syzbot

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BUG: KCSAN: data-race in wg_packet_decrypt_worker / wg_packet_rx_poll

write to 0xffff888133627888 of 8 bytes by interrupt on cpu 0:
 counter_validate drivers/net/wireguard/receive.c:328 [inline]
 wg_packet_rx_poll+0x417/0x1090 drivers/net/wireguard/receive.c:468
 __napi_poll+0x65/0x390 net/core/dev.c:6413
 napi_poll net/core/dev.c:6480 [inline]
 net_rx_action+0x29e/0x650 net/core/dev.c:6567
 __do_softirq+0x158/0x2e3 kernel/softirq.c:558
 do_softirq+0xb1/0xf0 kernel/softirq.c:459
 __local_bh_enable_ip+0x6f/0x80 kernel/softirq.c:383
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x32/0x40 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:394 [inline]
 ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
 wg_packet_decrypt_worker+0x181/0x770 drivers/net/wireguard/receive.c:506
 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 0xffff888133627888 of 8 bytes by task 893 on cpu 1:
 decrypt_packet drivers/net/wireguard/receive.c:259 [inline]
 wg_packet_decrypt_worker+0x230/0x770 drivers/net/wireguard/receive.c:508
 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: 0x0000000000000975 -> 0x0000000000000976

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 893 Comm: kworker/1:2 Tainted: G        W         5.18.0-syzkaller-01157-g143a6252e1b8-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-crypt-wg1 wg_packet_decrypt_worker
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