IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
kobject_add_internal failed for hci2 (error: -2 parent: bluetooth)
Bluetooth: Can't register HCI device
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8364 at fs/kernfs/dir.c:494 kernfs_get+0x58/0x70 fs/kernfs/dir.c:494
kobject: 'loop2' (ffff8880a490f7a0): fill_kobj_path: path = '/devices/virtual/block/loop2'
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8364 Comm: syz-executor.4 Not tainted 4.14.126 #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:960
RIP: 0010:kernfs_get+0x58/0x70 fs/kernfs/dir.c:494
RSP: 0018:ffff88809c367460 EFLAGS: 00010297
RAX: ffff88807afe65c0 RBX: ffff888099406d20 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888099406d20
RBP: ffff88809c367468 R08: ffff88807afe65c0 R09: 0000000000000001
kobject: 'loop5' (ffff8880a4a69260): kobject_uevent_env
R10: 0000000000000000 R11: ffff88807afe65c0 R12: ffff8880894f49a0
R13: ffff88808ae42d00 R14: 0000000000000001 R15: 00000000000041ed
 kernfs_new_node+0x95/0xf0 fs/kernfs/dir.c:680
 kernfs_create_dir_ns+0x41/0x140 fs/kernfs/dir.c:999
 sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229
 kobject_add_internal lib/kobject.c:205 [inline]
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x383/0x1490 drivers/base/core.c:1809