728933 - OS X java placeholder plugin leaks when in-process

Status: RESOLVED WONTFIX

(Core Graveyard :: Plug-ins, defect, P5)

Description

[Jesse Ruderman]

Attachment: testcase

1. Run a debug build of Firefox with XPCOM_MEM_LEAK_LOG=2.
2. Load the testcase.
     Java Applet Plug-in 14.1.0 displays a placeholder: "Inactive Plug-in →"
3. Quit Firefox.

Result: a bunch of stuff leaks, but no documents or docshells or domwindows.

Comment 1

[Jesse Ruderman]

Attachment: leak stats

Comment 2

[Kyle Huey (Exited; not receiving bugmail, old account, do not use)]

Regressions from the recent plugin work?

Comment 3

[Nicholas Nethercote [inactive]]

johns, this sounds like stuff you're working on.

Comment 4

[John Schoenick [:johns]]

Does this still reproduce with the OS X placeholder plugin now that Java is OOP again? It doesn't with any other java incarnations, it would seem.

Comment 5

[Georg Fritzsche [:gfritzsche]]

I'd check, but i'm not sure how to go back to the placeholder plugin from a Java 7 install.

Comment 6

[Georg Fritzsche [:gfritzsche]]

I actually have the place holder plugin now since my Mac got fixed and setup freshly.
Checked and i don't see this with a current debug build, so this is limited to in-process for the placeholder as well.

Comment 7

[John Schoenick [:johns]]

So this is limited to the non-default configuration of a stub plugin on OS X only. This might be worth looking into to ensure it's not a bug in our code, but isn't terribly important.

Comment 8

[Benjamin Smedberg]

If somebody wants to investigate, it would be nice to figure out why the normal NPRuntime teardown code is leaking a NPObject beyond its instance. But other than that, this is unimportant.

Comment 9

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

I'm marking this bug as WONTFIX per bug #1269807.

For more information see - https://blog.mozilla.org/futurereleases/2015/10/08/npapi-plugins-in-firefox/