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  1. WiredTiger
  2. WT-2092

Segfault race when shutting down in log server

        Details

        • Type: Bug
        • Status: Resolved
        • Priority: Major - P3
        • Resolution: Fixed
        • Affects Version/s: None
        • Fix Version/s: WT2.7.0
        • Labels:
          None
        • # Replies:
          2
        • Last comment by Customer:
          true

          Description

          Jenkins uncovered a race shutting down the log write LSN server, now that it uses the WT_CONNECTION::log_file_cond condition variable.

          Stack traces:

          Thread 2 (Thread 0x7f4daa480740 (LWP 104777)):
          		 
          #0  0x000000317680859d in pthread_join () from /lib64/libpthread.so.0
          		 
          #1  0x0000000000440db5 in __wt_thread_join (session=0x11b9d30, tid=139971485144832)
          		 
              at ../src/os_posix/os_thread.c:37
          		 
          #2  0x00000000004bd282 in __wt_logmgr_destroy (session=0x11b9d30) at ../src/conn/conn_log.c:867
          		 
          #3  0x0000000000417b10 in __wt_connection_close (conn=0x119c260) at ../src/conn/conn_open.c:140
          		 
          #4  0x0000000000410e1b in __conn_close (wt_conn=0x119c260, config=0x0)
          		 
              at ../src/conn/conn_api.c:1004
          		 
          #5  0x000000000040c074 in wts_close () at ../../../test/format/wts.c:446
          		 
          #6  0x0000000000409837 in main (argc=0, argv=0x7ffd8e8f9910) at ../../../test/format/t.c:238
          		 
           
          		 
          Thread 1 (Thread 0x7f4da6a69700 (LWP 106541)):
          		 
          #0  0x000000000043e91a in __wt_cond_signal (session=0x11baf30, cond=0x0)
          		 
              at ../src/os_posix/os_mtx_cond.c:125
          		 
          #1  0x00000000004bc584 in __wt_log_wrlsn (session=0x11baf30) at ../src/conn/conn_log.c:560
          		 
          #2  0x00000000004bc678 in __log_wrlsn_server (arg=0x11baf30) at ../src/conn/conn_log.c:595
          		 
          #3  0x0000003176807555 in start_thread () from /lib64/libpthread.so.0
          		 
          #4  0x0000003176502b9d in clone () from /lib64/libc.so.6

            Issue Links

            is depended on by

            Improvement - An improvement or enhancement to an existing feature or task. SERVER-20060 WiredTiger changes for MongoDB 3.1.8

            • Major - P3 - Major loss of function.
            • Closed

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              xgen-internal-githook Githook User added a comment -

              Author:

              {u'username': u'agorrod', u'name': u'Alex Gorrod', u'email': u'alexg@wiredtiger.com'}

              Message: WT-2092 Free log condition variables after all threads are joined.

              Prevents any possible races when shutting down log utility threads.
              Branch: develop
              https://github.com/wiredtiger/wiredtiger/commit/9549a94a950b02b740d502dfbc51cb17f0271f4e

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              xgen-internal-githook Githook User added a comment - Author: {u'username': u'agorrod', u'name': u'Alex Gorrod', u'email': u'alexg@wiredtiger.com'} Message: WT-2092 Free log condition variables after all threads are joined. Prevents any possible races when shutting down log utility threads. Branch: develop https://github.com/wiredtiger/wiredtiger/commit/9549a94a950b02b740d502dfbc51cb17f0271f4e
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              xgen-internal-githook Githook User added a comment -

              Author:

              {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'}

              Message: Merge pull request #2176 from wiredtiger/log-close-race

              WT-2092 Free log condition variables after all threads are joined.
              Branch: develop
              https://github.com/wiredtiger/wiredtiger/commit/83b8db73e45b819208002ae71b584a89beb21af7

              Show
              xgen-internal-githook Githook User added a comment - Author: {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'} Message: Merge pull request #2176 from wiredtiger/log-close-race WT-2092 Free log condition variables after all threads are joined. Branch: develop https://github.com/wiredtiger/wiredtiger/commit/83b8db73e45b819208002ae71b584a89beb21af7

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                  Dates

                  • Created:
                    Updated:
                    Resolved:
                    Days since reply:
                    1 year, 42 weeks, 1 day ago
                    Date of 1st Reply: