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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[SERVER-56281] Investigate data race between curOp and FTDC in LockStats</title>
                <link>https://jira.mongodb.org/browse/SERVER-56281</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;From linked ticket:&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;j1&amp;#93;&lt;/span&gt; WARNING: ThreadSanitizer: data race (pid=12709)&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]   Write of size 8 at 0x7b6c0007fec8 by thread T12:&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #0 mongo::CounterOps::add(long&amp;amp;, long) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_stats.h:62:17 (mongod+0x3914e64)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #1 mongo::LockStats&amp;lt;long&amp;gt;::recordAcquisition(mongo::ResourceId, mongo::LockMode) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_stats.h:128 (mongod+0x3914e64)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #2 mongo::LockerImpl::_lockBegin(mongo::OperationContext*, mongo::ResourceId, mongo::LockMode) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_state.cpp:855 (mongod+0x3914e64)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #3 mongo::LockerImpl::lock(mongo::OperationContext*, mongo::ResourceId, mongo::LockMode, mongo::Date_t) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_state.cpp:528:31 (mongod+0x391790b)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #4 mongo::Lock::GlobalLock::_takeGlobalAndRSTLLocks(mongo::LockMode, mongo::Date_t) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/d_concurrency.cpp:186:26 (mongod+0x390513f)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #5 mongo::Lock::GlobalLock::GlobalLock(mongo::OperationContext*, mongo::LockMode, mongo::Date_t, mongo::Lock::InterruptBehavior, bool) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/d_concurrency.cpp:167 (mongod+0x390513f)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #6 mongo::ephemeral_for_test::ServerStatusSection::generateSection(mongo::OperationContext*, mongo::BSONElement const&amp;amp;) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/storage/ephemeral_for_test/ephemeral_for_test_server_status.cpp:55:22 (mongod+0x12e9aa0)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #7 mongo::ServerStatusSection::appendSection(mongo::OperationContext*, mongo::BSONElement const&amp;amp;, mongo::BSONObjBuilder*) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands/server_status.h:100:26 (mongod+0x12cd83b)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #8 mongo::CmdServerStatus::run(mongo::OperationContext*, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::BSONObj const&amp;amp;, mongo::BSONObjBuilder&amp;amp;) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands/server_status.cpp:127:22 (mongod+0x379f6b5)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #9 mongo::BasicCommand::runWithReplyBuilder(mongo::OperationContext*, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::BSONObj const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands.h:939:16 (mongod+0x136751c)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #10 mongo::BasicCommandWithReplyBuilderInterface::Invocation::run(mongo::OperationContext*, mongo::rpc::ReplyBuilderInterface*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands.cpp:852:29 (mongod+0x37c069d)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #11 mongo::CommandHelpers::runCommandDirectly(mongo::OperationContext*, mongo::OpMsgRequest const&amp;amp;) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands.cpp:154:21 (mongod+0x37ac1a7)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #12 mongo::FTDCServerStatusCommandCollector::collect(mongo::OperationContext*, mongo::BSONObjBuilder&amp;amp;) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/ftdc/ftdc_server.cpp:241:23 (mongod+0x196db8b)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #13 mongo::FTDCCollectorCollection::collect(mongo::Client*) /data/mci/bff03bc3ef59ce3b0d49638acf862c0c/src/src/mongo/db/ftdc/collector.cpp:92:20 (mongod+0x19b69c9)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #14 mongo::FTDCController::doLoop() /data/mci/bff03bc3ef59ce3b0d49638acf862c0c/src/src/mongo/db/ftdc/controller.cpp:249:54 (mongod+0x19bbfb4)&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]   Previous read of size 8 at 0x7b6c0007fec8 by thread T9 (mutexes: write M492435077276487480, write M889596492753405736, write M627824626973737032):&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #0 void mongo::LockStatCounters&amp;lt;long&amp;gt;::append&amp;lt;long&amp;gt;(mongo::LockStatCounters&amp;lt;long&amp;gt; const&amp;amp;) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_stats.h:85:48 (mongod+0x391d261)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #1 void mongo::LockStats&amp;lt;long&amp;gt;::append&amp;lt;long&amp;gt;(mongo::LockStats&amp;lt;long&amp;gt; const&amp;amp;) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_stats.h:156 (mongod+0x391d261)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #2 mongo::LockerImpl::getLockerInfo(mongo::Locker::LockerInfo*, boost::optional&amp;lt;mongo::LockStats&amp;lt;long&amp;gt; &amp;gt;) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_state.cpp:710:23 (mongod+0x3918864)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #3 mongo::LockerImpl::getLockerInfo(boost::optional&amp;lt;mongo::LockStats&amp;lt;long&amp;gt; &amp;gt;) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/concurrency/lock_state.cpp:723:5 (mongod+0x3918967)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #4 mongo::CommonMongodProcessInterface::_reportCurrentOpForClient(mongo::OperationContext*, mongo::Client*, mongo::MongoProcessInterface::CurrentOpTruncateMode, mongo::MongoProcessInterface::CurrentOpBacktraceMode) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/process_interface/common_mongod_process_interface.cpp:479:57 (mongod+0x27fd07e)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #5 mongo::CommonProcessInterface::getCurrentOps(boost::intrusive_ptr&amp;lt;mongo::ExpressionContext&amp;gt; const&amp;amp;, mongo::MongoProcessInterface::CurrentOpConnectionsMode, mongo::MongoProcessInterface::CurrentOpSessionsMode, mongo::MongoProcessInterface::CurrentOpUserMode, mongo::MongoProcessInterface::CurrentOpTruncateMode, mongo::MongoProcessInterface::CurrentOpCursorMode, mongo::MongoProcessInterface::CurrentOpBacktraceMode) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/process_interface/common_process_interface.cpp:96:26 (mongod+0x2829baa)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #6 mongo::DocumentSourceCurrentOp::doGetNext() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/document_source_current_op.cpp:114:48 (mongod+0x35654ee)&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #7 mongo::DocumentSource::getNext() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/document_source.h:266:20 (mongod+0x192b1e3)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #8 mongo::DocumentSourceGroup::initialize() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/document_source_group.cpp:546:36 (mongod+0x359f962)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #9 mongo::DocumentSourceGroup::doGetNext() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/document_source_group.cpp:173:43 (mongod+0x359f7b1)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #10 mongo::DocumentSource::getNext() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/document_source.h:266:20 (mongod+0x192b1e3)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #11 mongo::Pipeline::getNext() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/pipeline.cpp:448:40 (mongod+0x367ca60)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #12 mongo::PlanExecutorPipeline::_getNext() /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/plan_executor_pipeline.cpp:119:31 (mongod+0x2dad7ad)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #13 mongo::PlanExecutorPipeline::getNextDocument(mongo::Document*, mongo::RecordId*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/plan_executor_pipeline.cpp:101:21 (mongod+0x2dad2ba)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #14 mongo::PlanExecutorPipeline::getNext(mongo::BSONObj*, mongo::RecordId*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/pipeline/plan_executor_pipeline.cpp:81 (mongod+0x2dad2ba)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #15 mongo::(anonymous namespace)::handleCursorCommand(mongo::OperationContext*, boost::intrusive_ptr&amp;lt;mongo::ExpressionContext&amp;gt;, mongo::NamespaceString const&amp;amp;, std::vector&amp;lt;mongo::ClientCursor*, std::allocator&amp;lt;mongo::ClientCursor*&amp;gt; &amp;gt;, mongo::AggregateCommand const&amp;amp;, mongo::BSONObj const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands/run_aggregate.cpp:185:27 (mongod+0x266b222)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #16 mongo::runAggregate(mongo::OperationContext*, mongo::NamespaceString const&amp;amp;, mongo::AggregateCommand const&amp;amp;, mongo::LiteParsedPipeline const&amp;amp;, mongo::BSONObj const&amp;amp;, std::vector&amp;lt;mongo::Privilege, std::allocator&amp;lt;mongo::Privilege&amp;gt; &amp;gt; const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands/run_aggregate.cpp:883 (mongod+0x266b222)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #17 mongo::runAggregate(mongo::OperationContext*, mongo::NamespaceString const&amp;amp;, mongo::AggregateCommand const&amp;amp;, mongo::BSONObj const&amp;amp;, std::vector&amp;lt;mongo::Privilege, std::allocator&amp;lt;mongo::Privilege&amp;gt; &amp;gt; const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands/run_aggregate.cpp:543:12 (mongod+0x266624c)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[j1]     #18 mongo::CurrentOpCommand::runAggregation(mongo::OperationContext*, mongo::AggregateCommand const&amp;amp;) const /data/mci/2c4620ccdb5f3dab379b45edc08d4983/src/src/mongo/db/commands/current_op.cpp:80:23 (mongod+0x25f8ac2)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
</description>
                <environment></environment>
        <key id="1687486">SERVER-56281</key>
            <summary>Investigate data race between curOp and FTDC in LockStats</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Thu, 22 Apr 2021 17:53:30 +0000</created>
                <updated>Fri, 17 Sep 2021 18:24:38 +0000</updated>
                            <resolved>Fri, 30 Jul 2021 12:18:53 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3972457" author="henrik.edin" created="Fri, 30 Jul 2021 12:18:37 +0000"  >&lt;p&gt;After talking to &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mark.benvenuto&quot; class=&quot;user-hover&quot; rel=&quot;mark.benvenuto&quot;&gt;mark.benvenuto&lt;/a&gt;&#160;FTDC should not hold the client lock. An alternative would be to take in in &lt;tt&gt;ServerStatusSection&lt;/tt&gt; or &lt;tt&gt;CommonMongodProcessInterface&lt;/tt&gt; but we run into the problem of reentrancy and I don&apos;t want to make the locks more complicated for this.&lt;/p&gt;

&lt;p&gt;I think we should leave this as-is, CurOp would return garbage for this variable if this data race is hit. I don&apos;t want to disable TSAN for the locker or everything under FTDC either.&lt;/p&gt;</comment>
                            <comment id="3746764" author="connie.chen" created="Thu, 29 Apr 2021 15:23:41 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=henrik.edin&quot; class=&quot;user-hover&quot; rel=&quot;henrik.edin&quot;&gt;henrik.edin&lt;/a&gt; will check with Security Team to see if they own this&lt;/p&gt;</comment>
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