[CASSANDRA-16294] Potential NPE in JVMStabilityInspector

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.0.24, 3.11.10, 4.0-beta4, 4.0
• Component/s: Legacy/Core
• Bug Category: Degradation - Other Exception
• Severity: Low
• Complexity: Low Hanging Fruit
• Discovered By: User Report
• Platform: All
• Since Version: 3.0.0

Source Control Link

https://github.com/apache/cassandra/commit/068d87acfbdf384f883ca17895c40a7a36a507b0

Test and Documentation Plan

Extended JVMStabilityInspectorTest

• Assignee: Sam Tunnicliffe
• Reporter: Sam Tunnicliffe

Authors

Sam Tunnicliffe

Reviewers

David Capwell

• Created: 20/Nov/20 16:56
• Updated: 03/Jan/21 16:58
• Resolved: 23/Nov/20 15:37

Description

On either a FileNotFoundException or SocketException, JVMStabilityInspector checks the error message for the string "Too many open files". However, both of these exceptions have a constructor which sets a null message, which can lead to NPE if handled.