Merge tag 'v4.15-rc1' into next-seccomp

Linux 4.15-rc1

1 files changed, 18 insertions, 2 deletions

diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index ea4cc3dde4f1..1b34d210452c 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -1495,14 +1495,22 @@ void debug_dma_alloc_coherent(struct device *dev, size_t size,
 	if (!entry)
 		return;
 
+	/* handle vmalloc and linear addresses */
+	if (!is_vmalloc_addr(virt) && !virt_to_page(virt))
+		return;
+
 	entry->type      = dma_debug_coherent;
 	entry->dev       = dev;
-	entry->pfn	 = page_to_pfn(virt_to_page(virt));
 	entry->offset	 = offset_in_page(virt);
 	entry->size      = size;
 	entry->dev_addr  = dma_addr;
 	entry->direction = DMA_BIDIRECTIONAL;
 
+	if (is_vmalloc_addr(virt))
+		entry->pfn = vmalloc_to_pfn(virt);
+	else
+		entry->pfn = page_to_pfn(virt_to_page(virt));
+
 	add_dma_entry(entry);
 }
 EXPORT_SYMBOL(debug_dma_alloc_coherent);
@@ -1513,13 +1521,21 @@ void debug_dma_free_coherent(struct device *dev, size_t size,
 	struct dma_debug_entry ref = {
 		.type           = dma_debug_coherent,
 		.dev            = dev,
-		.pfn		= page_to_pfn(virt_to_page(virt)),
 		.offset		= offset_in_page(virt),
 		.dev_addr       = addr,
 		.size           = size,
 		.direction      = DMA_BIDIRECTIONAL,
 	};
 
+	/* handle vmalloc and linear addresses */
+	if (!is_vmalloc_addr(virt) && !virt_to_page(virt))
+		return;
+
+	if (is_vmalloc_addr(virt))
+		ref.pfn = vmalloc_to_pfn(virt);
+	else
+		ref.pfn = page_to_pfn(virt_to_page(virt));
+
 	if (unlikely(dma_debug_disabled()))
 		return;