================================================================== BUG: KCSAN: data-race in __io_fill_cqe_req / io_wake_function read-write to 0xffff88811478da50 of 4 bytes by task 5863 on cpu 1: io_get_cqe fs/io_uring.c:2241 [inline] __io_fill_cqe_req+0x242/0x5a0 fs/io_uring.c:2476 __io_req_complete_post fs/io_uring.c:2580 [inline] io_req_complete_post fs/io_uring.c:2590 [inline] __io_req_complete fs/io_uring.c:2610 [inline] io_send fs/io_uring.c:6222 [inline] io_issue_sqe+0x7ef7/0xaac0 fs/io_uring.c:8368 io_wq_submit_work+0x41b/0x590 fs/io_uring.c:8534 io_worker_handle_work+0x517/0xc50 fs/io-wq.c:597 io_wqe_worker+0x1d1/0x940 fs/io-wq.c:644 ret_from_fork+0x1f/0x30 read to 0xffff88811478da50 of 4 bytes by task 5828 on cpu 0: io_should_wake fs/io_uring.c:9302 [inline] io_wake_function+0x36/0x100 fs/io_uring.c:9322 __wake_up_common+0xbc/0x130 kernel/sched/wait.c:107 __wake_up_common_lock kernel/sched/wait.c:137 [inline] __wake_up+0x80/0xc0 kernel/sched/wait.c:156 io_cqring_wake fs/io_uring.c:2284 [inline] io_cqring_ev_posted fs/io_uring.c:2300 [inline] io_req_complete_post fs/io_uring.c:2593 [inline] io_req_complete_failed+0x37f/0x3b0 fs/io_uring.c:2623 io_queue_async+0xfe/0x160 fs/io_uring.c:8698 io_queue_sqe fs/io_uring.c:8742 [inline] io_submit_sqe+0x3a17/0x3f50 fs/io_uring.c:8993 io_submit_sqes+0x27b/0x500 fs/io_uring.c:9104 __io_sq_thread fs/io_uring.c:9156 [inline] io_sq_thread+0x5e7/0xac0 fs/io_uring.c:9225 ret_from_fork+0x1f/0x30 value changed: 0x000001f1 -> 0x000001f2 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5828 Comm: iou-sqp-5827 Not tainted 5.19.0-rc8-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================