WARNING: CPU: 1 PID: 16664 at fs/kernfs/dir.c:494 kernfs_get.part.0+0x73/0x90 /fs/kernfs/dir.c:494
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 16664 Comm: syz-executor.0 Not tainted 4.19.59 #32
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+0x263/0x507 /kernel/panic.c:185
kobject: 'loop5' (00000000ef93b4c2): kobject_uevent_env
kobject: 'loop5' (00000000ef93b4c2): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __warn.cold+0x20/0x4a /kernel/panic.c:540
 report_bug+0x263/0x2b0 /lib/bug.c:186
 fixup_bug /arch/x86/kernel/traps.c:178 [inline]
 fixup_bug /arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 /arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 /arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 /arch/x86/entry/entry_64.S:1013
RIP: 0010:kernfs_get.part.0+0x73/0x90 /fs/kernfs/dir.c:494
Code: e6 e8 31 49 9e ff 45 85 e4 74 1a e8 a7 47 9e ff be 04 00 00 00 48 89 df e8 2a a8 d4 ff f0 ff 03 5b 41 5c 5d c3 e8 8d 47 9e ff <0f> 0b eb dd 48 89 df e8 81 b8 d4 ff eb c1 0f 1f 44 00 00 66 2e 0f
RSP: 0018:ffff88805b6c7838 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff888087186b60 RCX: ffffc90005b59000
RDX: 000000000000464c RSI: ffffffff81ccce93 RDI: 0000000000000005
RBP: ffff88805b6c7848 R08: ffff88805c0f81c0 R09: ffffed1010e30d6d
R10: ffffed1010e30d6c R11: ffff888087186b63 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 kernfs_get /fs/kernfs/dir.c:493 [inline]
 kernfs_new_node+0xb8/0x130 /fs/kernfs/dir.c:697
 kernfs_create_dir_ns+0x52/0x160 /fs/kernfs/dir.c:1020
 sysfs_create_dir_ns+0x131/0x290 /fs/sysfs/dir.c:58
 create_dir /lib/kobject.c:88 [inline]
 kobject_add_internal /lib/kobject.c:247 [inline]
 kobject_add_internal.cold+0xe5/0x5d1 /lib/kobject.c:217
 kobject_add_varg /lib/kobject.c:382 [inline]
 kobject_add+0x150/0x1c0 /lib/kobject.c:426
 device_add+0x3cc/0x1760 /drivers/base/core.c:1885
 hci_register_dev+0x304/0x880 /net/bluetooth/hci_core.c:3198
 __vhci_create_device+0x2d0/0x5a0 /drivers/bluetooth/hci_vhci.c:139
 vhci_create_device /drivers/bluetooth/hci_vhci.c:163 [inline]
 vhci_get_user /drivers/bluetooth/hci_vhci.c:219 [inline]
 vhci_write+0x2d6/0x470 /drivers/bluetooth/hci_vhci.c:299
 call_write_iter /./include/linux/fs.h:1820 [inline]
 new_sync_write /fs/read_write.c:474 [inline]
 __vfs_write+0x587/0x810 /fs/read_write.c:487
 vfs_write+0x20c/0x560 /fs/read_write.c:549
 ksys_write+0x14f/0x2d0 /fs/read_write.c:599
 __do_sys_write /fs/read_write.c:611 [inline]
 __se_sys_write /fs/read_write.c:608 [inline]
 __x64_sys_write+0x73/0xb0 /fs/read_write.c:608
 do_syscall_64+0xfd/0x620 /arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459819
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f00ba831c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459819
RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00ba8326d4
R13: 00000000004c9985 R14: 00000000004e0e40 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..