Regression in handling malformed XML files

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      Steps to reproduce

      Create a freestyle job, then stop Jenkins.

      Add leading line breaks to the job's config.xml, like so:

      <?xml version='1.0' encoding='UTF-8'?>
<project>
  <keepDependencies>false</keepDependencies>
  <properties/>
  <scm class="hudson.scm.NullSCM"/>
  <canRoam>false</canRoam>
  <disabled>false</disabled>
  <blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>
  <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
  <triggers/>
  <concurrentBuild>false</concurrentBuild>
  <builders/>
  <publishers/>
  <buildWrappers/>
</project>

      Start Jenkins

      Result

      Mar 12, 2018 5:56:35 PM jenkins.InitReactorRunner$1 onTaskFailed
SEVERE: Failed Loading item ITEMNAME
java.io.IOException: Unable to read …/jobs/ITEMNAME/config.xml
    at hudson.XmlFile.read(XmlFile.java:149)
    at hudson.model.Items.load(Items.java:371)
    at jenkins.model.Jenkins$15.run(Jenkins.java:3075)
    at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
    at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
    at jenkins.model.Jenkins$5.runTask(Jenkins.java:1064)
    at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
    at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: com.thoughtworks.xstream.io.StreamException:  : PI must not start with xml (position:unknown
@2:5 in java.io.InputStreamReader@5176d651)
    at com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:124)
    at com.thoughtworks.xstream.io.xml.AbstractPullReader.readRealEvent(AbstractPullReader.java:148)
    at com.thoughtworks.xstream.io.xml.AbstractPullReader.readEvent(AbstractPullReader.java:141)
    at com.thoughtworks.xstream.io.xml.AbstractPullReader.move(AbstractPullReader.java:118)
    at com.thoughtworks.xstream.io.xml.AbstractPullReader.moveDown(AbstractPullReader.java:103)
    at com.thoughtworks.xstream.io.xml.XppReader.<init>(XppReader.java:63)
    at com.thoughtworks.xstream.io.xml.AbstractXppDriver.createReader(AbstractXppDriver.java:54)
    at com.thoughtworks.xstream.io.xml.AbstractXppDriver.createReader(AbstractXppDriver.java:65)
    at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1053)
    at hudson.XmlFile.read(XmlFile.java:147)
    ... 10 more
Caused by: org.xmlpull.v1.XmlPullParserException: PI must not start with xml (position:unknown
@2:5 in java.io.InputStreamReader@5176d651)
    at org.kxml2.io.KXmlParser.exception(Unknown Source)
    at org.kxml2.io.KXmlParser.error(Unknown Source)
    at org.kxml2.io.KXmlParser.parseLegacy(Unknown Source)
    at org.kxml2.io.KXmlParser.nextImpl(Unknown Source)
    at org.kxml2.io.KXmlParser.next(Unknown Source)
    at com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:109)
    ... 19 more

      This seems to be a regression in Jenkins 2.105 with the XML 1.1 change.

            Assignee:
            Unassigned
            Reporter:
            Daniel Beck
            Archiver:
            Jenkins Service Account

              Created:
              Updated:
              Resolved:
              Archived: