------------[ cut here ]------------ WARNING: CPU: 1 PID: 7502 at drivers/net/ipvlan/ipvlan_l3s.c:148 ipvlan_unregister_nf_hook+0x2b8/0x2f0 drivers/net/ipvlan/ipvlan_l3s.c:148 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7502 Comm: syz-executor.0 Not tainted 5.8.0-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+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x4a kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:ipvlan_unregister_nf_hook+0x2b8/0x2f0 drivers/net/ipvlan/ipvlan_l3s.c:148 Code: fc 48 c7 c2 00 c6 c2 88 be 2d 00 00 00 48 c7 c7 40 c7 c2 88 c6 05 80 52 f1 05 01 e8 97 1f 9f fc e9 26 fe ff ff e8 e8 9f b8 fc <0f> 0b 5b 5d 41 5c 41 5d e9 db 9f b8 fc 4c 89 e7 e8 73 b0 f8 fc e9 RSP: 0018:ffffc9000796f0f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff84bbab6d RDX: ffff88808c4ca140 RSI: ffffffff84bbac98 RDI: 0000000000000005 RBP: ffff8880933d0040 R08: 0000000000000001 R09: ffff88808c4caa08 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880a1104840 R13: ffff88809ddf6800 R14: 0000000000000000 R15: 0000000000000001 ipvlan_l3s_unregister+0xac/0x150 drivers/net/ipvlan/ipvlan_l3s.c:221 ipvlan_set_port_mode+0x41f/0x4b0 drivers/net/ipvlan/ipvlan_main.c:37 ipvlan_link_new+0x697/0xc04 drivers/net/ipvlan/ipvlan_main.c:629 __rtnl_newlink+0x108b/0x1740 net/core/rtnetlink.c:3441 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3500 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d239 Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd5b9e4798 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002c0c0 RCX: 000000000045d239 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001190a50 R13: 0000000000000000 R14: 0000000000000b03 R15: 000000000118cf4c Kernel Offset: disabled Rebooting in 86400 seconds..