[PDFBOX-4450] java.lang.OutOfMemoryError when validating pdf

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.13
• Fix Version/s: 2.0.14, 3.0.0 PDFBox
• Component/s: Preflight
• Assignee: Tilman Hausherr
• Reporter: Dana Shaw
• Created: 30/Jan/19 19:08
• Updated: 28/Feb/19 17:45
• Resolved: 03/Feb/19 13:05

Description

Getting an out of memory exception when attempting to use preflight to validate pdfs.

 

Env:

Linux 64 bit (arch linux)

Java 8

java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

JVM args used to test: 

java -Xmx2048m -Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider

 

PDF that is blowing up 

lean-from-the-trenches.pdf

 

Console output

Jan 30, 2019 10:25:58 AM org.apache.pdfbox.pdmodel.font.PDType1Font <init>
WARNING: Using fallback font ArialMT for base font Symbol
Jan 30, 2019 10:25:58 AM org.apache.pdfbox.pdmodel.font.PDType1Font <init>
WARNING: Using fallback font ArialMT for base font ZapfDingbats
Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Arrays.copyOfRange(Arrays.java:3664)
at java.lang.String.<init>(String.java:207)
at java.lang.StringBuilder.toString(StringBuilder.java:407)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1587)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1587)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1587)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1587)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1587)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.getDictionaryString(COSDictionary.java:1559)
at org.apache.pdfbox.cos.COSDictionary.toString(COSDictionary.java:1531)
at org.apache.pdfbox.preflight.xobject.XObjFormValidator.checkGroup(XObjFormValidator.java:138)
at org.apache.pdfbox.preflight.xobject.XObjFormValidator.validate(XObjFormValidator.java:73)
at org.apache.pdfbox.preflight.process.reflect.GraphicObjectPageValidationProcess.validate(GraphicObjectPageValidationProcess.java:74)
at org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:84)
at org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:57)
at org.apache.pdfbox.preflight.process.reflect.ResourcesValidationProcess.validateXObjects(ResourcesValidationProcess.java:224)
at org.apache.pdfbox.preflight.process.reflect.ResourcesValidationProcess.validate(ResourcesValidationProcess.java:81)
at org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:84)

 

Code used:

 

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.apache.pdfbox.preflight.PreflightDocument;
import org.apache.pdfbox.preflight.ValidationResult;
import org.apache.pdfbox.preflight.ValidationResult.ValidationError;
import org.apache.pdfbox.preflight.parser.PreflightParser;

public class Validator {
  private File file = null;
  private List<ValidationError> errorList = new ArrayList<ValidationError>();

  public Validator(File file) {
    this.file = file;
  }

  public List<ValidationError> getErrors(){
    return errorList;
  }

  public boolean validate() throws Exception{
    PreflightParser parser = null;
    PreflightDocument document = null;
    ValidationResult result = null;
    try {
      parser = new PreflightParser(file);
      parser.parse();
      document = parser.getPreflightDocument();
      document.validate();
      result = document.getResult();
      errorList = result.getErrorsList();
    }
    catch(Exception e) {
      throw e;
    }
    finally {
      if(document != null) {
        try {
          document.close();
        }catch(Exception ignored) {}
      }
      parser = null;
      document = null;
      result = null;
    }
    return errorList.size() > 0 ? true : false;
  }
}

 

 

Issue Links

• relates to: PDFBOX-4384 PDF/A Document Validation out of memory
• links to: java.lang.OutOfMemoryError when validating pdf with pdfbox preflight 2.0.13
• links to: NPE in TransparencyGraphicsState.copyPropertiesFormExtGState()