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In computing, a segmentation fault (often shortened to segfault) or access violation is a fault, or failure condition, raised by hardware with memory protection, notifying an operating system (OS) the software has attempted to access a restricted area of memory (a memory access violation).
BoundWarden is a new spatial memory enforcement approach that utilizes a combination of compile-time transformation and runtime concurrent monitoring techniques. [23] Fuzz testing is well-suited for finding memory safety bugs and is often used in combination with dynamic checkers such as AddressSanitizer.
SCP – Containment Breach is an indie horror game developed by Joonas "Regalis" Rikkonen. It is based on stories from the SCP Foundation collaborative writing project. In the game, the player controls a human test subject, D-9341, who is trapped in an underground facility designed to study and contain anomalous entities known as SCPs. [2]
The SCP Foundation [note 3] is a fictional organization featured in stories created by contributors on the SCP Wiki, a wiki-based collaborative writing project. Within the project's shared fictional universe, the SCP Foundation is a secret organization that is responsible for capturing, containing, and studying various paranormal, supernatural, and other mysterious phenomena (known as ...
An attempt to access unauthorized [a] memory results in a hardware fault, e.g., a segmentation fault, storage violation exception, generally causing abnormal termination of the offending process. Memory protection for computer security includes additional techniques such as address space layout randomization and executable-space protection.
Storage violation can, for instance, consist of reading from, writing to, or freeing storage not owned by the task. A common type of storage violation is known as a stack buffer overflow where a program attempts to exceed the limits set for its call stack. It can also refer to attempted modification of memory "owned" by another thread where ...
Twenty-two-year-old Tim Paterson was hired in June 1978 by SCP's owner Rodney Maurice Brock (26 August 1930 – 30 November 2018). [4] [5] At the time, SCP built memory boards for microcomputers, but after attending a local seminar on Intel's just-released 8086 in late summer 1978, Paterson convinced Brock that his company should design a CPU board for the new chip.
The tradeoff in these solutions is that OS-based schemes may have large latency which may nullify the gain achievable by cache pollution avoidance (unless the memory region has been non-cacheable to begin with), whereas hardware-based techniques may not have a global view of the program control flow and memory access pattern.