IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
Illegal XDP return value 4294967274, expect packet loss!
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
------------[ cut here ]------------
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
WARNING: CPU: 0 PID: 0 at net/core/filter.c:3647 bpf_warn_invalid_xdp_action net/core/filter.c:3647 [inline]
WARNING: CPU: 0 PID: 0 at net/core/filter.c:3647 bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3643
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.262-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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:183
 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:3647 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3643
RSP: 0018:ffff8880ba407108 EFLAGS: 00010286
RAX: 0000000000000038 RBX: 1ffff11017480e2a RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff878bbcc0 RDI: ffffed1017480e17
RBP: ffffffff88564900 R08: 0000000000000038 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea
R13: ffffc9000b5d4000 R14: 0000000000000000 R15: ffff8880a0e15506
 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
 batadv_bla_send_claim+0x6dd/0xba0 net/batman-adv/bridge_loop_avoidance.c:456
 batadv_bla_send_announce+0x105/0x140 net/batman-adv/bridge_loop_avoidance.c:687
 batadv_bla_get_backbone_gw+0xfd7/0x1310 net/batman-adv/bridge_loop_avoidance.c:556
 batadv_bla_update_own_backbone_gw net/batman-adv/bridge_loop_avoidance.c:583 [inline]
 batadv_bla_tx+0x29a/0x2640 net/batman-adv/bridge_loop_avoidance.c:2122
 batadv_interface_tx+0x3ef/0x11c0 net/batman-adv/soft-interface.c:239
 __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:1657
 mld_send_cr net/ipv6/mcast.c:1953 [inline]
 mld_ifc_timer_expire+0x57c/0xcd0 net/ipv6/mcast.c:2452
 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:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
RSP: 0018:ffffffff88e07e78 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e127c RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff88e74cc4
RBP: ffffffff88f093d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: fffffbfff11ce888
R13: ffffffff88e74440 R14: 0000000000000000 R15: 0000000000000000
 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
 default_idle+0x47/0x370 arch/x86/kernel/process.c:558
 cpuidle_idle_call kernel/sched/idle.c:156 [inline]
 do_idle+0x250/0x3c0 kernel/sched/idle.c:246
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:351
 start_kernel+0x750/0x770 init/main.c:708
 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240
Kernel Offset: disabled
Rebooting in 86400 seconds..