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BUG: KCSAN: data-race in __io_req_complete_post / io_wake_function

read-write to 0xffff88813c1c6210 of 4 bytes by task 18219 on cpu 0:
 io_get_cqe io_uring/io_uring.h:99 [inline]
 __io_fill_cqe_req io_uring/io_uring.h:119 [inline]
 __io_req_complete_post+0x9e/0xb50 io_uring/io_uring.c:806
 io_req_complete_post io_uring/io_uring.c:815 [inline]
 io_req_complete_failed+0xc5/0x180 io_uring/io_uring.c:828
 io_queue_async+0x110/0x490 io_uring/io_uring.c:1723
 io_queue_sqe io_uring/io_uring.c:1764 [inline]
 io_submit_sqe+0x705/0xa40 io_uring/io_uring.c:2013
 io_submit_sqes+0x274/0x530 io_uring/io_uring.c:2124
 __do_sys_io_uring_enter io_uring/io_uring.c:3057 [inline]
 __se_sys_io_uring_enter+0x254/0xa50 io_uring/io_uring.c:2987
 __x64_sys_io_uring_enter+0x74/0x80 io_uring/io_uring.c:2987
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88813c1c6210 of 4 bytes by task 18199 on cpu 1:
 io_should_wake io_uring/io_uring.c:2155 [inline]
 io_wake_function+0x36/0x100 io_uring/io_uring.c:2175
 __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 io_uring/io_uring.h:206 [inline]
 io_cqring_ev_posted io_uring/io_uring.c:540 [inline]
 __io_cq_unlock_post io_uring/io_uring.c:548 [inline]
 io_cq_unlock_post io_uring/io_uring.c:553 [inline]
 io_req_complete_post io_uring/io_uring.c:816 [inline]
 io_req_task_complete+0x1bc/0x200 io_uring/io_uring.c:1320
 handle_tw_list+0x12a/0x180 io_uring/io_uring.c:984
 tctx_task_work+0x72/0x360 io_uring/io_uring.c:1031
 task_work_run+0x8e/0x110 kernel/task_work.c:177
 io_run_task_work io_uring/io_uring.h:230 [inline]
 io_run_task_work_sig io_uring/io_uring.c:2183 [inline]
 io_cqring_wait_schedule io_uring/io_uring.c:2199 [inline]
 io_cqring_wait+0x5b4/0x920 io_uring/io_uring.c:2274
 __do_sys_io_uring_enter io_uring/io_uring.c:3092 [inline]
 __se_sys_io_uring_enter+0x4f2/0xa50 io_uring/io_uring.c:2987
 __x64_sys_io_uring_enter+0x74/0x80 io_uring/io_uring.c:2987
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00002f6d -> 0x00002f6e

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18199 Comm: syz-executor.2 Not tainted 6.0.0-rc7-syzkaller-00042-g46452d3786a8-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
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