Bug 61947 - nullpointer dereference causes xorg-server segfault when nouveau DRI driver is loaded
Summary: nullpointer dereference causes xorg-server segfault when nouveau DRI driver i...
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/nouveau (show other bugs)
Version: 9.1
Hardware: All Linux (All)
: medium critical
Assignee: Nouveau Project
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Reported: 2013-03-07 08:51 UTC by Jan de Groot
Modified: 2013-03-07 19:00 UTC (History)
0 users

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i915 platform:
i915 features:

Attachments
Patch that fixes the segfault (522 bytes, text/plain)
2013-03-07 08:51 UTC, Jan de Groot 		Details
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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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