Date: Mon, 09 Sep 2002 08:41:51 +0800 From: Huang wen hui <hwh@mail.gddsn.org.cn> To: Huang wen hui <hwh@mail.gddsn.org.cn> Cc: java <java@freebsd.org> Subject: Re: java core dump when using InetAddress.getHostName under current Message-ID: <3D7BEE4F.5010909@mail.gddsn.org.cn> References: <3D7B44C9.3030807@mail.gddsn.org.cn>
next in thread | previous in thread | raw e-mail | index | archive | help
Huang wen hui wrote:
>hi,
>The following example can cause java ( both classic and hotspot) core dump:
>-------------------------------------------------------------
>import java.net.*;
>
>public class TestGetHostByAddr {
>public static void main(String[] args) throws Exception {
>Socket socket = new Socket("www.freebsd.org", 80);
>InetAddress localAddr = socket.getLocalAddress();
>String host = localAddr.getHostName();
>System.out.println("Local Host name is: "+ host);
>socket.close();
>}
>}
>
>--------------------------------------------------------------
>(gdb) run TestGetHostByAddr
>Starting program: /usr/local/jdk1.3.1/bin/i386/native_threads/java_g
>TestGetHostByAddr
>
>Program received signal SIGBUS, Bus error.
>0x297ab90e in Java_java_net_InetAddressImpl_getHostByAddr
>(env=0x806c2b0, this=0xbfbfeddc, addr=83994816) at
>../../../src/solaris/native/java/net/InetAddressImpl.c:311
>311 ret = (*env)->NewStringUTF(env, hp->h_name);
>(gdb) print hp->h_name
>Error accessing memory address 0xffffffff: Bad address.
>(gdb) bt
>#0 0x297ab90e in Java_java_net_InetAddressImpl_getHostByAddr
>(env=0x806c2b0, this=0xbfbfeddc, addr=83994816)
>at ../../../src/solaris/native/java/net/InetAddressImpl.c:311
>#1 0x080ee1ac in ?? ()
>#2 0x080ea56d in ?? ()
>#3 0x080ea56d in ?? ()
>#4 0x080ea56d in ?? ()
>#5 0x2863af5d in StubRoutines::_code1 () from
>/usr/local/jdk1.3.1/jre/lib/i386/client/libjvm_g.so
>#6 0x283030b9 in JavaCalls::call_helper(JavaValue*, methodHandle*,
>JavaCallArguments*, Thread*) (result=0xbfbff080, m=0xbfbfef54,
>args=0xbfbfef80,
>__the_thread__=0x806c218) at
>/usr/ports/java/jdk13/work/hotspot1.3.1/src/share/vm/runtime/javaCalls.cpp:378
>#7 0x28302c54 in JavaCalls::call(JavaValue*, methodHandle,
>JavaCallArguments*, Thread*) (result=0xbfbff080, method=ABI doesn't
>define required function baseclass_offset
>)
>at
>/usr/ports/java/jdk13/work/hotspot1.3.1/src/share/vm/runtime/javaCalls.cpp:287
>#8 0x2830f996 in jni_invoke(JNIEnv_*, JavaValue*, _jobject*,
>JNICallType, _jmethodID*, JNI_ArgumentPusher*, Thread*) ()
>from /usr/local/jdk1.3.1/jre/lib/i386/client/libjvm_g.so
>#9 0x2832438a in jni_CallStaticVoidMethod () from
>/usr/local/jdk1.3.1/jre/lib/i386/client/libjvm_g.so
>#10 0x08049346 in main (argc=0, argv=0xbfbff9bc) at
>../../../../src/share/bin/java.c:323
>#11 0x08048bc1 in _start ()
>
>
>
OK, Under -Current, InetAddress.getHostName should call gethostbyname_r
in src/solaris/native/java/net/InetAddressImpl.c,
but it call gethostbyname_r in /usr/src/lib/libc/net/gethostnamadr.c.
--hwh
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-java" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3D7BEE4F.5010909>