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BUG: KCSAN: data-race in futex_wait_queue_me / io_req_task_work_add

write to 0xffff8881279c606c of 4 bytes by task 10584 on cpu 1:
 freezer_do_not_count include/linux/freezer.h:109 [inline]
 freezable_schedule include/linux/freezer.h:171 [inline]
 futex_wait_queue_me+0x198/0x260 kernel/futex.c:2606
 futex_wait+0x143/0x430 kernel/futex.c:2708
 do_futex+0x9e8/0x1ee0 kernel/futex.c:3733
 __do_sys_futex kernel/futex.c:3796 [inline]
 __se_sys_futex+0x2a8/0x390 kernel/futex.c:3762
 __x64_sys_futex+0x74/0x80 kernel/futex.c:3762
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881279c606c of 4 bytes by task 22 on cpu 0:
 io_req_task_work_add+0x3f/0x310 fs/io_uring.c:1926
 io_req_task_queue_fail fs/io_uring.c:2046 [inline]
 io_wq_submit_work+0x1d8/0x270 fs/io_uring.c:6259
 io_run_cancel fs/io-wq.c:707 [inline]
 io_wqe_cancel_pending_work+0x2ad/0x350 fs/io-wq.c:826
 io_wq_cancel_cb+0x93/0x250 fs/io-wq.c:863
 io_uring_try_cancel_iowq fs/io_uring.c:8888 [inline]
 io_uring_try_cancel_requests+0x203/0x8e0 fs/io_uring.c:8908
 io_ring_exit_work+0x7c/0x10e0 fs/io_uring.c:8711
 process_one_work+0x3e9/0x8f0 kernel/workqueue.c:2275
 worker_thread+0x636/0xae0 kernel/workqueue.c:2421
 kthread+0x1d0/0x1f0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound io_ring_exit_work
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