0xb0/0xb0 [ 52.377551] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 52.377569] __x64_sys_write+0x73/0xb0 [ 52.377590] do_syscall_64+0x1b9/0x820 [ 52.382795] kobject: 'hci4' (000000009e2ea645): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' executing program [ 52.386759] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 52.386777] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.386791] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.386809] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.392653] kobject: 'rfkill229' (00000000215b4191): kobject_uevent_env [ 52.395782] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 52.395799] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.395818] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.400465] kobject: 'hci0' (0000000026275e74): kobject_uevent_env [ 52.404711] ? trace_hardirqs_off_thunk+0x1a/0x1c executing program [ 52.404733] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.404748] RIP: 0033:0x440e49 [ 52.416131] kobject: 'rfkill229' (00000000215b4191): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill229' [ 52.420841] 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 [ 52.420850] RSP: 002b:00007ffc59c1df78 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 executing program [ 52.420866] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e49 [ 52.420874] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 52.420882] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 52.420895] R10: 00000000023f4880 R11: 0000000000000213 R12: 000000000000cb97 [ 52.426232] kobject: 'hci4' (000000009e2ea645): kobject_cleanup, parent (null) [ 52.429785] R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000 [ 52.429800] Modules linked in: [ 52.431069] kobject: 'hci3' (00000000edfbf0b0): kobject_uevent_env [ 52.436639] kobject: 'hci4' (000000009e2ea645): calling ktype release [ 52.478339] kobject: 'hci3' (00000000edfbf0b0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 52.484270] kobject: 'rfkill229' (00000000215b4191): kobject_uevent_env [ 52.493260] kobject: 'rfkill227' (000000005cc9d2bd): kobject_cleanup, parent (null) [ 52.497055] kobject: 'rfkill229' (00000000215b4191): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill229' [ 52.501572] kobject: 'rfkill227' (000000005cc9d2bd): calling ktype release [ 52.505861] kobject: 'rfkill229' (00000000215b4191): kobject_cleanup, parent (null) [ 52.515049] kobject: 'hci0' (0000000026275e74): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' [ 52.517168] kobject: 'rfkill229' (00000000215b4191): calling ktype release [ 52.538806] kobject: 'rfkill227': free name [ 52.543658] kobject: 'hci4': free name [ 52.547029] kobject: 'hci0' (0000000026275e74): kobject_cleanup, parent (null) [ 52.551046] kobject: 'rfkill229': free name executing program [ 52.569045] kobject: 'hci0' (0000000026275e74): calling ktype release [ 52.573570] kobject: 'hci5' (0000000062e7e8ab): kobject_uevent_env [ 52.578263] kobject: 'hci1' (000000005b3b3e25): kobject_uevent_env [ 52.581859] kobject: 'hci0' (0000000011c3a720): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 52.585642] kobject: 'hci1' (000000005b3b3e25): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 52.588067] kobject: 'hci5' (0000000062e7e8ab): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 52.595080] kobject: 'hci0': free name [ 52.597851] kobject: 'hci0' (0000000011c3a720): kobject_uevent_env [ 52.604608] kobject: 'hci1' (000000005b3b3e25): kobject_cleanup, parent (null) [ 52.605301] kobject: 'hci0' (0000000011c3a720): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' [ 52.616097] kobject: 'hci3' (00000000edfbf0b0): kobject_cleanup, parent (null) [ 52.620894] kobject: 'hci5' (0000000062e7e8ab): kobject_cleanup, parent (null) [ 52.634042] kobject: 'hci3' (00000000edfbf0b0): calling ktype release [ 52.638495] kobject: 'hci1' (00000000569f1b85): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 52.652624] kobject: 'hci1' (000000005b3b3e25): calling ktype release [ 52.653102] kobject: 'hci5' (0000000062e7e8ab): calling ktype release [ 52.663653] kobject: 'hci3': free name [ 52.665100] kobject: 'rfkill230' (00000000c0f23d95): kobject_add_internal: parent: 'hci0', set: 'devices' [ 52.672831] kobject: 'hci1': free name [ 52.674871] kobject: 'hci5': free name [ 52.699645] kobject: 'hci3' (00000000ec9006ae): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 52.709660] kobject: 'hci1' (00000000569f1b85): kobject_uevent_env [ 52.720109] kobject: 'hci4' (00000000c163bcb1): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 52.723947] kobject: 'rfkill230' (00000000c0f23d95): kobject_uevent_env [ 52.746152] kobject: 'hci3' (00000000ec9006ae): kobject_uevent_env [ 52.753724] kobject: 'hci1' (00000000569f1b85): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 52.765447] kobject: 'hci4' (00000000c163bcb1): kobject_uevent_env [ 52.772032] kobject: 'rfkill230' (00000000c0f23d95): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill230' [ 52.786433] kobject: 'hci4' (00000000c163bcb1): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 52.787105] kobject: 'rfkill231' (000000009cca3c15): kobject_add_internal: parent: 'hci1', set: 'devices' [ 52.807323] kobject: 'hci3' (00000000ec9006ae): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 52.813548] kobject: 'rfkill230' (00000000c0f23d95): kobject_uevent_env [ 52.891792] kobject: 'hci5' (00000000620a8fbd): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 52.897921] kobject: 'rfkill230' (00000000c0f23d95): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill230' [ 52.930981] kobject: 'hci5' (00000000620a8fbd): kobject_uevent_env [ 52.934872] ---[ end trace bcd908b15151e270 ]--- [ 52.953378] kobject: 'rfkill231' (000000009cca3c15): kobject_uevent_env [ 52.960150] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 52.976959] kobject: 'rfkill231' (000000009cca3c15): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill231' [ 52.982566] 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 [ 52.990092] kobject: 'hci5' (00000000620a8fbd): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 52.993083] RSP: 0018:ffff8801d14075d0 EFLAGS: 00010202 [ 53.024120] kobject: 'rfkill232' (0000000038dfd55a): kobject_add_internal: parent: 'hci4', set: 'devices' [ 53.036739] kobject: 'rfkill231' (000000009cca3c15): kobject_uevent_env [ 53.043379] RAX: dffffc0000000000 RBX: ffff8801d799ee00 RCX: ffffffff87af5377 [ 53.063852] kobject: 'rfkill232' (0000000038dfd55a): kobject_uevent_env [ 53.065884] RDX: 0000000000000001 RSI: ffffffff81f7b0da RDI: 0000000000000008 [ 53.090097] kobject: 'rfkill231' (000000009cca3c15): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill231' [ 53.096296] RBP: ffff8801d1407618 R08: fffffbfff128fe41 R09: fffffbfff128fe40 [ 53.117445] kobject: 'rfkill232' (0000000038dfd55a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill232' [ 53.122525] R10: fffffbfff128fe40 R11: ffffffff8947f207 R12: 0000000000000000 [ 53.145279] kobject: 'rfkill233' (000000005cdad430): kobject_add_internal: parent: 'hci3', set: 'devices' [ 53.151500] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 53.156281] kobject: 'rfkill233' (000000005cdad430): kobject_uevent_env [ 53.167200] FS: 00000000023f4880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 53.186629] kobject: 'rfkill232' (0000000038dfd55a): kobject_uevent_env [ 53.197357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.201531] kobject: 'rfkill232' (0000000038dfd55a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill232' [ 53.211172] CR2: 0000000000414ac0 CR3: 00000001c7bf5000 CR4: 00000000001406e0 [ 53.218186] kobject: 'rfkill233' (000000005cdad430): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill233' [ 53.225300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.236296] kobject: 'rfkill233' (000000005cdad430): kobject_uevent_env [ 53.239160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.239172] Kernel panic - not syncing: Fatal exception [ 53.250218] kobject: 'rfkill230' (00000000c0f23d95): kobject_cleanup, parent (null) [ 53.258196] Kernel Offset: disabled [ 53.388642] Rebooting in 86400 seconds..