syzbot

bond_slave_0: left promiscuous mode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 20652 at net/ipv6/route.c:4857 rt6_multipath_rebalance.part.0+0x879/0xfd0 net/ipv6/route.c:4857
Modules linked in:
CPU: 0 UID: 0 PID: 20652 Comm: syz.3.4941 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:rt6_multipath_rebalance.part.0+0x879/0xfd0 net/ipv6/route.c:4857
Code: a4 24 58 06 00 00 31 ff 44 89 e6 e8 c1 bd 7b f7 45 85 e4 0f 84 44 fe ff ff 41 bf ff ff ff ff e9 82 fe ff ff e8 68 c2 7b f7 90 <0f> 0b 90 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 51 c2 7b f7
RSP: 0018:ffffc90003a4ead8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000000000 RCX: ffffc9001da49000
RDX: 0000000000080000 RSI: ffffffff8a3fc8e8 RDI: ffff8880332c8c08
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880566ff000
R13: ffffed100acdfe12 R14: 0000000000000100 R15: 0000000000000001
FS:  00007f9b59e846c0(0000) GS:ffff8881246bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000033c030 CR3: 00000000332c3000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 rt6_multipath_rebalance net/ipv6/route.c:4849 [inline]
 fib6_ifup+0x22c/0x2a0 net/ipv6/route.c:4873
 fib6_clean_node+0x2a7/0x5b0 net/ipv6/ip6_fib.c:2246
 fib6_walk_continue+0x452/0x8d0 net/ipv6/ip6_fib.c:2171
 fib6_walk+0x182/0x370 net/ipv6/ip6_fib.c:2219
 fib6_clean_tree+0xd4/0x110 net/ipv6/ip6_fib.c:2299
 __fib6_clean_all+0x107/0x2d0 net/ipv6/ip6_fib.c:2315
 rt6_sync_up+0xc9/0x170 net/ipv6/route.c:4891
 addrconf_notify+0x1709/0x19e0 net/ipv6/addrconf.c:3728
 notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2229
 netif_state_change+0x165/0x3b0 net/core/dev.c:1583
 do_setlink.constprop.0+0x3570/0x4380 net/core/rtnetlink.c:3390
 rtnl_group_changelink net/core/rtnetlink.c:3775 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3929 [inline]
 rtnl_newlink+0x18e0/0x2000 net/core/rtnetlink.c:4057
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6946
 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg net/socket.c:729 [inline]
 ____sys_sendmsg+0xa98/0xc70 net/socket.c:2614
 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2668
 __sys_sendmsg+0x16d/0x220 net/socket.c:2700
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9b58f8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9b59e84038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9b591b5fa0 RCX: 00007f9b58f8ebe9
RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005
RBP: 00007f9b59011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b591b6038 R14: 00007f9b591b5fa0 R15: 00007ffc98b863a8
 </TASK>