IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
==================================================================
BUG: KCSAN: data-race in skb_queue_tail / wg_packet_handshake_receive_worker

read-write to 0xffff88810cf49c30 of 4 bytes by interrupt on cpu 1:
 __skb_insert include/linux/skbuff.h:1911 [inline]
 __skb_queue_before include/linux/skbuff.h:2016 [inline]
 __skb_queue_tail include/linux/skbuff.h:2049 [inline]
 skb_queue_tail+0x75/0x90 net/core/skbuff.c:3140
 wg_packet_receive+0x4ff/0xca0 drivers/net/wireguard/receive.c:569
 wg_receive+0x4a/0x70 drivers/net/wireguard/socket.c:325
 udp_queue_rcv_one_skb+0x6eb/0x7e0 net/ipv4/udp.c:2093
 udp_queue_rcv_skb+0xd2/0x430 net/ipv4/udp.c:2167
 udp_unicast_rcv_skb net/ipv4/udp.c:2325 [inline]
 __udp4_lib_rcv+0x1354/0x1a80 net/ipv4/udp.c:2394
 udp_rcv+0x1d/0x20 net/ipv4/udp.c:2564
 ip_protocol_deliver_rcu+0x1f9/0x3e0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_local_deliver+0x1c0/0x280 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:449 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:428 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_rcv+0x1a6/0x250 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core net/core/dev.c:5311 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5425
 process_backlog+0x23f/0x3d0 net/core/dev.c:6315
 napi_poll+0x178/0x4c0 net/core/dev.c:6759
 net_rx_action+0x17a/0x480 net/core/dev.c:6829
 __do_softirq+0x12c/0x2b1 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x32/0x40 arch/x86/kernel/irq_64.c:77
 do_softirq kernel/softirq.c:343 [inline]
 __local_bh_enable_ip+0xba/0xd0 kernel/softirq.c:195
 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:251 [inline]
 _raw_read_unlock_bh+0x17/0x20 kernel/locking/spinlock.c:279
 wg_socket_send_skb_to_peer drivers/net/wireguard/socket.c:183 [inline]
 wg_socket_send_buffer_to_peer+0x1b6/0x1e0 drivers/net/wireguard/socket.c:199
 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:40 [inline]
 wg_packet_handshake_send_worker+0xf9/0x140 drivers/net/wireguard/send.c:51
 process_one_work+0x3e1/0x950 kernel/workqueue.c:2272
 worker_thread+0x635/0xb90 kernel/workqueue.c:2418
 kthread+0x1fd/0x220 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

read to 0xffff88810cf49c30 of 4 bytes by task 3710 on cpu 0:
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:119 [inline]
 wg_packet_handshake_receive_worker+0xbd/0x440 drivers/net/wireguard/receive.c:220
 process_one_work+0x3e1/0x950 kernel/workqueue.c:2272
 worker_thread+0x635/0xb90 kernel/workqueue.c:2418
 kthread+0x1fd/0x220 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3710 Comm: kworker/0:2 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker
==================================================================