JVM在libzip.so崩溃
我的JVM一直在libzip.so上不断地和意外地崩溃。 我已经向Oracle提交了这个错误，但是我决定看看这里是否有人遇到过这个问题，如果有的话，你是怎么处理它的？ 这是一个正在运行的Web应用程序
Linux 2.6.34-gentoo-r6＃1 SMP Fri Sep 24 00:15:06 EDT 2010 i686 Intel（R）Xeon（R）CPU X5460 @ 3.16GHz GenuineIntel GNU / Linux
Tomcat 7.0.14与jsvc。
我已经在下面列出了错误报告的快照。 它是一个独立的服务器，没有人在运行时访问任何tomcat的jar或任何其他jar，而不是从NFS托管。
SIGSEGV (0xb) at pc=0xb6a72295, pid=19470, tid=241171312 JRE version: 6.0_29-b11 Java VM: Java HotSpot(TM) Server VM (20.4-b02 mixed mode linux-x86 ) Problematic frame: C [libzip.so+0x5295] double+0x45 If you would like to submit a bug report, please visit: http://java.sun.com/webapps/bugreport/crash.jsp The crash happened outside the Java Virtual Machine in native code. See problematic frame for where to report the bug. --------------- THREAD --------------- Current thread (0x1044dc00): JavaThread "catalina-exec-177" daemon [_thread_in_native, id=21423, stack(0x0e5af000,0x0e600000)] siginfo:si_signo=SIGSEGV: si_errno=0, si_code=2 (SEGV_ACCERR), si_addr=0x10dfc000 Registers: EAX=0x10d00018, EBX=0xb6a7dabc, ECX=0x000fbfe6, EDX=0x00000000 ESP=0x0e5febf0, EBP=0x0e5fec18, ESI=0x0eadc098, EDI=0x10458800 EIP=0xb6a72295, EFLAGS=0x00010246, CR2=0x10dfc000 Top of Stack: (sp=0x0e5febf0) 0x0e5febf0: b7869118 00000000 0ef2e648 b6a71216 0x0e5fec00: 13d1f690 10c492b0 0000bfe1 b6a7dabc 0x0e5fec10: 10458800 0ef2e648 0e5fec48 b6a7134d 0x0e5fec20: 10458800 00000004 0e5fec48 b77b727c 0x0e5fec30: 00000007 3d4af570 ffffffff b6a7dabc 0x0e5fec40: 31fe9ad0 1044dd20 0e5feca8 b6a6f585 0x0e5fec50: 0ef2e648 00000004 00000002 00000000 0x0e5fec60: 10b59810 3d5cff58 00000002 00004114 Instructions: (pc=0xb6a72295) 0xb6a72275: 05 01 00 00 0f 86 79 03 00 00 83 fa 02 76 41 8b 0xb6a72285: 57 40 8b 4f 50 8b 47 30 8b 77 38 d3 e2 8b 4f 64 0xb6a72295: 0f b6 44 01 02 31 c2 8b 47 4c 21 c2 8b 47 2c 89 0xb6a722a5: 57 40 21 c1 8b 47 3c 0f b7 04 50 89 45 f0 66 89 Register to memory mapping: EAX=0x10d00018 is an unknown value EBX=0xb6a7dabc: in /usr/local/jdk1.6.0_29/jre/lib/i386/libzip.so at 0xb6a6d000 ECX=0x000fbfe6 is an unknown value EDX=0x00000000 is an unknown value ESP=0x0e5febf0 is pointing into the stack for thread: 0x1044dc00 EBP=0x0e5fec18 is pointing into the stack for thread: 0x1044dc00 ESI=0x0eadc098 is an unknown value EDI=0x10458800 is an unknown value Stack: [0x0e5af000,0x0e600000], sp=0x0e5febf0, free space=318k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) C [libzip.so+0x5295] double+0x45 C [libzip.so+0x434d] double+0x10d C [libzip.so+0x2585] Java_java_util_zip_Deflater_deflateBytes+0x355 J java.util.zip.Deflater.deflateBytes(J[BII)I Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) J java.util.zip.Deflater.deflateBytes(J[BII)IJ java.util.zip.GZIPOutputStream.finish()VJ org.apache.coyote.http11.Http11NioProcessor.actionInternal(Lorg/apache/coyote/ActionCode;Ljava/lang/Object;)VJ org.apache.coyote.http11.AbstractHttp11Processor.action(Lorg/apache/coyote/ActionCode;Ljava/lang/Object;)VJ org.apache.catalina.connector.Response.finishResponse()VJ org.apache.catalina.connector.CoyoteAdapter.service(Lorg/apache/coyote/Request;Lorg/apache/coyote/Response;)VJ org.apache.coyote.http11.Http11NioProcessor.process(Lorg/apache/tomcat/util/net/NioChannel;)Lorg/apache/tomcat/util/net/AbstractEndpoint$Handler$SocketState; J org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run()VJ java.util.concurrent.ThreadPoolExecutor$Worker.run()V j java.lang.Thread.run()V+11 v ~StubRoutines::call_stub 任何提示赞赏。
这是修补的类，每晚构建，需要测试它。 可以在此处找到JGZipOutputStream类： 使用jzlib创建gzip文件
JZlib可在http://www.jcraft.com/jzlib/找到
您可以通过在引导路径（ -Xbootclasspath/a:添加一个小jar或者解压缩/ jar tomcat本身来修补它。
额外的奖励是java impl。 实际上比本机代码更快。
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.coyote.http11.filters; import java.io.IOException; import java.io.OutputStream; import java.util.zip.GZIPOutputStream; import org.apache.coyote.OutputBuffer; import org.apache.coyote.Response; import org.apache.coyote.http11.OutputFilter; import org.apache.tomcat.util.buf.ByteChunk; import bestsss.util.JGZipOutputStream; import com.jcraft.jzlib.JZlib; /** * Gzip output filter. * * @author Remy Maucherat */ public class GzipOutputFilter implements OutputFilter { /** * Logger. */ protected static org.apache.juli.logging.Log log = org.apache.juli.logging.LogFactory.getLog(GzipOutputFilter.class); // ----------------------------------------------------- Instance Variables /** * Next buffer in the pipeline. */ protected OutputBuffer buffer; /** * Compression output stream. */ protected OutputStream compressionStream = null; /** * Fake internal output stream. */ protected OutputStream fakeOutputStream = new FakeOutputStream(); // --------------------------------------------------- OutputBuffer Methods /** * Write some bytes. * * @return number of bytes written by the filter */ @Override public int doWrite(ByteChunk chunk, Response res) throws IOException { if (compressionStream == null) { compressionStream = new JGZipOutputStream(fakeOutputStream, new byte[Math.min(32768, Math.max(2048, Integer.highestOneBit(chunk.getLength()-1)<<1))]); } compressionStream.write(chunk.getBytes(), chunk.getStart(), chunk.getLength()); return chunk.getLength(); } @Override public long getBytesWritten() { return buffer.getBytesWritten(); } // --------------------------------------------------- OutputFilter Methods /** * Added to allow flushing to happen for the gzip'ed outputstream */ public void flush() { if (compressionStream != null) { try { if (log.isDebugEnabled()) { log.debug("Flushing the compression stream!"); } compressionStream.flush(); } catch (IOException e) { if (log.isDebugEnabled()) { log.debug("Ignored exception while flushing gzip filter", e); } } } } /** * Some filters need additional parameters from the response. All the * necessary reading can occur in that method, as this method is called * after the response header processing is complete. */ @Override public void setResponse(Response response) { // NOOP: No need for parameters from response in this filter } /** * Set the next buffer in the filter pipeline. */ @Override public void setBuffer(OutputBuffer buffer) { this.buffer = buffer; } /** * End the current request. It is acceptable to write extra bytes using * buffer.doWrite during the execution of this method. */ @Override public long end() throws IOException { if (compressionStream == null) { compressionStream = new JGZipOutputStream(fakeOutputStream, new byte[128]); } compressionStream.close(); return ((OutputFilter) buffer).end(); } /** * Make the filter ready to process the next request. */ @Override public void recycle() { // Set compression stream to null compressionStream = null; } // ------------------------------------------- FakeOutputStream Inner Class protected class FakeOutputStream extends OutputStream { protected ByteChunk outputChunk = new ByteChunk(); protected byte[] singleByteBuffer = new byte[1]; @Override public void write(int b) throws IOException { // Shouldn't get used for good performance, but is needed for // compatibility with Sun JDK 1.4.0 singleByteBuffer[0] = (byte) (b & 0xff); outputChunk.setBytes(singleByteBuffer, 0, 1); buffer.doWrite(outputChunk, null); } @Override public void write(byte[] b, int off, int len) throws IOException { outputChunk.setBytes(b, off, len); buffer.doWrite(outputChunk, null); } @Override public void flush() throws IOException {/*NOOP*/} @Override public void close() throws IOException {/*NOOP*/} } }