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Commit d72b2608 authored by Tim Murray's avatar Tim Murray Committed by Adam Seaton
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DO NOT MERGE ANYWHERE (nyc-dr1-dev) 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
(cherry picked from commit 38ee337f)
parent b78a9bc5

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

+2 −1
Original line number Diff line number Diff line
@@ -55,7 +55,8 @@ public class SchedulingPolicyService extends ISchedulingPolicyService.Stub { 
            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;

        }