Looks like somebody is creating an empty dma_fence_array.
Signed-off-by: Christian König <christian.koe...@amd.com>
---
drivers/dma-buf/dma-fence-array.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/dma-buf/dma-fence-array.c
b/drivers/dma-buf/dma-fence-array.c
index 52b85d292383..5c8a7084577b 100644
--- a/drivers/dma-buf/dma-fence-array.c
+++ b/drivers/dma-buf/dma-fence-array.c
@@ -159,6 +159,8 @@ struct dma_fence_array *dma_fence_array_create(int
num_fences,
struct dma_fence_array *array;
size_t size = sizeof(*array);
+ WARN_ON(!num_fences || !fences);
+
/* Allocate the callback structures behind the array. */
size += num_fences * sizeof(struct dma_fence_array_cb);
array = kzalloc(size, GFP_KERNEL);
@@ -231,6 +233,9 @@ struct dma_fence *dma_fence_array_first(struct dma_fence
*head)
if (!array)
return head;
+ if (!array->num_fences)
+ return NULL;
+
return array->fences[0];
}
EXPORT_SYMBOL(dma_fence_array_first);
--
2.25.1
