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General Agenda

Crashkill team works to track and escalate stability issues for both Desktop and Mobile products. Our activities include....

  • Track general stability for all our releases and development channels.
  • Triage Top Crashes to find owners, set priorities, and identify vender outreach issues.
  • Ensure that crash bugs are logged and updated with new information.
  • Identify top tools issues so we can find & fix faster.
  • Identify the first thing we want to do to increase developer awareness and commitment to fixing top crashers.
  • Identify the first thing we want to automate.
  • Working with the Socorro team to get features on the roadmap that help us find and diagnose crash bugs better.
  • Set topcrash threshold criteria.

Top Crashes

There are a number of bug queries that we triage regularly in order to stay on top of issues. Finding reproducible steps and helping us make them actionable will have a direct and in many cases significant impact on our users due to the volume involved. Not all bugs are fixes in our code. Many are 3rd party issues that can be resolved through outreach and/or blocklisting.

Firefox Desktop

Firefox Metro

Firefox Mobile


Firefox OS

Tracking a particular release

Reports & Tools

Mozilla collects crash data which can be easily viewed using Socorro (a web interface to the crash reports). We use Socorro and its numerous reports to monitor stability rates on a daily basis.

We also have a list of additional reports that we have developed to help us understand certain crashes and trends. We plan over time to integrate these into Socorro and most of these are on the roadmap already.


  • CrashKill/Plan
  • We are actively working with the Socorro team on a list of priorities for getting features into Socorro that will help crash analysis. We update the list quarterly.

Stability Related Projects

Crash Analysis

We have been doing some analysis on fixed crash bugs to better understand how they get fixed. Our results are compiled in this spreadsheet.

Specific Mac version crashes


Work Weeks

Weekly Crashkill Meetings

We meet each week to talk about stability issues across releases and channels.


  • Monday @ 10:00am PT
  • Mozilla Mountain View: Zombocom Conference Room, 3rd floor
  • Vidyo: Stability (Guest URL)
  • Meeting notes & queries:
  • join #crashkill for back channel

Meeting notes





Old Stuff