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BUG: KCSAN: data-race in io_clean_op / kiocb_done

write to 0xffff8881374e0758 of 4 bytes by task 6418 on cpu 1:
 io_clean_op+0x3aa/0x3e0 fs/io_uring.c:6635
 io_req_complete_state fs/io_uring.c:1830 [inline]
 io_req_task_complete+0xb2/0x1e0 fs/io_uring.c:2670
 tctx_task_work+0x275/0x4d0 fs/io_uring.c:2159
 task_work_run+0xae/0x130 kernel/task_work.c:164
 tracehook_notify_signal include/linux/tracehook.h:214 [inline]
 io_run_task_work fs/io_uring.c:2419 [inline]
 io_run_task_work_sig fs/io_uring.c:7522 [inline]
 io_cqring_wait_schedule fs/io_uring.c:7539 [inline]
 io_cqring_wait+0x547/0x8c0 fs/io_uring.c:7608
 __do_sys_io_uring_enter fs/io_uring.c:10012 [inline]
 __se_sys_io_uring_enter+0x641/0xb30 fs/io_uring.c:9928
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:9928
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881374e0758 of 4 bytes by task 6419 on cpu 0:
 kiocb_done+0x1c5/0x710 fs/io_uring.c:2943
 io_read fs/io_uring.c:3568 [inline]
 io_issue_sqe+0x3df5/0x67b0 fs/io_uring.c:6654
 io_wq_submit_work+0xf5/0x2c0 fs/io_uring.c:6803
 io_worker_handle_work+0x788/0xa20 fs/io-wq.c:515
 io_wqe_worker+0x1b9/0x540 fs/io-wq.c:566
 ret_from_fork+0x1f/0x30

value changed: 0x000c0302 -> 0x00090102

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6419 Comm: iou-wrk-6418 Not tainted 5.15.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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