------------[ cut here ]------------ WARNING: CPU: 0 PID: 9171 at drivers/net/ipvlan/ipvlan_l3s.c:148 ipvlan_unregister_nf_hook+0x9b/0xb0 drivers/net/ipvlan/ipvlan_l3s.c:148 Modules linked in: CPU: 0 PID: 9171 Comm: syz-executor.0 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ipvlan_unregister_nf_hook+0x9b/0xb0 drivers/net/ipvlan/ipvlan_l3s.c:148 Code: d3 cc fc e8 97 d3 cc fc 4c 89 e7 ba 02 00 00 00 48 c7 c6 c0 99 e9 89 e8 d3 24 97 02 5b 5d 41 5c e9 7a d3 cc fc e8 75 d3 cc fc <0f> 0b 5b 5d 41 5c e9 6a d3 cc fc 48 89 ef e8 42 f0 0f fd eb 93 41 RSP: 0000:ffffc90002a0f0f8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802046b580 RSI: ffffffff84a54a0b RDI: 0000000000000003 RBP: ffff888012db5f78 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff84a549bf R11: 0000000000000000 R12: ffff88801a0a0000 R13: ffff888025436000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000001ad8940(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda4b78c000 CR3: 00000000125f0000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ipvlan_l3s_unregister+0xac/0x180 drivers/net/ipvlan/ipvlan_l3s.c:221 ipvlan_set_port_mode+0x43c/0x4d0 drivers/net/ipvlan/ipvlan_main.c:39 ipvlan_link_new+0x697/0xc30 drivers/net/ipvlan/ipvlan_main.c:631 __rtnl_newlink+0x108b/0x1750 net/core/rtnetlink.c:3443 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3502 rtnetlink_rcv_msg+0x498/0xb80 net/core/rtnetlink.c:5564 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x907/0xe40 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2345 ___sys_sendmsg+0xf3/0x170 net/socket.c:2399 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2432 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e229 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc37eeb948 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e229 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000ba6 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000119bf8c