syzbot

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BUG: KCSAN: data-race in wg_packet_handshake_receive_worker / wg_packet_rx_poll

read-write to 0xffff888139bb7bb0 of 8 bytes by interrupt on cpu 1:
 update_rx_stats drivers/net/wireguard/receive.c:23 [inline]
 wg_packet_consume_data_done drivers/net/wireguard/receive.c:412 [inline]
 wg_packet_rx_poll+0xc6f/0xf80 drivers/net/wireguard/receive.c:474
 __napi_poll+0x60/0x3b0 net/core/dev.c:6496
 napi_poll net/core/dev.c:6563 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6696
 __do_softirq+0xc1/0x265 kernel/softirq.c:571
 do_softirq+0x7e/0xb0 kernel/softirq.c:472
 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:396
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:395 [inline]
 ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
 wg_packet_decrypt_worker+0x6c5/0x700 drivers/net/wireguard/receive.c:499
 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-write to 0xffff888139bb7bb0 of 8 bytes by task 882 on cpu 0:
 update_rx_stats drivers/net/wireguard/receive.c:23 [inline]
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:198 [inline]
 wg_packet_handshake_receive_worker+0x4b2/0x5d0 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: 0x0000000000000244 -> 0x0000000000000294

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 882 Comm: kworker/0:2 Not tainted 6.3.0-syzkaller-12423-g865fdb08197e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
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