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  1. Core Server
  2. SERVER-10331

Mongodb SEGFAULTS with a null pointer

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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Blocker - P1 Blocker - P1
    • None
    • Affects Version/s: 2.2.3
    • Component/s: Concurrency, Stability
    • Environment:
      Centos 6.2, pymongo-2.1.1-1, pulp-2.1.3-1
    • Fully Compatible
    • Linux
    • Hide
      1. service mongod status
        mongod dead but pid file exists
      2. service mongod restart
        Stopping mongod: [FAILED]
        Starting mongod: [ OK ]
      3. service mongod status
        mongod (pid 30930) is running...
      4. pulp-manage-db
        Beginning database migrations.
        Migration package pulp.server.db.migrations is up to date at version 4
        Migration package pulp_rpm.migrations is up to date at version 7
        Database migrations complete.
        Loading content types.
        Content types loaded.
      5. service httpd restart
        Stopping httpd: [ OK ]
        Starting httpd: [ OK ]
      6. service mongod status
        mongod dead but pid file exists

      -------------------------------------
      Method 2)

      1. mongo pulp_database < echo "db.queued_calls.drop();"
        MongoDB shell version: 2.2.3
        connecting to: pulp_database
        false
        Wed Jul 24 10:25:24 mongo got signal 11 (Segmentation fault), stack trace:

      Wed Jul 24 10:25:24 0x59e416 0x47adbd 0x3a41032900
      mongo(_ZN5mongo15printStackTraceERSo+0x26) [0x59e416]
      mongo(_Z12quitAbruptlyi+0x31d) [0x47adbd]
      /lib64/libc.so.6() [0x3a41032900]

      Show
      service mongod status mongod dead but pid file exists service mongod restart Stopping mongod: [FAILED] Starting mongod: [ OK ] service mongod status mongod (pid 30930) is running... pulp-manage-db Beginning database migrations. Migration package pulp.server.db.migrations is up to date at version 4 Migration package pulp_rpm.migrations is up to date at version 7 Database migrations complete. Loading content types. Content types loaded. service httpd restart Stopping httpd: [ OK ] Starting httpd: [ OK ] service mongod status mongod dead but pid file exists ------------------------------------- Method 2) mongo pulp_database < echo "db.queued_calls.drop();" MongoDB shell version: 2.2.3 connecting to: pulp_database false Wed Jul 24 10:25:24 mongo got signal 11 (Segmentation fault), stack trace: Wed Jul 24 10:25:24 0x59e416 0x47adbd 0x3a41032900 mongo(_ZN5mongo15printStackTraceERSo+0x26) [0x59e416] mongo(_Z12quitAbruptlyi+0x31d) [0x47adbd] /lib64/libc.so.6() [0x3a41032900]

      I am trying to use pulp, which a program that manages package repositories, and uses mongodb as a backend. However, it has been causing mongodb to segfault. https://bugzilla.redhat.com/show_bug.cgi?id=986070 http://pastebin.com/VgfHZj0q (the file being piped in just contains "db.queued_calls.drop();" ). The second link in particular seems to point the finger at mongo.

      Pulp has a db purging call queued, and on its startup it segfaults mongodb, which itself complains about a null pointer, and what appears to a threading problem (as soon as anything thread but the first does anything it gets said null pointer)

        1. mongodb.log.2013-07-24T15-22-37
          14 kB

            Assignee:
            michael.grundy Michael Grundy
            Reporter:
            jgreenleaf Jim
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              Created:
              Updated:
              Resolved: