1404068 - Segfault of plugin-container when open file dialog appears in Flash

Status: RESOLVED DUPLICATE of bug 1394015

(Core Graveyard :: Plug-ins, defect)

Description

[Martin]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0
Build ID: 20170824053622

Steps to reproduce:

Firefox: 55.0.2, 64bit (installed from Ubuntu repository)
OS: Ubuntu 16.04, 64bit, all latest updates installed
Flash plugin: adobe-flashplugin, 1:20170912.1-0ubuntu0.16.04.1

Instead of file dialog in flash, segfault appears.

1) Go to https://scratch.mit.edu/
2) Menu Create (on page)
3) Menu File (in Scratch)
4) Menu item: "Download to your computer" (in Scratch)



Actual results:

Flash plugin crashes.

From log file: "plugin-containe[13011]: segfault at 0 ip 00007fd97c85da60 sp 00007ffca6804f28 error 6 in libmozgtk.so[7fd97c85c000+3000]"


Expected results:

After clicking on "Download to your computer" the file open/save dialog should open.

More findings:
* I have tried a newer version: Firefox 56, 64bit for Ubuntu with the same segfault.
* I have tried an older version: Firefox 54, 64bit for Ubuntu and the error WAS NOT there, flash file dialog opened normally.
* I can reproduce this bug on all computers in classroom, so memory problem is out of the game.
* I have tried a flashplugin-installer instead of adobe-flashplugin and still the error appears.