From: Janghyuck Kim <janghyuck.kim@samsung.com>
Date: Mon, 5 Sep 2016 03:21:20 +0000 (+0900)
Subject: [COMMON] iommu/exynos: check condition before pointer access
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=99f2e2e54cd12c1f3a51feb12b14e57486946891;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[COMMON] iommu/exynos: check condition before pointer access

Fix Svace : 64214, 64219

Change-Id: I5ab4d2e84d4a510693978b6aac97ebf8c037119e
Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>
---

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 6816d48c830f..335068108c34 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -644,6 +644,8 @@ static int __init sysmmu_parse_dt(struct device *sysmmu,
 
 		switch (prop & WAY_TYPE_MASK) {
 		case _PRIVATE_WAY_ID:
+			BUG_ON(!priv_id_cfg || priv_id_idx >= priv_id_cnt);
+
 			priv_id_cfg[priv_id_idx].cfg = prop & ~WAY_TYPE_MASK;
 			ret = of_property_read_u32_index(sysmmu->of_node,
 				props_name, i+1, &priv_id_cfg[priv_id_idx].id);
@@ -655,6 +657,8 @@ static int __init sysmmu_parse_dt(struct device *sysmmu,
 			priv_id_idx++;
 			break;
 		case _PRIVATE_WAY_ADDR:
+			BUG_ON(!priv_addr_cfg || priv_addr_idx >= priv_addr_cnt);
+
 			priv_addr_cfg[priv_addr_idx].cfg = prop & ~WAY_TYPE_MASK;
 			priv_addr_idx++;
 			break;