------------[ cut here ]------------
Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 1 PID: 249 at net/core/filter.c:6877 bpf_warn_invalid_xdp_action net/core/filter.c:6877 [inline]
WARNING: CPU: 1 PID: 249 at net/core/filter.c:6877 bpf_warn_invalid_xdp_action+0x77/0x90 net/core/filter.c:6873
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 249 Comm: kworker/u4:4 Not tainted 5.5.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:6877 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x77/0x90 net/core/filter.c:6873
Code: 60 31 d7 88 41 83 fc 04 48 c7 c6 a0 31 d7 88 4c 0f 46 ee e8 5b 33 47 fb 44 89 e2 48 c7 c7 e0 31 d7 88 4c 89 ee e8 d8 e2 17 fb <0f> 0b e8 42 33 47 fb 5b 41 5c 41 5d 5d c3 90 66 2e 0f 1f 84 00 00
RSP: 0018:ffffc90000da8be0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff815e5e56 RDI: fffff520001b516e
RBP: ffffc90000da8bf8 R08: ffff8880a88824c0 R09: fffffbfff16611b6
R10: fffffbfff16611b5 R11: ffffffff8b308daf R12: 00000000ffffffea
R13: ffffffff88d73160 R14: 00000000ffffffea R15: dffffc0000000000
 veth_xdp_rcv_skb drivers/net/veth.c:667 [inline]
 veth_xdp_rcv drivers/net/veth.c:726 [inline]
 veth_poll+0xa14/0x2bc0 drivers/net/veth.c:758
 napi_poll net/core/dev.c:6530 [inline]
 net_rx_action+0x508/0x1120 net/core/dev.c:6598
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:337
 do_softirq kernel/softirq.c:329 [inline]
 __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:706 [inline]
 __dev_queue_xmit+0x175c/0x35c0 net/core/dev.c:4040
 dev_queue_xmit+0x18/0x20 net/core/dev.c:4046
 batadv_send_skb_packet+0x4cc/0x680 net/batman-adv/send.c:108
 batadv_send_broadcast_skb+0x25/0x30 net/batman-adv/send.c:127
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:393 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:419 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x69a/0x7c0 net/batman-adv/bat_iv_ogm.c:1706
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264
 worker_thread+0x98/0xe40 kernel/workqueue.c:2410
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..