Re: [PATCH 6/6] exec: Set the point of no return sooner

[Kees Cook]

On Fri, May 08, 2020 at 01:48:13PM -0500, Eric W. Biederman wrote:
> 
> Make the code more robust by marking the point of no return sooner.
> This ensures that future code changes don't need to worry about how
> they return errors if they are past this point.
> 
> This results in no actual change in behavior as __do_execve_file does
> not force SIGSEGV when there is a pending fatal signal pending past
> the point of no return.  Further the only error returns from de_thread
> and exec_mmap that can occur result in fatal signals being pending.
> 
> Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>

Yes, thank you. I'm a fan; this makes the comment above the function a
bit easier to understand, since the very first thing is to set the
point_of_no_return. :)

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

-- 
Kees Cook