batman_adv: batadv0: Removing interface: batadv_slave_1
veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
------------[ cut here ]------------
WARNING: net/ipv6/route.c:4857 at rt6_multipath_rebalance+0x455/0x8b0 net/ipv6/route.c:4857, CPU#1: kworker/u8:5/1005
Modules linked in:
CPU: 1 UID: 0 PID: 1005 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:rt6_multipath_rebalance+0x455/0x8b0 net/ipv6/route.c:4857
Code: ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 85 fe ff ff 4c 89 e7 e8 7d f8 ee f7 e9 78 fe ff ff e8 b3 3d 8b f7 eb 05 e8 ac 3d 8b f7 90 <0f> 0b 90 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c5 c2 4b 01
RSP: 0018:ffffc900037eeea0 EFLAGS: 00010293
RAX: ffffffff8a3469bd RBX: dffffc0000000000 RCX: ffff888025b80000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520006fddcc R12: ffff8880411fc8de
R13: ffff88807abf6090 R14: 0000000000000000 R15: 1ffff1100f57ec12
FS:  0000000000000000(0000) GS:ffff888125b08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e070e84048 CR3: 0000000033674000 CR4: 00000000003526f0
DR0: 0000000002000000 DR1: 0000000000000003 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fib6_ifdown+0x401/0x4c0 net/ipv6/route.c:4977
 fib6_clean_node+0x24d/0x590 net/ipv6/ip6_fib.c:2246
 fib6_walk_continue+0x678/0x910 net/ipv6/ip6_fib.c:2171
 fib6_walk+0x149/0x290 net/ipv6/ip6_fib.c:2219
 fib6_clean_tree net/ipv6/ip6_fib.c:2299 [inline]
 __fib6_clean_all+0x234/0x380 net/ipv6/ip6_fib.c:2315
 rt6_sync_down_dev net/ipv6/route.c:5005 [inline]
 rt6_disable_ip+0x120/0x720 net/ipv6/route.c:5010
 addrconf_ifdown+0x15d/0x1880 net/ipv6/addrconf.c:3853
 addrconf_notify+0x1bc/0x1010 net/ipv6/addrconf.c:-1
 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
 call_netdevice_notifiers net/core/dev.c:2281 [inline]
 netif_close_many+0x29c/0x410 net/core/dev.c:1784
 unregister_netdevice_many_notify+0x7b9/0x1ff0 net/core/dev.c:12124
 unregister_netdevice_many net/core/dev.c:12217 [inline]
 default_device_exit_batch+0x819/0x890 net/core/dev.c:12721
 ops_exit_list net/core/net_namespace.c:204 [inline]
 ops_undo_list+0x525/0x990 net/core/net_namespace.c:251
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>