IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
Illegal XDP return value 2208975216, expect packet loss!
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6352 at net/core/filter.c:3649 bpf_warn_invalid_xdp_action net/core/filter.c:3649 [inline]
WARNING: CPU: 1 PID: 6352 at net/core/filter.c:3649 bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3645
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 6352 Comm: sshd Not tainted 4.14.175-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+0x13e/0x194 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 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:963
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:3649 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action.cold+0x3c/0x43 net/core/filter.c:3645
RSP: 0018:ffff8880aeb07640 EFLAGS: 00010282
RAX: 0000000000000038 RBX: 0000000083aa4970 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff86ac07e0 RDI: ffffed1015d60ebe
RBP: ffffffff8738d300 R08: 0000000000000038 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000083aa4970
R13: 0000000000000000 R14: ffff8880a82dc606 R15: ffff8880a82dc5c4
 netif_receive_generic_xdp net/core/dev.c:3959 [inline]
 do_xdp_generic.part.0+0x513/0x9e0 net/core/dev.c:4004
 do_xdp_generic net/core/dev.c:4042 [inline]
 netif_rx_internal+0x330/0x800 net/core/dev.c:4042
 dev_forward_skb+0x39/0x50 net/core/dev.c:1870
 veth_xmit+0xf1/0x300 drivers/net/veth.c:114
 __netdev_start_xmit include/linux/netdevice.h:4039 [inline]
 netdev_start_xmit include/linux/netdevice.h:4048 [inline]
 xmit_one net/core/dev.c:3009 [inline]
 dev_hard_start_xmit+0x186/0x890 net/core/dev.c:3025
 __dev_queue_xmit+0x1d91/0x25c0 net/core/dev.c:3525
 neigh_hh_output include/net/neighbour.h:490 [inline]
 neigh_output include/net/neighbour.h:498 [inline]
 ip6_finish_output2+0x1085/0x2150 net/ipv6/ip6_output.c:120
 ip6_finish_output+0x4d9/0xaf0 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 ip6_output+0x1c9/0x650 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:462 [inline]
 NF_HOOK include/linux/netfilter.h:250 [inline]
 NF_HOOK include/linux/netfilter.h:244 [inline]
 mld_sendpack+0x86d/0xca0 net/ipv6/mcast.c:1660
 mld_send_cr net/ipv6/mcast.c:1956 [inline]
 mld_ifc_timer_expire+0x3b0/0x7b0 net/ipv6/mcast.c:2455
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1015
 </IRQ>
 do_softirq.part.0+0x103/0x160 kernel/softirq.c:332
 do_softirq kernel/softirq.c:324 [inline]
 __local_bh_enable_ip+0x149/0x190 kernel/softirq.c:185
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:725 [inline]
 ip_finish_output2+0x7ae/0x14a0 net/ipv4/ip_output.c:231
 ip_finish_output+0x556/0xc30 net/ipv4/ip_output.c:317
 NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 ip_output+0x1c2/0x520 net/ipv4/ip_output.c:405
 dst_output include/net/dst.h:462 [inline]
 ip_local_out+0x93/0x170 net/ipv4/ip_output.c:124
 ip_queue_xmit+0x7b2/0x1b20 net/ipv4/ip_output.c:504
 __tcp_transmit_skb+0x1654/0x2dd0 net/ipv4/tcp_output.c:1131
 tcp_transmit_skb net/ipv4/tcp_output.c:1147 [inline]
 tcp_write_xmit+0x56a/0x4a60 net/ipv4/tcp_output.c:2391
 __tcp_push_pending_frames+0x9c/0x240 net/ipv4/tcp_output.c:2572
 tcp_push+0x3fd/0x5f0 net/ipv4/tcp.c:715
 tcp_sendmsg_locked+0x218c/0x2fd0 net/ipv4/tcp.c:1426
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
 inet_sendmsg+0x116/0x4d0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xc5/0x100 net/socket.c:656
 sock_write_iter+0x22c/0x370 net/socket.c:925
 call_write_iter include/linux/fs.h:1778 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44e/0x630 fs/read_write.c:482
 vfs_write+0x192/0x4e0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f3a3ad9b970
RSP: 002b:00007ffeb59faf58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000034 RCX: 00007f3a3ad9b970
RDX: 0000000000000034 RSI: 00005603a38bf3ec RDI: 0000000000000003
RBP: 00005603a38b1070 R08: 00007ffeb59fb010 R09: 0000000000000100
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeb59fafef R14: 00005603a1ba5be7 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..