Patch "drm/nouveau: fix for disabled fbdev emulation" has been added to the 4.4-stable tree

Patch "drm/nouveau: fix for disabled fbdev emulation" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/nouveau: fix for disabled fbdev emulation

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-nouveau-fix-for-disabled-fbdev-emulation.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 52dfcc5ccfbb6697ac3cac7f7ff1e712760e1216 Mon Sep 17 00:00:00 2001
From: Dmitrii Tcvetkov <demfloro@demfloro.ru>
Date: Mon, 20 Jun 2016 13:52:14 +0300
Subject: drm/nouveau: fix for disabled fbdev emulation

From: Dmitrii Tcvetkov <demfloro@demfloro.ru>

commit 52dfcc5ccfbb6697ac3cac7f7ff1e712760e1216 upstream.

Hello,

after this commit:

commit f045f459d925138fe7d6193a8c86406bda7e49da
Author: Ben Skeggs <bskeggs@redhat.com>
Date:   Thu Jun 2 12:23:31 2016 +1000
    drm/nouveau/fbcon: fix out-of-bounds memory accesses

kernel started to oops when loading nouveau module when using GTX 780 Ti
video adapter. This patch fixes the problem.

Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=120591

Signed-off-by: Dmitrii Tcvetkov <demfloro@demfloro.ru>
Suggested-by: Ilia Mirkin <imirkin@alum.mit.edu>
Fixes: f045f459d925 ("nouveau_fbcon_init()")
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/nouveau/nouveau_fbcon.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -557,7 +557,8 @@ nouveau_fbcon_init(struct drm_device *de
 	if (ret)
 		goto fini;
 
-	fbcon->helper.fbdev->pixmap.buf_align = 4;
+	if (fbcon->helper.fbdev)
+		fbcon->helper.fbdev->pixmap.buf_align = 4;
 	return 0;
 
 fini:


Patches currently in stable-queue which might be from demfloro@demfloro.ru are

queue-4.4/drm-nouveau-fix-for-disabled-fbdev-emulation.patch