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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>
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<item>
            <title>[SERVER-34758] replSetGetStatus can deadlock with initialSyncer</title>
                <link>https://jira.mongodb.org/browse/SERVER-34758</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When called with initialSync:1, replSetGetStatus locks the ReplicationCoordinatorImpl mutex, then the InitialSyncer mutex.&#160; The InitialSyncer in the course of normal operation will acquire the same locks in the opposite order.&#160; Result: deadlock.&lt;/p&gt;

&lt;p&gt;I do not think it is necessary to hold the ReplicationCoordinatorImpl mutex while getting the initialSync status, so the fix may be as simple as getting the initialSync status before acquiring the mutex.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="536717">SERVER-34758</key>
            <summary>replSetGetStatus can deadlock with initialSyncer</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="suganthi.mani@mongodb.com">Suganthi Mani</assignee>
                                    <reporter username="matthew.russotto@mongodb.com">Matthew Russotto</reporter>
                        <labels>
                            <label>initialSync</label>
                    </labels>
                <created>Mon, 30 Apr 2018 21:15:02 +0000</created>
                <updated>Sun, 29 Oct 2023 22:32:13 +0000</updated>
                            <resolved>Wed, 13 Jun 2018 19:11:42 +0000</resolved>
                                                    <fixVersion>3.4.16</fixVersion>
                    <fixVersion>3.6.6</fixVersion>
                    <fixVersion>4.0.1</fixVersion>
                    <fixVersion>4.1.1</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1941758" author="xgen-internal-githook" created="Mon, 9 Jul 2018 13:26:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;smani87&apos;, &apos;name&apos;: &apos;Suganthi Mani&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34758&quot; title=&quot;replSetGetStatus can deadlock with initialSyncer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34758&quot;&gt;&lt;del&gt;SERVER-34758&lt;/del&gt;&lt;/a&gt; Fix to prevent deadlock between initial sync and replSetGetStatus cmd when called along with initialSync:1.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 3c6d6969752ad4322594dab171ca7dd26b854bc8)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f70d92c7b617b3b9fe0ecfc808225cb2bcc8bc2d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f70d92c7b617b3b9fe0ecfc808225cb2bcc8bc2d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1922214" author="xgen-internal-githook" created="Fri, 15 Jun 2018 18:59:54 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;smani87&apos;, &apos;name&apos;: &apos;smani87&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34758&quot; title=&quot;replSetGetStatus can deadlock with initialSyncer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34758&quot;&gt;&lt;del&gt;SERVER-34758&lt;/del&gt;&lt;/a&gt; Fix to prevent deadlock between initial sync and replSetGetStatus cmd when called along with initialSync:1.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 3c6d6969752ad4322594dab171ca7dd26b854bc8)&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/26706cb04de995a2d7252da936ba815217239a60&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/26706cb04de995a2d7252da936ba815217239a60&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1922206" author="xgen-internal-githook" created="Fri, 15 Jun 2018 18:55:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;smani87&apos;, &apos;name&apos;: &apos;smani87&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34758&quot; title=&quot;replSetGetStatus can deadlock with initialSyncer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34758&quot;&gt;&lt;del&gt;SERVER-34758&lt;/del&gt;&lt;/a&gt; Fix to prevent deadlock between initial sync and replSetGetStatus cmd when called along with initialSync:1.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 3c6d6969752ad4322594dab171ca7dd26b854bc8)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bfa481921abc7ca793d1cdbdd2154c2387f68d13&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bfa481921abc7ca793d1cdbdd2154c2387f68d13&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1919901" author="xgen-internal-githook" created="Wed, 13 Jun 2018 18:37:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;smani87&apos;, &apos;name&apos;: &apos;smani87&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34758&quot; title=&quot;replSetGetStatus can deadlock with initialSyncer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34758&quot;&gt;&lt;del&gt;SERVER-34758&lt;/del&gt;&lt;/a&gt; Fix to prevent deadlock between initial sync and replSetGetStatus cmd when called along with initialSync:1.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3c6d6969752ad4322594dab171ca7dd26b854bc8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3c6d6969752ad4322594dab171ca7dd26b854bc8&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="375115">SERVER-28840</issuekey>
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            <issuekey id="553818">SERVER-35372</issuekey>
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