DivestOS/Patches/Common/android_frameworks_av/0001-HM-No_RLIMIT_AS.patch
Tad 25cc717ec2 Use GrapheneOS' hardened memory allocator
+ 16.0: some other misc hardening patches from GrapheneOS
  - always restrict access to Build.SERIAL
  - don't grant location permission to system browsers
  - fbe: pad filenames more
+ 16.0: Contacts: remove Privacy Policy and Terms of Service links
2019-04-04 01:07:58 -04:00

34 lines
1.2 KiB
Diff

From 14800a3e7070240a314cbd695f71984a888cc90f Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Wed, 5 Dec 2018 09:29:25 -0500
Subject: [PATCH] avoid setting RLIMIT_AS with hardened malloc
This needs to be ported to a better mechanism like memory control groups
in order to remain compatible with hardening mechanisms based on large
PROT_NONE address space reservations.
Change-Id: Ibfb7164d764fcb9244055953bedc9a1c424cedcb
---
media/libmedia/MediaUtils.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/media/libmedia/MediaUtils.cpp b/media/libmedia/MediaUtils.cpp
index bcdc3bdcf..de217c70b 100644
--- a/media/libmedia/MediaUtils.cpp
+++ b/media/libmedia/MediaUtils.cpp
@@ -38,6 +38,14 @@ void limitProcessMemory(
return;
}
+#ifdef __LP64__
+ // This needs to be ported to a better mechanism like memory control groups
+ // in order to remain compatible with hardening mechanisms based on large
+ // PROT_NONE address space reservations.
+ ALOGW("Running with hardened malloc implementation, skip enforcing memory limitations.");
+ return;
+#endif
+
long pageSize = sysconf(_SC_PAGESIZE);
long numPages = sysconf(_SC_PHYS_PAGES);
size_t maxMem = SIZE_MAX;