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  1. WiredTiger
  2. WT-1937

clear hazard pointer: 0x7fba540d3ba0: not found

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT2.6.0
    • Labels:
      None

      Description

      The following CONFIG file occasionally fails (on the order of 20,000 runs on bengal, I've never seen it anywhere else).

      ############################################
      #  RUN PARAMETERS
      ############################################
      abort=0
      auto_throttle=1
      firstfit=0
      bitcnt=2
      bloom=1
      bloom_bit_count=40
      bloom_hash_count=24
      bloom_oldest=0
      cache=60
      checkpoints=1
      checksum=uncompressed
      chunk_size=7
      compaction=0
      compression=lz4
      data_extend=0
      data_source=file
      delete_pct=25
      dictionary=0
      evict_max=4
      file_type=variable-length column-store
      backups=0
      huffman_key=0
      huffman_value=0
      insert_pct=34
      internal_key_truncation=1
      internal_page_max=13
      isolation=read-committed
      key_gap=17
      key_max=76
      key_min=32
      leak_memory=0
      leaf_page_max=10
      logging=0
      logging_archive=1
      logging_prealloc=1
      lsm_worker_threads=4
      merge_max=17
      mmap=1
      ops=100000
      prefix_compression=1
      prefix_compression_min=5
      repeat_data_pct=65
      reverse=0
      rows=100000
      runs=10000
      split_pct=48
      statistics=0
      statistics_server=0
      threads=31
      timer=20
      value_max=1916
      value_min=4
      wiredtiger_config=
      write_pct=72
      ############################################
      

      Here's the stack:

      (gdb) where
      #0  0x0000003467632925 in raise () from /lib64/libc.so.6
      #1  0x0000003467634105 in abort () from /lib64/libc.so.6
      #2  0x00000000004e58db in __wt_abort (session=0x17f4fb0)
          at src/os_posix/os_abort.c:25
      #3  0x000000000047104c in __wt_panic (session=0x17f4fb0)
          at src/support/err.c:492
      #4  0x0000000000472632 in __wt_hazard_clear (session=0x17f4fb0, 
          page=0x7fba540d3ba0) at src/support/hazard.c:178
      #5  0x00000000004feef1 in __wt_page_release_evict (session=0x17f4fb0, 
          ref=0x7fba54103dc0) at ./src/include/btree.i:1139
      #6  0x00000000004ff14a in __wt_page_release (session=0x17f4fb0, 
          ref=0x7fba54103dc0, flags=0) at ./src/include/btree.i:1212
      #7  0x00000000004ff703 in __curfile_leave (cbt=0x7fba3803adb0)
          at ./src/include/cursor.i:132
      #8  0x00000000004ff7dc in __cursor_reset (cbt=0x7fba3803adb0)
          at ./src/include/cursor.i:208
      #9  0x00000000005009f1 in __wt_btcur_insert (cbt=0x7fba3803adb0)
          at src/btree/bt_cursor.c:558
      #10 0x00000000004c4e29 in __curfile_insert (cursor=0x7fba3803adb0)
          at src/cursor/cur_file.c:245
      #11 0x00000000004122f5 in col_insert (tinfo=0x18467e0, cursor=0x7fba3803adb0, 
          key=0x7fba64e99df0, value=0x7fba64e99dc0, keynop=0x7fba64e99db8)
          at ops.c:1065
      

      In summary, we have a non-NULL cbt->ref, but we're not holding a hazard reference on it.

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              • Assignee:
                keith.bostic Keith Bostic
                Reporter:
                keith.bostic Keith Bostic
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                • Created:
                  Updated:
                  Resolved: