webkit browsers crash when accessing certain SSL sites

[Alexander Bochmann]

I have tried to load https://duckduckgo.com/ (the default search engine in Midori) with Midori, uzbl, and finally GtkLauncher from /usr/lib/webkitgtk-1.0-0/libexec/GtkLauncher, and all three crashed with similar symptoms.

(The same happens, incidentally, when trying to access https://bugs.launchpad.net/ with one of these browsers, while https://google.com/ seems to work.)

GtkLauncher terminates with the following message:

$ /usr/lib/webkitgtk-1.0-0/libexec/GtkLauncher
GtkLauncher: /build/buildd/cairo-1.10.2/src/cairo-surface.c:1287: cairo_surface_set_device_offset: Assertion `status == CAIRO_STATUS_SUCCESS' failed.
Aborted (core dumped)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: libwebkitgtk-1.0-0 1.4.3-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Tue Jan 17 00:27:13 2012
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1)
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
SourcePackage: webkit
UpgradeStatus: Upgraded to oneiric on 2012-01-13 (3 days ago)

[Alexander Bochmann (ab+launchpad)]

Attached the core file generated by GtkLauncher. Unfortunately, I can't make use of it myself for lack of memory on the affected machine.
Note that this problem didn't exist in Natty on the same hardware.

It's an old system using a Pentium II-class CPU (Celeron Mendocino):

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 6
model name : Celeron (Mendocino)
stepping : 10
cpu MHz : 298.629
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pse36 mmx fxsr up
bogomips : 597.25
clflush size : 32
cache_alignment : 32
address sizes : 36 bits physical, 32 bits virtual
power management:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Dave Gilbert (ubuntu-treblig)]

Hi Alexander,
  Thanks for reporting this bug. I can't quite replicate this on my Quantal 64 bit box; neither Midori or GtkLauncher will open those sites, but neither seg; midori seems to hang (there is a libsoup-CRITICAL assertion, and GtkLauncher just doesn't seem to do anything) - actually they seem to do that on non-https as well.

So can I ask you:
  1) Does this still happen on a more recent Ubuntu? for you, on your system.
  2) Instead of attaching the core, can you please use ubuntu-bug to do it, it should generate a backtrace and attach maps and all that stuff automagically. I think apport-cli -u 917427 should do it.