================================================================== BUG: KCSAN: data-race in io_req_task_complete / kiocb_done write to 0xffff888132481b44 of 4 bytes by task 2063 on cpu 0: 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 0xffff888132481b44 of 4 bytes by task 2064 on cpu 1: kiocb_done+0x1b5/0x640 fs/io_uring.c:3227 io_read fs/io_uring.c:3934 [inline] io_issue_sqe+0x63e9/0x8690 fs/io_uring.c:7138 io_wq_submit_work+0x249/0x2d0 fs/io_uring.c:7313 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: 0x00ac4100 -> 0x00ad0100 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 2064 Comm: iou-wrk-2063 Tainted: G W 5.18.0-rc5-syzkaller-00014-gef8e4d3c2ab1-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================