On 08/13/2018 06:47 PM, Oleg Nesterov wrote: > On 08/13, Ravi Bangoria wrote: >> >>> But damn, process creation (exec) is trivial. We could add a new uprobe_exec() >>> hook and avoid delayed_uprobe_install() in uprobe_mmap(). >> >> I'm sorry. I didn't get this. > > Sorry for confusion... > > I meant, if only exec*( could race with _register(), we could add another uprobe > hook which updates all (delayed) counters before return to user-mode. Ok. > >>> Afaics, the really problematic case is dlopen() which can race with _register() >>> too, right? >> >> dlopen() should internally use mmap() right? So what is the problem here? Can >> you please elaborate. > > What I tried to say is that we can't avoid uprobe_mmap()->delayed_uprobe_install() > because dlopen() can race with _register() too, just like exec. Right :) Thanks, Ravi
