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Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 1 PID: 16 at net/core/filter.c:7522 bpf_warn_invalid_xdp_action net/core/filter.c:7522 [inline]
WARNING: CPU: 1 PID: 16 at net/core/filter.c:7522 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:7518
Modules linked in:
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.9.0-rc6-next-20200924-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:7522 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:7518
Code: a0 22 68 89 41 83 fc 04 48 c7 c6 e0 22 68 89 48 0f 46 ee e8 e3 fc 10 fb 44 89 e2 48 c7 c7 20 23 68 89 48 89 ee e8 9c 89 b1 01 <0f> 0b 5b 5d 41 5c e9 c6 fc 10 fb 66 0f 1f 44 00 00 41 57 41 56 49
RSP: 0018:ffffc90000d7fa40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880a96e8440 RSI: ffffffff815e0005 RDI: fffff520001aff3a
RBP: ffffffff896822a0 R08: 0000000000000001 R09: ffff8880ae5319a7
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea
R13: ffff8880a753a000 R14: ffffc90000d7fb70 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002062b000 CR3: 000000000a28e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 veth_xdp_rcv_skb drivers/net/veth.c:747 [inline]
 veth_xdp_rcv drivers/net/veth.c:812 [inline]
 veth_poll+0x1307/0x3120 drivers/net/veth.c:843
 napi_poll net/core/dev.c:6735 [inline]
 net_rx_action+0x587/0x1320 net/core/dev.c:6805
 __do_softirq+0x203/0xab6 kernel/softirq.c:298
 run_ksoftirqd kernel/softirq.c:653 [inline]
 run_ksoftirqd+0xcf/0x170 kernel/softirq.c:645
 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
 kthread+0x3af/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296