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