------------[ cut here ]------------
Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 0 PID: 8 at net/core/filter.c:8058 bpf_warn_invalid_xdp_action net/core/filter.c:8058 [inline]
WARNING: CPU: 0 PID: 8 at net/core/filter.c:8058 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8054
Modules linked in:
CPU: 0 PID: 8 Comm: kworker/0:2 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: mld mld_ifc_work
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:8058 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8054
Code: 00 78 69 8a 41 83 fc 04 48 c7 c6 40 78 69 8a 48 0f 46 ee e8 13 b4 5f fa 44 89 e2 48 c7 c7 80 78 69 8a 48 89 ee e8 44 d7 bf 01 <0f> 0b 5b 5d 41 5c e9 f6 b3 5f fa 66 0f 1f 44 00 00 41 57 41 56 49
RSP: 0018:ffffc900000079b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801235d4c0 RSI: ffffffff815ce355 RDI: fffff52000000f28
RBP: ffffffff8a697800 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815c81be R11: 0000000000000000 R12: 00000000ffffffea
R13: ffffc90000007a48 R14: 00000000ffffffea R15: ffff888016d4ce76
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000440 CR3: 000000000bc8e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 veth_xdp_rcv_skb+0x62a/0x1920 drivers/net/veth.c:802
 veth_xdp_rcv+0x3ac/0x810 drivers/net/veth.c:879
 veth_poll+0x134/0x840 drivers/net/veth.c:911
 __napi_poll+0xaf/0x440 net/core/dev.c:6985
 napi_poll net/core/dev.c:7052 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7139
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460
 </IRQ>
 do_softirq kernel/softirq.c:452 [inline]
 __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:746 [inline]
 ip6_finish_output2+0x755/0x1700 net/ipv6/ip6_output.c:118
 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline]
 __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161
 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215
 dst_output include/net/dst.h:448 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 mld_sendpack+0x92a/0xdb0 net/ipv6/mcast.c:1820
 mld_send_cr net/ipv6/mcast.c:2121 [inline]
 mld_ifc_work+0x73b/0xdb0 net/ipv6/mcast.c:2652
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294