Re: [PATCH 2/6] ptrace: Remove the unnecessary arguments from arch_ptrace_stop

From: Kees Cook
Date: Fri Sep 24 2021 - 11:26:15 EST

On Thu, Sep 23, 2021 at 07:10:03PM -0500, Eric W. Biederman wrote:
> Both arch_ptrace_stop_needed and arch_ptrace_stop are called with an
> exit_code and a siginfo structure. Neither argument is used by any of
> the implementations so just remove the unneeded arguments.
> The two arechitectures that implement arch_ptrace_stop are ia64 and
> sparc. Both architectures flush their register stacks before a
> ptrace_stack so that all of the register information can be accessed
> by debuggers.
> As the question of if a register stack needs to be flushed is
> independent of why ptrace is stopping not needing arguments make sense.
> Cc: David Miller <davem@xxxxxxxxxxxxx>
> Cc: sparclinux@xxxxxxxxxxxxxxx
> Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>

Yeah, this is a no-op change. No one is using the arguments, as you say.

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>


Kees Cook