MIT 6.1810 Lab: system calls (Fall 2026)

Trace a system call with gdb from the user stub through the trap into kernel dispatch, add a call that filters other system calls, and exploit a planted kernel bug to see why isolation depends on careful kernel code.

The exercise happens on MIT 6.1810. Canonical link: https://pdos.csail.mit.edu/6.1810/2026/labs/syscall.html. Link check: link responded (5 Oct 2026). Opened from this app 0 times; opening is not counted as an attempt.

Supports: Privilege transitions, argument passing and the kernel as an isolation boundary.