IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
Illegal XDP return value 4294967274, expect packet loss!
------------[ cut here ]------------
WARNING: CPU: 1 PID: 34 at net/core/filter.c:3646 bpf_warn_invalid_xdp_action net/core/filter.c:3646 [inline]
WARNING: CPU: 1 PID: 34 at net/core/filter.c:3646 bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3642
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 34 Comm: kworker/u4:2 Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:3646 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3642
RSP: 0018:ffff8880ba5074f0 EFLAGS: 00010282
RAX: 0000000000000038 RBX: 1ffff110174a0ea7 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff878bbbc0 RDI: ffffed10174a0e94
RBP: ffffffff88562c80 R08: 0000000000000038 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea
R13: ffffc900127d5000 R14: 0000000000000000 R15: ffff88809a71bb46
 netif_receive_generic_xdp+0x554/0x950 net/core/dev.c:3956
 do_xdp_generic.part.0+0x22/0xc0 net/core/dev.c:4001
 do_xdp_generic net/core/dev.c:4039 [inline]
 netif_rx_internal+0x219/0x800 net/core/dev.c:4039
 dev_forward_skb+0x39/0x50 net/core/dev.c:1866
 veth_xmit+0xf1/0x300 drivers/net/veth.c:114
 __netdev_start_xmit include/linux/netdevice.h:4051 [inline]
 netdev_start_xmit include/linux/netdevice.h:4060 [inline]
 xmit_one net/core/dev.c:3005 [inline]
 dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521
 neigh_resolve_output+0x4e5/0x870 net/core/neighbour.c:1369
 neigh_output include/net/neighbour.h:500 [inline]
 ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120
 ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192
 NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209
 dst_output include/net/dst.h:470 [inline]
 NF_HOOK include/linux/netfilter.h:250 [inline]
 mld_sendpack+0x5fe/0xea0 net/ipv6/mcast.c:1660
 mld_send_cr net/ipv6/mcast.c:1956 [inline]
 mld_ifc_timer_expire+0x57c/0xcd0 net/ipv6/mcast.c:2455
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
 __run_timers kernel/time/timer.c:1637 [inline]
 run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_release+0x41e/0x870 kernel/locking/lockdep.c:4020
RSP: 0018:ffff8880b56b7b68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1259 RBX: 1ffff11016ad6f70 RCX: 1ffff11016acb958
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: 0000000000000286
RBP: ffff8880b565c1c0 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000000 R11: ffff8880b565c1c0 R12: f305b3f482523f00
R13: 0000000000000003 R14: ffff8880b565c1c0 R15: 0000000000000004
 rcu_lock_release include/linux/rcupdate.h:247 [inline]
 rcu_read_unlock include/linux/rcupdate.h:685 [inline]
 inet_twsk_purge+0x3be/0x5a0 net/ipv4/inet_timewait_sock.c:300
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:145
 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..