154777 – [GTK] Crash in GLContext::createContextForWindow when running under X11

Bug 154777 - [GTK] Crash in GLContext::createContextForWindow when running under X11

Summary: [GTK] Crash in GLContext::createContextForWindow when running under X11

Status:	NEW

Alias:	None

Product:	WebKit
Classification:	Unclassified
Component:	WebKitGTK (show other bugs)
Version:	Other
Hardware:	PC Linux

Importance:	P2 Normal
Assignee:	Nobody

URL:
Keywords:

Depends on:
Blocks:

Reported:	2016-02-27 11:55 PST by Michael Catanzaro
Modified:	2016-03-15 08:49 PDT (History)
CC List:	2 users (show)

See Also:	https://bugzilla.redhat.com/show_bug.cgi?id=1311519 https://bugzilla.redhat.com/show_bug.cgi?id=1292823 155492

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Description Michael Catanzaro 2016-02-27 11:55:21 PST

I have a Fedora 23 bug report from a user whose web process crashes whenever entering accelerated compositing mode. Full backtrace, including X window system error, in the downstream bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1311519

The crash occurs when running under X11 when built with Wayland support... that is, the default case, which we test all the time. No clue why it's only crashing for this one user.

Possibly unrelated, but Carlos Garcia noticed that's it's odd we use a wl_egl_window* as a GLX window handle ID. Can we really store an integer in a pointer with just a single reinterpret cast like this?