[ 38.028708][ T27] audit: type=1800 audit(1555979268.406:27): pid=7581 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 38.058821][ T27] audit: type=1800 audit(1555979268.406:28): pid=7581 uid=0 auid=4294967295 ses=4294967295 subj=_ 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. [ 38.748672][ T27] audit: type=1800 audit(1555979269.176:29): pid=7581 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 38.768366][ T27] audit: type=1800 audit(1555979269.186:30): pid=7581 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 '10.128.1.9' (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 syzkaller login: [ 104.123062][ T7874] kobject_add_internal failed for hci6 (error: -2 parent: bluetooth) [ 104.153966][ T7874] 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 [ 104.433706][ T7918] 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 [ 104.485179][ T7918] 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 [ 104.754445][ T7968] kasan: CONFIG_KASAN_INLINE enabled [ 104.765166][ T7968] kasan: GPF could be caused by NULL-ptr deref or user memory access executing program [ 104.826481][ T7968] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 104.828418][ T7976] kobject: 'rfkill216' (0000000028e114d2): kobject_uevent_env [ 104.834597][ T7968] CPU: 0 PID: 7968 Comm: syz-executor925 Not tainted 5.1.0-rc6 #79 [ 104.834603][ T7968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.834625][ T7968] RIP: 0010:kernfs_add_one+0x343/0x4d0 [ 104.834634][ T7968] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 70 48 8d 7b 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 1f 01 00 00 8b 5b 08 31 ff 83 [ 104.834639][ T7968] RSP: 0018:ffff888084e8f818 EFLAGS: 00010202 [ 104.834646][ T7968] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff870fa968 [ 104.834650][ T7968] RDX: 0000000000000001 RSI: ffffffff81d616db RDI: 0000000000000008 [ 104.834654][ T7968] RBP: ffff888084e8f858 R08: 1ffffffff1151e54 R09: fffffbfff1151e55 [ 104.834659][ T7968] R10: fffffbfff1151e54 R11: ffffffff88a8f2a7 R12: ffff8880967062a0 [ 104.834664][ T7968] R13: ffff8880967062a0 R14: 0000000000000000 R15: 0000000000000000 [ 104.834670][ T7968] FS: 00000000011a4940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 104.834674][ T7968] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.834678][ T7968] CR2: 00000000006cc090 CR3: 00000000a803b000 CR4: 00000000001406f0 [ 104.834685][ T7968] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.834699][ T7968] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.842448][ T7974] kobject: 'hci2' (00000000ae8c1453): kobject_cleanup, parent (null) [ 104.850177][ T7968] Call Trace: [ 104.862654][ T7975] kobject: 'rfkill213' (0000000046a3a00b): calling ktype release [ 104.865678][ T7968] kernfs_create_dir_ns+0xff/0x160 [ 104.927540][ T7976] kobject: 'rfkill216' (0000000028e114d2): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill216' [ 104.931757][ T7968] sysfs_create_dir_ns+0x131/0x2a0 [ 104.931769][ T7968] ? sysfs_create_mount_point+0xa0/0xa0 [ 104.931793][ T7968] ? class_dir_child_ns_type+0xd/0x60 [ 104.950325][ T7974] kobject: 'hci2' (00000000ae8c1453): calling ktype release [ 104.955260][ T7968] kobject_add_internal.cold+0xe5/0x5d4 [ 104.955273][ T7968] kobject_add+0x150/0x1c0 [ 104.955282][ T7968] ? kset_create_and_add+0x1a0/0x1a0 [ 104.955306][ T7968] ? kasan_check_read+0x11/0x20 [ 104.981192][ T7975] kobject: 'rfkill213': free name [ 104.983425][ T7968] ? mutex_unlock+0xd/0x10 [ 104.983442][ T7968] ? device_add+0x30f/0x18a0 [ 104.983460][ T7968] device_add+0x3d5/0x18a0 [ 104.991956][ T7974] kobject: 'hci2': free name [ 104.996503][ T7968] ? device_initialize+0x440/0x440 [ 105.011125][ T7976] kobject: 'rfkill216' (0000000028e114d2): kobject_cleanup, parent (null) [ 105.013214][ T7968] ? get_device_parent.isra.0+0x570/0x570 [ 105.013231][ T7968] hci_register_dev+0x2e8/0x860 [ 105.013253][ T7968] __vhci_create_device+0x2d0/0x5a0 [ 105.018773][ T7976] kobject: 'rfkill216' (0000000028e114d2): calling ktype release [ 105.024118][ T7968] vhci_write+0x2d0/0x470 [ 105.024133][ T7968] new_sync_write+0x4c7/0x760 [ 105.024150][ T7968] ? default_llseek+0x2e0/0x2e0 [ 105.037237][ T7975] kobject: 'hci4' (00000000155afe9c): kobject_uevent_env [ 105.041360][ T7968] ? __do_page_fault+0x623/0xda0 [ 105.041374][ T7968] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.041396][ T7968] ? security_file_permission+0x94/0x380 [ 105.071802][ T7975] kobject: 'hci4' (00000000155afe9c): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 105.074543][ T7968] ? find_held_lock+0x35/0x130 [ 105.091477][ T7976] kobject: 'rfkill216': free name [ 105.094783][ T7968] __vfs_write+0xe4/0x110 [ 105.099805][ T7976] kobject: 'hci1' (000000009832569f): kobject_uevent_env [ 105.104879][ T7968] vfs_write+0x20c/0x580 [ 105.104892][ T7968] ksys_write+0x14f/0x2d0 [ 105.104905][ T7968] ? __ia32_sys_read+0xb0/0xb0 [ 105.104926][ T7968] ? do_syscall_64+0x26/0x610 [ 105.121433][ T7975] kobject: 'hci4' (00000000155afe9c): kobject_cleanup, parent (null) [ 105.121610][ T7968] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.126425][ T7975] kobject: 'hci4' (00000000155afe9c): calling ktype release [ 105.126469][ T7975] kobject: 'hci4': free name executing program executing program executing program [ 105.133433][ T7968] ? do_syscall_64+0x26/0x610 [ 105.133450][ T7968] __x64_sys_write+0x73/0xb0 [ 105.133466][ T7968] do_syscall_64+0x103/0x610 [ 105.156616][ T7976] kobject: 'hci1' (000000009832569f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 105.160526][ T7968] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.165481][ T7976] kobject: 'bluetooth' (000000007ef78346): kobject_cleanup, parent (null) [ 105.170266][ T7968] RIP: 0033:0x441649 [ 105.174583][ T7976] kobject: 'bluetooth' (000000007ef78346): calling ktype release [ 105.181571][ T7968] 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 105.181577][ T7968] RSP: 002b:00007ffe4cc72ed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 105.185816][ T7976] kobject: 'bluetooth': free name [ 105.190212][ T7968] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441649 [ 105.195145][ T7976] kobject: 'hci1' (000000009832569f): kobject_cleanup, parent (null) [ 105.199602][ T7968] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 105.208530][ T7976] kobject: 'hci1' (000000009832569f): calling ktype release [ 105.214553][ T7968] RBP: 00000000000198f3 R08: 0000000000402450 R09: 0000000000402450 [ 105.214560][ T7968] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004023c0 [ 105.214572][ T7968] R13: 0000000000402450 R14: 0000000000000000 R15: 0000000000000000 [ 105.221880][ T7976] kobject: 'hci1': free name [ 105.226393][ T7968] Modules linked in: [ 105.231524][ T7977] kobject: 'bluetooth' (00000000fa0d3987): kobject_add_internal: parent: 'virtual', set: '(null)' [ 105.245943][ T7968] ---[ end trace 01f0b0d9228b128b ]--- [ 105.260701][ T7973] kobject: 'hci6' (0000000087ebeab4): kobject_cleanup, parent (null) [ 105.266290][ T7968] RIP: 0010:kernfs_add_one+0x343/0x4d0 [ 105.281996][ T7973] kobject: 'hci6' (0000000087ebeab4): calling ktype release [ 105.299635][ T7968] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 70 48 8d 7b 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 1f 01 00 00 8b 5b 08 31 ff 83 [ 105.316597][ T7982] kobject: 'hci2' (000000006886c018): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 105.320677][ T7968] RSP: 0018:ffff888084e8f818 EFLAGS: 00010202 [ 105.328727][ T7980] kobject: 'hci4' (000000007dd2a70a): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 105.337187][ T7968] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff870fa968 [ 105.343851][ T7981] kobject: 'hci5' (00000000ee88c580): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 105.352200][ T7968] RDX: 0000000000000001 RSI: ffffffff81d616db RDI: 0000000000000008 [ 105.360933][ T7977] kobject: 'hci1' (00000000fa5a4a6f): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 105.368647][ T7968] RBP: ffff888084e8f858 R08: 1ffffffff1151e54 R09: fffffbfff1151e55 [ 105.373677][ T7982] kobject: 'hci2' (000000006886c018): kobject_uevent_env [ 105.377447][ T7968] R10: fffffbfff1151e54 R11: ffffffff88a8f2a7 R12: ffff8880967062a0 [ 105.387520][ T7980] kobject: 'hci4' (000000007dd2a70a): kobject_uevent_env [ 105.393385][ T7968] R13: ffff8880967062a0 R14: 0000000000000000 R15: 0000000000000000 [ 105.401914][ T7981] kobject: 'hci5' (00000000ee88c580): kobject_uevent_env [ 105.407770][ T7968] FS: 00000000011a4940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 105.414634][ T7973] kobject: 'hci6': free name [ 105.434844][ T7968] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.444880][ T7977] kobject: 'hci1' (00000000fa5a4a6f): kobject_uevent_env [ 105.451606][ T7968] CR2: 00007fc648ee16e3 CR3: 00000000a803b000 CR4: 00000000001406f0 executing program [ 105.461371][ T7982] kobject: 'hci2' (000000006886c018): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 105.469847][ T7968] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 105.479716][ T7981] kobject: 'hci5' (00000000ee88c580): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 105.488434][ T7968] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 105.498361][ T7977] kobject: 'hci1' (00000000fa5a4a6f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 105.507972][ T7980] kobject: 'hci4' (000000007dd2a70a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 105.515166][ T7982] kobject: 'rfkill217' (00000000a0a02357): kobject_add_internal: parent: 'hci2', set: 'devices' [ 105.574461][ T7968] Kernel panic - not syncing: Fatal exception [ 105.582131][ T7984] kobject: 'hci6' (000000004445bb1e): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 105.598140][ T7968] Kernel Offset: disabled [ 105.668214][ T7968] Rebooting in 86400 seconds..