Using GDB’s reverse execution requires you to already be pretty sure where the bug you are looking for is, and then recording a very short portion of the progra

Using GDB’s reverse execution requires you to already be pretty sure where the bug you are looking for is, and then recording a very short portion of the program, preferably just 10k instructions or so. Recording for a whole second could easily take 15 minutes. But it does work well, within those limitations.