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BUG: KCSAN: data-race in insert_work / wq_worker_running

read-write to 0xffff888237c2a7e0 of 4 bytes by task 36 on cpu 0:
 wq_worker_running+0x96/0xe0 kernel/workqueue.c:880
 schedule_timeout+0xc1/0x290 kernel/time/timer.c:1935
 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:569 [inline]
 synchronize_rcu_expedited_wait+0x22a/0xbc0 kernel/rcu/tree_exp.h:620
 rcu_exp_wait_wake kernel/rcu/tree_exp.h:685 [inline]
 rcu_exp_sel_wait_wake+0x355/0x630 kernel/rcu/tree_exp.h:719
 wait_rcu_exp_gp+0x1a/0x20 kernel/rcu/tree_exp.h:510
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

read to 0xffff888237c2a7e0 of 4 bytes by interrupt on cpu 1:
 __need_more_worker kernel/workqueue.c:785 [inline]
 insert_work+0x10e/0x190 kernel/workqueue.c:1365
 __queue_work+0x69e/0x8e0 kernel/workqueue.c:1517
 queue_work_on+0x7e/0xe0 kernel/workqueue.c:1545
 wg_queue_enqueue_per_device_and_peer drivers/net/wireguard/queueing.h:179 [inline]
 wg_packet_consume_data drivers/net/wireguard/receive.c:533 [inline]
 wg_packet_receive+0xb8f/0xdb0 drivers/net/wireguard/receive.c:583
 wg_receive+0x4a/0x70 drivers/net/wireguard/socket.c:326
 udpv6_queue_rcv_one_skb+0xa62/0xb70 net/ipv6/udp.c:704
 udpv6_queue_rcv_skb+0x2c1/0x2e0 net/ipv6/udp.c:762
 udp6_unicast_rcv_skb+0x16b/0x190 net/ipv6/udp.c:905
 __udp6_lib_rcv+0x7ec/0x910 net/ipv6/udp.c:990
 udpv6_rcv+0x1d/0x20 net/ipv6/udp.c:1098
 ip6_protocol_deliver_rcu+0x89e/0xd40 net/ipv6/ip6_input.c:439
 ip6_input_finish net/ipv6/ip6_input.c:484 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip6_input+0xca/0x180 net/ipv6/ip6_input.c:493
 dst_input include/net/dst.h:461 [inline]
 ip6_rcv_finish+0x1e9/0x2d0 net/ipv6/ip6_input.c:79
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ipv6_rcv+0x85/0x140 net/ipv6/ip6_input.c:309
 __netif_receive_skb_one_core net/core/dev.c:5484 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5598
 process_backlog+0x23f/0x3b0 net/core/dev.c:5926
 __napi_poll+0x65/0x390 net/core/dev.c:6492
 napi_poll net/core/dev.c:6559 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6670
 __do_softirq+0x158/0x2e3 kernel/softirq.c:571
 do_softirq+0xb1/0xf0 kernel/softirq.c:472
 __local_bh_enable_ip+0x6f/0x80 kernel/softirq.c:396
 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:257 [inline]
 _raw_read_unlock_bh+0x17/0x20 kernel/locking/spinlock.c:284
 wg_socket_send_skb_to_peer+0x107/0x120 drivers/net/wireguard/socket.c:184
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x142/0x360 drivers/net/wireguard/send.c:276
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1914 Comm: kworker/1:4 Not tainted 5.19.0-rc7-syzkaller-00199-g515f71412bb7-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
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