CEF Renderer crash on specific captcha (Linux)

[edgardog]

Accessing a specific ebay captcha: https://www.ebay.com/splashui/challenge ... w.ebay.com
It crashes the renderer process.

Found this has been around for about a year, other projects have this report : https://github.com/ungoogled-software/u ... ssues/3333

And the fix seems to be re-enable crashpad on linux ( https://github.com/ungoogled-software/u ... c78b575628 ).

I have not setup crashpad/breakpad reports on my cef-based app. So Im not too sure how to troubleshoot this.
I would appreciate any pointers,
its fairly reproducible, simply access the URL and it crashes right away. Happens on cefclient (both with alloy style and without it). I tried on 7632 so far which is my current dev branch.

[edgardog]

I tried running the rendered process using gdb on xterm, and it produces a few SIGSYS, and when I continue those it produces the final SIGSEGV I attach on the photo.
I used the CEF automated build for 146: https://cef-builds.spotifycdn.com/index.html#linux64
Does this one includes the debug symbols?
I notice windows builds have a special debug symbols binary distribution but linux builds do no have it. is it because it includes it already? (using Standard distribution and building cefclient as Debug)

[magreenblatt]

Yes, Linux binaries should include symbols

[edgardog]

Thanks for the reply.
I could not get much further with that debugging, since it does not show any info I can use...
I followed what someone suggest in that post from ungoogle-chromium of using --js-flags="--jitless" and this prevents the crash. It does not show the captcha, so something is wrong with that, but at least I can prevent the crash that way.
The interwebs (which seems to be a pointer to AI nowadays) says chrome allows to set that -jitless based on the site, so I could only do that for eBay.
Do you think this is something than can be done using the devprotocol interface?

[magreenblatt]

Does the crash reproduce with the "cefclient" sample app? You can try setting up local crash reporting as documented here.

[edgardog]

yes, cefclient --use-alloy-style , then access: https://www.ebay.com/splashui/challenge ... w.ebay.com and it crashes (SIGSEGV on renderer).
I will try the crash handler.. I did but maybe I did not setup the config file properly, will give it another try. Thanks

[magreenblatt]

Note the lack of symbolization is described also in the issue you linked.