------------[ cut here ]------------ Illegal XDP return value 4294967283, expect packet loss! WARNING: CPU: 1 PID: 20 at net/core/filter.c:8186 bpf_warn_invalid_xdp_action net/core/filter.c:8186 [inline] WARNING: CPU: 1 PID: 20 at net/core/filter.c:8186 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8182 Modules linked in: CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:8186 [inline] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8182 Code: a0 e8 8c 8a 41 83 fc 04 48 c7 c6 e0 e8 8c 8a 48 0f 46 ee e8 03 69 4c fa 44 89 e2 48 c7 c7 20 e9 8c 8a 48 89 ee e8 08 70 cb 01 <0f> 0b 5b 5d 41 5c e9 e6 68 4c fa 66 0f 1f 44 00 00 41 57 41 56 49 RSP: 0018:ffffc90000dc0948 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888011fc0000 RSI: ffffffff815e9b28 RDI: fffff520001b811b RBP: ffffffff8a8ce8a0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815e38ce R11: 0000000000000000 R12: 00000000fffffff3 R13: 00000000fffffff3 R14: 00000000fffffff3 R15: 00000000ffffffd8 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564ffbdb3238 CR3: 000000000b68e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netif_receive_generic_xdp net/core/dev.c:4820 [inline] do_xdp_generic.part.0+0x80b/0xa00 net/core/dev.c:4868 do_xdp_generic net/core/dev.c:4863 [inline] __netif_receive_skb_core+0x11b7/0x3770 net/core/dev.c:5276 __netif_receive_skb_list_core+0x338/0x8e0 net/core/dev.c:5531 __netif_receive_skb_list net/core/dev.c:5598 [inline] netif_receive_skb_list_internal+0x75e/0xd80 net/core/dev.c:5689 netif_receive_skb_list net/core/dev.c:5741 [inline] netif_receive_skb_list+0x54/0x5b0 net/core/dev.c:5731 ieee80211_rx_napi+0x34c/0x3d0 net/mac80211/rx.c:4996 ieee80211_rx include/net/mac80211.h:4582 [inline] ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:783 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 do_softirq.part.0+0xde/0x130 kernel/softirq.c:459 do_softirq kernel/softirq.c:451 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:383 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline] ip6_finish_output2+0x765/0x1500 net/ipv6/ip6_output.c:127 __ip6_finish_output net/ipv6/ip6_output.c:191 [inline] __ip6_finish_output+0x4c1/0x1050 net/ipv6/ip6_output.c:170 ip6_finish_output+0x32/0x200 net/ipv6/ip6_output.c:201 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:224 dst_output include/net/dst.h:450 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0xa99/0x17f0 net/ipv6/ndisc.c:508 ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650 addrconf_dad_work+0xc3f/0x1340 net/ipv6/addrconf.c:4138 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295