Priority inversion is a problematic scenario in real-time scheduling where a high-priority task is forced to wait for a lower-priority task to release a shared resource, such as a mutex or semaphore. This occurs when a medium-priority task preempts the low-priority task while it holds the resource, indirectly blocking the high-priority task. This inversion can cause the high-priority task to miss its deadline, leading to system failure in hard real-time contexts like robotic control or avionics.




