Description
test_rs_seeds_connect/reconnect and test_mongos_seeds_connect/reconnect, single and pooled versions, all crash with a backtrace like:
#1 mongoc_stream_failed (stream=0x100210082) at mongo-c-driver/src/mongoc/mongoc-stream.c:83
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#2 mongoc_topology_scanner_ismaster_handler (async_status=MONGOC_ASYNC_CMD_ERROR, ismaster_response=0x0, rtt_msec=1137, data=0x100703fb0, error=0x100800c38) at mongo-c-driver/src/mongoc/mongoc-topology-scanner.c:193
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#3 mongoc_async_cmd_run (acmd=0x100800c00) at mongo-c-driver/src/mongoc/mongoc-async-cmd.c:113
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#4 mongoc_async_run (async=0x100702740, timeout_msec=29999) at mongo-c-driver/src/mongoc/mongoc-async.c:142
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#5 mongoc_topology_scanner_work (ts=0x100703b90, timeout_msec=30000) at mongo-c-driver/src/mongoc/mongoc-topology-scanner.c:452
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#6 _mongoc_topology_run_scanner (topology=0x100702c20, work_msec=30000) at mongo-c-driver/src/mongoc/mongoc-topology.c:323
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#7 _mongoc_topology_do_blocking_scan (topology=0x100702c20) at mongo-c-driver/src/mongoc/mongoc-topology.c:349
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#8 mongoc_topology_select (topology=0x100702c20, optype=MONGOC_SS_READ, read_prefs=0x1007069d0, local_threshold_ms=15, error=0x102808230) at mongo-c-driver/src/mongoc/mongoc-topology.c:397
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#9 _mongoc_cluster_select_by_optype (cluster=0x1007047e8, optype=MONGOC_SS_READ, read_prefs=0x1007069d0, error=0x102808230) at mongo-c-driver/src/mongoc/mongoc-cluster.c:1454
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#10 mongoc_cluster_select (cluster=0x1007047e8, rpcs=0x7fff5fbfe540, rpcs_len=1, read_prefs=0x1007069d0, error=0x102808230) at mongo-c-driver/src/mongoc/mongoc-cluster.c:1623
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#11 mongoc_cluster_sendv (cluster=0x1007047e8, rpcs=0x7fff5fbfe540, rpcs_len=1, write_concern=0x1007056d0, read_prefs=0x1007069d0, error=0x102808230) at mongo-c-driver/src/mongoc/mongoc-cluster.c:2309
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#12 _mongoc_client_sendv (client=0x1007047d0, rpcs=0x7fff5fbfe540, rpcs_len=1, server_id=0, write_concern=0x0, read_prefs=0x1007069d0, error=0x102808230) at mongo-c-driver/src/mongoc/mongoc-client.c:448
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#13 _mongoc_cursor_query (cursor=0x102808000) at mongo-c-driver/src/mongoc/mongoc-cursor.c:500
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#14 _mongoc_cursor_next (cursor=0x102808000, bson=0x7fff5fbfe658) at mongo-c-driver/src/mongoc/mongoc-cursor.c:819
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#15 mongoc_cursor_next (cursor=0x102808000, bson=0x7fff5fbfe658) at mongo-c-driver/src/mongoc/mongoc-cursor.c:747
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#16 _mongoc_client_command_simple_with_hint (client=0x1007047d0, db_name=0x10009754f "test", command=0x100706950, read_prefs=0x100706850, reply=0x7fff5fbfeb00, hint=0, error=0x7fff5fbfe900) at mongo-c-driver/src/mongoc/mongoc-client.c:1257
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#17 mongoc_client_command_simple (client=0x1007047d0, db_name=0x10009754f "test", command=0x100706950, read_prefs=0x100706850, reply=0x7fff5fbfeb00, error=0x7fff5fbfe900) at mongo-c-driver/src/mongoc/mongoc-client.c:1231
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#18 test_seed_list (rs=true, connection_option=CONNECT, pooled=false) at mongo-c-driver/tests/test-mongoc-client.c:639
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#19 test_rs_seeds_connect_single () at mongo-c-driver/tests/test-mongoc-client.c:725
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#20 TestSuite_AddHelper (cb_=0x10001d070 <test_rs_seeds_connect_single>) at mongo-c-driver/tests/TestSuite.c:301
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#21 TestSuite_RunTest (suite=0x7fff5fbff530, test=0x1005065d0, mutex=0x7fff5fbff4a8, count=0x7fff5fbff404) at mongo-c-driver/tests/TestSuite.c:429
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#22 TestSuite_RunNamed (suite=0x7fff5fbff530, testname=0x100505770 "/Client/*") at mongo-c-driver/tests/TestSuite.c:741
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#23 TestSuite_Run (suite=0x7fff5fbff530) at mongo-c-driver/tests/TestSuite.c:769
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#24 main (argc=5, argv=0x7fff5fbff590) at mongo-c-driver/tests/test-libmongoc.c:931
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When the server hangs up on an ismaster call, it seems that mongoc_stream_failed is called with a stream that's uninitialized or already destroyed.