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BUG: KCSAN: data-race in io_wqe_enqueue / io_wqe_worker

write to 0xffff888137d01844 of 4 bytes by task 8629 on cpu 0:
 io_wqe_worker+0x79/0x4f0 fs/io-wq.c:625
 ret_from_fork+0x1f/0x30

read to 0xffff888137d01844 of 4 bytes by task 8609 on cpu 1:
 io_wqe_get_acct fs/io-wq.c:172 [inline]
 io_wqe_activate_free_worker fs/io-wq.c:266 [inline]
 io_wqe_enqueue+0x381/0x740 fs/io-wq.c:935
 io_wq_enqueue+0x31/0x40 fs/io-wq.c:968
 io_queue_async_work+0x202/0x430 fs/io_uring.c:1615
 io_queue_sqe_arm_apoll fs/io_uring.c:7083 [inline]
 __io_queue_sqe+0x44c/0x6a0 fs/io_uring.c:7112
 io_req_task_submit+0x8b/0xf0 fs/io_uring.c:2441
 handle_tw_list fs/io_uring.c:2328 [inline]
 tctx_task_work+0x8b2/0xc90 fs/io_uring.c:2362
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 tracehook_notify_signal include/linux/tracehook.h:213 [inline]
 io_run_task_work fs/io_uring.c:2595 [inline]
 io_run_task_work_sig fs/io_uring.c:7684 [inline]
 io_cqring_wait_schedule fs/io_uring.c:7701 [inline]
 io_cqring_wait+0x597/0x950 fs/io_uring.c:7770
 __do_sys_io_uring_enter fs/io_uring.c:10178 [inline]
 __se_sys_io_uring_enter+0x649/0xb00 fs/io_uring.c:10094
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10094
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000004 -> 0x00000007

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 8609 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-00002-gd567f5db412e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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