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[Bug 1656065] [NEW] plugin-container (Chrome_ChildThr): segfault at 0 ip b76df673 sp b1efe9f0 error 6.


Public bug reported:


Today, after a couple of hours of using Firefox (mostly YouTube and
other websites), web browser unexpectedly had been closed. Next, a
dialog box related to the Mozilla Crash Reporter appeared - which
contained a message, that reporter is disabled (which I did earlier via
'about:config' and *datareporting.healthreport.service.enabled* key set
to _false_) and no crash report is available even via 'about:crashes'
etc. By the way: today an update was available for flash-plugin [see:

Anyway, 'LastCrash' file (which can be found in ~/.mozilla/firefox/Crash
Reports/ directory) contains only: 1484142985. Just like all the others
files in this directory. There are also two folders called: 'events' and
'pending'. These directories are completely empty. However, system log
files, such as '/var/log/kern.log' or '/var/log/syslog', contains an
interesting entries:

---[ /var/log/kern.log:

Jan 11 14:56:25 t4 kernel: [ 4161.540727] Chrome_ChildThr[2890]:
segfault at 0 ip b76df673 sp b1efe9f0 error 6 in plugin-

There is also an AppArmor entry logged, but I don't know if it is
related with plugin-container segfault. As we know, thanks to the
plugin-container, plugins are separated from the browser process, making
it more stable so now if a plugin crashes, Firefox should remains
unharmed, right? It looks like, that this is a known problem [see: 2, 3,
4]. Anyway, here is some informations about versions:

● Firefox: 50.1.0
● Flash: 
● Release: 12.04.5 LTS (via `lsb_release -a` command)
● Linux: 3.2.0-120-generic-pae (3.2.79) i686 

Best regards. 
[1] https://lists.ubuntu.com/archives/precise-changes/2017-January/026047.html 
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1205199 
[3] https://bugzilla.mozilla.org/show_bug.cgi?id=1205199 
[4] https://bugzilla.redhat.com/show_bug.cgi?id=1253086

** Affects: adobe-flashplugin (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: flash plugin-container segfault

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  plugin-container (Chrome_ChildThr): segfault at 0 ip b76df673 sp
  b1efe9f0 error 6.

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