batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready
------------[ cut here ]------------
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
WARNING: CPU: 0 PID: 9398 at fs/btrfs/qgroup.c:3095 btrfs_qgroup_free_meta+0x3db/0x4d0 fs/btrfs/qgroup.c:3095
Kernel panic - not syncing: panic_on_warn set ...

batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
CPU: 0 PID: 9398 Comm: syz-executor.2 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:btrfs_qgroup_free_meta+0x3db/0x4d0 fs/btrfs/qgroup.c:3095
RSP: 0018:ffff888049047670 EFLAGS: 00010212
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
RAX: 0000000000040000 RBX: ffff8880ab654100 RCX: ffffc90007bf8000
RDX: 0000000000000ae1 RSI: ffffffff82b3af0b RDI: ffff8880ab654a20
RBP: 0000000000003000 R08: ffffffff8b9c0de8 R09: 0000000000000003
R10: 0000000000000000 R11: ffff8880b3e54240 R12: ffff888047075e00
R13: 0000000000000005 R14: ffff8880ab654658 R15: 0000000000080000
 btrfs_subvolume_reserve_metadata+0x1e6/0x2f0 fs/btrfs/extent-tree.c:5980
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 create_subvol+0x28a/0x1930 fs/btrfs/ioctl.c:466
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
 btrfs_mksubvol+0xcb3/0x1000 fs/btrfs/ioctl.c:895
 btrfs_ioctl_snap_create_transid+0x28a/0x420 fs/btrfs/ioctl.c:1677
 btrfs_ioctl_snap_create_v2+0x22f/0x340 fs/btrfs/ioctl.c:1774
batman_adv: batadv0: Interface activated: batadv_slave_1
 btrfs_ioctl+0x1806/0x5b20 fs/btrfs/ioctl.c:5618
BTRFS error (device loop2): fail to start transaction for status update: -28
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f35769890a9
Bluetooth: hci3 command 0x0419 tx timeout
RSP: 002b:00007f3574efb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Bluetooth: hci1 command 0x0419 tx timeout
RAX: ffffffffffffffda RBX: 00007f3576aa8f80 RCX: 00007f35769890a9
RDX: 0000000020000a80 RSI: 0000000050009418 RDI: 0000000000000004
RBP: 00007f35769e4ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff5ef77d0f R14: 00007f3574efb300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..