Patch "drm/gma500: Use correct unref in the gem bo create function" has been added to the 4.4-stable tree

Patch "drm/gma500: Use correct unref in the gem bo create function" 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/gma500: Use correct unref in the gem bo create function

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-gma500-use-correct-unref-in-the-gem-bo-create-function.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 d3e376f52d095103ca51dbda4d6ff8aaf488f98f Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Mon, 23 Nov 2015 10:32:49 +0100
Subject: drm/gma500: Use correct unref in the gem bo create function

From: Daniel Vetter <daniel.vetter@ffwll.ch>

commit d3e376f52d095103ca51dbda4d6ff8aaf488f98f upstream.

This is called without dev->struct_mutex held, we need to use the
_unlocked variant.

Never caught in the wild since you'd need an evil userspace which
races a gem_close ioctl call with the in-progress open.

Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-17-git-send-email-daniel.vetter@ffwll.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/gma500/gem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/gma500/gem.c
+++ b/drivers/gpu/drm/gma500/gem.c
@@ -130,7 +130,7 @@ int psb_gem_create(struct drm_file *file
 		return ret;
 	}
 	/* We have the initial and handle reference but need only one now */
-	drm_gem_object_unreference(&r->gem);
+	drm_gem_object_unreference_unlocked(&r->gem);
 	*handlep = handle;
 	return 0;
 }


Patches currently in stable-queue which might be from daniel.vetter@ffwll.ch are

queue-4.4/drm-gma500-use-correct-unref-in-the-gem-bo-create-function.patch