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  1. Core Server
  2. SERVER-11297

Running a query with CursorTailable flag against non-existent collection crashes mongod.

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 2.5.4
    • Affects Version/s: 2.5.4
    • Component/s: None
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      1. Start mongod on fresh data directory 
        $ ./mongod
      2. Run the following from the shell, assuming test.foo is a non-existent collection: 
        db.foo.find({}).addOption(2)

      Expected behavior:
      Shell should get back a cursor with no documents, or some kind of error message.

      Actual behavior:
      Stack trace and seg fault from mongod. See description.

      Show
      Start mongod on fresh data directory $ ./mongod Run the following from the shell, assuming test.foo is a non-existent collection: db.foo.find({}).addOption(2) Expected behavior: Shell should get back a cursor with no documents, or some kind of error message. Actual behavior: Stack trace and seg fault from mongod. See description.
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      Running under mongod, we see that somehow "this" is NULL at collection.cpp:180.

      $ addr2line -i -e mongod 0xe21c33 0x79479f 0x794bc5 0x7f23b05e4cb0 0xca1ed0 0xbaad76 0xb026bc 0xa548d3 0x79ec12 0xde54bd 0x7f23b05dce9a 0x7f23af4bdccd 
/data/rbuild/mongo/src/mongo/util/stacktrace.cpp:304
/usr/include/c++/4.6/sstream:458
/data/rbuild/mongo/src/mongo/db/db.cpp:1011
/usr/include/c++/4.6/sstream:439
/data/rbuild/mongo/src/mongo/db/db.cpp:1028
??:0
/data/rbuild/mongo/src/mongo/db/structure/collection.cpp:180
/data/rbuild/mongo/src/mongo/db/query/new_find.cpp:717
/data/rbuild/mongo/src/mongo/db/ops/query.cpp:1105
/data/rbuild/mongo/src/mongo/db/instance.cpp:280
/data/rbuild/mongo/src/mongo/db/instance.cpp:443
/data/rbuild/mongo/src/mongo/util/net/hostandport.h:31
/data/rbuild/mongo/src/mongo/db/db.cpp:199
/data/rbuild/mongo/src/mongo/util/net/message_server_port.cpp:251
??:0
??:0

            Assignee:
            eliot Eliot Horowitz (Inactive)
            Reporter:
            schwerin@mongodb.com Andy Schwerin
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            Watchers:
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              Created:
              Updated:
              Resolved: