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>
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