Short summary of fixes pull:

amdxdna:
 - remove mmap and export for ubuf
 
 bridge:
 - chipone-icn6211: managed bridge cleanup
 - lt66121: acquire reset GPIO
 - megachips: fix clean up on failed IRQ requests
 
 gem:
 - clean up LRU locking
 
 v3d:
 - fix UAF in error code paths
 - release GEM-object ref on free'd jobs
 
 virtio:
 - use uninterruptible resv locking in plane updates
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Merge tag 'drm-misc-fixes-2026-05-21' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

amdxdna:
- remove mmap and export for ubuf

bridge:
- chipone-icn6211: managed bridge cleanup
- lt66121: acquire reset GPIO
- megachips: fix clean up on failed IRQ requests

gem:
- clean up LRU locking

v3d:
- fix UAF in error code paths
- release GEM-object ref on free'd jobs

virtio:
- use uninterruptible resv locking in plane updates

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260521071456.GA14644@localhost.localdomain

drivers/accel/amdxdna/amdxdna_gem.c

@@ -490,6 +490,9 @@ static struct dma_buf *amdxdna_gem_prime_export(struct drm_gem_object *gobj, int
 	struct amdxdna_gem_obj *abo = to_xdna_obj(gobj);
 	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
 
+	if (abo->private_buffer)
+		return ERR_PTR(-EOPNOTSUPP);
+
 	if (abo->dma_buf) {
 		get_dma_buf(abo->dma_buf);
 		return abo->dma_buf;
@@ -685,6 +688,7 @@ amdxdna_gem_create_ubuf_object(struct drm_device *dev, struct amdxdna_drm_create
 {
 	struct amdxdna_dev *xdna = to_xdna_dev(dev);
 	struct amdxdna_drm_va_tbl va_tbl;
+	struct amdxdna_gem_obj *abo;
 	struct drm_gem_object *gobj;
 	struct dma_buf *dma_buf;
 
@@ -711,7 +715,10 @@ amdxdna_gem_create_ubuf_object(struct drm_device *dev, struct amdxdna_drm_create
 
 	dma_buf_put(dma_buf);
 
-	return to_xdna_obj(gobj);
+	abo = to_xdna_obj(gobj);
+	abo->private_buffer = true;
+
+	return abo;
 }
 
 struct drm_gem_object *

drivers/accel/amdxdna/amdxdna_gem.h

@@ -54,6 +54,8 @@ struct amdxdna_gem_obj {
 
 	/* True, if BO is managed by XRT, not application */
 	bool				internal;
+	/* True, if BO is not exportable */
+	bool				private_buffer;
 };
 
 #define to_gobj(obj)    (&(obj)->base.base)

drivers/accel/amdxdna/amdxdna_ubuf.c

@@ -69,60 +69,10 @@ static void amdxdna_ubuf_release(struct dma_buf *dbuf)
 	kfree(ubuf);
 }
 
-static vm_fault_t amdxdna_ubuf_vm_fault(struct vm_fault *vmf)
-{
-	struct vm_area_struct *vma = vmf->vma;
-	struct amdxdna_ubuf_priv *ubuf;
-	unsigned long pfn;
-	pgoff_t pgoff;
-
-	ubuf = vma->vm_private_data;
-	pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
-
-	pfn = page_to_pfn(ubuf->pages[pgoff]);
-	return vmf_insert_pfn(vma, vmf->address, pfn);
-}
-
-static const struct vm_operations_struct amdxdna_ubuf_vm_ops = {
-	.fault = amdxdna_ubuf_vm_fault,
-};
-
-static int amdxdna_ubuf_mmap(struct dma_buf *dbuf, struct vm_area_struct *vma)
-{
-	struct amdxdna_ubuf_priv *ubuf = dbuf->priv;
-
-	vma->vm_ops = &amdxdna_ubuf_vm_ops;
-	vma->vm_private_data = ubuf;
-	vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP);
-
-	return 0;
-}
-
-static int amdxdna_ubuf_vmap(struct dma_buf *dbuf, struct iosys_map *map)
-{
-	struct amdxdna_ubuf_priv *ubuf = dbuf->priv;
-	void *kva;
-
-	kva = vmap(ubuf->pages, ubuf->nr_pages, VM_MAP, PAGE_KERNEL);
-	if (!kva)
-		return -EINVAL;
-
-	iosys_map_set_vaddr(map, kva);
-	return 0;
-}
-
-static void amdxdna_ubuf_vunmap(struct dma_buf *dbuf, struct iosys_map *map)
-{
-	vunmap(map->vaddr);
-}
-
 static const struct dma_buf_ops amdxdna_ubuf_dmabuf_ops = {
 	.map_dma_buf = amdxdna_ubuf_map,
 	.unmap_dma_buf = amdxdna_ubuf_unmap,
 	.release = amdxdna_ubuf_release,
-	.mmap = amdxdna_ubuf_mmap,
-	.vmap = amdxdna_ubuf_vmap,
-	.vunmap = amdxdna_ubuf_vunmap,
 };
 
 struct dma_buf *amdxdna_get_ubuf(struct drm_device *dev,

drivers/gpu/drm/bridge/chipone-icn6211.c

@@ -758,7 +758,9 @@ static int chipone_i2c_probe(struct i2c_client *client)
 	dev_set_drvdata(dev, icn);
 	i2c_set_clientdata(client, icn);
 
-	drm_bridge_add(&icn->bridge);
+	ret = devm_drm_bridge_add(dev, &icn->bridge);
+	if (ret)
+		return ret;
 
 	return chipone_dsi_host_attach(icn);
 }

drivers/gpu/drm/bridge/ite-it66121.c

@@ -1559,6 +1559,11 @@ static int it66121_probe(struct i2c_client *client)
 		return ret;
 	}
 
+	ctx->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->gpio_reset))
+		return dev_err_probe(dev, PTR_ERR(ctx->gpio_reset),
+				     "Failed to get reset GPIO\n");
+
 	it66121_hw_reset(ctx);
 
 	ctx->regmap = devm_regmap_init_i2c(client, &it66121_regmap_config);

drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c

@@ -251,7 +251,6 @@ static void ge_b850v3_lvds_remove(void)
 		goto out;
 
 	drm_bridge_remove(&ge_b850v3_lvds_ptr->bridge);
-
 	ge_b850v3_lvds_ptr = NULL;
 out:
 	mutex_unlock(&ge_b850v3_lvds_dev_mutex);
@@ -261,6 +260,7 @@ static int ge_b850v3_register(void)
 {
 	struct i2c_client *stdp4028_i2c = ge_b850v3_lvds_ptr->stdp4028_i2c;
 	struct device *dev = &stdp4028_i2c->dev;
+	int ret;
 
 	/* drm bridge initialization */
 	ge_b850v3_lvds_ptr->bridge.ops = DRM_BRIDGE_OP_DETECT |
@@ -277,11 +277,15 @@ static int ge_b850v3_register(void)
 	if (!stdp4028_i2c->irq)
 		return 0;
 
-	return devm_request_threaded_irq(&stdp4028_i2c->dev,
+	ret = devm_request_threaded_irq(&stdp4028_i2c->dev,
 					stdp4028_i2c->irq, NULL,
 					ge_b850v3_lvds_irq_handler,
 					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 					"ge-b850v3-lvds-dp", ge_b850v3_lvds_ptr);
+	if (ret)
+		drm_bridge_remove(&ge_b850v3_lvds_ptr->bridge);
+
+	return ret;
 }
 
 static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c)

drivers/gpu/drm/drm_drv.c

@@ -697,6 +697,7 @@ static void drm_dev_init_release(struct drm_device *dev, void *res)
 	mutex_destroy(&dev->master_mutex);
 	mutex_destroy(&dev->clientlist_mutex);
 	mutex_destroy(&dev->filelist_mutex);
+	mutex_destroy(&dev->gem_lru_mutex);
 }
 
 static int drm_dev_init(struct drm_device *dev,
@@ -738,6 +739,7 @@ static int drm_dev_init(struct drm_device *dev,
 	INIT_LIST_HEAD(&dev->vblank_event_list);
 
 	spin_lock_init(&dev->event_lock);
+	mutex_init(&dev->gem_lru_mutex);
 	mutex_init(&dev->filelist_mutex);
 	mutex_init(&dev->clientlist_mutex);
 	mutex_init(&dev->master_mutex);

drivers/gpu/drm/drm_gem.c

@@ -1561,12 +1561,10 @@ EXPORT_SYMBOL(drm_gem_unlock_reservations);
  * drm_gem_lru_init - initialize a LRU
  *
  * @lru: The LRU to initialize
- * @lock: The lock protecting the LRU
  */
 void
-drm_gem_lru_init(struct drm_gem_lru *lru, struct mutex *lock)
+drm_gem_lru_init(struct drm_gem_lru *lru)
 {
-	lru->lock = lock;
 	lru->count = 0;
 	INIT_LIST_HEAD(&lru->list);
 }
@@ -1591,14 +1589,10 @@ drm_gem_lru_remove_locked(struct drm_gem_object *obj)
 void
 drm_gem_lru_remove(struct drm_gem_object *obj)
 {
-	struct drm_gem_lru *lru = obj->lru;
+	mutex_lock(&obj->dev->gem_lru_mutex);
-
+	if (obj->lru)
-	if (!lru)
-		return;
-
-	mutex_lock(lru->lock);
 		drm_gem_lru_remove_locked(obj);
-	mutex_unlock(lru->lock);
+	mutex_unlock(&obj->dev->gem_lru_mutex);
 }
 EXPORT_SYMBOL(drm_gem_lru_remove);
 
@@ -1613,7 +1607,7 @@ EXPORT_SYMBOL(drm_gem_lru_remove);
 void
 drm_gem_lru_move_tail_locked(struct drm_gem_lru *lru, struct drm_gem_object *obj)
 {
-	lockdep_assert_held_once(lru->lock);
+	lockdep_assert_held_once(&obj->dev->gem_lru_mutex);
 
 	if (obj->lru)
 		drm_gem_lru_remove_locked(obj);
@@ -1637,9 +1631,9 @@ EXPORT_SYMBOL(drm_gem_lru_move_tail_locked);
 void
 drm_gem_lru_move_tail(struct drm_gem_lru *lru, struct drm_gem_object *obj)
 {
-	mutex_lock(lru->lock);
+	mutex_lock(&obj->dev->gem_lru_mutex);
 	drm_gem_lru_move_tail_locked(lru, obj);
-	mutex_unlock(lru->lock);
+	mutex_unlock(&obj->dev->gem_lru_mutex);
 }
 EXPORT_SYMBOL(drm_gem_lru_move_tail);
 
@@ -1653,6 +1647,7 @@ EXPORT_SYMBOL(drm_gem_lru_move_tail);
  * of the shrink callback to check for this (ie. dma_resv_test_signaled())
  * or if necessary block until the buffer becomes idle.
  *
+ * @dev: DRM device the LRU belongs to
  * @lru: The LRU to scan
  * @nr_to_scan: The number of pages to try to reclaim
  * @remaining: The number of pages left to reclaim, should be initialized by caller
@@ -1660,7 +1655,8 @@ EXPORT_SYMBOL(drm_gem_lru_move_tail);
  * @ticket: Optional ww_acquire_ctx context to use for locking
  */
 unsigned long
-drm_gem_lru_scan(struct drm_gem_lru *lru,
+drm_gem_lru_scan(struct drm_device *dev,
+		 struct drm_gem_lru *lru,
 		 unsigned int nr_to_scan,
 		 unsigned long *remaining,
 		 bool (*shrink)(struct drm_gem_object *obj, struct ww_acquire_ctx *ticket),
@@ -1670,9 +1666,9 @@ drm_gem_lru_scan(struct drm_gem_lru *lru,
 	struct drm_gem_object *obj;
 	unsigned freed = 0;
 
-	drm_gem_lru_init(&still_in_lru, lru->lock);
+	drm_gem_lru_init(&still_in_lru);
 
-	mutex_lock(lru->lock);
+	mutex_lock(&dev->gem_lru_mutex);
 
 	while (freed < nr_to_scan) {
 		obj = list_first_entry_or_null(&lru->list, typeof(*obj), lru_node);
@@ -1695,7 +1691,7 @@ drm_gem_lru_scan(struct drm_gem_lru *lru,
 		 * rest of the loop body, to reduce contention with other
 		 * code paths that need the LRU lock
 		 */
-		mutex_unlock(lru->lock);
+		mutex_unlock(&dev->gem_lru_mutex);
 
 		if (ticket)
 			ww_acquire_init(ticket, &reservation_ww_class);
@@ -1729,7 +1725,7 @@ drm_gem_lru_scan(struct drm_gem_lru *lru,
 
 tail:
 		drm_gem_object_put(obj);
-		mutex_lock(lru->lock);
+		mutex_lock(&dev->gem_lru_mutex);
 	}
 
 	/*
@@ -1741,7 +1737,7 @@ tail:
 	list_splice_tail(&still_in_lru.list, &lru->list);
 	lru->count += still_in_lru.count;
 
-	mutex_unlock(lru->lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	return freed;
 }

drivers/gpu/drm/msm/msm_drv.c

@@ -128,11 +128,10 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv,
 	/*
 	 * Initialize the LRUs:
 	 */
-	mutex_init(&priv->lru.lock);
+	drm_gem_lru_init(&priv->lru.unbacked);
-	drm_gem_lru_init(&priv->lru.unbacked, &priv->lru.lock);
+	drm_gem_lru_init(&priv->lru.pinned);
-	drm_gem_lru_init(&priv->lru.pinned,   &priv->lru.lock);
+	drm_gem_lru_init(&priv->lru.willneed);
-	drm_gem_lru_init(&priv->lru.willneed, &priv->lru.lock);
+	drm_gem_lru_init(&priv->lru.dontneed);
-	drm_gem_lru_init(&priv->lru.dontneed, &priv->lru.lock);
 
 	/* Initialize stall-on-fault */
 	spin_lock_init(&priv->fault_stall_lock);
@@ -140,7 +139,7 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv,
 
 	/* Teach lockdep about lock ordering wrt. shrinker: */
 	fs_reclaim_acquire(GFP_KERNEL);
-	might_lock(&priv->lru.lock);
+	might_lock(&ddev->gem_lru_mutex);
 	fs_reclaim_release(GFP_KERNEL);
 
 	if (priv->kms_init) {

drivers/gpu/drm/msm/msm_drv.h

@@ -150,13 +150,6 @@ struct msm_drm_private {
 		 * DONTNEED state (ie. can be purged)
 		 */
 		struct drm_gem_lru dontneed;
-
-		/**
-		 * lock:
-		 *
-		 * Protects manipulation of all of the LRUs.
-		 */
-		struct mutex lock;
 	} lru;
 
 	struct notifier_block vmap_notifier;

drivers/gpu/drm/msm/msm_gem.c

@@ -177,11 +177,11 @@ static void update_lru_locked(struct drm_gem_object *obj)
 
 static void update_lru(struct drm_gem_object *obj)
 {
-	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct drm_device *dev = obj->dev;
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 	update_lru_locked(obj);
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 }
 
 static struct page **get_pages(struct drm_gem_object *obj)
@@ -292,11 +292,11 @@ void msm_gem_pin_obj_locked(struct drm_gem_object *obj)
 
 static void pin_obj_locked(struct drm_gem_object *obj)
 {
-	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct drm_device *dev = obj->dev;
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 	msm_gem_pin_obj_locked(obj);
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 }
 
 struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj)
@@ -487,16 +487,16 @@ int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct drm_gpuva *vma)
 
 void msm_gem_unpin_locked(struct drm_gem_object *obj)
 {
-	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct drm_device *dev = obj->dev;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
 	msm_gem_assert_locked(obj);
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 	msm_obj->pin_count--;
 	GEM_WARN_ON(msm_obj->pin_count < 0);
 	update_lru_locked(obj);
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 }
 
 /* Special unpin path for use in fence-signaling path, avoiding the need
@@ -507,10 +507,10 @@ void msm_gem_unpin_locked(struct drm_gem_object *obj)
  */
 void msm_gem_unpin_active(struct drm_gem_object *obj)
 {
-	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct drm_device *dev = obj->dev;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
-	GEM_WARN_ON(!mutex_is_locked(&priv->lru.lock));
+	GEM_WARN_ON(!mutex_is_locked(&dev->gem_lru_mutex));
 
 	msm_obj->pin_count--;
 	GEM_WARN_ON(msm_obj->pin_count < 0);
@@ -797,12 +797,12 @@ void msm_gem_put_vaddr(struct drm_gem_object *obj)
  */
 int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv)
 {
-	struct msm_drm_private *priv = obj->dev->dev_private;
+	struct drm_device *dev = obj->dev;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
 	msm_gem_lock(obj);
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 
 	if (msm_obj->madv != __MSM_MADV_PURGED)
 		msm_obj->madv = madv;
@@ -814,7 +814,7 @@ int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv)
 	 */
 	update_lru_locked(obj);
 
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	msm_gem_unlock(obj);
 
@@ -824,7 +824,6 @@ int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv)
 void msm_gem_purge(struct drm_gem_object *obj)
 {
 	struct drm_device *dev = obj->dev;
-	struct msm_drm_private *priv = obj->dev->dev_private;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
 	msm_gem_assert_locked(obj);
@@ -839,10 +838,10 @@ void msm_gem_purge(struct drm_gem_object *obj)
 
 	put_pages(obj);
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 	/* A one-way transition: */
 	msm_obj->madv = __MSM_MADV_PURGED;
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	drm_gem_free_mmap_offset(obj);
 

drivers/gpu/drm/msm/msm_gem_shrinker.c

@@ -178,7 +178,7 @@ msm_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc)
 		 * 'ticket' not needed on trylock paths
 		 */
 		stages[i].freed =
-			drm_gem_lru_scan(stages[i].lru, nr,
+			drm_gem_lru_scan(priv->dev, stages[i].lru, nr,
 					 &stages[i].remaining,
 					 stages[i].shrink,
 					 NULL);
@@ -247,7 +247,7 @@ msm_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr)
 	unsigned long remaining = 0;
 
 	for (idx = 0; lrus[idx] && unmapped < vmap_shrink_limit; idx++) {
-		unmapped += drm_gem_lru_scan(lrus[idx],
+		unmapped += drm_gem_lru_scan(priv->dev, lrus[idx],
 					     vmap_shrink_limit - unmapped,
 					     &remaining,
 					     vmap_shrink,

drivers/gpu/drm/msm/msm_gem_submit.c

@@ -352,7 +352,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit)
 
 static int submit_pin_objects(struct msm_gem_submit *submit)
 {
-	struct msm_drm_private *priv = submit->dev->dev_private;
+	struct drm_device *dev = submit->dev;
 	int i, ret = 0;
 
 	for (i = 0; i < submit->nr_bos; i++) {
@@ -381,11 +381,11 @@ static int submit_pin_objects(struct msm_gem_submit *submit)
 	 * get_pages() which could trigger reclaim.. and if we held the LRU lock
 	 * could trigger deadlock with the shrinker).
 	 */
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 	for (i = 0; i < submit->nr_bos; i++) {
 		msm_gem_pin_obj_locked(submit->bos[i].obj);
 	}
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	submit->bos_pinned = true;
 

drivers/gpu/drm/msm/msm_gem_vma.c

@@ -702,7 +702,7 @@ static struct dma_fence *
 msm_vma_job_run(struct drm_sched_job *_job)
 {
 	struct msm_vm_bind_job *job = to_msm_vm_bind_job(_job);
-	struct msm_drm_private *priv = job->vm->drm->dev_private;
+	struct drm_device *dev = job->vm->drm;
 	struct msm_gem_vm *vm = to_msm_vm(job->vm);
 	struct drm_gem_object *obj;
 	int ret = vm->unusable ? -EINVAL : 0;
@@ -745,13 +745,13 @@ msm_vma_job_run(struct drm_sched_job *_job)
 	if (ret)
 		msm_gem_vm_unusable(job->vm);
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 
 	job_foreach_bo (obj, job) {
 		msm_gem_unpin_active(obj);
 	}
 
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	/* VM_BIND ops are synchronous, so no fence to wait on: */
 	return NULL;
@@ -1305,7 +1305,7 @@ vm_bind_job_pin_objects(struct msm_vm_bind_job *job)
 			return PTR_ERR(pages);
 	}
 
-	struct msm_drm_private *priv = job->vm->drm->dev_private;
+	struct drm_device *dev = job->vm->drm;
 
 	/*
 	 * A second loop while holding the LRU lock (a) avoids acquiring/dropping
@@ -1314,10 +1314,10 @@ vm_bind_job_pin_objects(struct msm_vm_bind_job *job)
 	 * get_pages() which could trigger reclaim.. and if we held the LRU lock
 	 * could trigger deadlock with the shrinker).
 	 */
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 	job_foreach_bo (obj, job)
 		msm_gem_pin_obj_locked(obj);
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	job->bos_pinned = true;
 

drivers/gpu/drm/msm/msm_ringbuffer.c

@@ -16,13 +16,13 @@ static struct dma_fence *msm_job_run(struct drm_sched_job *job)
 	struct msm_gem_submit *submit = to_msm_submit(job);
 	struct msm_fence_context *fctx = submit->ring->fctx;
 	struct msm_gpu *gpu = submit->gpu;
-	struct msm_drm_private *priv = gpu->dev->dev_private;
+	struct drm_device *dev = gpu->dev;
 	unsigned nr_cmds = submit->nr_cmds;
 	int i;
 
 	msm_fence_init(submit->hw_fence, fctx);
 
-	mutex_lock(&priv->lru.lock);
+	mutex_lock(&dev->gem_lru_mutex);
 
 	for (i = 0; i < submit->nr_bos; i++) {
 		struct drm_gem_object *obj = submit->bos[i].obj;
@@ -32,7 +32,7 @@ static struct dma_fence *msm_job_run(struct drm_sched_job *job)
 
 	submit->bos_pinned = false;
 
-	mutex_unlock(&priv->lru.lock);
+	mutex_unlock(&dev->gem_lru_mutex);
 
 	/* TODO move submit path over to using a per-ring lock.. */
 	mutex_lock(&gpu->lock);

drivers/gpu/drm/v3d/v3d_sched.c

@@ -125,20 +125,6 @@ v3d_performance_query_info_free(struct v3d_performance_query_info *query_info,
 	}
 }
 
-static void
-v3d_cpu_job_free(struct drm_sched_job *sched_job)
-{
-	struct v3d_cpu_job *job = to_cpu_job(sched_job);
-
-	v3d_timestamp_query_info_free(&job->timestamp_query,
-				      job->timestamp_query.count);
-
-	v3d_performance_query_info_free(&job->performance_query,
-					job->performance_query.count);
-
-	v3d_job_cleanup(&job->base);
-}
-
 static void
 v3d_switch_perfmon(struct v3d_dev *v3d, struct v3d_job *job)
 {
@@ -830,7 +816,7 @@ static const struct drm_sched_backend_ops v3d_cache_clean_sched_ops = {
 
 static const struct drm_sched_backend_ops v3d_cpu_sched_ops = {
 	.run_job = v3d_cpu_job_run,
-	.free_job = v3d_cpu_job_free
+	.free_job = v3d_sched_job_free
 };
 
 static int

drivers/gpu/drm/v3d/v3d_submit.c

@@ -123,6 +123,24 @@ v3d_render_job_free(struct kref *ref)
 	v3d_job_free(ref);
 }
 
+static void
+v3d_cpu_job_free(struct kref *ref)
+{
+	struct v3d_cpu_job *job = container_of(ref, struct v3d_cpu_job,
+					       base.refcount);
+
+	v3d_timestamp_query_info_free(&job->timestamp_query,
+				      job->timestamp_query.count);
+
+	v3d_performance_query_info_free(&job->performance_query,
+					job->performance_query.count);
+
+	if (job->indirect_csd.indirect)
+		drm_gem_object_put(job->indirect_csd.indirect);
+
+	v3d_job_free(ref);
+}
+
 void v3d_job_cleanup(struct v3d_job *job)
 {
 	if (!job)
@@ -1302,7 +1320,7 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
 	trace_v3d_submit_cpu_ioctl(&v3d->drm, cpu_job->job_type);
 
 	ret = v3d_job_init(v3d, file_priv, &cpu_job->base,
-			   v3d_job_free, 0, &se, V3D_CPU);
+			   v3d_cpu_job_free, 0, &se, V3D_CPU);
 	if (ret) {
 		v3d_job_deallocate((void *)&cpu_job);
 		goto fail;
@@ -1385,8 +1403,6 @@ fail:
 	v3d_job_cleanup((void *)csd_job);
 	v3d_job_cleanup(clean_job);
 	v3d_put_multisync_post_deps(&se);
-	kvfree(cpu_job->timestamp_query.queries);
-	kvfree(cpu_job->performance_query.queries);
 
 	return ret;
 }

drivers/gpu/drm/virtio/virtgpu_drv.h

@@ -317,6 +317,7 @@ virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents
 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
 			      struct drm_gem_object *obj);
 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
+int virtio_gpu_lock_one_resv_uninterruptible(struct virtio_gpu_object_array *objs);
 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
 				struct dma_fence *fence);

drivers/gpu/drm/virtio/virtgpu_gem.c

@@ -238,6 +238,23 @@ int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs)
 	return ret;
 }
 
+int virtio_gpu_lock_one_resv_uninterruptible(struct virtio_gpu_object_array *objs)
+{
+	int ret;
+
+	if (objs->nents != 1)
+		return -EINVAL;
+
+	dma_resv_lock(objs->objs[0]->resv, NULL);
+
+	ret = dma_resv_reserve_fences(objs->objs[0]->resv, 1);
+	if (ret) {
+		virtio_gpu_array_unlock_resv(objs);
+		return ret;
+	}
+	return 0;
+}
+
 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs)
 {
 	if (objs->nents == 1) {

drivers/gpu/drm/virtio/virtgpu_plane.c

@@ -215,7 +215,10 @@ static void virtio_gpu_resource_flush(struct drm_plane *plane,
 		if (!objs)
 			return;
 		virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
-		virtio_gpu_array_lock_resv(objs);
+		if (virtio_gpu_lock_one_resv_uninterruptible(objs)) {
+			virtio_gpu_array_put_free(objs);
+			return;
+		}
 		virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, x, y,
 					      width, height, objs,
 					      vgplane_st->fence);
@@ -459,7 +462,10 @@ static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,
 		if (!objs)
 			return;
 		virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
-		virtio_gpu_array_lock_resv(objs);
+		if (virtio_gpu_lock_one_resv_uninterruptible(objs)) {
+			virtio_gpu_array_put_free(objs);
+			return;
+		}
 		virtio_gpu_cmd_transfer_to_host_2d
 			(vgdev, 0,
 			 plane->state->crtc_w,

include/drm/drm_device.h

@@ -375,6 +375,13 @@ struct drm_device {
 	 * Root directory for debugfs files.
 	 */
 	struct dentry *debugfs_root;
+
+	/**
+	 * @gem_lru_mutex:
+	 *
+	 * Lock protecting movement of GEM objects between LRUs.
+	 */
+	struct mutex gem_lru_mutex;
 };
 
 void drm_dev_set_dma_dev(struct drm_device *dev, struct device *dma_dev);

include/drm/drm_gem.h

@@ -245,17 +245,11 @@ struct drm_gem_object_funcs {
  * for lockless &shrinker.count_objects, and provides
  * &drm_gem_lru_scan for driver's &shrinker.scan_objects
  * implementation.
+ *
+ * Any access to this kind of object must be done with
+ * drm_device::gem_lru_mutex held.
  */
 struct drm_gem_lru {
-	/**
-	 * @lock:
-	 *
-	 * Lock protecting movement of GEM objects between LRUs.  All
-	 * LRUs that the object can move between should be protected
-	 * by the same lock.
-	 */
-	struct mutex *lock;
-
 	/**
 	 * @count:
 	 *
@@ -453,6 +447,9 @@ struct drm_gem_object {
 	 * @lru:
 	 *
 	 * The current LRU list that the GEM object is on.
+	 *
+	 * Access to this field must be done with drm_device::gem_lru_mutex
+	 * held.
 	 */
 	struct drm_gem_lru *lru;
 };
@@ -610,12 +607,13 @@ void drm_gem_unlock_reservations(struct drm_gem_object **objs, int count,
 int drm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 			    u32 handle, u64 *offset);
 
-void drm_gem_lru_init(struct drm_gem_lru *lru, struct mutex *lock);
+void drm_gem_lru_init(struct drm_gem_lru *lru);
 void drm_gem_lru_remove(struct drm_gem_object *obj);
 void drm_gem_lru_move_tail_locked(struct drm_gem_lru *lru, struct drm_gem_object *obj);
 void drm_gem_lru_move_tail(struct drm_gem_lru *lru, struct drm_gem_object *obj);
 unsigned long
-drm_gem_lru_scan(struct drm_gem_lru *lru,
+drm_gem_lru_scan(struct drm_device *dev,
+		 struct drm_gem_lru *lru,
 		 unsigned int nr_to_scan,
 		 unsigned long *remaining,
 		 bool (*shrink)(struct drm_gem_object *obj, struct ww_acquire_ctx *ticket),