Running applyOps with an op on a nonexistent database using mmapv1 will crash mongod

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    • Type: Bug
    • Resolution: Done
    • Priority: Major - P3
    • 3.4.1, 3.5.1
    • Affects Version/s: 3.3.8
    • Component/s: Storage
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    • Fully Compatible
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      Start mongod with mmapv1. Ensure p11 database does not exist.

      db.runCommand({applyOps: [{op:"i", ns: "p11.dbref4", o:{_id:5, x:17}}]})
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      Start mongod with mmapv1. Ensure p11 database does not exist. db.runCommand({applyOps: [{op:"i", ns: "p11.dbref4", o:{_id:5, x:17}}]})
    • Storage 2016-12-12
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      See repro steps.

      This crashes because we attempt to construct an OldClientContext while in an active WriteUnitOfWork.
      OldClientContext will attempt to create a database if it doesn't exist.
      Creating a database on mmapv1 will attempt to allocate a new ns file, and then try to flush the journal manually.
      Flushing the journal requires the flush lock, which invariants that we are not in a WriteUnitOfWork.

            Assignee:
            Eric Milkie
            Reporter:
            Eric Milkie
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              Created:
              Updated:
              Resolved: