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BUG: KCSAN: data-race in __io_async_wake / futex_wait_queue_me

write to 0xffff8880945e7064 of 4 bytes by task 17466 on cpu 1:
 freezer_count include/linux/freezer.h:121 [inline]
 freezable_schedule include/linux/freezer.h:173 [inline]
 futex_wait_queue_me+0x1a8/0x250 kernel/futex.c:2588
 futex_wait+0x145/0x390 kernel/futex.c:2690
 do_futex+0x145c/0x21c0 kernel/futex.c:3749
 __do_sys_futex kernel/futex.c:3810 [inline]
 __se_sys_futex+0x26d/0x330 kernel/futex.c:3778
 __x64_sys_futex+0x74/0x80 kernel/futex.c:3778
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff8880945e7064 of 4 bytes by task 17459 on cpu 0:
 io_req_task_work_add fs/io_uring.c:1756 [inline]
 __io_async_wake+0x19d/0x3a0 fs/io_uring.c:4630
 io_async_wake+0x7a/0x180 fs/io_uring.c:4860
 __wake_up_common+0xbc/0x130 kernel/sched/wait.c:93
 __wake_up_common_lock kernel/sched/wait.c:123 [inline]
 __wake_up+0x80/0xc0 kernel/sched/wait.c:142
 sock_def_wakeup+0x59/0x70 net/core/sock.c:2885
 unix_release_sock+0x2d7/0x650 net/unix/af_unix.c:552
 unix_release+0x2f/0x50 net/unix/af_unix.c:861
 __sock_release net/socket.c:596 [inline]
 sock_close+0x6c/0x150 net/socket.c:1277
 __fput+0x246/0x4d0 fs/file_table.c:281
 ____fput+0x11/0x20 fs/file_table.c:314
 task_work_run+0x8e/0x110 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:165 [inline]
 exit_to_user_mode_prepare+0x1b2/0x210 kernel/entry/common.c:192
 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:267
 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 17459 Comm: syz-executor.0 Not tainted 5.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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