------------[ cut here ]------------
kernfs_put: bluetooth/hci3: released with incorrect active_ref 0
WARNING: CPU: 1 PID: 8882 at fs/kernfs/dir.c:525 kernfs_put fs/kernfs/dir.c:525 [inline]
WARNING: CPU: 1 PID: 8882 at fs/kernfs/dir.c:525 kernfs_put+0x613/0x760 fs/kernfs/dir.c:506
Kernel panic - not syncing: panic_on_warn set ...
kobject: 'hci0' (000000003bb65f14): kobject_add_internal: parent: 'bluetooth', set: 'devices'
CPU: 1 PID: 8882 Comm: syz-executor940 Not tainted 4.20.0+ #8
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+0x1db/0x2d0 lib/dump_stack.c:113
 panic+0x2cb/0x589 kernel/panic.c:189
kobject: 'hci1' (00000000d412f0cf): kobject_add_internal: parent: 'bluetooth', set: 'devices'
kobject: 'hci4' (000000008b127397): kobject_add_internal: parent: 'bluetooth', set: 'devices'
 __warn.cold+0x20/0x4b kernel/panic.c:544
kobject: 'hci4' (000000008b127397): kobject_uevent_env
 report_bug+0x263/0x2b0 lib/bug.c:186
kobject: 'hci2' (0000000039904103): kobject_add_internal: parent: 'bluetooth', set: 'devices'
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
kobject: 'hci5' (000000002af4cec0): kobject_add_internal: parent: 'bluetooth', set: 'devices'
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
kobject: 'hci5' (000000002af4cec0): kobject_uevent_env
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:kernfs_put fs/kernfs/dir.c:525 [inline]
RIP: 0010:kernfs_put+0x613/0x760 fs/kernfs/dir.c:506
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
RSP: 0018:ffff88808b8af8e8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff816849b6 RDI: 0000000000000005
RBP: ffff88808b8af9d0 R08: ffff8880980bc600 R09: ffffed1015ce5021
R10: ffffed1015ce5020 R11: ffff8880ae728107 R12: ffff88809e4611c0
kobject: 'hci2' (0000000039904103): kobject_uevent_env
R13: 0000000000000000 R14: ffff8880a84bdb60 R15: ffff88809e4611f0
kobject: 'hci4' (000000008b127397): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4'
 sysfs_put include/linux/sysfs.h:547 [inline]
 kobject_del.part.0+0x42/0xf0 lib/kobject.c:593
 kobject_del+0x20/0x30 lib/kobject.c:588
 device_del+0x6f8/0xb70 drivers/base/core.c:2125
 hci_unregister_dev+0x39a/0x980 net/bluetooth/hci_core.c:3355
kobject: 'hci2' (0000000039904103): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2'
 vhci_release+0x76/0xf0 drivers/bluetooth/hci_vhci.c:354
 __fput+0x3c5/0xb10 fs/file_table.c:278
kobject: 'hci1' (00000000d412f0cf): kobject_uevent_env
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x1f4/0x2b0 kernel/task_work.c:113
kobject: 'rfkill1035' (00000000ee05dba1): kobject_add_internal: parent: 'hci4', set: 'devices'
kobject: 'rfkill1035' (00000000ee05dba1): kobject_uevent_env
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x32a/0x3b0 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+0x696/0x800 arch/x86/entry/common.c:293
kobject: 'hci0' (000000003bb65f14): kobject_uevent_env
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x400dd0
kobject: 'hci5' (000000002af4cec0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5'
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: 'hci1' (00000000d412f0cf): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1'
RSP: 002b:00007fff9b816a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400dd0
RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8
R10: 000000000194e880 R11: 0000000000000246 R12: 000000000000d7cc
R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..