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BUG: KCSAN: data-race in __mod_timer / __mod_timer

write to 0xffff8881376f1cd0 of 8 bytes by task 78 on cpu 0:
 __mod_timer+0x70d/0xc40 kernel/time/timer.c:1105
 mod_timer+0x1b/0x20 kernel/time/timer.c:1161
 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
 wg_timers_any_authenticated_packet_traversal+0xc0/0xe0 drivers/net/wireguard/timers.c:215
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0xf7/0x360 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

read to 0xffff8881376f1cd0 of 8 bytes by task 29869 on cpu 1:
 __mod_timer+0x7d/0xc40 kernel/time/timer.c:1033
 mod_timer+0x1b/0x20 kernel/time/timer.c:1161
 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
 wg_timers_any_authenticated_packet_traversal+0xc0/0xe0 drivers/net/wireguard/timers.c:215
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:202 [inline]
 wg_packet_handshake_receive_worker+0x4ce/0x660 drivers/net/wireguard/receive.c:213
 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: 0x000000010000a684 -> 0x000000010000a71a

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 29869 Comm: kworker/1:5 Tainted: G        W          6.0.0-rc4-syzkaller-00284-gce888220d5c7-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
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