Bug#768360: iceweasel: crashes with Illegal instruction at startup

[Ondrej Zary]

Package: iceweasel
Version: 31.2.0esr-2~deb7u1
Severity: important

Dear Maintainer,
after upgrading iceweasel:i386 24.8.1esr-1~deb7u1 to 31.2.0esr-2~deb7u1, it
does not work anymore. It crashes immediately at startup with Illegal
instruction. In safe-mode, the application window appears but then it
immediately crashes too without a chance to do anything.

$ MOZILLA_DISABLE_PLUGINS=1 iceweasel --safe-mode
Xlib:  extension "RANDR" missing on display ":0".
Illegal instruction

CPU is 686 with CMOV (Cyrix MII)

$ cat /proc/cpuinfo
processor       : 0
vendor_id       : CyrixInstead
cpu family      : 6
model           : 2
model name      : M II 3x Core/Bus Clock
stepping        : 4
cpu MHz         : 225.016
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu de tsc msr cx8 pge cmov mmx cyrix_arr
bogomips        : 450.03
clflush size    : 32
cache_alignment : 32
address sizes   : 32 bits physical, 32 bits virtual
power management:

When the ~/.mozilla directory is deleted/renamed, iceweasel can be started
only in safe-mode. Normal mode crashes immediately with Illegal instruction.


-- Package-specific info:


-- Addons package information

-- System Information:
Debian Release: 7.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-4-486
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages iceweasel depends on:
ii  debianutils               4.3.2
ii  fontconfig                2.9.0-7.1
ii  libasound2                1.0.25-4
ii  libatk1.0-0               2.4.0-2
ii  libc6                     2.13-38+deb7u6
ii  libcairo2                 1.12.2-3
ii  libdbus-1-3               1.6.8-1+deb7u4
ii  libdbus-glib-1-2          0.100.2-1
ii  libevent-2.0-5            2.0.19-stable-3
ii  libffi5                   3.0.10-3
ii  libfontconfig1            2.9.0-7.1
ii  libfreetype6              2.4.9-1.1
ii  libgcc1                   1:4.7.2-5
ii  libgdk-pixbuf2.0-0        2.26.1-1
ii  libglib2.0-0              2.33.12+really2.32.4-5
ii  libgtk2.0-0               2.24.10-2
ii  libhunspell-1.3-0         1.3.2-4
ii  libpango1.0-0             1.30.0-1
ii  libsqlite3-0              3.7.13-1+deb7u1
ii  libstartup-notification0  0.12-1
ii  libstdc++6                4.7.2-5
ii  libx11-6                  2:1.5.0-1+deb7u1
ii  libxext6                  2:1.3.1-2+deb7u1
ii  libxrender1               1:0.9.7-1+deb7u1
ii  libxt6                    1:1.1.3-1+deb7u1
ii  procps                    1:3.3.3-3
ii  zlib1g                    1:1.2.7.dfsg-13

iceweasel recommends no packages.

Versions of packages iceweasel suggests:
pn  fonts-mathjax          <none>
pn  fonts-oflb-asana-math  <none>
pn  fonts-stix | otf-stix  <none>
pn  libcanberra0           <none>
pn  libgnomeui-0           <none>
ii  libgssapi-krb5-2       1.10.1+dfsg-5+deb7u2
pn  mozplugger             <none>

-- no debconf information