veth1_vlan: Device is already in use.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
veth1_vlan: Device is already in use.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9056 at drivers/net/ipvlan/ipvlan_main.c:65 ipvlan_unregister_nf_hook.cold+0x11/0x25 drivers/net/ipvlan/ipvlan_main.c:65
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 9056 Comm: syz-executor.4 Not tainted 4.19.134-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x61 kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ipvlan_unregister_nf_hook.cold+0x11/0x25 drivers/net/ipvlan/ipvlan_main.c:65
Code: 06 46 fd e9 1b ff ff ff 48 89 df e8 0e 09 46 fd eb b9 e8 37 06 46 fd eb 83 e8 40 e9 0f fd 48 c7 c7 e0 b3 f4 87 e8 e3 f6 fa fc <0f> 0b e9 80 a2 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 53 48
RSP: 0018:ffff8880777b6ff8 EFLAGS: 00010286
RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8154cf01 RDI: ffffed100eef6df1
RBP: ffff888088fbc180 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880959b6f40
R13: ffff8880a43bbb00 R14: 0000000000000000 R15: 0000000000000001
 ipvlan_set_port_mode+0x53a/0x650 drivers/net/ipvlan/ipvlan_main.c:106
 ipvlan_link_new+0x68d/0xc40 drivers/net/ipvlan/ipvlan_main.c:676
 rtnl_newlink+0x1027/0x15a0 net/core/rtnetlink.c:3141
 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4777
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c369
Code: 8d b6 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 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe16629448 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002b700 RCX: 000000000045c369
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000790730
R13: 0000000000000000 R14: 0000000000000adc R15: 000000000078bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..