[3/3] v4l2: vb2-dma-sg: fix potential security hole

Commit Message

Marek Szyprowski March 10, 2011, 12:28 p.m. UTC

None

Patch

diff --git a/drivers/media/video/videobuf2-dma-sg.c b/drivers/media/video/videobuf2-dma-sg.c
index d5311ff..b2d9485 100644
--- a/drivers/media/video/videobuf2-dma-sg.c
+++ b/drivers/media/video/videobuf2-dma-sg.c
@@ -62,7 +62,7 @@  static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size)
 		goto fail_pages_array_alloc;
 
 	for (i = 0; i < buf->sg_desc.num_pages; ++i) {
-		buf->pages[i] = alloc_page(GFP_KERNEL);
+		buf->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO);
 		if (NULL == buf->pages[i])
 			goto fail_pages_alloc;
 		sg_set_page(&buf->sg_desc.sglist[i],