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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-44815] Adding arbiter to PSS deployment using mmap causes 4.0.13 server to segfault</title>
                <link>https://jira.mongodb.org/browse/SERVER-44815</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In the Ruby driver test suite we have had mmapv1 configurations on 4.0 servers. These are tested in standalone and RS (PSS) topologies and have worked fine up to yesterday.&lt;/p&gt;

&lt;p&gt;Yesterday I added an arbiter to the replica set topologies to test handshake/authentication against arbiters. This is causing segfaults in mongods in the mmapv1 deployments.&lt;/p&gt;

&lt;p&gt;Build 1: &lt;a href=&quot;https://evergreen.mongodb.com/build/mongo_ruby_driver_mmapv1__mongodb_version~4.0_topology~replica_set_ruby~ruby_2.6_os~rhel70_storage_engine~mmapv1_patch_8cf29a2bc69e3e6f6cba0dfe658c978f5dc7ef8d_5dd981d51e2d176959d58768_19_11_23_19_00_39/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/build/mongo_ruby_driver_mmapv1__mongodb_version~4.0_topology~replica_set_ruby~ruby_2.6_os~rhel70_storage_engine~mmapv1_patch_8cf29a2bc69e3e6f6cba0dfe658c978f5dc7ef8d_5dd981d51e2d176959d58768_19_11_23_19_00_39/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Build 2: &lt;a href=&quot;https://evergreen.mongodb.com/build/mongo_ruby_driver_mmapv1__mongodb_version~3.6_topology~replica_set_ruby~ruby_2.6_os~rhel70_storage_engine~mmapv1_patch_8cf29a2bc69e3e6f6cba0dfe658c978f5dc7ef8d_5dd981d51e2d176959d58768_19_11_23_19_00_39/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/build/mongo_ruby_driver_mmapv1__mongodb_version~3.6_topology~replica_set_ruby~ruby_2.6_os~rhel70_storage_engine~mmapv1_patch_8cf29a2bc69e3e6f6cba0dfe658c978f5dc7ef8d_5dd981d51e2d176959d58768_19_11_23_19_00_39/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;If you look at the server logs, 2 out of 3 mongods in each build have died with segfaults. The remaining mongod is unable to establish a primary hence the test suite fails from that point on.&lt;/p&gt;

&lt;p&gt;Please disregard the claimed 3.6 server version, both builds are using 4.0.13.&lt;/p&gt;

&lt;p&gt;What additional information do I need to provide?&lt;/p&gt;</description>
                <environment></environment>
        <key id="1023426">SERVER-44815</key>
            <summary>Adding arbiter to PSS deployment using mmap causes 4.0.13 server to segfault</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="3">Duplicate</resolution>
                                        <assignee username="dmitry.agranat@mongodb.com">Dmitry Agranat</assignee>
                                    <reporter username="oleg.pudeyev@mongodb.com">Oleg Pudeyev</reporter>
                        <labels>
                    </labels>
                <created>Sun, 24 Nov 2019 17:29:24 +0000</created>
                <updated>Thu, 19 Dec 2019 10:45:20 +0000</updated>
                            <resolved>Thu, 19 Dec 2019 10:44:53 +0000</resolved>
                                    <version>4.0.13</version>
                                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                    <issuelinks>
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                    <name>Depends</name>
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                                        <issuelink>
            <issuekey id="911304">SERVER-43079</issuekey>
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            <issuelink>
            <issuekey id="887938">PYTHON-1948</issuekey>
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            <issuekey id="911304">SERVER-43079</issuekey>
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            <issuekey id="1023428">RUBY-2023</issuekey>
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