Bug#989332: libwebkit2gtk-4.0-37: May 30 upgrade for DSA-4923-1 broke the epiphany browser

[Alberto Garcia]

On Wed, Jun 02, 2021 at 06:11:56PM +0200, Jose wrote:
> Hi Berto,
> 
> Sorry for the delay. Yopmail went down a little bit after I sent my
> initial report.
> 
> Discord still crashes for me. I'm attaching the gdb trace you
> requested. I opened epiphany with a blank home screen, then went
> to the discord site and clicked on "open discord in the browser"
> 
> As you can see, I have the same version of epiphany that you used
> in your own test:
> 
>   Installed: 3.32.1.2-3~deb10u1
>   Candidate: 3.32.1.2-3~deb10u1
> 
> I may be able to reproduce the error due to my using discord and belonging
> to some servers. This may make epiphany/webkit or the associated 
> javascript do some rendering or something I don't know that used to work
> and stopped after the libwebkit patch. It's just normal discord servers,
> nothing hacked or fancy afaik.

Yes, I guess the reason is the servers you belong to because I really
cannot reproduce the problem.

If you run Epiphany from the command line, does it show any error
message when it crashes? There's an abort() there which might give us
a clue (the rest of the backtrace if unfortunately not very useful
without the symbols).

Also, can you try with the Minibrowser?

$ /usr/lib/*/webkit2gtk-4.0/MiniBrowser https://discord.com

One more thing, you can also try without the JIT:

$ JavaScriptCoreUseJIT=0 epiphany

If this last one doesn't crash, can you tell me what CPU model does
your computer have?

> If you'd like me to download the debug symbols and generate another
> bt, please tell me so.

Unfortunately they don't seem to be available yet for your build:

http://debug.mirrors.debian.org/debian-debug/pool/main/w/webkit2gtk/

You would need to build them yourself (or I can also provide the debug
packages for you if you prefer).

Berto