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BUG: KCSAN: data-race in io_wqe_enqueue / io_wqe_worker

write to 0xffff888107357c04 of 4 bytes by task 6500 on cpu 1:
 io_wqe_worker+0x7c/0x540 fs/io-wq.c:632
 ret_from_fork+0x1f/0x30

read to 0xffff888107357c04 of 4 bytes by task 6496 on cpu 0:
 io_wqe_get_acct fs/io-wq.c:173 [inline]
 io_wqe_activate_free_worker fs/io-wq.c:272 [inline]
 io_wqe_enqueue+0x3f1/0x790 fs/io-wq.c:940
 io_wq_enqueue+0x31/0x40 fs/io-wq.c:973
 io_queue_async_work+0x228/0x470 fs/io_uring.c:1751
 io_queue_sqe_arm_apoll fs/io_uring.c:7589 [inline]
 __io_queue_sqe+0x317/0x460 fs/io_uring.c:7620
 io_req_task_submit+0x8b/0xb0 fs/io_uring.c:2622
 handle_tw_list fs/io_uring.c:2509 [inline]
 tctx_task_work+0x7d3/0xab0 fs/io_uring.c:2543
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 get_signal+0x1451/0x15a0 kernel/signal.c:2641
 arch_do_signal_or_restart+0x87/0x2e0 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0xc1/0x140 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:294
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000000c -> 0x0000000b

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6496 Comm: syz-executor.4 Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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