On Wed, Apr 21, 2021 at 02:03:49PM -0500, Eric W. Biederman wrote: > David Hildenbrand <david@xxxxxxxxxx> writes: > > > Stumbling over the history of MAP_EXECUTABLE, I noticed that we still > > have some in-tree users that we can get rid of. > > > > A good fit for the whole series could be Andrew's tree. > > In general this looks like a good cleanup. > > Acked-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> Yeah, the PROT_EXEC parts are the only piece with meaning in the exec allocations. Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> > As far as I can see we can go after MAP_DENYWRITE the same way. > Today deny_write_access in open_exec is what causes -ETXTBSY > when attempting to write to file that is current executing. Oh, interesting point. I didn't realize MAP_DENYWRITE was separate from deny_write_access(). -Kees -- Kees Cook
