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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-65473] Fix another location of memory tracking underflow</title>
                <link>https://jira.mongodb.org/browse/SERVER-65473</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Memory tracking underflow can also happen here:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/e7544180078415f6dd6bce44b90033f2599abf52/src/mongo/db/pipeline/memory_usage_tracker.h#L157&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/e7544180078415f6dd6bce44b90033f2599abf52/src/mongo/db/pipeline/memory_usage_tracker.h#L157&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Previously this place is patched to prevent the underflow from happening:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/e7544180078415f6dd6bce44b90033f2599abf52/src/mongo/db/pipeline/memory_usage_tracker.h#L54&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/e7544180078415f6dd6bce44b90033f2599abf52/src/mongo/db/pipeline/memory_usage_tracker.h#L54&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The same fix should be applied to the first location as well.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2023020">SERVER-65473</key>
            <summary>Fix another location of memory tracking underflow</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="rushan.chen@mongodb.com">Rushan Chen</assignee>
                                    <reporter username="rushan.chen@mongodb.com">Rushan Chen</reporter>
                        <labels>
                    </labels>
                <created>Tue, 12 Apr 2022 11:58:49 +0000</created>
                <updated>Sun, 29 Oct 2023 21:39:38 +0000</updated>
                            <resolved>Wed, 4 May 2022 09:06:05 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4523477" author="xgen-internal-githook" created="Tue, 3 May 2022 18:47:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Rushan Chen&apos;, &apos;email&apos;: &apos;rushan.chen@mongodb.com&apos;, &apos;username&apos;: &apos;ruchen&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65473&quot; title=&quot;Fix another location of memory tracking underflow&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65473&quot;&gt;&lt;del&gt;SERVER-65473&lt;/del&gt;&lt;/a&gt; stop underflow assert in global memory tracker&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a703f5048141ff87446cfdce9b127bfa2914e5a9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a703f5048141ff87446cfdce9b127bfa2914e5a9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4479822" author="JIRAUSER1259232" created="Wed, 13 Apr 2022 12:44:08 +0000"  >&lt;p&gt;This BF is caused by the same underpinning issue of inaccurate memory tracking. Memory tracking itself is hard to track to uncover where the inaccuracy takes place. So to avoid any tripwire assert (and query failure), for the current master (6.0) and 5.3 versions, the same fix as in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62283&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;SERVER-62283&lt;/a&gt; is adopted.&lt;/p&gt;

&lt;p&gt;Note that there has been no report of BFs for master and 5.3. But the tripwire assert issue can be reproduced by running the following command (test file is attached):&lt;/p&gt;

&lt;p&gt;./buildscripts/resmoke.py run --suites=generational_fuzzer&#160; agg_fuzzer-fbdb-1646788855977-2.js &#160; &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/372964/372964_agg_fuzzer-fbdb-1646788855977-2.js&quot; title=&quot;agg_fuzzer-fbdb-1646788855977-2.js attached to SERVER-65473&quot;&gt;agg_fuzzer-fbdb-1646788855977-2.js&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="1956677">SERVER-62283</issuekey>
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            <issuelink>
            <issuekey id="1919133">SERVER-61281</issuekey>
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                            <attachment id="372964" name="agg_fuzzer-fbdb-1646788855977-2.js" size="2012760" author="rushan.chen@mongodb.com" created="Wed, 13 Apr 2022 12:43:52 +0000"/>
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