------------[ cut here ]------------
Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 1 PID: 16 at net/core/filter.c:7193 bpf_warn_invalid_xdp_action net/core/filter.c:7193 [inline]
WARNING: CPU: 1 PID: 16 at net/core/filter.c:7193 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:7189
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:7193 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:7189
Code: 00 68 21 89 41 83 fc 04 48 c7 c6 40 68 21 89 48 0f 46 ee e8 53 9a 20 fb 44 89 e2 48 c7 c7 80 68 21 89 48 89 ee e8 43 d6 f0 fa <0f> 0b 5b 5d 41 5c e9 36 9a 20 fb 66 0f 1f 44 00 00 41 57 41 56 49
RSP: 0018:ffffc90000d7fa28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880a9662440 RSI: ffffffff815f5a85 RDI: fffff520001aff37
RBP: ffffffff89216800 R08: 0000000000000001 R09: ffff8880ae7318e7
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea
R13: ffff88809dc81800 R14: ffffc90000d7fb58 R15: dffffc0000000000
 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:6688 [inline]
 net_rx_action+0x50d/0xfc0 net/core/dev.c:6758
 __do_softirq+0x1f8/0xb23 kernel/softirq.c:298
 run_ksoftirqd kernel/softirq.c:652 [inline]
 run_ksoftirqd+0xcf/0x170 kernel/softirq.c:644
 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Kernel Offset: disabled
Rebooting in 86400 seconds..