Patch "drm: Cancel drm_fb_helper_dirty_work on unload" has been added to the 4.9-stable tree

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

drm: Cancel drm_fb_helper_dirty_work on unload

to the 4.9-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-cancel-drm_fb_helper_dirty_work-on-unload.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Chris Wilson <[email protected]>
Date: Tue, 7 Feb 2017 12:49:55 +0000
Subject: drm: Cancel drm_fb_helper_dirty_work on unload
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From: Chris Wilson <[email protected]>

commit f21b9a92ca7c29382909eaab9facc2cf46f2cc0b upstream.

We can not allow the worker to run after its fbdev, or even the module, has been removed.

---
 drivers/gpu/drm/drm_fb_helper.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -848,6 +848,8 @@ void drm_fb_helper_fini(struct drm_fb_he
 	if (!drm_fbdev_emulation)
 		return;
 
+	cancel_work_sync(&fb_helper->dirty_work);
+
 	if (!list_empty(&fb_helper->kernel_fb_list)) {
 		list_del(&fb_helper->kernel_fb_list);
 		if (list_empty(&kernel_fb_helper_list)) {

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/drm-cancel-drm_fb_helper_dirty_work-on-unload.patch queue-4.9/drm-i915-gvt-disable-access-to-stolen-memory-as-a-guest.patch queue-4.9/drm-cancel-drm_fb_helper_resume_work-on-unload.patch