From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ryo Hashimoto <hashimoto@google.com>
Date: Wed, 14 Sep 2022 17:28:03 +0900
Subject: [PATCH] DO NOT MERGE: Workaround for mmap error when building

To fix errors which happen when building Android P on a workstation
running Linux kernel 5.18.

Bug: 235181357
Test: build
Change-Id: I92e5a7b84c8018d50c38ec386428e3191cd5600c
---
 runtime/mem_map.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/runtime/mem_map.cc b/runtime/mem_map.cc
index b9d51c1125..f034a3db4f 100644
--- a/runtime/mem_map.cc
+++ b/runtime/mem_map.cc
@@ -504,6 +504,11 @@ MemMap* MemMap::MapFileAtAddress(uint8_t* expected_ptr,
     DCHECK(ContainedWithinExistingMap(expected_ptr, byte_count, error_msg))
         << ((error_msg != nullptr) ? *error_msg : std::string());
     flags |= MAP_FIXED;
+#if !defined(ART_TARGET)
+  } else if (expected_ptr) {
+#define MAP_FIXED_NOREPLACE 0x100000
+    flags |= MAP_FIXED_NOREPLACE;
+#endif
   } else {
     CHECK_EQ(0, flags & MAP_FIXED);
     // Don't bother checking for an overlapping region here. We'll