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  1. WiredTiger
  2. WT-5604

heap-use-after-free when updating variable length column-store

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major - P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 4.3 Desired
    • Component/s: None
    • Labels:

      Description

      A heap-use-after-free error was captured by the format stress sanitizer job after merging durable history branch into develop. The error fired while attempting a cursor modify on a variable length column-store.

      http://build.wiredtiger.com:8080/job/wiredtiger-test-format-stress-sanitizer-ppc/9258/

      ==12897==ERROR: AddressSanitizer: heap-use-after-free on address 0x0a38000615c7 at pc 0x0000100dd38c bp 0x3fff7a1fb970 sp 0x3fff7a1fb990
      READ of size 34 at 0x0a38000615c7 thread T6
          #0 0x100dd388 in __asan_memcpy /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:463
          #1 0x101e9fc4 in __wt_update_alloc /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/row_modify.c:273:9
          #2 0x1084f518 in __wt_col_modify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/col_modify.c:187:13
          #3 0x10704758 in __cursor_col_modify_v /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_cursor.c:428:13
          #4 0x106f5330 in __btcur_update /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_cursor.c:1341:15
          #5 0x106f6228 in __wt_btcur_reserve /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_cursor.c:1558:11
          #6 0x102a0fb8 in __curfile_reserve /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/cursor/cur_file.c:446:5
          #7 0x10162a04 in col_reserve /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/ops.c:1329:16
          #8 0x1015b084 in ops /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/ops.c:745:23
          #9 0x1010df9c in __asan::AsanThread::ThreadStart(unsigned long, __sanitizer::atomic_uintptr_t*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_thread.cc:257
          #10 0x1003a778 in asan_thread_start(void*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:305
          #11 0x3fff7fbb8940 in start_thread (/lib64/power8/libpthread.so.0+0x8940)
          #12 0x3fff7f90763c in __clone (/lib64/power8/libc.so.6+0x11763c)
       
      0x0a38000615c7 is located 39 bytes inside of 73-byte region [0x0a38000615a0,0x0a38000615e9)
      freed by thread T4 here:
          #0 0x100f8f7c in __interceptor_cfree.localalias.1 /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:55
          #1 0x103e6734 in __wt_free_int /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/os_common/os_alloc.c:301:5
          #2 0x1071c050 in __wt_free_update_list /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_discard.c:423:9
          #3 0x1071d25c in __free_skip_list /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_discard.c:383:13
          #4 0x1071d74c in __free_skip_array /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_discard.c:363:13
          #5 0x10719d38 in __free_page_modify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_discard.c:186:13
          #6 0x10717e38 in __wt_page_out /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_discard.c:107:9
          #7 0x10716f00 in __wt_ref_out /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_discard.c:41:5
          #8 0x10323848 in __evict_page_dirty_update /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/evict/evict_page.c:395:13
          #9 0x1031e0f0 in __wt_evict /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/evict/evict_page.c:192:9
          #10 0x102f8a28 in __evict_page /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/evict/evict_lru.c:2231:5
          #11 0x102f01f8 in __evict_lru_pages /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/evict/evict_lru.c:1102:20
          #12 0x102eef64 in __wt_evict_thread_run /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/evict/evict_lru.c:311:9
          #13 0x10584938 in __thread_run /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/support/thread_group.c:31:9
          #14 0x1010df9c in __asan::AsanThread::ThreadStart(unsigned long, __sanitizer::atomic_uintptr_t*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_thread.cc:257
          #15 0x1003a778 in asan_thread_start(void*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:305
          #16 0x3fff7fbb8940 in start_thread (/lib64/power8/libpthread.so.0+0x8940)
          #17 0x3fff7f90763c in __clone (/lib64/power8/libc.so.6+0x11763c)
       
      previously allocated by thread T6 here:
          #0 0x100f93bc in calloc /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:74
          #1 0x103e4954 in __wt_calloc /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/os_common/os_alloc.c:50:14
          #2 0x101e9d74 in __wt_update_alloc /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/row_modify.c:270:5
          #3 0x1084f518 in __wt_col_modify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/col_modify.c:187:13
          #4 0x10704758 in __cursor_col_modify_v /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_cursor.c:428:13
          #5 0x106f4600 in __btcur_update /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_cursor.c:1266:42
          #6 0x106f3660 in __wt_btcur_modify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_cursor.c:1516:15
          #7 0x102a5c64 in __curfile_modify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/cursor/cur_file.c:333:5
          #8 0x10165130 in col_modify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/ops.c:1405:16
          #9 0x1015b750 in ops /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/ops.c:798:23
          #10 0x1010df9c in __asan::AsanThread::ThreadStart(unsigned long, __sanitizer::atomic_uintptr_t*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_thread.cc:257
          #11 0x1003a778 in asan_thread_start(void*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:305
          #12 0x3fff7fbb8940 in start_thread (/lib64/power8/libpthread.so.0+0x8940) 

      Format configuration:

      ############################################
      #  RUN PARAMETERS
      ############################################
      abort=0
      alter=0
      assert_commit_timestamp=0
      assert_read_timestamp=0
      auto_throttle=1
      backups=0
      bitcnt=7
      bloom=1
      bloom_bit_count=42
      bloom_hash_count=9
      bloom_oldest=0
      cache=84
      cache_minimum=20
      checkpoints=on
      checkpoint_log_size=29
      checkpoint_wait=17
      checksum=uncompressed
      chunk_size=6
      compaction=0
      compression=lz4
      data_extend=0
      data_source=table
      delete_pct=2
      dictionary=1
      direct_io=0
      encryption=none
      evict_max=4
      file_type=variable-length column-store
      firstfit=0
      huffman_key=0
      huffman_value=0
      independent_thread_rng=1
      in_memory=0
      insert_pct=2
      internal_key_truncation=1
      internal_page_max=9
      isolation=snapshot
      key_gap=7
      key_max=63
      key_min=25
      leaf_page_max=14
      leak_memory=0
      logging=0
      logging_archive=0
      logging_compression=none
      logging_file_max=312351
      logging_prealloc=0
      lsm_worker_threads=4
      major_timeout=0
      memory_page_max=7
      merge_max=4
      mmap=0
      modify_pct=5
      ops=0
      prefix_compression=1
      prefix_compression_min=6
      prepare=0
      quiet=1
      random_cursor=0
      read_pct=69
      rebalance=1
      repeat_data_pct=80
      reverse=0
      rows=1000000
      runs=1
      salvage=1
      split_pct=85
      statistics=0
      statistics_server=0
      threads=6
      timer=4
      timing_stress_aggressive_sweep=0
      timing_stress_checkpoint=0
      timing_stress_hs_sweep=0
      timing_stress_split_1=0
      timing_stress_split_2=0
      timing_stress_split_3=0
      timing_stress_split_4=0
      timing_stress_split_5=0
      timing_stress_split_6=0
      timing_stress_split_7=0
      timing_stress_split_8=0
      transaction_timestamps=1
      transaction-frequency=100
      truncate=1
      value_max=4070
      value_min=6
      verify=1
      wiredtiger_config=
      write_pct=22
      ############################################ 

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            • Assignee:
              backlog-server-storage-engines Backlog - Storage Engines Team
              Reporter:
              luke.chen Luke Chen
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              • Created:
                Updated: