batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
------------[ cut here ]------------
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
kernel BUG at fs/f2fs/node.c:2780!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Modules linked in:
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
CPU: 0 PID: 8023 Comm: syz-executor.1 Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
task: ffff88809633c140 task.stack: ffff88809efa0000
RIP: 0010:destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780
RSP: 0018:ffff88809efa78c0 EFLAGS: 00010297
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
RAX: ffff88809633c140 RBX: ffff88809a8e37b0 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809a8e37d4
RBP: ffff88809a8e36c0 R08: ffffffff8b9d72a0 R09: 0000000000040639
R10: ffff88809633c9f0 R11: ffff88809633c140 R12: ffff88809a8e37d8
R13: ffffed100843a8f6 R14: ffff88809a8e37b0 R15: ffff8880421d4780
FS:  0000555556931400(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f78792d6aec CR3: 00000000961ac000 CR4: 00000000003406f0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_0
 f2fs_put_super+0x3e1/0x840 fs/f2fs/super.c:835
 generic_shutdown_super+0x144/0x370 fs/super.c:446
 kill_block_super+0x95/0xe0 fs/super.c:1161
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fe4e4d56567
RSP: 002b:00007fffd1573d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe4e4d56567
device veth0_macvtap entered promiscuous mode
RDX: 00007fffd1573e19 RSI: 000000000000000a RDI: 00007fffd1573e10
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
RBP: 00007fffd1573e10 R08: 00000000ffffffff R09: 00007fffd1573be0
R10: 0000555556932903 R11: 0000000000000246 R12: 00007fe4e4dafb24
R13: 00007fffd1574ed0 R14: 0000555556932810 R15: 00007fffd1574f10
Code: 40 6c 00 00 00 00 48 81 c4 d8 03 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 ea 38 89 fe 0f 0b e8 e3 38 89 fe 0f 0b e8 dc 38 89 fe <0f> 0b e8 d5 38 89 fe 0f 0b e8 ce 38 89 fe 48 8b 7c 24 28 e8 e4 
RIP: destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780 RSP: ffff88809efa78c0
---[ end trace 52544188d9c2618b ]---