tree 59d5b9fac27883ec10a233dad05a0dd64857d053
parent 13c432b51449dcdcfa0350fb87250b1dbd1fbd12
author Eric W. Biederman <ebiederm@xmission.com> 1585604019 -0500
committer Eric W. Biederman <ebiederm@xmission.com> 1589216928 -0500

exec: Run sync_mm_rss before taking exec_update_mutex

Like exec_mm_release sync_mm_rss is about flushing out the state of
the old_mm, which does not need to happen under exec_update_mutex.

Make this explicit by moving sync_mm_rss outside of exec_update_mutex.

Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/875zd66za3.fsf_-_@x220.int.ebiederm.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>