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  1. Core Server
  2. SERVER-46217

Unit tests consistently segfault after SERVER-45793

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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Major - P3 Major - P3
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    • Affects Version/s: None
    • Component/s: Build
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    • Service Arch 2020-03-09

      From commit f363c7a5f2 onwards, many (most?) unit tests have been consistently producing segfaults after the tests themselves have finished running, regardless of whether they fail or succeed. This has been observed both by myself on my Ubuntu 19.04 workstation, and by another member of my team on his Ubuntu 19.10 workstation. We are both building with --link-model=dynamic --opt=off.

      Some examples below:

      (mongo-python3) bernard@SEELE:~/mongo$ build/ninja/mongo/s/client/mongos_client_local_test
2020-02-18T11:26:24.250+0000 I  -        [main] going to run suite: ShardLocalTest
2020-02-18T11:26:24.251+0000 I  -        [main] 	 going to run test: RunCommand
...
2020-02-18T11:26:24.307+0000 I  -        [main] SUCCESS - All tests in all suites passed
Segmentation fault (core dumped)

      (mongo-python3) bernard@SEELE:~/mongo$ ninja -f build-mongo.ninja +document_source_change_stream_test
[1/1 (100%) 5.025s] build/ninja/mongo/db/pipeline/db_pipeline_test -fileNameFilter document_source_change_stream_test
FAILED: +document_source_change_stream_test
build/ninja/mongo/db/pipeline/db_pipeline_test -fileNameFilter document_source_change_stream_test
2020-02-18T11:27:41.675+0000 I  -        [main] going to run suite: AccumulatorMergeObjects
2020-02-18T11:27:41.675+0000 I  -        [main] 	 DONE running tests
...
2020-02-18T11:27:43.228+0000 I  -        [main] SUCCESS - All tests in all suites passed
Segmentation fault (core dumped)
ninja: build stopped: subcommand failed.

      (mongo-python3) bernard@SEELE:~/mongo$ build/ninja/mongo/s/catalog/s_catalog_test
...
2020-02-18T11:30:23.887+0000 I  -        [main] DistLockCatalogTest                      | tests:   78 | fails:    0 | assert calls:          0 | time secs:  0.706
2020-02-18T11:30:23.887+0000 I  -        [main] InsertRetryTest                          | tests:    6 | fails:    0 | assert calls:          0 | time secs:  0.058
2020-02-18T11:30:23.887+0000 I  -        [main] RSDistLockMgrWithMockTickSource          | tests:    4 | fails:    0 | assert calls:          0 | time secs:  0.104
2020-02-18T11:30:23.887+0000 I  -        [main] ReplSetDistLockManagerFixture            | tests:   28 | fails:    0 | assert calls:          0 | time secs:  0.259
2020-02-18T11:30:23.887+0000 I  -        [main] ShardingCatalogClientTest                | tests:   36 | fails:    0 | assert calls:          0 | time secs:  0.196
2020-02-18T11:30:23.887+0000 I  -        [main] UpdateRetryTest                          | tests:    6 | fails:    0 | assert calls:          0 | time secs:  0.031
2020-02-18T11:30:23.887+0000 I  -        [main] TOTALS                                   | tests:  158 | fails:    0 | assert calls:          0 | time secs:  1.354
2020-02-18T11:30:23.887+0000 I  -        [main] SUCCESS - All tests in all suites passed
Segmentation fault (core dumped)

            Assignee:
            ben.caimano@mongodb.com Benjamin Caimano (Inactive)
            Reporter:
            bernard.gorman@mongodb.com Bernard Gorman
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              Created:
              Updated:
              Resolved: