On Mon, Sep 14, 2020 at 03:47:13PM +1000, Michael Ellerman wrote: > Kees Cook <keescook@xxxxxxxxxxxx> writes: > > Some archs (like ppc) only support changing the return code during > > syscall exit when ptrace is used. As the syscall number might not > > be available anymore during syscall exit, it needs to be saved > > during syscall enter. Adjust the ptrace tests to do this. > > I'm not that across all the fixture stuff, but if I'm reading it right > you're now calling change_syscall() on both entry and exit for all > arches. Correct. > That should work, but it no longer tests changing the return code on > entry on the arches that support it, which seems like a backward step? That's a good point. I wouldn't be in a position to notice a regression for the other architectures. I will refactor this one... -- Kees Cook
