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    SubjectRe: [PATCH][2.4] cleanup ptrace secfix and fix most side effects
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    On Iau, 2003-05-08 at 23:05, Bernhard Kaindl wrote:
    > - mb();
    > - if (!is_dumpable(child))
    > - return -EPERM;
    >
    > if (!(child->ptrace & PT_PTRACED))
    > return -ESRCH;
    >
    > Using is_dumpable() here is not neccesary because the checks done here are:
    >
    > > if (!(child->ptrace & PT_PTRACED))
    > > return -ESRCH;

    Except that current->mm->dumpable is not per task but per mm so you
    might ptrace one thread and have another go setuid.


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