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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-35785] mongod crash on startup when passing -f on directory instead of file</title>
                <link>https://jira.mongodb.org/browse/SERVER-35785</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I accidentally was trying to launch a mongod (4.0.0-rc7) passing a directory instead of file and got this stack trace in return.&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;&amp;nbsp;&lt;/pre&gt;
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						&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;mongod -f db/&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;tcmalloc: large alloc 9223372036854775808 bytes == (nil) @&lt;/span&gt;&lt;/pre&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;2018-06-25T19:16:10.655+0000 F - [main] out of memory.&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;0x7f341bef10a1 0x7f341bef06d4 0x7f341bfdfb6b 0x7f341c082564 0x7f341bdb8183 0x7f341bdaca8f 0x7f341bdb5b3c 0x7f341a542111 0x7f341a53c933 0x7f341bea42a1 0x7f341bea4b12 0x7f341a53aad7 0x7f341a4ccc69 0x7f341685bec5 0x7f341a539d4f&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&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;----- BEGIN BACKTRACE -----&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;{&quot;backtrace&quot;:[{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;243F0A1&quot;,&quot;s&quot;:&quot;_ZN5mongo15printStackTraceERSo&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;243E6D4&quot;,&quot;s&quot;:&quot;_ZN5mongo29reportOutOfMemoryErrorAndExitEv&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;252DB6B&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;25D0564&quot;,&quot;s&quot;:&quot;_Znam&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;2306183&quot;,&quot;s&quot;:&quot;_ZNSt6vectorIcSaIcEE17_M_default_appendEm&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;22FAA8F&quot;,&quot;s&quot;:&quot;_ZN5mongo17optionenvironment13OptionsParser14readConfigFileERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS7_&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;2303B3C&quot;,&quot;s&quot;:&quot;_ZN5mongo17optionenvironment13OptionsParser3runERKNS0_13OptionSectionERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISB_EERKSt3mapISB_SB_St4lessISB_ESaISt4pairIKSB_SB_EEEPNS0_11EnvironmentE&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;A90111&quot;,&quot;s&quot;:&quot;_ZN5mongo17optionenvironment46_mongoInitializerFunction_StartupOptions_ParseEPNS_18InitializerContextE&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;A8A933&quot;,&quot;s&quot;:&quot;_ZNSt17_Function_handlerIFN5mongo6StatusEPNS0_18InitializerContextEEPS4_E9_M_invokeERKSt9_Any_dataOS3_&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;23F22A1&quot;,&quot;s&quot;:&quot;_ZN5mongo11Initializer19executeInitializersERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EERKSt3mapIS7_S7_St4lessIS7_ESaISt4pairIKS7_S7_EEE&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;23F2B12&quot;,&quot;s&quot;:&quot;_ZN5mongo21runGlobalInitializersEiPKPKcS3_&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;A88AD7&quot;,&quot;s&quot;:&quot;_ZN5mongo11mongoDbMainEiPPcS1_&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;A1AC69&quot;,&quot;s&quot;:&quot;main&quot;},{&quot;b&quot;:&quot;7F341683A000&quot;,&quot;o&quot;:&quot;21EC5&quot;,&quot;s&quot;:&quot;__libc_start_main&quot;},{&quot;b&quot;:&quot;7F3419AB2000&quot;,&quot;o&quot;:&quot;A87D4F&quot;}]}&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;mongod(_ZN5mongo15printStackTraceERSo+0x41) [0x7f341bef10a1]&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;mongod(_ZN5mongo29reportOutOfMemoryErrorAndExitEv+0x84) [0x7f341bef06d4]&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;mongod(+0x252DB6B) [0x7f341bfdfb6b]&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;mongod(_Znam+0x224) [0x7f341c082564]&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;mongod(_ZNSt6vectorIcSaIcEE17_M_default_appendEm+0x83) [0x7f341bdb8183]&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;mongod(_ZN5mongo17optionenvironment13OptionsParser14readConfigFileERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS7_+0x25F) [0x7f341bdaca8f]&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;mongod(_ZN5mongo17optionenvironment13OptionsParser3runERKNS0_13OptionSectionERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISB_EERKSt3mapISB_SB_St4lessISB_ESaISt4pairIKSB_SB_EEEPNS0_11EnvironmentE+0x163C) [0x7f341bdb5b3c]&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;mongod(_ZN5mongo17optionenvironment46_mongoInitializerFunction_StartupOptions_ParseEPNS_18InitializerContextE+0x51) [0x7f341a542111]&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;mongod(_ZNSt17_Function_handlerIFN5mongo6StatusEPNS0_18InitializerContextEEPS4_E9_M_invokeERKSt9_Any_dataOS3_+0x23) [0x7f341a53c933]&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;mongod(_ZN5mongo11Initializer19executeInitializersERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EERKSt3mapIS7_S7_St4lessIS7_ESaISt4pairIKS7_S7_EEE+0x371) [0x7f341bea42a1]&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;mongod(_ZN5mongo21runGlobalInitializersEiPKPKcS3_+0x352) [0x7f341bea4b12]&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;mongod(_ZN5mongo11mongoDbMainEiPPcS1_+0xA7) [0x7f341a53aad7]&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;mongod(main+0x9) [0x7f341a4ccc69]&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;libc.so.6(__libc_start_main+0xF5) [0x7f341685bec5]&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;mongod(+0xA87D4F) [0x7f341a539d4f]&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;----- END BACKTRACE -----&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;This was caused by pilot error, nevertheless `mongod` probably should not error out this way.&lt;/p&gt;</description>
                <environment></environment>
        <key id="563941">SERVER-35785</key>
            <summary>mongod crash on startup when passing -f on directory instead of file</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="annie.black@mongodb.com">Annie Black</assignee>
                                    <reporter username="norberto.leite">Norberto Fernando Rocha Leite</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Mon, 25 Jun 2018 19:30:48 +0000</created>
                <updated>Sun, 29 Oct 2023 22:30:27 +0000</updated>
                            <resolved>Fri, 21 Sep 2018 15:56:56 +0000</resolved>
                                                    <fixVersion>4.1.4</fixVersion>
                                    <component>Admin</component>
                                        <votes>0</votes>
                                    <watches>151</watches>
                                                                                                                <comments>
                            <comment id="2010339" author="xgen-internal-githook" created="Fri, 21 Sep 2018 14:12:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;ablack12&apos;, &apos;email&apos;: &apos;annie.black@10gen.com&apos;, &apos;username&apos;: &apos;ablack12&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35785&quot; title=&quot;mongod crash on startup when passing -f on directory instead of file&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35785&quot;&gt;&lt;del&gt;SERVER-35785&lt;/del&gt;&lt;/a&gt; fix readConfigFile to not crash with -f&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/44290425aebb3e6db398a55169c6c5864a48829c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/44290425aebb3e6db398a55169c6c5864a48829c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1956855" author="adam.martin" created="Wed, 25 Jul 2018 22:07:46 +0000"  >&lt;p&gt;Addendum: BSD based systems (including OSX) have slightly different semantics from SYSV based systems (or those inspired by SYSV, like Linux), when it comes to file-style IO on a directory.&#160; IIRC, BSD based systems are incredibly forgiving, and permit direct reading of the raw directory file&apos;s dirent encodings.&lt;/p&gt;

&lt;p&gt;POSIX forbids `fopen` in write mode on a directory, issuing an errno: EISDIR.&#160; However it is silent on read-only access.&#160; Further, `open` in POSIX, which underlies `fopen`, is not forbidden on directories, when opening read-only&lt;/p&gt;</comment>
                            <comment id="1956823" author="adam.martin" created="Wed, 25 Jul 2018 21:44:26 +0000"  >&lt;p&gt;The error text `&quot;Error reading in config file:&quot;` comes from later in the configuration parsing logic, after the memory allocation: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L897&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L897&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;However, the nearly identical error text: `&quot;Error reading config file:&quot;` comes earlier in this logic: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L859&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L859&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Therefore, it appears that regardless of platform, a large amount of memory is requested.&#160; Probably depending upon system over-provisioning options and other variables, the allocation may succeed or fail.&#160; If the allocation succeeds (allocating -1 bytes, which becomes &quot;absurdly large&quot;), then the results of `ftell` are used and the -1 is detected because an absurdly large amount of data to read is sent to `fread`, thus causing it to fail here: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L892&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L892&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The check for a negative return from `ftell` should probably be moved earlier.&#160; Also, considering the age of this file and a few other potential problems I see in the configuration file logic we may want to consider investing some time into improving this code.&lt;/p&gt;</comment>
                            <comment id="1931113" author="mark.benvenuto" created="Mon, 25 Jun 2018 20:58:30 +0000"  >&lt;p&gt;This does not repro for me on Fedora 28. It does repro on Ubuntu 16.04.&lt;/p&gt;

&lt;p&gt;In this case, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab0c426e60c4bdcc49b5a48a93f84828414d5ba6/src/mongo/util/options_parser/options_parser.cpp#L873&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;ftell()&lt;/tt&gt;&lt;/a&gt; is returning a -1 indicating an error. This -1 is then used to allocate memory.&lt;/p&gt;

&lt;p&gt;On Fedora 28 (Glibc 2.27), ftell returns 178.&lt;/p&gt;</comment>
                            <comment id="1931018" author="ramon.fernandez" created="Mon, 25 Jun 2018 19:41:59 +0000"  >&lt;p&gt;I can reproduce this on Ubuntu 16.04 with 3.4.15 and 3.6.5, while in macOS I get:&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;$ mongod -f db/&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;Error reading in config file: Is a directory&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;try &apos;mongod --help&apos; for more information&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
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