commit 3f3eaa02e57ee8fc91ae508bea20c4b81b7628f7
author Tim Murray <timmurray@google.com> Thu Aug 18 11:13:26 2016 -0700
committer gitbuildkicker <android-build@google.com> Thu Aug 18 14:56:31 2016 -0700
tree adb06a6242e4684b4f6632cf1d86748a0f1fe34a
parent ed0051c62455742077d18b7dad287b66433bf9aa

Prevent FIFO threads from creating more FIFO threads.

SCHED_FIFO threads shouldn't be able to arbitrarily create more
SCHED_FIFO threads.

bug 30898724

Change-Id: I3704b47b88b573313e9b1610556648c8595d4108

services/core/java/com/android/server/os/SchedulingPolicyService.java

diff --git a/services/core/java/com/android/server/os/SchedulingPolicyService.java b/services/core/java/com/android/server/os/SchedulingPolicyService.java
index f98012b..62c9f4c 100644
--- a/services/core/java/com/android/server/os/SchedulingPolicyService.java
+++ b/services/core/java/com/android/server/os/SchedulingPolicyService.java
@@ -55,7 +55,8 @@
             Process.setThreadGroup(tid, Binder.getCallingPid() == pid ?
                     Process.THREAD_GROUP_AUDIO_SYS : Process.THREAD_GROUP_AUDIO_APP);
             // must be in this order or it fails the schedulability constraint
-            Process.setThreadScheduler(tid, Process.SCHED_FIFO, prio);
+            Process.setThreadScheduler(tid, Process.SCHED_FIFO | Process.SCHED_RESET_ON_FORK,
+                prio);
         } catch (RuntimeException e) {
             return PackageManager.PERMISSION_DENIED;
         }