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BUG: KCSAN: data-race in xfrm_lookup_with_ifid / xfrm_lookup_with_ifid

write to 0xffff88813a978908 of 8 bytes by task 3165 on cpu 1:
 xfrm_lookup_with_ifid+0xce7/0x12d0 net/xfrm/xfrm_policy.c:3216
 xfrm_lookup net/xfrm/xfrm_policy.c:3268 [inline]
 xfrm_lookup_route+0x3b/0x100 net/xfrm/xfrm_policy.c:3279
 ip6_dst_lookup_flow+0x98/0xc0 net/ipv6/ip6_output.c:1246
 send6+0x23c/0x3a0 drivers/net/wireguard/socket.c:139
 wg_socket_send_skb_to_peer+0xbd/0x130 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x128/0x320 drivers/net/wireguard/send.c:276
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2405
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2552
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

write to 0xffff88813a978908 of 8 bytes by task 881 on cpu 0:
 xfrm_lookup_with_ifid+0xce7/0x12d0 net/xfrm/xfrm_policy.c:3216
 xfrm_lookup net/xfrm/xfrm_policy.c:3268 [inline]
 xfrm_lookup_route+0x3b/0x100 net/xfrm/xfrm_policy.c:3279
 ip6_dst_lookup_flow+0x98/0xc0 net/ipv6/ip6_output.c:1246
 send6+0x23c/0x3a0 drivers/net/wireguard/socket.c:139
 wg_socket_send_skb_to_peer+0xbd/0x130 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x128/0x320 drivers/net/wireguard/send.c:276
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2405
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2552
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000000645142f4 -> 0x00000000645142f5

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 881 Comm: kworker/0:2 Not tainted 6.3.0-syzkaller-12423-g865fdb08197e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
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