netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
------------[ cut here ]------------
WARNING: CPU: 2 PID: 16231 at drivers/net/ipvlan/ipvlan_l3s.c:148 ipvlan_unregister_nf_hook+0x2c8/0x300 drivers/net/ipvlan/ipvlan_l3s.c:148
Modules linked in:
CPU: 2 PID: 16231 Comm: syz-executor.1 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:ipvlan_unregister_nf_hook+0x2c8/0x300 drivers/net/ipvlan/ipvlan_l3s.c:148
Code: ff e8 cc 7b b1 fc 48 89 ef ba 02 00 00 00 48 c7 c6 00 37 0f 8a e8 98 ac 9b 02 5b 5d 41 5c 41 5d e9 ad 7b b1 fc e8 a8 7b b1 fc <0f> 0b 5b 5d 41 5c 41 5d e9 9b 7b b1 fc 4c 89 e7 e8 d3 4a f8 fc e9
RSP: 0018:ffffc90007faf0a8 EFLAGS: 00010216
RAX: 000000000000efcd RBX: 0000000000000000 RCX: ffffc90008014000
RDX: 0000000000040000 RSI: ffffffff84c492e8 RDI: 0000000000000003
RBP: ffff8880266343c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff84c4915c R11: 0000000000000000 R12: ffff8880253b5880
R13: ffff888027fea000 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f03338b4700(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55acba7018 CR3: 000000007235c000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ipvlan_l3s_unregister+0xac/0x150 drivers/net/ipvlan/ipvlan_l3s.c:221
 ipvlan_set_port_mode+0x41f/0x4b0 drivers/net/ipvlan/ipvlan_main.c:39
 ipvlan_link_new+0x68e/0xc00 drivers/net/ipvlan/ipvlan_main.c:631
 __rtnl_newlink+0x106d/0x1750 net/core/rtnetlink.c:3458
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506
 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2510
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1935
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f033633ea39
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f03338b4188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0336441f60 RCX: 00007f033633ea39
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 00007f0336398c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1812e95f R14: 00007f03338b4300 R15: 0000000000022000