EXT4-fs (loop0): last error at time 1781542860: __ext4_get_inode_loc:4885
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BUG: KCSAN: data-race in kick_pool / wq_worker_running

read-write to 0xffff888237c2a8e4 of 4 bytes by task 3662 on cpu 0:
 wq_worker_running+0x9b/0x120 kernel/workqueue.c:1434
 schedule_timeout+0xca/0x180 kernel/time/sleep_timeout.c:99
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common+0xef/0x1d0 kernel/sched/completion.c:132
 usb_start_wait_urb+0x12c/0x220 drivers/usb/core/message.c:72
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x182/0x240 drivers/usb/core/message.c:167
 get_port_status drivers/usb/core/hub.c:607 [inline]
 hub_ext_port_status+0xc2/0x470 drivers/usb/core/hub.c:624
 usb_hub_port_status drivers/usb/core/hub.c:674 [inline]
 port_event drivers/usb/core/hub.c:5761 [inline]
 hub_event+0x47e/0x2aa0 drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0x4d4/0x9a0 kernel/workqueue.c:3397
 worker_thread+0x569/0x750 kernel/workqueue.c:3478
 kthread+0x221/0x270 kernel/kthread.c:436
 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffff888237c2a8e4 of 4 bytes by interrupt on cpu 1:
 need_more_worker kernel/workqueue.c:952 [inline]
 kick_pool+0x49/0x2d0 kernel/workqueue.c:1274
 __queue_work+0x8c8/0xb10 kernel/workqueue.c:2394
 queue_work_on+0xa9/0x140 kernel/workqueue.c:2444
 wg_queue_enqueue_per_device_and_peer drivers/net/wireguard/queueing.h:171 [inline]
 wg_packet_consume_data drivers/net/wireguard/receive.c:526 [inline]
 wg_packet_receive+0xda9/0x11b0 drivers/net/wireguard/receive.c:576
 wg_receive+0x4e/0x80 drivers/net/wireguard/socket.c:325
 udpv6_queue_rcv_one_skb+0x867/0x8b0 net/ipv6/udp.c:842
 udpv6_queue_rcv_skb+0x301/0x3e0 net/ipv6/udp.c:883
 udp6_unicast_rcv_skb+0x19d/0x1c0 net/ipv6/udp.c:1027
 udpv6_rcv+0xc36/0xd40 net/ipv6/udp.c:1143
 ip6_protocol_deliver_rcu+0xac3/0x1170 net/ipv6/ip6_input.c:479
 ip6_input_finish+0xf0/0x1c0 net/ipv6/ip6_input.c:534
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ip6_input+0x5e/0x160 net/ipv6/ip6_input.c:545
 dst_input include/net/dst.h:481 [inline]
 ip6_rcv_finish+0x1f5/0x330 net/ipv6/ip6_input.c:119
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ipv6_rcv+0x72/0x170 net/ipv6/ip6_input.c:351
 __netif_receive_skb_one_core net/core/dev.c:6202 [inline]
 __netif_receive_skb net/core/dev.c:6315 [inline]
 process_backlog+0x2a2/0x680 net/core/dev.c:6666
 __napi_poll+0x61/0x300 net/core/dev.c:7733
 napi_poll net/core/dev.c:7796 [inline]
 net_rx_action+0x456/0x930 net/core/dev.c:7953
 handle_softirqs+0xb9/0x280 kernel/softirq.c:622
 do_softirq+0x45/0x60 kernel/softirq.c:523
 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450
 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:283 [inline]
 _raw_read_unlock_bh+0x1b/0x30 kernel/locking/spinlock.c:288
 wg_socket_send_skb_to_peer+0x10c/0x130 drivers/net/wireguard/socket.c:183
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x12d/0x340 drivers/net/wireguard/send.c:276
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0x4d4/0x9a0 kernel/workqueue.c:3397
 worker_thread+0x569/0x750 kernel/workqueue.c:3478
 kthread+0x221/0x270 kernel/kthread.c:436
 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 11903 Comm: kworker/1:7 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
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