https://bz.apache.org/bugzilla/show_bug.cgi?id=64015
Bug ID: 64015
Summary: Avoid BitSet at least in xslf
Product: POI
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: XSLF
Assignee: dev@poi.apache.org
Reporter: talli...@apache.org
Target Milestone: ---
On https://issues.apache.org/jira/browse/TIKA-3017, a user shared a 19kb pptx
file that requires 2GB to parse or else throws an OOM. The problem appears to
be that BitSet is horribly memory inefficient on large integers and there are
some shape ids with very large numbers. Let's switch this to a simple HashSet
and look for other BitSet oom vulnerabilities throughout the codebase.
Executor task launch worker for task 47360
at java.lang.OutOfMemoryError.<init>()V (OutOfMemoryError.java:48)
at java.util.Arrays.copyOf([JI)[J (Arrays.java:3308)
at java.util.BitSet.ensureCapacity(I)V (BitSet.java:337)
at java.util.BitSet.expandTo(I)V (BitSet.java:352)
at java.util.BitSet.set(I)V (BitSet.java:447)
at org.apache.poi.xslf.usermodel.XSLFSheet.registerShapeId(I)V
(XSLFSheet.java:123)
at org.apache.poi.xslf.usermodel.XSLFDrawing.<init>
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