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    SubjectRe: [PATCH v5 06/10] Uprobes: Support SDT markers having reference count (semaphore)
    > 
    > I'm not sure if I get your concerns but let me try to explain what happens
    > in such cases. please let me know if I misunderstood your point.
    >
    > 1. Install a probe using perf.
    > # ./perf probe sdt_tick:loop2
    >
    >
    >
    > Does this explain your concerns?
    >


    No, this was not my concern.
    My concern is with two users on the same USDT.
    1. First user enables the probe point but doesn't increment the ref_cnt.
    via uprobe_register

    2. Second user tries to enable the probe point and also increments the
    ref_cnt via uprobe_register_refctr.

    3. If the second user now removes the probe point via uprobe_unregister.

    4. What is the state of the ref_cnt?

    --
    Thanks and Regards
    Srikar

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