Reporting a Crash Bug

If you are planning to report a crash bug, please make sure you include enough information for debugging purpose.

• Make sure you have the latest Chrome version (on Windows go to Chrome Options->About Google Chrome)
• Make sure you have crash reporting enabled.
• Try to get exact reproducible steps for the crash, if possible.
• Try to also provide more debugging info by either: .
  • Reporting the crash directly: If possible, and you are using Google Chrome, enable crash reporting in Google Chrome's settings: go to chrome://chrome/settings, click "Show advanced settings..." and in the Privacy section select select "Automatically send usage statistics and crash reports to Google", then see the instructions below for getting a crash ID. (Note that if this setting was not already enabled, you'll need to reproduce the crash first.)
  • Collecting crash data: Otherwise, see the instructions for collecting crash data.

Getting a Crash ID

If crash reporting is enabled, you should provide the crash ID in your bug report, or your client ID if the crash ID isn't available. Go to chrome://crashes and see if your crash is listed. If so, copy and paste the crash ID into your bug report.

Otherwise, copy and paste the line containing "client_id" in your Local State file from your profile into the bug report. The location of the profile depends on your platform:

• Windows:

  • Vista and higher: %LOCALAPPDATA%\Google\Chrome\User Data

  • `XP: %USERPROFILE%\Local Settings\Application

        Data\Google\Chrome\User Data` on Windows XP
    

• Linux: ~/.config/google-chrome

• Mac: ~/Library/Application Support/Google/Chrome

Collecting Crash Data

If crash reporting is not enabled, or no crash ID is available, you can collect raw crash data.

Windows

• Windows can be configured to log crash reports to %localappdata%\crashdumps, by using regedit to create the key (registry folder) "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps". For details see this Microsoft article. You can see the recorded crash dumps by pasting %localappdata%\crashdumps into Windows Explorer or the search area in the start menu. Look for a chrome.exe.123.dmp file from the time of your crash, and if there is one, attach it to your bug.
• You can capture a minidump file using windbg.exe:
  • If you do not already have windbg.exe, download it from Microsoft website
  • Run WinDbg with this command - windbg.exe -o <full path to chrome.exe>
  • Keep hitting F5 until you hit an exception (Access violation or some other error) or until Chrome window comes up
  • If Chrome Window opens successfully, try to reproduce the crash. When crash happens you should see an exception reported in WinDbg (Access violation or some other error)
  • After the exception has been reported save the dump file by typing this exact command in WinDbg command: .dump C:\chrome.dmp (do not forget '.' at the beginning)
  • Once the dump file has been successfully saved, compress this dump file, upload it somewhere and post the link to the file along with the bug description.

Linux

• If you are using Chromium follow these instructions on how to get additional details about the Chromium crash on Ubuntu.

Mac

• System crash reports are logged to ~/Library/Logs/CrashReporter, so check there for a crash file from the time of your crash, and if there is one, attach it to your bug.

Android

• System crash reports are logged to /data/data/$PACKAGE/cache/Crash\ Reports/, where $PACKAGE depends on which app (chrome, content test shell, etc..), as defined here.
• Sometimes the crash will also be printed to the "logcat" and/or as a tombstone file. More info here on how to obtain and symbolize it.
• Alternatively, use "adb shell bugreport" to collect system-wide information.