Bug#698637: iceweasel: Browsing the LibreOffice blog with Iceweasel makes the entire system freeze

[Simo Kaupinmäki]

Package: iceweasel
Version: 38.5.0esr-1~deb8u2
Followup-For: Bug #698637

I seem to have bumped into the same issue, running Iceweasel 38.5.0 on Debian
stable (Jessie) with Xfce on i386. Specifically, the freeze regularly happens
when browsing the LibreOffice official blog
(http://blog.documentfoundation.org/). So far I have not found this issue on
other web-sites.

Usually this bug does not emerge immediately when opening the web-site and you
may be able to read a post, but you won't probably get far. The bug typically
bites when navigating to a new page within the blog, which causes a jump in the
CPU usage, but it can also happen when just scrolling the front page. When the
bug bites, the system becomes completely unresponsive: the CPU usage monitor on
the Xfce panel freezes, the mouse and keyboard stop responding, and even "Alt-
SysRq-k" or "Alt-SysRq-b" key combinations have no effect. To get the system
back up and running, the computer needs to be manually reset or powered off and
on again.

The issue does not emerge when using  the Chromium browser. I suppose the
fundamental problem may lie on a deeper level in the system, but it is
triggered when a specific web-site is being browsed with Iceweasel. Disabling
the few Iceweasel/Firefox extensions I have installed does not help.



-- Package-specific info:

-- Extensions information
Name: Finnish Language Pack locale
Location: /usr/lib/iceweasel/browser/extensions/langpack-fi at iceweasel.mozilla.org.xpi
Package: iceweasel-l10n-fi
Status: enabled

Name: FireGestures
Location: /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/firegestures at xuldev.org
Package: xul-ext-firegestures
Status: user-disabled

Name: Mozilla-laajennus Voikon käyttöön
Location: /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/{b676e3ff-cda7-4e0c-b2b8-74e4bb40a67a}
Package: xul-ext-mozvoikko
Status: user-disabled

Name: NoScript
Location: /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/{73a6fe31-595d-460b-a920-fcc0f8843232}
Package: xul-ext-noscript
Status: user-disabled

Name: Oletus theme
Location: /usr/lib/iceweasel/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
Package: iceweasel
Status: enabled

Name: Self-Destructing Cookies
Location: ${PROFILE_EXTENSIONS}/jid0-9XfBwUWnvPx4wWsfBWMCm4Jj69E at jetpack.xpi
Status: user-disabled

-- Plugins information

-- Addons package information
ii  iceweasel      38.5.0esr-1~ i386         Web browser based on Firefox
ii  iceweasel-l10n 1:38.5.0esr- all          Finnish language package for Icew
ii  xul-ext-firege 1.8.7-1      all          execution of various commands wit
ii  xul-ext-mozvoi 2.0.1-1      all          Finnish spell-checker extension f
ii  xul-ext-noscri 2.6.9.3-1    all          permissions manager for Iceweasel

-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=fi_FI.utf8, LC_CTYPE=fi_FI.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages iceweasel depends on:
ii  debianutils               4.4+b1
ii  fontconfig                2.11.0-6.3
ii  libasound2                1.0.28-1
ii  libatk1.0-0               2.14.0-1
ii  libc6                     2.19-18+deb8u1
ii  libcairo2                 1.14.0-2.1
ii  libdbus-1-3               1.8.20-0+deb8u1
ii  libdbus-glib-1-2          0.102-1
ii  libevent-2.0-5            2.0.21-stable-2
ii  libffi6                   3.1-2+b2
ii  libfontconfig1            2.11.0-6.3
ii  libfreetype6              2.5.2-3+deb8u1
ii  libgcc1                   1:4.9.2-10
ii  libgdk-pixbuf2.0-0        2.31.1-2+deb8u4
ii  libglib2.0-0              2.42.1-1
ii  libgtk2.0-0               2.24.25-3
ii  libhunspell-1.3-0         1.3.3-3
ii  libpango-1.0-0            1.36.8-3
ii  libsqlite3-0              3.8.7.1-1+deb8u1
ii  libstartup-notification0  0.12-4
ii  libstdc++6                4.9.2-10
ii  libx11-6                  2:1.6.2-3
ii  libxcomposite1            1:0.4.4-1
ii  libxdamage1               1:1.1.4-2+b1
ii  libxext6                  2:1.3.3-1
ii  libxfixes3                1:5.0.1-2+b2
ii  libxrender1               1:0.9.8-1+b1
ii  libxt6                    1:1.1.4-1+b1
ii  procps                    2:3.3.9-9
ii  zlib1g                    1:1.2.8.dfsg-2+b1

Versions of packages iceweasel recommends:
pn  gstreamer1.0-libav         <none>
ii  gstreamer1.0-plugins-good  1.4.4-2

Versions of packages iceweasel suggests:
pn  fonts-mathjax          <none>
pn  fonts-oflb-asana-math  <none>
ii  fonts-stix [otf-stix]  1.1.1-1
ii  libcanberra0           0.30-2.1
ii  libgnomeui-0           2.24.5-3
ii  libgssapi-krb5-2       1.12.1+dfsg-19+deb8u1
pn  mozplugger             <none>

-- no debconf information