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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-76652] createRandomCursorExecutor holds the CSSLock while potentially executing a TrialStage</title>
                <link>https://jira.mongodb.org/browse/SERVER-76652</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;PipelineD::createRandomCursorExecutor &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d6dc8100f872fc46a394dddf40e856ac5ec2eca/src/mongo/db/pipeline/pipeline_d.cpp#L568&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;takes a ScopedCollectionShardingState&lt;/a&gt;, which holds the CSS RESOURCE_MUTEX, and still holds it &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d6dc8100f872fc46a394dddf40e856ac5ec2eca/src/mongo/db/pipeline/pipeline_d.cpp#L708-L713&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;when it constructs the PlanExecutor&lt;/a&gt;. The PlanExecutor constructor may actually &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d6dc8100f872fc46a394dddf40e856ac5ec2eca/src/mongo/db/query/plan_executor_impl.cpp#L178&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;execute a TrialStage&lt;/a&gt;, during which it can yield/restore the locks. RESOURCE_MUTEXes are not yielded, so on restore a lock inversion can happen.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2327068">SERVER-76652</key>
            <summary>createRandomCursorExecutor holds the CSSLock while potentially executing a TrialStage</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="jordi.serra-torrens@mongodb.com">Jordi Serra Torrens</assignee>
                                    <reporter username="jordi.serra-torrens@mongodb.com">Jordi Serra Torrens</reporter>
                        <labels>
                    </labels>
                <created>Fri, 28 Apr 2023 12:33:11 +0000</created>
                <updated>Sun, 29 Oct 2023 21:22:20 +0000</updated>
                            <resolved>Sat, 29 Apr 2023 09:10:53 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.0-rc1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5393170" author="xgen-internal-githook" created="Tue, 2 May 2023 08:34:24 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Serra Torrens&apos;, &apos;email&apos;: &apos;jordi.serra-torrens@mongodb.com&apos;, &apos;username&apos;: &apos;jordist&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76652&quot; title=&quot;createRandomCursorExecutor holds the CSSLock while potentially executing a TrialStage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76652&quot;&gt;&lt;del&gt;SERVER-76652&lt;/del&gt;&lt;/a&gt; Do not hold CSSLock when constructing PlanExecutor on createRandomCursorExecutor&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 1ef91934ee3d8ae22b3b8b51d21a7182b83c13ac)&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8cbf0ec019ee2972df1998d686b88df21039b1fd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8cbf0ec019ee2972df1998d686b88df21039b1fd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5385474" author="xgen-internal-githook" created="Fri, 28 Apr 2023 17:16:35 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Serra Torrens&apos;, &apos;email&apos;: &apos;jordi.serra-torrens@mongodb.com&apos;, &apos;username&apos;: &apos;jordist&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76652&quot; title=&quot;createRandomCursorExecutor holds the CSSLock while potentially executing a TrialStage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76652&quot;&gt;&lt;del&gt;SERVER-76652&lt;/del&gt;&lt;/a&gt; Do not hold CSSLock when constructing PlanExecutor on createRandomCursorExecutor&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1ef91934ee3d8ae22b3b8b51d21a7182b83c13ac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1ef91934ee3d8ae22b3b8b51d21a7182b83c13ac&lt;/a&gt;&lt;/p&gt;</comment>
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