syzbot

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BUG: KCSAN: data-race in __io_fill_cqe_req / io_wake_function

read-write to 0xffff888139241a50 of 4 bytes by task 28224 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_req_complete fs/io_uring.c:2617 [inline]
 io_fallocate fs/io_uring.c:5331 [inline]
 io_issue_sqe+0x8a79/0xaac0 fs/io_uring.c:8392
 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 0xffff888139241a50 of 4 bytes by task 28220 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_issue_sqe+0x8b35/0xaac0
 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

value changed: 0x00002399 -> 0x0000239a

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 28220 Comm: iou-wrk-28217 Not tainted 5.19.0-rc8-syzkaller-00105-g6e2c0490769e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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