1129236 - [e10s] Plugin hang locks up browser

Status: RESOLVED WORKSFORME

(Core :: DOM: Content Processes, defect)

Description

[Vladan Djeric (:vladan)]

Attachment: e10s_flash_hang.txt

I got a minute-long hang after loading a globalnews.ca page containing Flash objects. Eventually a notification bar gave me the option of killing the plugin, which allowed the session to resume.

I could not reproduce the bug on the same URL. See attached console log.

Comment 1

[Vladan Djeric (:vladan)]

On second look, the console log mostly contains DevTools issues -- I did try to open the Error Console after I noticed the hang.

Comment 2

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

Aside from the plugin hanging, it sounds like everything worked as expected here. To debug the plugin hang, it would be useful to have stacks from the content process and the plugin process.

Comment 3

[Vladan Djeric (:vladan)]

Is the Plugin Hang UI being ported to e10s?
http://dblohm7.ca/blog/2012/11/22/plugin-hang-user-interface-for-firefox/

Comment 4

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

No. The notification bar replaces the hang UI. Was there anything about the hang UI that was superior to the notification bar? If so, please mention it in bug 1119442.

Comment 5

[Vladan Djeric (:vladan)]

Yes, I think the hang UI did have some advantages, but I'll let the hang-UI author comment on bug 1119442

Comment 6

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

I'm going to close this for now since it's not reproducible. If you get the plugin hang again, please try to get stacks for the main, content, and plugin processes.