Bug 61947

Summary:	nullpointer dereference causes xorg-server segfault when nouveau DRI driver is loaded
Product:	Mesa	Reporter:	Jan de Groot <jan>
Component:	Drivers/DRI/nouveau	Assignee:	Nouveau Project <nouveau>
Status:	RESOLVED FIXED	QA Contact:
Severity:	critical
Priority:	medium
Version:	9.1
Hardware:	All
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	Patch that fixes the segfault

Description Jan de Groot 2013-03-07 08:51:39 UTC

Created attachment 76086 [details]
Patch that fixes the segfault

Chromium can crash Xorg when the nouveau DRI driver is loaded. This is due to a nullpointer dereference.

Archlinux bug (Xorg crash): https://bugs.archlinux.org/task/33994
Fedora bug (Application crash, same cause): https://bugzilla.redhat.com/show_bug.cgi?id=862466

As suggested in the Fedora bug, comment 15, attached is a patch that fixes this issue (confirmed on Archlinux). This is the same check the Intel DRI driver does, so I think it's needed there.

Comment 1 Marcin Slusarz 2013-03-07 19:00:48 UTC

Thanks. I pushed it to master and marked as stable candidate.

http://cgit.freedesktop.org/mesa/mesa/commit/?id=17f1cb1d99e66227d1e05925ef937643f5c1089a

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