Static analysis showed that unitialized array is being used for compare. At line 850 when a dma_mapping_error() occurs, it jumps to dma_unmap. At this point, dma_srcs has not been initialized. However, the code after dma_unmap label checks dma_srcs for a comparison and thus is comparing to random garbage in the array. Given that when dest_dma is being mapped this is the first instance of mapping DMA memory and failed, there is really nothing to be cleaned up and thus should jump to free_resources label instead. Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx> --- drivers/dma/ioat/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index d406056..3c9b5f1 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -828,7 +828,7 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) dest_dma = dma_map_page(dev, dest, 0, PAGE_SIZE, DMA_FROM_DEVICE); if (dma_mapping_error(dev, dest_dma)) - goto dma_unmap; + goto free_resources; for (i = 0; i < IOAT_NUM_SRC_TEST; i++) dma_srcs[i] = DMA_ERROR_CODE; -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
