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  1. Core Server
  2. SERVER-49432

Avoid read-after-delete in ServiceExecutorSync shutdown

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 4.4.1, 4.7.0
    • Internal Code
    • None
    • Fully Compatible
    • ALL
    • v4.4, v4.2, v4.0
    • Service Arch 2020-07-27
    • 0

    Description

      The shutdown procedure of ServiceExecutorSynchronous uses two variables to communicate with executor threads: a condition variable and an atomic word.

      It is possible for the last executor thread to access the condition variable after it's destroyed, which could result in a read-after-delete failure. To prevent such failures, we should extend the lifetime of all resources (e.g., the condition variable) shared between the ServiceExecutor and the executor threads.

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            amirsaman.memaripour@mongodb.com Amirsaman Memaripour
            amirsaman.memaripour@mongodb.com Amirsaman Memaripour
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            Dates

              Created:
              Updated:
              Resolved: