Created attachment 1077987 [details] The log file I get when following the steps on https://fedoraproject.org/wiki/Debugging_guidelines_for_Mozilla_products#Running_application_in_debugger Description of problem: Firefox crashes on https://www.intelexit.org/, a web site with video elements. Version-Release number of selected component (if applicable): firefox-41.0-4.fc22.x86_64 How reproducible: Specific to this profile. I can't reproduce it with a fresh profile. Steps to Reproduce: 1. load https://www.intelexit.org/ Actual results: Firefox crashes while loading the page. The page does not have to be focused. Expected results: No crash Additional info: See attached gdb file.
Can you please try in safe mode (firefox -safe-mode) without extensions/plugins?
Anyway, I'm upnable to reproduce - I get a message about unsupported MIME type.
I have no plugins installed and activated, so it is not caused by a plugin. But in safe mode the crash doesn't happen in firefox.
Then the crash is caused by some of your extension which is enabled in normal mode. Try to disable some and report to the extension author...
My firefox profile seems to be pretty messed up. On about:addons I don't even see addons (another bug?), but I have some installed and running. I think I will have to create a new profile anyway.
This is a duplicate of bug #1264634 (also a crash in nsBaseAppShell::RunSyncSectionsInternal) and is tracked upstream at https://bugzilla.mozilla.org/show_bug.cgi?id=1191713 *** This bug has been marked as a duplicate of bug 1264634 ***