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BUG: KCSAN: data-race in __mod_timer / __mod_timer

write to 0xffff888124c79d70 of 8 bytes by task 3159 on cpu 1:
 __mod_timer+0x7a3/0x860 kernel/time/timer.c:1073
 mod_timer+0x1f/0x30 kernel/time/timer.c:1190
 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
 wg_timers_any_authenticated_packet_traversal+0xc4/0xf0 drivers/net/wireguard/timers.c:215
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0xeb/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

read to 0xffff888124c79d70 of 8 bytes by task 882 on cpu 0:
 __mod_timer+0x6e/0x860 kernel/time/timer.c:1033
 mod_timer+0x1f/0x30 kernel/time/timer.c:1190
 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
 wg_timers_any_authenticated_packet_traversal+0xc4/0xf0 drivers/net/wireguard/timers.c:215
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:202 [inline]
 wg_packet_handshake_receive_worker+0x4ce/0x5d0 drivers/net/wireguard/receive.c:213
 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: 0x00000000ffff9a03 -> 0x00000000ffff9a04

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 882 Comm: kworker/0:2 Not tainted 6.4.0-rc4-syzkaller-00078-g929ed21dfdb6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
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