[PDFBOX-5485] Stackoverflow writing out a subset of PDF pages - COSWriterObjectStream

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0 PDFBox
• Fix Version/s: 3.0.0 PDFBox
• Component/s: Writing
• Environment: MacOS, but likely not OS specific.
• Assignee: Andreas Lehmkühler
• Reporter: Owen McGovern
• Created: 04/Aug/22 15:56
• Updated: 18/Aug/23 05:46
• Resolved: 12/Aug/22 08:43

Description

Version:  org.apache.pdfbox:pdfbox:3.0.0-alpha3

 

In a subset of PDFs I process, I cannot extract a range of PDF pages and write them out to a new PDF.   ( As part of test code )

Here's the Kotlin code I use 

fun extractPages(documentName: String, fromPage: Int, toPage: Int) : Path {
   val pdfFile = Paths.get("data", "input", "PDFS", "${documentName}.pdf")
   val pdfPagesFile = Paths.get("data", "input", "PDFS", "${documentName}_Page_$fromPage-$toPage.pdf")        
   val pdfDoc = org.apache.pdfbox.Loader.loadPDF(pdfFile.toFile())
   val pageExtractor = PageExtractor(pdfDoc, fromPage, toPage)        
   val pdfPages = pageExtractor.extract()
   pdfPages.save(pdfPagesFile.toFile())
   return pdfPagesFile
}

It doesn't occur in all PDFS... maybe 10-20% of the PDFs I use. 

 

The a slice of the stack trace is 

java.lang.StackOverflowError
    at java.base/java.util.HashMap.tableSizeFor(HashMap.java:380)
    at java.base/java.util.HashMap.<init>(HashMap.java:453)
    at java.base/java.util.LinkedHashMap.<init>(LinkedHashMap.java:347)
    at java.base/java.util.HashSet.<init>(HashSet.java:162)
    at java.base/java.util.LinkedHashSet.<init>(LinkedHashSet.java:154)
    at org.apache.pdfbox.util.SmallMap.entrySet(SmallMap.java:380)
    at org.apache.pdfbox.cos.COSDictionary.entrySet(COSDictionary.java:1225)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:336)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:230)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSArray(COSWriterObjectStream.java:319)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:226)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:341)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:230)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:341)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:230)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSArray(COSWriterObjectStream.java:319)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:226)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:341)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:230)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:341)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:230)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSArray(COSWriterObjectStream.java:319)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:226)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:341)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeObject(COSWriterObjectStream.java:230)
    at org.apache.pdfbox.pdfwriter.compress.COSWriterObjectStream.writeCOSDictionary(COSWriterObjectStream.java:341) 

As I mentioned, hits some PDFs, not all.

I legally cannot share the original source PDFs but it looks like a recursive loop in writeCOSDictionary and writeObject in COSWriterObjectStream.