interrupt-handling – Tarik Billa

How to trap ERR when using ‘set -e’ in Bash

February 14, 2023 by Tarik

chepner’s answer is the best solution: If you want to combine set -e (same as: set -o errexit) with an ERR trap, also use set -o errtrace (same as: set -E). In short: use set -eE in lieu of just set -e: #!/bin/bash set -eE # same as: `set -o errexit -o errtrace` trap ‘echo … Read more

kernel stack and user space stack

December 10, 2022 by Tarik

What’s the difference between kernel stack and user stack ? In short, nothing – apart from using a different location in memory (and hence a different value for the stack pointer register), and usually different memory access protections. I.e. when executing in user mode, kernel memory (part of which is the kernel stack) will not … Read more