From 550f45bc83e7fb4ff454516c20ccfa674f771e37 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 21 Apr 2015 06:31:10 -0300 Subject: [PATCH] [media] v4l: xilinx: harmless buffer overflow My static checker warns that the name of the port can be 15 characters when you consider the NUL terminator and that's one more than the 14 characters in name[]. Maybe it's an off-by-one? It's unlikely that we hit the limit and even if we do the overflow will only affect one of the two bytes of padding so it's harmless. Still let's fix it and also change the sprintf() to snprintf(). Signed-off-by: Dan Carpenter Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/xilinx/xilinx-dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index efde88adf624..98e50e446d57 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -653,7 +653,7 @@ static const struct v4l2_file_operations xvip_dma_fops = { int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma, enum v4l2_buf_type type, unsigned int port) { - char name[14]; + char name[16]; int ret; dma->xdev = xdev; @@ -725,7 +725,7 @@ int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma, } /* ... and the DMA channel. */ - sprintf(name, "port%u", port); + snprintf(name, sizeof(name), "port%u", port); dma->dma = dma_request_slave_channel(dma->xdev->dev, name); if (dma->dma == NULL) { dev_err(dma->xdev->dev, "no VDMA channel found\n"); -- 2.20.1