ssdd - Man Page

have a tracer do a bunch of PTRACE_SINGLESTEPs


ssdd [-f|--forks NUM] [-h|--help] [-i|--iters NUM] [--json FILENAME]


Have a tracer do a bunch of PTRACE_SINGLESTEPs against a tracee as fast as possible. Create several of these tracer/tracee pairs and see if they can be made to interfere with each other. The tracer waits on each PTRACE_SINGLESTEP with a waitpid(2) and checks that waitpid's return values for correctness.


-f,  --forks=NUM

number of tracer/tracee pairs to fork off.
Default is 10.

-h,  --help

Display usage

-i,  --iters=NUM

number of PTRACE_SINGLESTEP iterations to do before declaring success, for each tracer tracee pair set up.
Default is 10,000.


Write final results into FILENAME, JSON formatted.


ssdd was written by Joe Korty <>

This manual page was written by John Kacur <>


September 19, 2020