[LUCENE-5362] IndexReader and friends should check ref count when incrementing

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.6
• Fix Version/s: 4.7, 6.0
• Lucene Fields: New, Patch Available
• Assignee: Simon Willnauer
• Reporter: Simon Willnauer
• Created: 06/Dec/13 20:07
• Updated: 28/Aug/22 13:57
• Resolved: 08/Dec/13 10:12

Description

IndexReader and SegmentCoreReaders blindly increments it's refcount which could already be counted down to 0 which might allow an IndexReader to "rise from the dead" and use an already closed SCR instance. Even if that is caught we should try best effort to raise ACE asap.