commit 51a22a12ab370933a35463f5c81223132ec64dcb
author Dmitriy Ivanov <dimitry@google.com> Fri Aug 08 16:57:15 2014 -0700
committer Dmitriy Ivanov <dimitry@google.com> Mon Aug 11 09:22:48 2014 -0700
tree 83033d1672090d93a22d349669bbe9159322f4e8
parent a0db46418757dd1b399acb97ff42083cc274e8ae

Label pages mapped by linker_allocator

Change-Id: I7e0bf29bc1a480e9be0d1ae573ca1063d90d82ff

linker/linker_allocator.cpp

diff --git a/linker/linker_allocator.cpp b/linker/linker_allocator.cpp
index f5d3745..92220e8 100644
--- a/linker/linker_allocator.cpp
+++ b/linker/linker_allocator.cpp
@@ -18,6 +18,8 @@
 #include <sys/mman.h>
 #include <unistd.h>
 
+#include "private/bionic_prctl.h"
+
 struct LinkerAllocatorPage {
   LinkerAllocatorPage* next;
   uint8_t bytes[PAGE_SIZE-sizeof(LinkerAllocatorPage*)];
@@ -96,6 +98,9 @@
   if (page == MAP_FAILED) {
     abort(); // oom
   }
+
+  prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, page, PAGE_SIZE, "linker_alloc");
+
   memset(page, 0, PAGE_SIZE);
 
   FreeBlockInfo* first_block = reinterpret_cast<FreeBlockInfo*>(page->bytes);