syzbot

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BUG: KCSAN: data-race in io_req_task_complete / kiocb_done

write to 0xffff88814029ff44 of 4 bytes by task 8096 on cpu 1:
 io_req_complete_state fs/io_uring.c:2111 [inline]
 io_req_task_complete+0x9a/0x470 fs/io_uring.c:2985
 handle_tw_list fs/io_uring.c:2463 [inline]
 tctx_task_work+0x80b/0xa30 fs/io_uring.c:2497
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 get_signal+0xeca/0x1020 kernel/signal.c:2641
 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166
 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88814029ff44 of 4 bytes by task 8123 on cpu 0:
 kiocb_done+0x1b5/0x640 fs/io_uring.c:3227
 io_read fs/io_uring.c:3934 [inline]
 io_issue_sqe+0x657d/0x8790 fs/io_uring.c:7146
 io_wq_submit_work+0x249/0x2d0 fs/io_uring.c:7321
 io_worker_handle_work+0x517/0xc50 fs/io-wq.c:597
 io_wqe_worker+0x1d1/0x940 fs/io-wq.c:644
 ret_from_fork+0x1f/0x30

value changed: 0x040c4100 -> 0x040d0100

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8123 Comm: iou-wrk-8096 Not tainted 5.18.0-rc7-syzkaller-00119-gb015dcd62b86-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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