From: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Memory allocated by alloc_page() function might contain some potentially
important data from other system processes. The patch adds a flag to
zero the allocated page before giving it to videobuf2 (and then to
userspace).
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
drivers/media/video/videobuf2-dma-sg.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
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],
--
1.7.1.569.g6f426
--
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