Hmm. I have no idea about the context here, but is this related to this sandbox program? https://github.com/stedolan/Sandbox/blob/master/sandbox.c [...] // ***IMPORTANT*** // // Programs being graded must be compiled as a single, // statically-linked binary, e.g. gcc prog.c -o prog -static. If they // are not, the Linux dynamic linker runs every time the program is // started. The dynamic linker needs to read libraries from various // points on the hard disk, and this grading program will kill it as // soon as it attempts to (this grader prevents all hard disk / // filesystem access) // // If a program exits as soon as its started and the grader complains // about disallowed syscall "access" or "open", you've probably // forgotten to statically compile the program. // [...]