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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-33382] GlobalCursorIdCache::timeoutCursors() sometimes sees a view, resulting in a crash</title>
                <link>https://jira.mongodb.org/browse/SERVER-33382</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When the CursorIdCache::timeoutCursors() iterates over its cursors, it locks them using an &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0628b8ee3ce53f7263393ed2112ef79d6b32bcba/src/mongo/db/cursor_manager.cpp#L265&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;AutoGetCollectionForReadCommand title&lt;/a&gt; that will uassert when locking a view.&lt;/p&gt;

&lt;p&gt;There should not be a view among the cursors managed by CursorIdCache, but timeoutCursors() does not hold the lock while it iterates, so there is a window of time during which a collection can be dropped and replaced by a view with the same name. Because the uassert occurs as part of the cursor cleanup background job, it crashes the server.&lt;/p&gt;</description>
                <environment></environment>
        <key id="499320">SERVER-33382</key>
            <summary>GlobalCursorIdCache::timeoutCursors() sometimes sees a view, resulting in a crash</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="justin.seyster@mongodb.com">Justin Seyster</assignee>
                                    <reporter username="justin.seyster@mongodb.com">Justin Seyster</reporter>
                        <labels>
                    </labels>
                <created>Fri, 16 Feb 2018 23:32:40 +0000</created>
                <updated>Sun, 29 Oct 2023 22:34:36 +0000</updated>
                            <resolved>Tue, 20 Feb 2018 20:33:16 +0000</resolved>
                                                    <fixVersion>3.7.3</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1810835" author="xgen-internal-githook" created="Tue, 20 Feb 2018 20:32:29 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;justin.seyster@mongodb.com&apos;, &apos;name&apos;: &apos;Justin Seyster&apos;, &apos;username&apos;: &apos;jseyster&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33382&quot; title=&quot;GlobalCursorIdCache::timeoutCursors() sometimes sees a view, resulting in a crash&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33382&quot;&gt;&lt;del&gt;SERVER-33382&lt;/del&gt;&lt;/a&gt; Permit views in GlobalCursorIdCache::timeoutCursors().&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d01dc284473c0b91513d0200f4b1b5aa682c08e6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d01dc284473c0b91513d0200f4b1b5aa682c08e6&lt;/a&gt;&lt;/p&gt;</comment>
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