debugfs: Directory 'hci2' with parent 'bluetooth' already present!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11590 at fs/kernfs/dir.c:493 kernfs_get.part.0.cold+0x11/0x18 fs/kernfs/dir.c:493
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 11590 Comm: syz-executor983 Not tainted 5.3.0-rc2+ #93
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1026
RIP: 0010:kernfs_get.part.0.cold+0x11/0x18 fs/kernfs/dir.c:493
Code: ff e8 cc 37 97 ff 48 c7 c7 80 6f 99 87 e8 14 d8 80 ff 0f 0b e9 45 a8 ff ff e8 b4 37 97 ff 48 c7 c7 80 6f 99 87 e8 fc d7 80 ff <0f> 0b e9 69 ac ff ff e8 9c 37 97 ff 48 c7 c7 80 6f 99 87 e8 e4 d7
RSP: 0018:ffff88808b017818 EFLAGS: 00010282
RAX: 0000000000000024 RBX: ffff88809704c2a0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c5216 RDI: ffffed1011602ef5
RBP: ffff88808b017828 R08: 0000000000000024 R09: fffffbfff134ada0
R10: fffffbfff134ad9f R11: ffffffff89a56cff R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88821b6fd540
 kernfs_get fs/kernfs/dir.c:492 [inline]
 kernfs_new_node+0xb6/0x120 fs/kernfs/dir.c:700
 kernfs_create_dir_ns+0x52/0x160 fs/kernfs/dir.c:1022
 sysfs_create_dir_ns+0x136/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:89 [inline]
 kobject_add_internal lib/kobject.c:255 [inline]
 kobject_add_internal.cold+0x116/0x662 lib/kobject.c:225
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_add+0x150/0x1c0 lib/kobject.c:442
 device_add+0x3b7/0x17a0 drivers/base/core.c:2065
 hci_register_dev+0x2e8/0x8f0 net/bluetooth/hci_core.c:3307
 __vhci_create_device+0x2c5/0x5d0 drivers/bluetooth/hci_vhci.c:124
 vhci_create_device drivers/bluetooth/hci_vhci.c:148 [inline]
 vhci_get_user drivers/bluetooth/hci_vhci.c:204 [inline]
 vhci_write+0x2d0/0x470 drivers/bluetooth/hci_vhci.c:284
 call_write_iter include/linux/fs.h:1870 [inline]
 new_sync_write+0x4d3/0x770 fs/read_write.c:483
 __vfs_write+0xe1/0x110 fs/read_write.c:496
 vfs_write+0x268/0x5d0 fs/read_write.c:558
 ksys_write+0x14f/0x290 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:620
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441289
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
RSP: 002b:00007ffdcfb21698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441289
RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00000000000184d0 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402000
R13: 0000000000402090 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..