------------[ cut here ]------------ Illegal XDP return value 4294967274, expect packet loss! WARNING: CPU: 1 PID: 22234 at net/core/filter.c:6967 bpf_warn_invalid_xdp_action net/core/filter.c:6967 [inline] WARNING: CPU: 1 PID: 22234 at net/core/filter.c:6967 bpf_warn_invalid_xdp_action+0x96/0xb0 net/core/filter.c:6963 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 22234 Comm: syz-executor.1 Not tainted 5.7.0-rc1-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+0x11d/0x187 lib/dump_stack.c:118 panic+0x210/0x640 kernel/panic.c:221 __warn.cold+0x36/0x40 kernel/panic.c:582 report_bug+0x1df/0x210 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:175 [inline] fixup_bug arch/x86/kernel/traps.c:170 [inline] do_error_trap+0x9e/0xd0 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:6967 [inline] RIP: 0010:bpf_warn_invalid_xdp_action+0x96/0xb0 net/core/filter.c:6963 Code: a0 f1 65 fc 41 83 fc 04 48 c7 c6 40 89 00 87 48 0f 46 ee e8 1c f0 65 fc 44 89 e2 48 c7 c7 68 89 00 87 48 89 ee e8 c8 60 4d fc <0f> 0b e8 03 f0 65 fc 5b 5d 41 5c e9 3a 0a 74 fc 66 2e 0f 1f 84 00 RSP: 0018:ffffc90000d08d30 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff813901d9 RDI: 0000000000000005 RBP: ffffffff87008938 R08: ffff88805f5fe000 R09: 0000c90000d08bb4 R10: 0000ffff8764e12d R11: 0000c90000d08bb7 R12: 00000000ffffffea R13: ffff88805f5f9100 R14: 000000000000000b R15: ffff8880a8b19800 veth_xdp_rcv_skb drivers/net/veth.c:750 [inline] veth_xdp_rcv drivers/net/veth.c:812 [inline] veth_poll+0x722/0x16f0 drivers/net/veth.c:843 napi_poll net/core/dev.c:6571 [inline] net_rx_action+0x3ad/0xac0 net/core/dev.c:6639 __do_softirq+0x118/0x34a kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082 do_softirq.part.0+0x66/0x70 kernel/softirq.c:337 do_softirq kernel/softirq.c:329 [inline] __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline] __dev_queue_xmit+0xa2e/0x1810 net/core/dev.c:4079 dev_queue_xmit+0x1e/0x30 net/core/dev.c:4085 __bpf_tx_skb net/core/filter.c:2061 [inline] __bpf_redirect_common net/core/filter.c:2100 [inline] __bpf_redirect+0x4bb/0x710 net/core/filter.c:2107 ____bpf_clone_redirect net/core/filter.c:2140 [inline] bpf_clone_redirect+0x19a/0x1f0 net/core/filter.c:2112 bpf_prog_b4791793681dfe03+0x5c/0xed8 bpf_dispatcher_nop_func include/linux/bpf.h:545 [inline] bpf_test_run+0x250/0x560 net/bpf/test_run.c:49 bpf_prog_test_run_skb+0x668/0xad0 net/bpf/test_run.c:438 bpf_prog_test_run kernel/bpf/syscall.c:2771 [inline] __do_sys_bpf+0x1c4d/0x3100 kernel/bpf/syscall.c:3721 __se_sys_bpf kernel/bpf/syscall.c:3661 [inline] __x64_sys_bpf+0x47/0x60 kernel/bpf/syscall.c:3661 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca59 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0a18a88c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004da960 RCX: 000000000045ca59 RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000005c R14: 00000000004c31d5 R15: 00007f0a18a896d4 Kernel Offset: disabled Rebooting in 86400 seconds..