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    <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>
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<item>
            <title>[SERVER-6481] Invalid write to a deleted ClientCursor after yield recovery fails</title>
                <link>https://jira.mongodb.org/browse/SERVER-6481</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There are a couple of places doing something like the following:&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;                bool res = yield( suggestYieldMicros() , rec );&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;                _yieldSometimesTracker.resetLastTime();&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;   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;                return res;&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;If res if false, the &apos;this&apos; pointer will have been deleted so calling _yieldSometimesTracker.resetLastTime() causes a write to invalid memory.  I believe the resulting memory corruption causes &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6480&quot; title=&quot;Seg fault in count8.js&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6480&quot;&gt;&lt;del&gt;SERVER-6480&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="44348">SERVER-6481</key>
            <summary>Invalid write to a deleted ClientCursor after yield recovery fails</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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="aaron">Aaron Staple</reporter>
                        <labels>
                    </labels>
                <created>Tue, 17 Jul 2012 05:09:59 +0000</created>
                <updated>Mon, 11 Jul 2016 17:57:24 +0000</updated>
                            <resolved>Tue, 17 Jul 2012 05:28:21 +0000</resolved>
                                                    <fixVersion>2.2.0-rc0</fixVersion>
                                    <component>Stability</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="143570" author="aaron" created="Tue, 17 Jul 2012 05:33:28 +0000"  >&lt;p&gt;@eliot - looks good&lt;br/&gt;
Will try to consolidate bb diagnosis reporting in future&lt;/p&gt;</comment>
                            <comment id="143569" author="eliot" created="Tue, 17 Jul 2012 05:28:21 +0000"  >&lt;p&gt;@aaron - can you take a quick look at commit&lt;/p&gt;</comment>
                            <comment id="143566" author="auto" created="Tue, 17 Jul 2012 05:28:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-07-16T22:27:32-07:00&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6481&quot; title=&quot;Invalid write to a deleted ClientCursor after yield recovery fails&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6481&quot;&gt;&lt;del&gt;SERVER-6481&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6480&quot; title=&quot;Seg fault in count8.js&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6480&quot;&gt;&lt;del&gt;SERVER-6480&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6479&quot; title=&quot;Seg fault in explain3.js&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6479&quot;&gt;&lt;del&gt;SERVER-6479&lt;/del&gt;&lt;/a&gt; - if after yield returns, we&apos;ve been deleted, don&apos;t update timer&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d13d99850ea083decb00bd20a56abb5c8f3a05fe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d13d99850ea083decb00bd20a56abb5c8f3a05fe&lt;/a&gt;&lt;/p&gt;</comment>
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