================================================================== BUG: KCSAN: data-race in __mod_timer / __mod_timer write to 0xffff8880241655c8 of 8 bytes by task 19288 on cpu 1: __mod_timer+0x9ae/0xbf0 kernel/time/timer.c:1010 mod_timer+0x1b/0x20 kernel/time/timer.c:1106 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline] wg_timers_any_authenticated_packet_traversal+0xc5/0xf0 drivers/net/wireguard/timers.c:215 wg_packet_create_data_done drivers/net/wireguard/send.c:248 [inline] wg_packet_tx_worker+0x199/0x4c0 drivers/net/wireguard/send.c:280 process_one_work+0x3e1/0x950 kernel/workqueue.c:2272 worker_thread+0x635/0xb90 kernel/workqueue.c:2418 kthread+0x1fa/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 read to 0xffff8880241655c8 of 8 bytes by task 23589 on cpu 0: __mod_timer+0x74/0xbf0 kernel/time/timer.c:978 mod_timer+0x1b/0x20 kernel/time/timer.c:1106 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline] wg_timers_any_authenticated_packet_traversal+0xc5/0xf0 drivers/net/wireguard/timers.c:215 wg_receive_handshake_packet drivers/net/wireguard/receive.c:209 [inline] wg_packet_handshake_receive_worker+0x3d2/0x440 drivers/net/wireguard/receive.c:220 process_one_work+0x3e1/0x950 kernel/workqueue.c:2272 worker_thread+0x635/0xb90 kernel/workqueue.c:2418 kthread+0x1fa/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23589 Comm: kworker/0:0 Not tainted 5.10.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker ==================================================================