Patch "drm/amdkfd: destroy dbgmgr in notifier release" has been added to the 4.4-stable tree

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

drm/amdkfd: destroy dbgmgr in notifier release

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-amdkfd-destroy-dbgmgr-in-notifier-release.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 <[email protected]> know about it.

From: Oded Gabbay <[email protected]>
Date: Thu, 26 May 2016 08:41:48 +0300
Subject: drm/amdkfd: destroy dbgmgr in notifier release

From: Oded Gabbay <[email protected]>

commit bc4755a4bd1845ef6e88ac8c62f12e05bb530256 upstream.

amdkfd need to destroy the debug manager in case amdkfd's notifier function is called before the unbind function, because in that case, the unbind function will exit without destroying debug manager.

---
 drivers/gpu/drm/amd/amdkfd/kfd_process.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

@@ -242,13 +242,19 @@ static void kfd_process_notifier_release
 	pqm_uninit(&p->pqm);
 
 	/* Iterate over all process device data structure and check
-	 * if we should reset all wavefronts */
-	list_for_each_entry(pdd, &p->per_device_data, per_device_list)
+	 * if we should delete debug managers and reset all wavefronts
+	 */
+	list_for_each_entry(pdd, &p->per_device_data, per_device_list) {
+		if ((pdd->dev->dbgmgr) &&
+				(pdd->dev->dbgmgr->pasid == p->pasid))
+			kfd_dbgmgr_destroy(pdd->dev->dbgmgr);
+
 		if (pdd->reset_wavefronts) {
 			pr_warn("amdkfd: Resetting all wave fronts\n");
 			dbgdev_wave_reset_wavefronts(pdd->dev, p);
 			pdd->reset_wavefronts = false;
 		}
+	}
 
 	mutex_unlock(&p->mutex);
 

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

queue-4.4/drm-amdkfd-unbind-only-existing-processes.patch queue-4.4/drm-amdkfd-destroy-dbgmgr-in-notifier-release.patch