From 24a1bc39bb7c4af1c5565816c66338ae231cf41c Mon Sep 17 00:00:00 2001
From: zhangkuili <zhangkuili@xiaomi.com>
Date: Tue, 29 May 2018 10:23:29 +0800
Subject: [Stability][hwui] check mmap return value

If mmap failed, it return -1 (MAP_FAILED)

Bug:110507462
Test: manual

Change-Id: I3d0bac2e7c8b0bdc9cfb4ebb7b766d858876679d
Signed-off-by: zhangkuili <zhangkuili@xiaomi.com>
---
 libs/hwui/service/GraphicsStatsService.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/hwui/service/GraphicsStatsService.cpp b/libs/hwui/service/GraphicsStatsService.cpp
index f7a90b0a65ec..32b5132a6fa3 100644
--- a/libs/hwui/service/GraphicsStatsService.cpp
+++ b/libs/hwui/service/GraphicsStatsService.cpp
@@ -134,7 +134,7 @@ bool GraphicsStatsService::parseFromFile(const std::string& path, service::Graph
         return false;
     }
     void* addr = mmap(nullptr, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
-    if (!addr) {
+    if (addr == MAP_FAILED) {
         int err = errno;
         // The file not existing is normal for addToDump(), so only log if
         // we get an unexpected error
-- 
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