+From 0d3ac427e34f12b1a33646d47ef3dc390a9b569d Mon Sep 17 00:00:00 2001
+From: Prasad J Pandit <pjp@fedoraproject.org>
+Date: Wed, 12 Oct 2016 14:40:55 +0530
+Subject: [PATCH 1/2] net: rocker: set limit to DMA buffer size
+
+Rocker network switch emulator has test registers to help debug
+DMA operations. While testing host DMA access, a buffer address
+is written to register 'TEST_DMA_ADDR' and its size is written to
+register 'TEST_DMA_SIZE'. When performing TEST_DMA_CTRL_INVERT
+test, if DMA buffer size was greater than 'INT_MAX', it leads to
+an invalid buffer access. Limit the DMA buffer size to avoid it.
+
+Reported-by: Huawei PSIRT <psirt@huawei.com>
+Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
+---
+ hw/net/rocker/rocker.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/net/rocker/rocker.c b/hw/net/rocker/rocker.c
+index 30f2ce4..e9d215a 100644
+--- a/hw/net/rocker/rocker.c
++++ b/hw/net/rocker/rocker.c
+@@ -860,7 +860,7 @@ static void rocker_io_writel(void *opaque, hwaddr addr, uint32_t val)
+ rocker_msix_irq(r, val);
+ break;
+ case ROCKER_TEST_DMA_SIZE:
+- r->test_dma_size = val;
++ r->test_dma_size = val & 0xFFFF;
+ break;
+ case ROCKER_TEST_DMA_ADDR + 4:
+ r->test_dma_addr = ((uint64_t)val) << 32 | r->lower32;
+--
+2.1.4
+