------------[ cut here ]------------
kernfs_put: bluetooth/hci1: released with incorrect active_ref 0
WARNING: CPU: 1 PID: 6232 at fs/kernfs/dir.c:527 kernfs_put+0x622/0x760 fs/kernfs/dir.c:525
kobject: 'rfkill202' (000000002d905999): kobject_uevent_env
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 6232 Comm: syz-executor125 Not tainted 4.20.0-rc5+ #146
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x55c kernel/panic.c:188
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
kobject: 'hci5' (000000003677aa20): kobject_add_internal: parent: 'bluetooth', set: 'devices'
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
kobject: 'hci4' (000000003e068380): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4'
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:kernfs_put+0x622/0x760 fs/kernfs/dir.c:525
Code: 00 49 8b 76 30 48 89 b5 20 ff ff ff e8 57 c7 86 ff 48 8b b5 20 ff ff ff 44 89 e9 4c 89 fa 48 c7 c7 40 a7 37 88 e8 4e 27 50 ff <0f> 0b e9 ba fb ff ff e8 22 20 ca ff e9 25 fd ff ff 4c 89 ff e8 15
kobject: 'rfkill202' (000000002d905999): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill202'
RSP: 0018:ffff8881b572f868 EFLAGS: 00010286
kobject: 'hci5' (000000003677aa20): kobject_uevent_env
RAX: 0000000000000000 RBX: ffff8881bff30620 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8165e495 RDI: 0000000000000005
kobject: 'rfkill203' (00000000de29e674): kobject_add_internal: parent: 'hci4', set: 'devices'
RBP: ffff8881b572f970 R08: ffff8881bf744700 R09: ffffed103b5e3ef8
kobject: 'rfkill203' (00000000de29e674): kobject_uevent_env
R10: ffffed103b5e3ef8 R11: ffff8881daf1f7c7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881c06fb2a0 R15: ffff8881cca33780
kobject: 'rfkill202' (000000002d905999): kobject_uevent_env
kobject: 'hci5' (000000003677aa20): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5'
kobject: 'rfkill203' (00000000de29e674): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill203'
 sysfs_put include/linux/sysfs.h:547 [inline]
 kobject_del.part.4+0x42/0xf0 lib/kobject.c:593
 kobject_del+0x1f/0x30 lib/kobject.c:588
 device_del+0x6f8/0xb70 drivers/base/core.c:2093
kobject: 'rfkill202' (000000002d905999): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill202'
 hci_unregister_dev+0x3a2/0x990 net/bluetooth/hci_core.c:3355
kobject: 'rfkill203' (00000000de29e674): kobject_uevent_env
kobject: 'rfkill203' (00000000de29e674): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill203'
kobject: 'rfkill203' (00000000de29e674): kobject_cleanup, parent           (null)
kobject: 'rfkill204' (00000000bd84478f): kobject_add_internal: parent: 'hci2', set: 'devices'
 vhci_release+0x76/0xf0 drivers/bluetooth/hci_vhci.c:354
kobject: 'rfkill204' (00000000bd84478f): kobject_uevent_env
 __fput+0x385/0xa30 fs/file_table.c:278
kobject: 'rfkill203' (00000000de29e674): calling ktype release
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
kobject: 'rfkill203': free name
kobject: 'rfkill204' (00000000bd84478f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill204'
kobject: 'hci4' (000000003e068380): kobject_uevent_env
kobject: 'rfkill204' (00000000bd84478f): kobject_uevent_env
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x400dd0
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
kobject: 'hci4' (000000003e068380): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4'
RSP: 002b:00007ffd4983f998 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
kobject: 'rfkill204' (00000000bd84478f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill204'
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400dd0
RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000001e45880 R11: 0000000000000246 R12: 000000000000dcfd
R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..