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    <title>MongoDB Jira</title>
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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-75443] PinnedConnectionTaskExecutor::join needs to wait for all networking to finish</title>
                <link>https://jira.mongodb.org/browse/SERVER-75443</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, PinnedConnectionTaskExecutor::join returns early if the RPC requestQueue is empty. But it&apos;s possible for a request to have been popped from the queue, but for it to still be being worked on. That means it&apos;s possible for threads to be running the continuation in this: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/58a69ba924e2ca557bf1c208fed59fc948107bd0/src/mongo/executor/pinned_connection_task_executor.cpp#L283&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/58a69ba924e2ca557bf1c208fed59fc948107bd0/src/mongo/executor/pinned_connection_task_executor.cpp#L283&lt;/a&gt; getAsync, after join has returned. If join() returning is the only thing preventing PCTE from being destroyed, this means that continuation can read garbage data because it is using &quot;this&quot; after it is freed, and it can cause invariant-failures if the PCTE destructor finds that the PCTE::_mutex is being held by the thread running that continuation.&#160;&lt;/p&gt;

&lt;p&gt;We should ensure that join waits for any in-progress requests to be done before returning. We should also consider joining the scoped task executor, and having that getAsync keep a shared_ptr to &quot;this&quot;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2300952">SERVER-75443</key>
            <summary>PinnedConnectionTaskExecutor::join needs to wait for all networking to finish</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="13201">Fixed</resolution>
                                        <assignee username="george.wangensteen@mongodb.com">George Wangensteen</assignee>
                                    <reporter username="george.wangensteen@mongodb.com">George Wangensteen</reporter>
                        <labels>
                    </labels>
                <created>Wed, 29 Mar 2023 14:45:43 +0000</created>
                <updated>Sun, 29 Oct 2023 21:24:03 +0000</updated>
                            <resolved>Thu, 30 Mar 2023 16:36:50 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                    <fixVersion>6.0.6</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5310715" author="xgen-internal-githook" created="Wed, 29 Mar 2023 22:18:12 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;George Wangensteen&apos;, &apos;email&apos;: &apos;george.wangensteen@mongodb.com&apos;, &apos;username&apos;: &apos;gewa24&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75443&quot; title=&quot;PinnedConnectionTaskExecutor::join needs to wait for all networking to finish&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75443&quot;&gt;&lt;del&gt;SERVER-75443&lt;/del&gt;&lt;/a&gt; PinnedConnectionTaskExecutor::join waits for in-progress requests to finish even if they are already out of the request queue&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f0faf5547f917c2b69959a9c4771b67719d8dbee&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f0faf5547f917c2b69959a9c4771b67719d8dbee&lt;/a&gt;&lt;/p&gt;</comment>
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