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Posted to issues@lucene.apache.org by "Christian Hafner-Sprengholz (Jira)" <ji...@apache.org> on 2020/03/23 09:31:00 UTC
[jira] [Commented] (SOLR-13183) NullPointerException at
o.a.solr.servlet.SolrDispatchFilter.doFilter
[ https://issues.apache.org/jira/browse/SOLR-13183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17064655#comment-17064655 ]
Christian Hafner-Sprengholz commented on SOLR-13183:
----------------------------------------------------
We are experiencing the same behaviour as described using 7.7.2 (we are bound to this version).
Has someone a workaround for this?
{noformat}
schema/analysis/synonyms/cs/100%25+dzus
{noformat}
{code:java}
java.lang.NullPointerException: null
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:404) ~[?:?]
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:341) ~[?:?]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602) ~[jetty-servlet-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540) ~[jetty-servlet-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) ~[jetty-security-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) ~[jetty-servlet-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335) ~[jetty-rewrite-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.Server.handle(Server.java:502) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) ~[jetty-server-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) ~[jetty-io-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) ~[jetty-io-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) ~[jetty-io-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) ~[jetty-util-9.4.14.v20181114.jar:9.4.14.v20181114]
at java.lang.Thread.run(Thread.java:834) [?:?]
{code}
> NullPointerException at o.a.solr.servlet.SolrDispatchFilter.doFilter
> --------------------------------------------------------------------
>
> Key: SOLR-13183
> URL: https://issues.apache.org/jira/browse/SOLR-13183
> Project: Solr
> Issue Type: Bug
> Affects Versions: master (9.0)
> Environment: h1. Steps to reproduce
> * Use a Linux machine.
> * Build commit {{ea2c8ba}} of Solr as described in the section below.
> * Build the films collection as described below.
> * Start the server using the command {{./bin/solr start -f -p 8983 -s /tmp/home}}
> * Request the URL given in the bug description.
> h1. Compiling the server
> {noformat}
> git clone https://github.com/apache/lucene-solr
> cd lucene-solr
> git checkout ea2c8ba
> ant compile
> cd solr
> ant server
> {noformat}
> h1. Building the collection
> We followed [Exercise 2|http://lucene.apache.org/solr/guide/7_5/solr-tutorial.html#exercise-2] from the [Solr Tutorial|http://lucene.apache.org/solr/guide/7_5/solr-tutorial.html]. The attached file ({{home.zip}}) gives the contents of folder {{/tmp/home}} that you will obtain by following the steps below:
> {noformat}
> mkdir -p /tmp/home
> echo '<?xml version="1.0" encoding="UTF-8" ?><solr></solr>' > /tmp/home/solr.xml
> {noformat}
> In one terminal start a Solr instance in foreground:
> {noformat}
> ./bin/solr start -f -p 8983 -s /tmp/home
> {noformat}
> In another terminal, create a collection of movies, with no shards and no replication, and initialize it:
> {noformat}
> bin/solr create -c films
> curl -X POST -H 'Content-type:application/json' --data-binary '{"add-field": {"name":"name", "type":"text_general", "multiValued":false, "stored":true}}' http://localhost:8983/solr/films/schema
> curl -X POST -H 'Content-type:application/json' --data-binary '{"add-copy-field" : {"source":"*","dest":"_text_"}}' http://localhost:8983/solr/films/schema
> ./bin/post -c films example/films/films.json
> {noformat}
> Reporter: Cesar Rodriguez
> Priority: Minor
> Labels: diffblue, newdev
> Attachments: home.zip
>
>
> Requesting the following URL causes Solr to return an HTTP 500 error response:
> {noformat}
> http://localhost:8983/solr/films/schema/%25
> {noformat}
> The error response seems to be caused by the following uncaught exception:
> {noformat}
> java.lang.NullPointerException
> at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:403)
> at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:340)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
> at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
> at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
> [...]
> {noformat}
> Function SolrDisplatchFilter.doFilter(), line 403 calls methods forward() on a null pointer. The problem happens because ServletRequestWrapper.getRequestDispatcher(), line 338 returns null. And that happens because org.eclipse.jetty.server.handler.ContextHandler.Context.getRequestDispatcher() returns a null pointer. This happens because org.eclipse.jetty.http.HttpURI.getDecodedPath() tries to decode the string {{/solr/films/schema/%}}, which is an invalid encoding.
> I don’t fully follow the logic of the code but it seems that the percent-encoding of the URL has first been decoded and then it’s being decoded again?
> We found this bug using [Diffblue Microservices Testing|https://www.diffblue.com/labs/]. Find more information on this [fuzz testing campaign|https://www.diffblue.com/blog/2018/12/19/diffblue-microservice-testing-a-sneak-peek-at-our-early-product-and-results].
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