Welcome to the LWN.net Weekly Edition for September 8, 2017

• Finding driver bugs with DR. CHECKER: A new static checker can find various types of security bugs in device-driver code.
• Spam filtering with Rspamd: The SpamAssassin project has slowed down in recent years; might Rspamd, a new contender, be a good replacement?
• Python security transparency: Instrumenting the Python interpreter to detect misuse on production systems.
• A last-minute MMU notifier change: A description of the API issues that nearly delayed the 4.13 kernel release.
• CPU frequency governors and remote callbacks: The 4.14 kernel will contain an important optimization that should help future devices be more responsive while saving power.
• The challenges of supporting geolocation in WordPress: WordPress does not make geolocation easy, but the WP-GeoMeta-Lib project can help.

This week's edition also includes these inner pages:

• Brief items: Brief news items from throughout the community.
• Announcements: Newsletters, conferences, security updates, patches, and more.

Please enjoy this week's edition, and, as always, thank you for supporting LWN.net.