------------[ cut here ]------------ Illegal XDP return value 16128, expect packet loss! WARNING: CPU: 1 PID: 31 at net/core/filter.c:8186 bpf_warn_invalid_xdp_action net/core/filter.c:8186 [inline] WARNING: CPU: 1 PID: 31 at net/core/filter.c:8186 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8182 Modules linked in: CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: mld mld_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 63 67 4c fa 44 89 e2 48 c7 c7 20 e9 8c 8a 48 89 ee e8 68 6e cb 01 <0f> 0b 5b 5d 41 5c e9 46 67 4c fa 66 0f 1f 44 00 00 41 57 41 56 49 RSP: 0018:ffffc90000dc09b0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880143f5580 RSI: ffffffff815e9b28 RDI: fffff520001b8128 RBP: ffffffff8a8ce8a0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815e38ce R11: 0000000000000000 R12: 0000000000003f00 R13: ffffc90000dc0a48 R14: 0000000000003f00 R15: ffff888072e35bf6 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb8595c6c18 CR3: 0000000070445000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: veth_xdp_rcv_skb+0x691/0x1ba0 drivers/net/veth.c:804 veth_xdp_rcv+0x3ac/0x810 drivers/net/veth.c:881 veth_poll+0x134/0x850 drivers/net/veth.c:913 __napi_poll+0xaf/0x440 net/core/dev.c:7010 napi_poll net/core/dev.c:7077 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7164 __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] NF_HOOK include/linux/netfilter.h:301 [inline] mld_sendpack+0x9a1/0xe40 net/ipv6/mcast.c:1826 mld_send_initial_cr.part.0+0x194/0x230 net/ipv6/mcast.c:2245 mld_send_initial_cr net/ipv6/mcast.c:1232 [inline] mld_dad_work+0x1d3/0x690 net/ipv6/mcast.c:2268 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