from nouveau ddx, drmmode_display.c:

        if (scrn) {
                xf86CrtcConfigPtr conf = XF86_CRTC_CONFIG_PTR(scrn);
                drmmode_crtc_private_ptr crtc = conf->crtc[0]->driver_private;

                return crtc->drmmode;
        }

crtc is being set to 0x1b0, which is not a valid pointer.  Segfaults on
deref in the return.

** Package changed: xorg-server (Ubuntu) => xserver-xorg-video-nouveau
(Ubuntu)

** Changed in: xserver-xorg-video-nouveau (Ubuntu)
   Importance: Undecided => Medium

** Changed in: xserver-xorg-video-nouveau (Ubuntu)
       Status: New => Triaged

** Changed in: xserver-xorg-video-nouveau (Ubuntu)
     Assignee: (unassigned) => Maarten Lankhorst (mlankhorst)

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1124693

Title:
  Xorg crashed with SIGABRT in drmmode_from_scrn

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