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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-6559] db.runCommand with renameCollection causes mongod to crash</title>
                <link>https://jira.mongodb.org/browse/SERVER-6559</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Trying to drop a collection named with periods and underscores, which fails.  Tried to rename is using renameCollection, to then drop it.  The runCommand/renameCollection causes mongod to crash:&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;kmiller@walnut badger&amp;#93;&lt;/span&gt;$ start-datastore&lt;br/&gt;
forked process: 14574&lt;br/&gt;
all output going to: /home/kmiller/datastore/mongod.log&lt;br/&gt;
child process started successfully, parent exiting&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;kmiller@walnut badger&amp;#93;&lt;/span&gt;$ mongo localhost:27006/kmiller --verbose&lt;br/&gt;
MongoDB shell version: 2.2.0-rc0&lt;br/&gt;
Mon Jul 23 14:39:54 versionCmpTest passed&lt;br/&gt;
Mon Jul 23 14:39:54 versionArrayTest passed&lt;br/&gt;
connecting to: localhost:27006/kmiller&lt;br/&gt;
Mon Jul 23 14:39:54 creating new connection to:localhost:27006&lt;br/&gt;
Mon Jul 23 14:39:54 BackgroundJob starting: ConnectBG&lt;br/&gt;
Mon Jul 23 14:39:54 connected connection!&lt;br/&gt;
MongoDB(SECONDARY) 57.4.26.83:27006/kmiller&amp;gt; db.distribution.20120524_1342.drop()&lt;br/&gt;
Mon Jul 23 14:40:10 SyntaxError: missing ; before statement (shell):1&lt;br/&gt;
MongoDB(PRIMARY) 57.4.26.83:27006/kmiller&amp;gt; use admin&lt;br/&gt;
switched to db admin&lt;br/&gt;
MongoDB(PRIMARY) 57.4.26.83:27006/admin&amp;gt; db.runCommand(&lt;/p&gt;
{renameCollection: &quot;distribution.20120524_1342&quot;, to: &quot;deleteme&quot;}
&lt;p&gt;)&lt;br/&gt;
Mon Jul 23 14:40:18 SocketException: remote: 127.0.0.1:27006 error: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;0&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;127.0.0.1:27006&amp;#93;&lt;/span&gt;&lt;br/&gt;
Mon Jul 23 14:40:18 DBClientCursor::init call() failed&lt;br/&gt;
Mon Jul 23 14:40:18 query failed : admin.$cmd &lt;/p&gt;
{ renameCollection: &quot;distribution.20120524_1342&quot;, to: &quot;deleteme&quot; }
&lt;p&gt; to: localhost:27006&lt;br/&gt;
Mon Jul 23 14:40:18 Error: error doing query: failed src/mongo/shell/collection.js:155&lt;br/&gt;
Mon Jul 23 14:40:18 trying reconnect to localhost:27006&lt;br/&gt;
Mon Jul 23 14:40:18 BackgroundJob starting: ConnectBG&lt;br/&gt;
Mon Jul 23 14:40:18 reconnect localhost:27006 failed couldn&apos;t connect to server localhost:27006&lt;br/&gt;
&amp;gt; exit&lt;br/&gt;
bye&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;kmiller@walnut badger&amp;#93;&lt;/span&gt;$ ps -ef|grep kmiller|grep mongod&lt;br/&gt;
kmiller  14660 13972  0 14:40 pts/6    00:00:00 grep mongod&lt;/p&gt;


&lt;p&gt;Noticed this happened in 2.1.2 as well, but thought it might be fixed in 2.2.0-rc0.  It isn&apos;t urgent to delete the collection and I know this is just a release candidate, but noticed the problem and thought I would mention it.&lt;/p&gt;

&lt;p&gt;Rgds/Kim&lt;/p&gt;</description>
                <environment>RHEL 6.1 64 bit</environment>
        <key id="45105">SERVER-6559</key>
            <summary>db.runCommand with renameCollection causes mongod to crash</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="tad">Tad Marshall</assignee>
                                    <reporter username="kim.miller@sita.aero">Kim Miller</reporter>
                        <labels>
                    </labels>
                <created>Mon, 23 Jul 2012 14:47:55 +0000</created>
                <updated>Mon, 11 Jul 2016 17:59:39 +0000</updated>
                            <resolved>Tue, 7 Aug 2012 17:48:44 +0000</resolved>
                                    <version>2.2.0-rc0</version>
                                    <fixVersion>2.2.0-rc1</fixVersion>
                                    <component>Shell</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="151196" author="auto" created="Tue, 7 Aug 2012 17:43:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-07T08:36:21-07:00&apos;, u&apos;email&apos;: u&apos;tad@10gen.com&apos;, u&apos;name&apos;: u&apos;Tad Marshall&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6559&quot; title=&quot;db.runCommand with renameCollection causes mongod to crash&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6559&quot;&gt;&lt;del&gt;SERVER-6559&lt;/del&gt;&lt;/a&gt; do not segfault parsing collection name&lt;/p&gt;

&lt;p&gt;Rework two lines of code to not crash on missing periods in&lt;br/&gt;
namespace names being checked for correctness.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/aec02b62d192a56b647e6f28afbe5bfdec9b2e92&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/aec02b62d192a56b647e6f28afbe5bfdec9b2e92&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="146100" author="tad" created="Mon, 23 Jul 2012 15:18:57 +0000"  >&lt;p&gt;Confirmed: passing a &quot;to&quot; collection name that does not include a period leads to segfault.&lt;/p&gt;

&lt;p&gt;mongo/src/mongo/db/namespacestring.h lines 115 to 118 (annotated):&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;static bool validCollectionName(const char* dbcoll){&lt;/span&gt;&lt;/pre&gt;
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					&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;    const char *c = strchr( dbcoll, &apos;.&apos; ) + 1;    // strchr() returns zero if character not found, so &apos;c&apos; is set to 1&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;    return normal(dbcoll) &amp;amp;&amp;amp; c &amp;amp;&amp;amp; *c;             // segfault reading from address 1&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;</comment>
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