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<channel>
    <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>
    </build-info>


<item>
            <title>[SERVER-3927] killing clients of a loaded Mongo 1.8.3 causing seg fault</title>
                <link>https://jira.mongodb.org/browse/SERVER-3927</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is the easiest way I have found to reproduce the issue we are seeing in production: &lt;/p&gt;

&lt;p&gt;Repro:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;With a default ports build of MongoDB 1.8.3 on FreeBSD 8.2 AMD 64, create a database with about 5 Gigs of data.&lt;/li&gt;
	&lt;li&gt;Load it up with continuous mega-inefficient text-search regex queries from 12 or so node.js clients&lt;/li&gt;
	&lt;li&gt;Let it run for a few minutes&lt;/li&gt;
	&lt;li&gt;Start killing and restarting your clients en masse&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Expected:&lt;br/&gt;
Database stays up&lt;/p&gt;

&lt;p&gt;Observed: &lt;br/&gt;
Seg fault, DB shuts down.&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:29:29 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn109&amp;#93;&lt;/span&gt;   SocketException in connThread, closing client connection&lt;br/&gt;
Thu Sep 22 11:29:30 Invalid access at address: 0x5e8067&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:29:30 Got signal: 11 (Segmentation fault: 11).&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:29:30 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:29:30 dbexit:&lt;/p&gt;

&lt;p&gt;We&apos;ve seen this three times in production, and I have reproduced it on a test server. I&apos;ll try to get a build that will give me a backtrace.&lt;/p&gt;
</description>
                <environment>FreeBSD trellisfc1.hq.fogcreek.com 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011     &lt;a href=&apos;mailto:root@mason.cse.buffalo.edu&apos;&gt;root@mason.cse.buffalo.edu&lt;/a&gt;:/usr/obj/usr/src/sys/GENERIC  amd64</environment>
        <key id="22701">SERVER-3927</key>
            <summary>killing clients of a loaded Mongo 1.8.3 causing seg 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="spencer@mongodb.com">Spencer Brody</assignee>
                                    <reporter username="brettkiefer">Brett Kiefer</reporter>
                        <labels>
                    </labels>
                <created>Thu, 22 Sep 2011 19:36:22 +0000</created>
                <updated>Wed, 29 Feb 2012 03:54:11 +0000</updated>
                            <resolved>Fri, 30 Dec 2011 18:59:44 +0000</resolved>
                                    <version>1.8.1</version>
                    <version>1.8.3</version>
                                                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="76860" author="spencer" created="Fri, 30 Dec 2011 18:59:44 +0000"  >&lt;p&gt;I&apos;m going to resolve this ticket due to lack of activity.  If this is still a problem please re-open the ticket.&lt;/p&gt;</comment>
                            <comment id="69404" author="spencer" created="Mon, 28 Nov 2011 22:58:43 +0000"  >&lt;p&gt;Hey Tim,&lt;br/&gt;
Any update on this?  Are you still having this problem?&lt;/p&gt;</comment>
                            <comment id="57803" author="eliot" created="Fri, 30 Sep 2011 05:36:37 +0000"  >&lt;p&gt;Does the process crash every time you do a map/reduce or eval?  Or just sometimes.&lt;/p&gt;

&lt;p&gt;Access would be great.&lt;/p&gt;</comment>
                            <comment id="57413" author="applsplatz" created="Wed, 28 Sep 2011 22:21:07 +0000"  >&lt;p&gt;Eliot, could you rephrase your question about the JS crash?  I don&apos;t understand what you&apos;re asking.&lt;/p&gt;

&lt;p&gt;I&apos;m sure we could arrange for you to have access to the box.  Let me know if this is something you&apos;d like to do.&lt;/p&gt;</comment>
                            <comment id="56811" author="eliot" created="Tue, 27 Sep 2011 01:53:04 +0000"  >&lt;p&gt;Does all JS crash or just sometimes?&lt;br/&gt;
Can we get access to the box?&lt;/p&gt;</comment>
                            <comment id="56775" author="applsplatz" created="Mon, 26 Sep 2011 22:36:05 +0000"  >&lt;p&gt;Oh, and /usr/local/lib/libjs.so above is Spidermonkey 1.7.0 from FreeBSD ports.&lt;/p&gt;</comment>
                            <comment id="56772" author="applsplatz" created="Mon, 26 Sep 2011 22:34:36 +0000"  >&lt;p&gt;Hello, I work with Brett K.&lt;/p&gt;

&lt;p&gt;I did some digging to figure out why we had no backtrace.  It appears that FreeBSD&apos;s libexecinfo port is returning 0 frames for the backtrace.  So, no output above.&lt;/p&gt;

&lt;p&gt;I reproduced the error within GDB and got the following output (look for &quot;info frame&quot;, &quot;info threads&quot;, and &quot;bt&quot;):&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;
		&lt;tbody &gt;
				&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;  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;Program received signal SIGSEGV, Segmentation fault.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;[Switching to Thread 8020095c0 (LWP 100153)]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;0x000000080149b031 in JS_DHashTableFinish () from /usr/local/lib/libjs.so&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;(gdb) &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;(gdb) &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;(gdb) info frame&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;Stack level 0, frame at 0x7ffffdff0a70:&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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; rip = 0x80149b031 in JS_DHashTableFinish; saved rip 0x8014b6787&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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; called by frame at 0x7ffffdff0c00&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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; Arglist at 0x7ffffdff0a38, args: &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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; Locals at 0x7ffffdff0a38, Previous frame&apos;s sp is 0x7ffffdff0a70&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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; Saved registers:&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  rbx at 0x7ffffdff0a40, rbp at 0x7ffffdff0a48, r12 at 0x7ffffdff0a50, r13 at 0x7ffffdff0a58, r14 at 0x7ffffdff0a60,&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  rip at 0x7ffffdff0a68&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;(gdb) info threads&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  56 Thread 802009b00 (LWP 100194)  0x00000000005d6a27 in mongo::Matcher::matchesDotted (this=0x901139ac0, &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;    fieldName=0x900b3d005 &quot;_id&quot;, toMatch=@0x9010e9e00, obj=@0x7ffffe5f2490, compareOp=12, em=@0x9010e9e00, isArr=false, &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;    details=0x8ffee08b8) at db/matcher.cpp:612&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;* 49 Thread 8020095c0 (LWP 100153)  0x000000080149b031 in JS_DHashTableFinish () from /usr/local/lib/libjs.so&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  10 Thread 80200a200 (LWP 100084)  0x0000000801b4ef7c in recvfrom () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  9 Thread 80200a3c0 (LWP 100082)  0x0000000801b4ef7c in recvfrom () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  8 Thread 80200a580 (LWP 100078)  0x0000000801b9ff6c in select () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  7 Thread 80200a740 (LWP 100076)  0x0000000801b851ac in nanosleep () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  6 Thread 80200a900 (LWP 100075)  0x0000000801b851ac in nanosleep () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  5 Thread 80200aac0 (LWP 100073)  0x00000008019a43cc in __error () from /lib/libthr.so.3&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  4 Thread 80200ac80 (LWP 100069)  0x0000000801b851ac in nanosleep () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  3 Thread 80200ae40 (LWP 100067)  0x0000000801b0015c in sigwait () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;  2 Thread 8020041c0 (LWP 100106)  0x0000000801b9ff6c in select () from /lib/libc.so.7&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;(gdb) bt&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#0  0x000000080149b031 in JS_DHashTableFinish () from /usr/local/lib/libjs.so&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#1  0x00000008014b6787 in js_GC () from /usr/local/lib/libjs.so&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#2  0x000000080149365c in js_DestroyContext () from /usr/local/lib/libjs.so&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#3  0x000000000061a5ff in ~SMScope (this=0x8028d1400) at scripting/engine_spidermonkey.cpp:1179&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#4  0x00000000005fb866 in mongo::ScriptEngine::threadDone (this=Variable &quot;this&quot; is not available.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;) at scripting/engine.cpp:294&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#5  0x00000000008ba111 in mongo::connThread (inPort=0x802824300) at db/db.cpp:329&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#6  0x0000000800e83187 in thread_proxy () from /usr/local/lib/libboost_thread.so&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#7  0x000000080199a4f1 in pthread_getprio () from /lib/libthr.so.3&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;#8  0x00007ffffddf1000 in ?? ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;   margin-bottom: 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;Error accessing memory address 0x7ffffdff1000: Bad address.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;It appears the crash itself is in JS_DHashTableFinish inside of libjs.so.&lt;/p&gt;

&lt;p&gt;Does this ring any bells?&lt;/p&gt;

&lt;p&gt;I can provide more output from GDB if necessary.&lt;/p&gt;</comment>
                            <comment id="56706" author="brettkiefer" created="Mon, 26 Sep 2011 18:36:30 +0000"  >&lt;p&gt;Okay, we rebuilt in devel mode, but we&apos;re still not getting stack traces. Same as before, blank backtraces. Any idea how we can get a stack trace?&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 dbexit:&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; shutdown: going to close listening sockets...&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; closing listening socket: 4&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; closing listening socket: 5&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; closing listening socket: 6&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; closing listening socket: 7&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; removing socket file: /tmp/mongodb-27017.sock&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; removing socket file: /tmp/mongodb-28017.sock&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; shutdown: going to flush diaglog...&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; shutdown: going to close sockets...&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; shutdown: waiting for fs preallocator...&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; shutdown: closing all files...&lt;br/&gt;
Thu Sep 22 11:56:55 Invalid access at address: 0x86bdb2246&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Got signal: 11 (Segmentation fault: 11).&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 dbexit: ; exiting immediately&lt;br/&gt;
Thu Sep 22 11:56:55 Invalid access at address: 0x86bdb2246&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Got signal: 11 (Segmentation fault: 11).&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Invalid access at address: 0x86bdb2246&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Got signal: 11 (Segmentation fault: 11).&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Invalid access at address: 0x86bdb2246&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Got signal: 11 (Segmentation fault: 11).&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 closeAllFiles() finished&lt;br/&gt;
Thu Sep 22 11:56:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn17&amp;#93;&lt;/span&gt; shutdown: removing fs lock...&lt;br/&gt;
Thu Sep 22 11:56:55 dbexit: really exiting now&lt;br/&gt;
Thu Sep 22 11:56:55 Invalid access at address: 0x86bdb2246&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Got signal: 11 (Segmentation fault: 11).&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 Backtrace:&lt;/p&gt;

&lt;p&gt;Thu Sep 22 11:56:55 ERROR: Client::~Client _context should be null but is not; client:conn&lt;/p&gt;</comment>
                            <comment id="56613" author="brettkiefer" created="Mon, 26 Sep 2011 13:05:11 +0000"  >&lt;p&gt;We can try to repro the issue on Linux, but I don&apos;t know that it would tell us anything new about the problem - if it did seg fault, we&apos;d be in the same place, and if it didn&apos;t, we&apos;d have to figure that memory allocation differences on Linux are saving it.&lt;/p&gt;

&lt;p&gt;Or are you saying that right now it is generally foolish to run MongoDB on FreeBSD in production? We had another Trello outage this morning because MongoDB was not responding to queries, even though the service was up - we&apos;re getting the specifics right now. Restarting Mongo fixed it, but if MongoDB on FreeBSD just isn&apos;t stable yet, we will certainly think about moving.&lt;/p&gt;</comment>
                            <comment id="56080" author="eliot" created="Fri, 23 Sep 2011 04:04:51 +0000"  >&lt;p&gt;we&apos;ve seen various odd things with freebsd to date and is not a platform we fully test on yet.&lt;br/&gt;
any chance of trying on linux?&lt;/p&gt;</comment>
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