------------[ cut here ]------------
debug_locks && !(lock_is_held(&(&n->tbl->lock)->dep_map) != 0)
WARNING: net/core/neighbour.c:154 at neigh_mark_dead+0x2fb/0x340 net/core/neighbour.c:154, CPU#1: syz.1.2193/18517
Modules linked in:
CPU: 1 UID: 0 PID: 18517 Comm: syz.1.2193 Tainted: G             L     Y syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP, [Y]=FORCED_BIND
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:neigh_mark_dead+0x2fb/0x340 net/core/neighbour.c:154
Code: e8 03 42 80 3c 28 00 74 08 48 89 df e8 4e 7b 7d f8 4c 89 33 5b 41 5c 41 5d 41 5e 41 5f 5d e9 cc ba 31 02 cc e8 c6 a2 0b f8 90 <0f> 0b 90 e9 8f fd ff ff 48 c7 c1 d0 e0 79 90 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000680e908 EFLAGS: 00010283
RAX: ffffffff89bcdeda RBX: ffff88807e536000 RCX: 0000000000080000
RDX: ffffc90018711000 RSI: 0000000000000dd8 RDI: 0000000000000dd9
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000d01d18 R12: ffff88807e53613c
R13: dffffc0000000000 R14: ffff88807e536020 R15: ffff88807e536000
FS:  00007f1332b086c0(0000) GS:ffff888124dbd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f95eef8f4e8 CR3: 000000004c7b8000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 neigh_flush_one+0x27c/0x5a0 net/core/neighbour.c:388
 neigh_flush_dev net/core/neighbour.c:432 [inline]
 neigh_changeaddr+0xd1/0x120 net/core/neighbour.c:456
 ndisc_netdev_event+0x207/0x580 net/ipv6/ndisc.c:1883
 notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:86
 call_netdevice_notifiers_extack net/core/dev.c:2349 [inline]
 call_netdevice_notifiers+0x90/0xd0 net/core/dev.c:2363
 do_setlink+0xca9/0x47a0 net/core/rtnetlink.c:3280
 rtnl_group_changelink net/core/rtnetlink.c:3946 [inline]
 __rtnl_newlink net/core/rtnetlink.c:4112 [inline]
 rtnl_newlink+0x147c/0x1c30 net/core/rtnetlink.c:4242
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7159
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2572
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x7c3/0xae0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec+0x14e/0x190 net/socket.c:800
 __sock_sendmsg net/socket.c:818 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2715
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2769
 __sys_sendmmsg+0x273/0x4d0 net/socket.c:2858
 __do_sys_sendmmsg net/socket.c:2885 [inline]
 __se_sys_sendmmsg net/socket.c:2882 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2882
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1331b9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1332b08028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f1331e25fa0 RCX: 00007f1331b9e159
RDX: 040000000000009f RSI: 00002000000002c0 RDI: 000000000000000b
RBP: 00007f1331c3506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1331e26038 R14: 00007f1331e25fa0 R15: 00007ffcff5c4968
 </TASK>