Segmentation faults are named to reflect the way in which memory is partitioned by purpose. This behavior can be modified by explicitly handling the signal in the program’s code. The kernel will normally terminate the process to avoid memory corruption. The meaning is quite simple: a process that receives a SIGSEGV signal tried to read or write memory it’s not allowed to access. What’s a segmentation fault?Ī segmentation fault can seem quite an opaque term. In this article, we’ll explain what SIGSEGV signals are, their impact on your Linux containers in Kubernetes, and the ways you can troubleshoot and handle segmentation faults in your application. If the error occurs in containers running a third-party image, there could be a bug inside that software or an incompatibility with your environment. It often points to a programming error in languages which gives you direct access to memory. It’s important to investigate what’s causing the segmentation errors if your containers are terminating with code 139. The operating system terminated the container’s process to guard against a memory integrity violation. When a container exits with status code 139, it’s because it received a SIGSEGV signal. SIGSEGV signals arise at the operating system level, but you’ll also encounter them in the context of containerization technologies like Docker and Kubernetes. This could be due to accidentally buggy code or intentional malicious activity. Segmentation errors occur when a program tries to access memory that hasn’t been allocated. The SIGSEGV Linux signal denotes a segmentation violation within a running process.
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