------------[ cut here ]------------
Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 0 PID: 6492 at net/core/filter.c:8188 bpf_warn_invalid_xdp_action net/core/filter.c:8188 [inline]
WARNING: CPU: 0 PID: 6492 at net/core/filter.c:8188 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8184
Modules linked in:
CPU: 0 PID: 6492 Comm: syz-executor.4 Not tainted 5.16.0-rc8-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:8188 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8184
Code: 80 77 ae 8a 41 83 fc 04 48 c7 c6 c0 77 ae 8a 48 0f 46 ee e8 c3 7e 42 fa 44 89 e2 48 c7 c7 00 78 ae 8a 48 89 ee e8 fd 6c cb 01 <0f> 0b 5b 5d 41 5c e9 a6 7e 42 fa 66 0f 1f 44 00 00 41 57 41 56 49
RSP: 0018:ffffc90000007a58 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888053b58000 RSI: ffffffff815f0948 RDI: fffff52000000f3d
RBP: ffffffff8aae7780 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff815ea6ee R11: 0000000000000000 R12: 00000000ffffffea
R13: 00000000ffffffea R14: 00000000ffffffea R15: 00000000ffffff90
FS:  00007ff6313d9700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff632b78090 CR3: 000000002ebcf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 netif_receive_generic_xdp net/core/dev.c:4830 [inline]
 do_xdp_generic.part.0+0x80b/0xa00 net/core/dev.c:4878
 do_xdp_generic net/core/dev.c:4873 [inline]
 __netif_receive_skb_core+0x11b7/0x3770 net/core/dev.c:5286
 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5463
 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5579
 process_backlog+0x2a5/0x6c0 net/core/dev.c:6455
 __napi_poll+0xaf/0x440 net/core/dev.c:7023
 napi_poll net/core/dev.c:7090 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7177
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:skb_metadata_set include/linux/skbuff.h:3931 [inline]
RIP: 0010:skb_metadata_clear include/linux/skbuff.h:3936 [inline]
RIP: 0010:pskb_expand_head+0x51f/0x1060 net/core/skbuff.c:1754
Code: 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d1 09 00 00 8b 83 c4 00 00 00 48 01 c5 48 b8 00 00 00 00 00 fc ff df <48> 8d 7d 01 48 89 fa 48 c1 ea 03 0f b6 04 02 48 89 fa 83 e2 07 38
RSP: 0018:ffffc9000565f6f0 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: ffff88802e5bf280 RCX: ffff88802e5bf344
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888042f248e0
RBP: ffff888042f248c0 R08: 0000000000000001 R09: ffff888042f248e3
R10: ffffed10085e491c R11: 00000000ffffffff R12: ffff888042f248e0
R13: 0000000000000000 R14: ffff888042f27400 R15: 00000000000000c0
 skb_ensure_writable net/core/skbuff.c:5695 [inline]
 skb_ensure_writable+0x2c7/0x450 net/core/skbuff.c:5687
 __bpf_try_make_writable net/core/filter.c:1655 [inline]
 bpf_try_make_writable net/core/filter.c:1661 [inline]
 bpf_try_make_head_writable net/core/filter.c:1669 [inline]
 ____bpf_clone_redirect net/core/filter.c:2423 [inline]
 bpf_clone_redirect+0x125/0x420 net/core/filter.c:2401
 bpf_prog_a467eebe3b6cb835+0x59/0xb78
 bpf_dispatcher_nop_func include/linux/bpf.h:727 [inline]
 __bpf_prog_run include/linux/filter.h:626 [inline]
 bpf_prog_run include/linux/filter.h:633 [inline]
 bpf_test_run+0x381/0x980 net/bpf/test_run.c:120
 bpf_prog_test_run_skb+0xb32/0x1dd0 net/bpf/test_run.c:666
 bpf_prog_test_run kernel/bpf/syscall.c:3349 [inline]
 __sys_bpf+0x1823/0x5950 kernel/bpf/syscall.c:4651
 __do_sys_bpf kernel/bpf/syscall.c:4737 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4735 [inline]
 __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4735
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff632a63e99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6313d9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff632b76f60 RCX: 00007ff632a63e99
RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007ff632abdff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd02b682f R14: 00007ff6313d9300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	14 02                	adc    $0x2,%al
   2:	48 89 c8             	mov    %rcx,%rax
   5:	83 e0 07             	and    $0x7,%eax
   8:	83 c0 03             	add    $0x3,%eax
   b:	38 d0                	cmp    %dl,%al
   d:	7c 08                	jl     0x17
   f:	84 d2                	test   %dl,%dl
  11:	0f 85 d1 09 00 00    	jne    0x9e8
  17:	8b 83 c4 00 00 00    	mov    0xc4(%rbx),%eax
  1d:	48 01 c5             	add    %rax,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	48 8d 7d 01          	lea    0x1(%rbp),%rdi <-- trapping instruction
  2e:	48 89 fa             	mov    %rdi,%rdx
  31:	48 c1 ea 03          	shr    $0x3,%rdx
  35:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	83 e2 07             	and    $0x7,%edx
  3f:	38                   	.byte 0x38