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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-30788] Mongodb 3.4.4 - Invalid Access at Address - Signal: 11 Segmentation fault</title>
                <link>https://jira.mongodb.org/browse/SERVER-30788</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have a 2-server replicate set. We&apos;ve been having issue where mongo would crash after a few weeks. Both servers experienced this issue. &lt;/p&gt;</description>
                <environment></environment>
        <key id="419165">SERVER-30788</key>
            <summary>Mongodb 3.4.4 - Invalid Access at Address - Signal: 11 Segmentation fault</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="keith.bostic@mongodb.com">Keith Bostic</assignee>
                                    <reporter username="jonason.ho@dat.com">Jonason Ho</reporter>
                        <labels>
                    </labels>
                <created>Wed, 23 Aug 2017 00:17:19 +0000</created>
                <updated>Thu, 5 Sep 2019 15:32:16 +0000</updated>
                            <resolved>Thu, 5 Sep 2019 15:32:16 +0000</resolved>
                                    <version>3.4.4</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="1655124" author="keith.bostic" created="Wed, 23 Aug 2017 16:06:43 +0000"  >&lt;p&gt;I think this is likely memory corruption, we should review the system logs to see if there are any reported problems, and perhaps check for heat problems in the data center.&lt;/p&gt;

&lt;p&gt;I suspect bad memory because:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;there are 3 different stacks, all of the stacks are in heavily exercised WiredTiger code paths,&lt;/li&gt;
	&lt;li&gt;these are all unique failures for the MongoDB release (we haven&apos;t had any other customer or user experience segment faults in these paths), and&lt;/li&gt;
	&lt;li&gt;although it&apos;s difficult to prove, the reference that&apos;s likely failing shouldn&apos;t have been the first reference to that memory location in the particular code path.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=anonymous.user&quot; class=&quot;user-hover&quot; rel=&quot;anonymous.user&quot;&gt;anonymous.user&lt;/a&gt; notes these failures are from different servers, which makes hardware failure less likely, but regardless, I think this is unlikely to be a software bug.&lt;/p&gt;</comment>
                            <comment id="1654592" author="alexander.gorrod" created="Wed, 23 Aug 2017 04:02:03 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=keith.bostic&quot; class=&quot;user-hover&quot; rel=&quot;keith.bostic&quot;&gt;keith.bostic&lt;/a&gt; Could you take a look at this please? I&apos;m not sure if a NULL is possible for &lt;tt&gt;cell&lt;/tt&gt;, this code path passes a NULL in for the length check, but that comes via the &lt;tt&gt;WT_ADDR&lt;/tt&gt; structure in &lt;tt&gt;__wt_ref_info&lt;/tt&gt; that can&apos;t be NULL in this code path..&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="163809" name="server1_0802_crash_log.txt" size="10958" author="jonason.ho@dat.com" created="Tue, 22 Aug 2017 23:48:03 +0000"/>
                            <attachment id="163807" name="server1_0817_crash_log.txt" size="10818" author="jonason.ho@dat.com" created="Tue, 22 Aug 2017 23:48:03 +0000"/>
                            <attachment id="163810" name="server2_0713_crash_log.txt" size="11043" author="jonason.ho@dat.com" created="Tue, 22 Aug 2017 23:48:03 +0000"/>
                            <attachment id="163808" name="server2_0811_crash_log.txt" size="18731" author="jonason.ho@dat.com" created="Tue, 22 Aug 2017 23:48:03 +0000"/>
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