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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1812) CloseableHttpClient.execute generates SIGSEGV in jvm
Date Sat, 04 Feb 2017 11:47:52 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852753#comment-15852753
] 

Sebb commented on HTTPCLIENT-1812:
----------------------------------

The SIGSEV is a JVM bug; it should not be possible for Java code (*) to crash the JVM.
It should be reported back to the JVM provider.

The OOM could also be indirectly caused by the JVM, e.g. if it behaves in an unexpected way.
Or indeed directly caused by the JVM if it has other bugs.

(*) JNI code can easily be the cause of crashes, but HC does not use JNI, only standard Java
code.

> CloseableHttpClient.execute generates SIGSEGV in jvm
> ----------------------------------------------------
>
>                 Key: HTTPCLIENT-1812
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1812
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient (classic)
>    Affects Versions: 4.5.2, 4.5.3
>         Environment: openjdk version "1.8.0_121"
> OpenJDK Runtime Environment (IcedTea 3.3.0) (suse-6.4-x86_64)
> OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode)
>            Reporter: Harald Brennich
>         Attachments: hs_error.log
>
>
> I am using HttpComponents to read a specific web page. This worked fine until yesterday
(02/03/2017). Now, on executing a request to the URI http://www.timeanddate.com/astronomy/germany/munich,
the JVM reports a SIGSEGV. See attachment.for version 4.53. Version 4.5.2 was similar.
> On slightly modifying the calling java code by instantiating the HttpClientBuilder before
building the CloseableHttpClient, instead of sigsegving an exception is thrown:
> "
> 	 java.lang.OutOfMemoryError: Java heap space
> 	 sun.security.ec.ECKeyPairGenerator.generateECKeyPair(Native Method)
> 	 sun.security.ec.ECKeyPairGenerator.generateKeyPair(ECKeyPairGenerator.java:126)
> 	 java.security.KeyPairGenerator$Delegate.generateKeyPair(KeyPairGenerator.java:704)
> 	 sun.security.ssl.ECDHCrypt.<init>(ECDHCrypt.java:78)
> 	 sun.security.ssl.ClientHandshaker.serverKeyExchange(ClientHandshaker.java:717)
> 	 sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:278)
> 	 sun.security.ssl.Handshaker.processLoop(Handshaker.java:913)
> 	 sun.security.ssl.Handshaker.process_record(Handshaker.java:849)
> 	 sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1033)
> 	 sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1342)
> 	 sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1369)
> 	 sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1353)
> 	 org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:396)
> 	 org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:355)
> 	 org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
> 	 org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:359)
> 	 org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:381)
> 	 org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)
> 	 org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
> 	 org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
> 	 org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
> 	 org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
> 	 org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
> 	 org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
> "
> Finally, on setting the user agent (via HttpClientBuilder.setUserAgent) to
> "Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0" the CloseableHttpClient.execute
works again (as it did  previously)



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