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  1. Hadoop Common
  2. HADOOP-10522

JniBasedUnixGroupMapping mishandles errors

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.4.1
    • Component/s: None
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      The mishandling of errors in the jni user-to-groups mapping modules can cause segmentation faults in subsequent calls. Here are the bugs:

      1) If hadoop_user_info_fetch() returns an error code that is not ENOENT, the error may not be handled at all. This bug was found by Chris Nauroth.

      2) In hadoop_user_info_fetch() and hadoop_group_info_fetch(), the global errno is directly used. This is not thread-safe and could be the cause of some failures that disappeared after enabling the big lookup lock.

      3) In the above methods, there is no limit on retries.

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              • Assignee:
                kihwal Kihwal Lee
                Reporter:
                kihwal Kihwal Lee
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                • Created:
                  Updated:
                  Resolved: