hi i have created a 3 task in which one is the restrictedtask and rest teo are noraml task ie using xtaskcreate and xtaskcreaterestricted but from the restricted task instead of running its going to prefetch entry ,whats the reason for it. thanks

I would need a lot more information on your set up to get close to an accurate answer for your particular use case, but in general terms, if you have created a restricted task then you limiting the memory the task can access and the instructions the task can executed. If that task hits an abort (prefetch in this case) then I assume it is accessing something or executing something it does not have the required privileges to do. Did you create the task privileged or unprivileged? Can you simply step through the code to see which instruction is triggering the abort?