================================================================== BUG: KCSAN: data-race in wg_packet_decrypt_worker / wg_packet_rx_poll write to 0xffff88813b3db888 of 8 bytes by interrupt on cpu 1: counter_validate drivers/net/wireguard/receive.c:327 [inline] wg_packet_rx_poll+0x406/0x11b0 drivers/net/wireguard/receive.c:467 __napi_poll+0x77/0x510 net/core/dev.c:6892 napi_poll net/core/dev.c:6959 [inline] net_rx_action+0x29f/0x680 net/core/dev.c:7036 __do_softirq+0x13c/0x2c3 kernel/softirq.c:345 do_softirq+0x73/0xa0 kernel/softirq.c:248 __local_bh_enable_ip+0x5a/0x60 kernel/softirq.c:198 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_bh+0x33/0x40 kernel/locking/spinlock.c:207 spin_unlock_bh include/linux/spinlock.h:399 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_decrypt_worker+0x732/0x770 drivers/net/wireguard/receive.c:505 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff88813b3db888 of 8 bytes by task 9692 on cpu 0: decrypt_packet drivers/net/wireguard/receive.c:258 [inline] wg_packet_decrypt_worker+0x219/0x770 drivers/net/wireguard/receive.c:507 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9692 Comm: kworker/0:8 Not tainted 5.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: wg-crypt-wg2 wg_packet_decrypt_worker ==================================================================