Bug#854402: firefox: crashes when started via ssh

[Jörg-Volker Peetz]

Package: firefox
Version: 51.0.1-1
Severity: important

Dear Maintainer,

since version 51.0 firefox crashes here when started in X via ssh to a
different account on the same machine:

User A starts X session and from a terminal does

$ ssh -X B at localhost
$ firefox --new-session &

Then after a few commands in firefox like opening a new window (Ctrl-n)
going a web site with pictures (e.g., heise.de or amazon.de) which are
not displayed and closing the window again (Ctrl-w), firefox crashes
with a message like this:

(firefox:8153): Gdk-ERROR **: The program 'firefox' received an X Window System
error.
This probably reflects a bug in the program.
The error was 'RenderBadPicture (invalid Picture parameter)'.
  (Details: serial 2907 error_code 143 request_code 139 (RENDER) minor_code 7)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
Trace/breakpoint trap

The serial number (2907) varies.

No crash report ("about:crash") is available.

Any idea?

Regards,
Jörg-Volker.


-- Package-specific info:
<#part type="text/plain" disposition=attachment description="Bug script output">

-- Extensions information
Name: Application Update Service Helper
Location: ${PROFILE_EXTENSIONS}/aushelper at mozilla.org.xpi
Status: enabled

Name: Default theme
Location:
/usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi
Package: firefox
Status: enabled

Name: Deutsch (DE) Language Pack locale
Location: /usr/lib/firefox/browser/extensions/langpack-de at firefox.mozilla.org.xpi
Package: firefox-l10n-de
Status: enabled

Name: Hide Tabbar
Location: ${PROFILE_EXTENSIONS}/{7EE8902C-75BE-4286-A6CE-0C483607A322}.xpi
Status: enabled

Name: Multi-process staged rollout
Location: ${PROFILE_EXTENSIONS}/e10srollout at mozilla.org.xpi
Status: enabled

Name: Pocket
Location: ${PROFILE_EXTENSIONS}/firefox at getpocket.com.xpi
Status: enabled

Name: Web Compat
Location: ${PROFILE_EXTENSIONS}/webcompat at mozilla.org.xpi
Status: enabled

-- Plugins information

-- Addons package information
ii  firefox        51.0.1-1     amd64        Mozilla Firefox web browser
ii  firefox-l10n-d 51.0.1-1     all          German language package for Firef
<#/part>


-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (600, 'testing'), (500, 'unstable'), (5, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.7 (SMP w/2 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages firefox depends on:
ii  debianutils               4.8.1
ii  fontconfig                2.11.0-6.7
ii  libasound2                1.1.3-4
ii  libatk1.0-0               2.22.0-1
ii  libc6                     2.24-9
ii  libcairo-gobject2         1.14.8-1
ii  libcairo2                 1.14.8-1
ii  libdbus-1-3               1.10.14-1
ii  libdbus-glib-1-2          0.108-2
ii  libevent-2.0-5            2.0.21-stable-2.1
ii  libffi6                   3.2.1-6
ii  libfontconfig1            2.11.0-6.7
ii  libfreetype6              2.6.3-3+b1
ii  libgcc1                   1:6.3.0-5
ii  libgdk-pixbuf2.0-0        2.36.4-1
ii  libglib2.0-0              2.50.2-2
ii  libgtk-3-0                3.22.7-2
ii  libgtk2.0-0               2.24.31-2
ii  libhunspell-1.4-0         1.4.1-2+b1
ii  libpango-1.0-0            1.40.3-3
ii  libsqlite3-0              3.16.2-2
ii  libstartup-notification0  0.12-4
ii  libstdc++6                6.3.0-5
ii  libvpx4                   1.6.1-2
ii  libx11-6                  2:1.6.4-3
ii  libx11-xcb1               2:1.6.4-3
ii  libxcb-shm0               1.12-1
ii  libxcb1                   1.12-1
ii  libxcomposite1            1:0.4.4-2
ii  libxdamage1               1:1.1.4-2+b1
ii  libxext6                  2:1.3.3-1
ii  libxfixes3                1:5.0.3-1
ii  libxrender1               1:0.9.10-1
ii  libxt6                    1:1.1.5-1
ii  procps                    2:3.3.12-3
ii  zlib1g                    1:1.2.8.dfsg-5

firefox recommends no packages.

Versions of packages firefox suggests:
ii  fonts-lmodern          2.004.5-3
ii  fonts-stix [otf-stix]  1.1.1-4
pn  libcanberra0           <none>
ii  libgssapi-krb5-2       1.15-1
pn  mozplugger             <none>

-- no debconf information