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When Invalid Memory Addresses Start Responding: The Hidden Chaos Beneath Modern Computing
Modern systems are designed around one basic promise: invalid memory addresses should never respond. When a program dereferences a pointer that belongs to no allocated region, the operating system is supposed to intervene immediately with a segmentation fault. End of story. Except… sometimes that promise breaks.And when it does, the consequences are far worse…
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Kernel Locking and Concurrency Pitfalls in Operating Systems
In modern operating systems, concurrency isn’t optional — it’s fundamental. Multiple threads and processes access shared resources constantly: memory, I/O, scheduling queues, filesystem metadata. Without strict synchronization, the kernel becomes a war zone of race conditions, data corruption, and unpredictable crashes. The kernel sits at the lowest level of control. If a locking mistake…