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  1. Core Server
  2. SERVER-39490

opWriteConcernCounters can cause undefined behavior due to overflow

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 3.6.11, 4.0.6, 4.1.7
    • 3.6.12, 4.0.7, 4.1.9
    • Replication
    • None
    • Fully Compatible
    • ALL
    • v4.0, v3.6
    • Repl 2019-03-11

    Description

      The counters in ServerWriteConcernMetrics can overflow, since they are signed integers, and they are not protected by std::atomic. We should make these counters unsigned (preferably std::uint64_t). In order to append them to a BSONObj here, we can cast them to long long.

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            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
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              Updated:
              Resolved: