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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-28860] Coverity analysis defect 100781: Thread deadlock</title>
                <link>https://jira.mongodb.org/browse/SERVER-28860</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Threads may try to acquire two locks in different orders, potentially causing deadlock&lt;/p&gt;

&lt;p&gt;Defect 100781 (STATIC_C)&lt;br/&gt;
  Checker ORDER_REVERSAL (subcategory none)&lt;br/&gt;
  File:  &lt;tt&gt;/src/mongo/db/repl/database_cloner.cpp&lt;/tt&gt;&lt;br/&gt;
  Function &lt;tt&gt;mongo::repl::DatabaseCloner::_collectionClonerCallback(const mongo::Status &amp;amp;, const mongo::NamespaceString &amp;amp;)&lt;/tt&gt;&lt;/p&gt;
</description>
                <environment></environment>
        <key id="375447">SERVER-28860</key>
            <summary>Coverity analysis defect 100781: Thread deadlock</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="13202">Works as Designed</resolution>
                                        <assignee username="william.schultz@mongodb.com">William Schultz</assignee>
                                    <reporter username="xgen-internal-coverity">Coverity Collector User</reporter>
                        <labels>
                            <label>coverity</label>
                    </labels>
                <created>Wed, 19 Apr 2017 14:43:23 +0000</created>
                <updated>Fri, 27 Oct 2023 13:54:30 +0000</updated>
                            <resolved>Wed, 19 Jul 2017 17:32:21 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1615363" author="william.schultz" created="Thu, 6 Jul 2017 16:26:43 +0000"  >&lt;p&gt;The Coverity analysis claims that we recursively acquire the &lt;tt&gt;DatabaseCloner::_mutex&lt;/tt&gt; in &lt;tt&gt;DatabaseCloner::_collectionClonerCallback&lt;/tt&gt; when we call &lt;tt&gt;DatabaseCloner::_finishCallback_inlock&lt;/tt&gt; which calls &lt;tt&gt;DatabaseCloner::_finishCallback_inlock&lt;/tt&gt;. However, &lt;tt&gt;DatabaseCloner::_finishCallback_inlock&lt;/tt&gt; always unlocks the lock first if necessary, avoiding this scenario.&lt;/p&gt;</comment>
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            <issuekey id="375449">SERVER-28862</issuekey>
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