Firefox + SeaMonkey (gecko browsers) instant crash on some web pages

[Steve Wills]

Hi,

On 10/08/2015 10:25, Miroslav Lachman wrote:
> Walter Schwarzenfeld wrote on 10/07/2015 00:35:
>> Firefox 41.0.1 is out, give it a try.
> 
> 
> 
> I tried it in VirtualBox - same crash as with older versions.
> 
> In real host I got this (started ff from command line)
> 
>> firefox
> 
> (process:77500): GLib-CRITICAL **: g_slice_set_config: assertion
> 'sys_page_size == 0' failed
> Assertion failed: (!scaled_font->cache_frozen), function
> _cairo_scaled_glyph_page_destroy, file cairo-scaled-font.c, line 459.
> Abort
> 
> 
> In VirtualBox on FreeBSD 10.2 with Firefox 41
> 
>> firefox
> 
> (process:5471): GLib-CRITICAL **: g_slice_set_config: assertion
> 'sys_page_size == 0' failed
> Fontconfig warning: "local.conf", line 1093: saw number, expected matrix
> libGL error: Calling driver entry point failed
> libGL error: reverting to software direct rendering
> libGL error: failed to load driver: vboxvideo
> ATTENTION: default value of option force_s3tc_enable overridden by
> environment.
> Assertion failed: (!scaled_font->cache_frozen), function
> _cairo_scaled_glyph_page_destroy, file cairo-scaled-font.c, line 459.
> Redirecting call to abort() to mozalloc_abort
> 
> Segmentation fault
> 
> 
> First line with GLib-CRITICAL is shown on Firefox startup and is not
> related to crash on www.mapy.cz
> 
> The "cairo scaled" error is something I saw in the past with some other
> software, like GIMP or Avidemux. GIMP and Avidemux are not able to even
> start on my computer if I have Helvetica as system default font.
> Firefox and Seamonkey works fine until I need to open www.seznam.cz,
> www.mapy.cz and other websites from this company.
> 
> I tried it on host with differen font (Arial) and Firefox crashed again.
> 
>> firefox
> 
> (process:79336): GLib-CRITICAL **: g_slice_set_config: assertion
> 'sys_page_size == 0' failed
> Assertion failed: (!scaled_font->cache_frozen), function
> _cairo_scaled_glyph_page_destroy, file cairo-scaled-font.c, line 459.
> Redirecting call to abort() to mozalloc_abort
> 
> 
> ###!!! [Parent][MessageChannel] Error: Channel error: cannot send/recv
> 
> Assertion failed: (!scaled_font->cache_frozen), function
> _cairo_scaled_glyph_page_destroy, file cairo-scaled-font.c, line 459.
> Abort
> 
> So the crash is not related to choosen default font.
> 

I was able to trigger the issue on www.seznam.cz only. I'll look into as
much as I can.

Steve