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

[Miroslav Lachman]

Steve Wills wrote on 10/08/2015 21:55:
> Just to test, try setting gfx.canvas.azure.backends and
> gfx.content.azure.backends to skia in about:config and see if it still
> crashes.

Hi Steve,

I changed both from cairo to skia. Firefox crashed again on www.mapy.cz 
but on next start www.mapy.cz and www.seznam.cz works normally. So this 
can be a workaround.

When I entered www.mapy.cz this messages were printed on console but FF 
didn't crash

 > firefox

(process:8936): 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.

Can I use "skia" or does it have some negative impact? (I don't know 
what these two settings mean)

Miroslav Lachman



> On 10/08/2015 11:53, Steve Wills wrote:
>> 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.