freezer: handle exception in locks file format am: 911519f25a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13534713

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: If3c8c1c8097f34cc83ae5d5728b40a91d23257ce

core/java/android/os/Process.java

@@ -1405,7 +1405,7 @@ public class Process {
      *
      * @hide
      */
-    public static boolean hasFileLocks(int pid) throws IOException {
+    public static boolean hasFileLocks(int pid) throws Exception {
         BufferedReader br = null;
 
         try {
@@ -1417,8 +1417,13 @@ public class Process {
 
                 for (int i = 0; i < 5 && st.hasMoreTokens(); i++) {
                     String str = st.nextToken();
-                    if (i == 4 && Integer.parseInt(str) == pid) {
-                        return true;
+                    try {
+                        if (i == 4 && Integer.parseInt(str) == pid) {
+                            return true;
+                        }
+                    } catch (NumberFormatException nfe) {
+                        throw new Exception("Exception parsing /proc/locks at \" "
+                                + line +  " \", token #" + i);
                     }
                 }
             }

services/core/java/com/android/server/am/CachedAppOptimizer.java

@@ -1114,7 +1114,7 @@ public final class CachedAppOptimizer {
                     }
                     return;
                 }
-            } catch (IOException e) {
+            } catch (Exception e) {
                 Slog.e(TAG_AM, "Not freezing. Unable to check file locks for " + name + "(" + pid
                         + "): " + e);
                 return;
@@ -1192,7 +1192,7 @@ public final class CachedAppOptimizer {
                         unfreezeAppLocked(proc);
                     }
                 }
-            } catch (IOException e) {
+            } catch (Exception e) {
                 Slog.e(TAG_AM, "Unable to check file locks for " + name + "(" + pid + "): " + e);
                 synchronized (mAm) {
                     unfreezeAppLocked(proc);