题
我的 JVM 崩溃了,hs_err 文件显示它在尝试加载类时崩溃了。特别是在尝试 memcpy ([libc.so.6+0x6aa2c] memcpy+0x1c) 时。我查看了 .class 文件并能够确定正在加载什么类。
但谁能告诉我什么可能导致这种情况,或者我如何确定更多有关原因的信息?如果 JVM 内存不足,它不会抛出错误。任何见解都将受到高度赞赏。
我包含了 hs_err 文件的摘录。
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGBUS (0x7) at pc=0x005aba2c, pid=20841, tid=2427227056
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0_02-b05 mixed mode)
# Problematic frame:
# C [libc.so.6+0x6aa2c] memcpy+0x1c
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#
--------------- T H R E A D ---------------
Current thread (0x90d0dc00): JavaThread "ORDERHANDLER" [_thread_in_native, id=20881]
siginfo:si_signo=7, si_errno=0, si_code=2, si_addr=0x915e3000
Registers:
EAX=0x91218298, EBX=0xb7f2e71c, ECX=0x0000079b, EDX=0x915dfef2
ESP=0x90ac6a34, EBP=0x90ac6a60, ESI=0x915e2ffd, EDI=0x914f0a0d
EIP=0x005aba2c, CR2=0x915e3000, EFLAGS=0x00010206
Top of Stack: (sp=0x90ac6a34)
0x90ac6a34: b7f29d4b 914ed930 915dff20 00004f49
0x90ac6a44: 082e7bc4 00006f6f 00004243 00004f49
0x90ac6a54: b7f2e71c 080e3e54 00000000 90ac6a90
0x90ac6a64: b7f29fbb 080e3b00 080e3e54 00000000
0x90ac6a74: 00000000 90d0dc00 00000000 d68dd1b6
0x90ac6a84: b7f2e71c 90ac6ad8 90d0dcec 90ac6f00
0x90ac6a94: b7f21169 080e3b00 90ac6ad8 0000002b
0x90ac6aa4: 0000002b 90ac6ad8 00000008 00000000
Instructions: (pc=0x005aba2c)
0x005aba1c: 8b 74 24 08 fc d1 e9 73 01 a4 d1 e9 73 02 66 a5
0x005aba2c: f3 a5 89 c7 89 d6 8b 44 24 04 c3 90 90 90 90 90
Stack: [0x90a78000,0x90ac9000), sp=0x90ac6a34, free space=314k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libc.so.6+0x6aa2c] memcpy+0x1c
C [libzip.so+0xbfbb] ZIP_GetEntry+0x10b
C [libzip.so+0x3169] Java_java_util_zip_ZipFile_getEntry+0xc9
J java.util.zip.ZipFile.getEntry(JLjava/lang/String;Z)J
J java.util.zip.ZipFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry;
J java.util.jar.JarFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry;
J sun.misc.URLClassPath$JarLoader.getResource(Ljava/lang/String;Z)Lsun/misc/Resource;
J sun.misc.URLClassPath.getResource(Ljava/lang/String;Z)Lsun/misc/Resource;
J java.net.URLClassLoader$1.run()Ljava/lang/Object;
v ~StubRoutines::call_stub
V [libjvm.so+0x20bbbd]
V [libjvm.so+0x30a6b8]
V [libjvm.so+0x20ba50]
V [libjvm.so+0x26190b]
C [libjava.so+0xaa5c] Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedExceptionAction_2Ljava_security_AccessControlContext_2+0x3
c
J java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;
J java.net.URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;
J java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
J sun.misc.Launcher$AppClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
j java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+3
j java.lang.ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;+2
v ~StubRoutines::call_stub
V [libjvm.so+0x20bbbd]
V [libjvm.so+0x30a6b8]
V [libjvm.so+0x20b6e1]
V [libjvm.so+0x20b7ca]
V [libjvm.so+0x367621]
V [libjvm.so+0x3662a5]
V [libjvm.so+0x365357]
V [libjvm.so+0x365112]
V [libjvm.so+0x1adb03]
V [libjvm.so+0x1aeb32]
V [libjvm.so+0x2d75cb]
V [libjvm.so+0x2d8a94]
V [libjvm.so+0x2d8a17]
V [libjvm.so+0x1fe7f8]
j com.aqua.foms.book.OrderHandler.handleNewOrder(Lcom/aqua/NmsApi/OrderMap;Lcom/aqua/api/AtsMessage;)V+221
j com.aqua.foms.book.FMSNewOrderTask.execute()V+12
j com.aqua.api.EEDefaultWorkerThread.run()V+96
v ~StubRoutines::call_stub
V [libjvm.so+0x20bbbd]
V [libjvm.so+0x30a6b8]
V [libjvm.so+0x20b4d0]
V [libjvm.so+0x20b55d]
V [libjvm.so+0x27b795]
V [libjvm.so+0x383ef0]
V [libjvm.so+0x30b5a9]
C [libpthread.so.0+0x5371]
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
J java.util.zip.ZipFile.getEntry(JLjava/lang/String;Z)J
J java.util.zip.ZipFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry;
J java.util.jar.JarFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry;
J sun.misc.URLClassPath$JarLoader.getResource(Ljava/lang/String;Z)Lsun/misc/Resource;
J sun.misc.URLClassPath.getResource(Ljava/lang/String;Z)Lsun/misc/Resource;
J java.net.URLClassLoader$1.run()Ljava/lang/Object;
v ~StubRoutines::call_stub
J java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;
J java.net.URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;
J java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
J sun.misc.Launcher$AppClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
j java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+3
j java.lang.ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;+2
v ~StubRoutines::call_stub
j com.aqua.foms.book.OrderHandler.handleNewOrder(Lcom/aqua/NmsApi/OrderMap;Lcom/aqua/api/AtsMessage;)V+221
j com.aqua.foms.book.FMSNewOrderTask.execute()V+12
j com.aqua.api.EEDefaultWorkerThread.run()V+96
v ~StubRoutines::call_stub
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x080c9c00 JavaThread "pool-1-thread-3" [_thread_blocked, id=18725]
0x0824f800 JavaThread "pool-1-thread-2" [_thread_blocked, id=13693]
0x91217c00 JavaThread "AquaSchedulerService_7" daemon [_thread_blocked, id=23675]
0x91215c00 JavaThread "AquaSchedulerService_6" daemon [_thread_blocked, id=23001]
0x91215400 JavaThread "AquaSchedulerService_5" daemon [_thread_blocked, id=22759]
0x91213400 JavaThread "AquaSchedulerService_4" daemon [_thread_blocked, id=22410]
0x91212c00 JavaThread "AquaSchedulerService_3" daemon [_thread_blocked, id=22262]
0x08316400 JavaThread "pool-1-thread-1" [_thread_blocked, id=22260]
0x0827d000 JavaThread "JmsConn_1_sender_0" daemon [_thread_blocked, id=21196]
0x90d0cc00 JavaThread "Timer-0" [_thread_blocked, id=20882]
=>0x90d0dc00 JavaThread "ORDERHANDLER" [_thread_in_native, id=20881]
0x90d0d400 JavaThread "TradeInviteMonitor" [_thread_blocked, id=20880]
0x90d09c00 JavaThread "ROUTERT" [_thread_blocked, id=20878]
0x90d09000 JavaThread "TIBCO EMS Session Dispatcher (33197)" [_thread_blocked, id=20877]
0x08310800 JavaThread "DORDERHANDLER" [_thread_blocked, id=20874]
0x90d01c00 JavaThread "Thread-12" daemon [_thread_blocked, id=20873]
0x90d03000 JavaThread "Thread-11" daemon [_thread_in_native, id=20872]
0x082e1c00 JavaThread "DELAYEDORDMON" [_thread_blocked, id=20871]
0x082e8000 JavaThread "DBUPD" [_thread_blocked, id=20870]
0x914e5000 JavaThread "pool-2-thread-1" [_thread_blocked, id=20869]
0x914e3c00 JavaThread "StatusStatsEventDispatcherThread" [_thread_blocked, id=20868]
0x082c8400 JavaThread "TimerQueue" daemon [_thread_blocked, id=20866]
0x082ca000 JavaThread "MDATATHREAD" [_thread_blocked, id=20865]
0x082c9400 JavaThread "AquaSchedulerService_2" daemon [_thread_blocked, id=20864]
0x9122b000 JavaThread "DestroyJavaVM" [_thread_blocked, id=20843]
0x91200800 JavaThread "FirmMatchingServer" [_thread_blocked, id=20863]
0x914de800 JavaThread "TIBCO EMS TCPLink Reader (32084)" daemon [_thread_in_native, id=20861]
0x9122a400 JavaThread "TIBCO EMS Connections Pinger" daemon [_thread_blocked, id=20859]
0x914d4000 JavaThread "WDISTQ" [_thread_blocked, id=20858]
0x9121f400 JavaThread "JmsConn_1_connector_0" daemon [_thread_blocked, id=20857]
0x914d8000 JavaThread "JmsConn_1_receiver_0" daemon [_thread_blocked, id=20856]
0x9149ac00 JavaThread "AquaSchedulerService_1" daemon [_thread_blocked, id=20855]
0x9149b400 JavaThread "AquaSchedulerService_0" daemon [_thread_blocked, id=20854]
0x9142a000 JavaThread "MySQL Statement Cancellation Timer" daemon [_thread_blocked, id=20852]
0x91425c00 JavaThread "Dispatcher-Thread-0" daemon [_thread_blocked, id=20851]
0x080bf800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=20849]
0x080bdc00 JavaThread "CompilerThread0" daemon [_thread_blocked, id=20848]
0x080bcc00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=20847]
0x080a9800 JavaThread "Finalizer" daemon [_thread_blocked, id=20846]
0x080a8800 JavaThread "Reference Handler" daemon [_thread_blocked, id=20845]
Other Threads:
0x080a5400 VMThread [id=20844]
0x080c1000 WatcherThread [id=20850]
VM state:not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
解决方案
我们已经看到了类似的错误。我们目前犯罪嫌疑人被重写(通过升级的过程),而进程正在运行jar文件。
其他提示
答1是正确的。 java.util.zip的执行。*是错误的。
如果您更换一个Java程序目前拥有“开放”(已缓存的zip文件/ jar文件对象)一个zip / jar文件,它会用它从原来的文件中读取缓存表的目次(TOC)的数据,并会尝试和使用,在被替换的文件解压数据。充气代码并不健壮,并且当与错误数据呈现将彻底崩溃。
普通UNIX程序保持打开的文件,当他们与他们的合作。如果您覆盖文件,使用它的程序仍然可以访问原来的它打开,凭借开放的文件描述符的。
的OpenJDK的java.util.zip。*实现选择不保留文件描述符打开ZIP / JAR文件。这其中的一个原因可能是Java的往往是数以百计的jar文件在类路径中调用,设计者不想使用数百文件描述符对单独的jar文件,留下没有留给程序本身。于是,他们立即关闭文件描述符,因为他们读过的内容JAR / ZIP表,永远无法访问到原来的jar / zip文件,应其内容的变化。
无论出于何种原因,ZipFile中不会或不能告诉一个zip / jar文件已经改变。如果有,它可以重新读取TOC或抛出某种错误的,如果这是不可能的。
此外,即使TOC仍然有效,这是一个问题,即在错误的数据充气崩溃。如果表中,内容的ZIP是有效的,但瘪数据流是故意错了?
下面是证明java.util.zip测试程序。*不保留文件描述符打开ZIP / JAR文件,并没有检测到的zip文件已经改变了。
import java.util.zip.*;
import java.io.*;
public class ZipCrashTest {
public static void main(String args[]) throws Exception {
// create some test data
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < 100000; i++) sb.append("Hello, World\n");
final byte[] data = sb.toString().getBytes();
// create a zip file
try (ZipOutputStream zo = new ZipOutputStream(new FileOutputStream("test1.zip"))) {
zo.putNextEntry(new ZipEntry("world.txt")); zo.write(data, 0, data.length); zo.closeEntry();
zo.putNextEntry(new ZipEntry("hello.txt")); zo.write(data, 0, data.length); zo.closeEntry();
}
// create a second valid zip file, but with different contents
try (ZipOutputStream zo = new ZipOutputStream(new FileOutputStream("test2.zip"))) {
zo.putNextEntry(new ZipEntry("hello.txt")); zo.write(data, 0, data.length); zo.closeEntry();
zo.putNextEntry(new ZipEntry("world.txt")); zo.write(data, 0, data.length); zo.closeEntry();
}
// open the zip file
final ZipFile zf = new ZipFile("test1.zip");
// read the first file from it
try (InputStream is = zf.getInputStream(zf.getEntry("hello.txt"))) {
while (is.read() != -1) { /* do nothing with the data */ }
}
// replace the contents of test1.zip with the different-but-still-valid test2.zip
Runtime.getRuntime().exec("cp test2.zip test1.zip");
// read another entry from test1.zip: it does not detect that the file has changed.
// the program will crash here
try (InputStream is = zf.getInputStream(zf.getEntry("world.txt"))) {
while (is.read() != -1) { /* do nothing */ }
}
}
}
运行这个程序应该给你一个JVM崩溃:
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGBUS (0x7) at pc=0x00007fb0fbbeef72, pid=4140, tid=140398238095104
...
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libzip.so+0x4f72] Java_java_util_zip_ZipFile_getZipMessage+0x1132
C [libzip.so+0x5d7f] ZIP_GetEntry+0xcf
C [libzip.so+0x3904] Java_java_util_zip_ZipFile_getEntry+0xb4
j java.util.zip.ZipFile.getEntry(J[BZ)J+0
j java.util.zip.ZipFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry;+38
j ZipCrashTest.main([Ljava/lang/String;)V+476
提出了对JVM这样做的主要错误是 JDK-4425695:更新罐文件崩溃运行的程序的。
RFE 6929479:添加系统属性sun.zip.disableMemoryMapping禁用在的ZipFile MMAP使用实现了JDK7系统属性 - sun.zip.disableMemoryMapping
- 这你可以作为一种解决方法使用
问题是压缩/ JAR文件被覆盖而在使用中。 对于ZIP文件格式OpenJDK的代码是在本地C代码中的任何条目查找,创作需要昂贵的JNI调用的多个来回。 目前本机C实现代码使用mmap中央目录表是虚拟机崩溃的风险很大,当底层的jar文件被新的内容覆盖,同时它仍然被其他ZipFile的映射,这是发生了什么。使用 - Dsun.zip.disableMemoryMapping =真就能解决问题,
JDK9早期访问版本是可用的,其具有用于该溶液中。
检查原始发行 https://bugs.openjdk.java.net/browse其已被固定在9次早期访问/ JDK-8142508 的建立97。
除了普通的ol。JVM 中的错误(升级到最新版本并希望它不会再次发生) - 或一些错误 3.使用 JNI 的派对库,还有另外 2 个“有趣”的事情可能会导致这种情况。
硬件故障 - 坏的 RAM 通常是一个很好的候选者,损坏的文件系统也可能导致片状驱动器也可能是罪魁祸首。
如果您在 Solaris 上运行,如果在 JVM 映射 jar/class 文件的情况下,当 JVM 需要访问它时,class/jar 文件以某种方式被截断,您可能会收到 SIGBUS 错误。
我不知道你是否已经解决了这个问题,因为我遇到了一模一样的问题。我只使用MMAP到64KB文件映射到存储器中,并且使用memcpy将数据从缓冲器复制到/。当我使用JNI或当我使用JNA发生同样的错误无论是。我是一个有经验的程序员JNI多年来,我正好在一个纯粹的C程序,它工作得很好,实现了相同的逻辑。
我假定这是一个JDK的错误,这陷阱一些特别兴趣小组。但我真的没有时间去把它挖出来了。现在我决定放弃这一做法,并尝试其他的方式做一些我想做的事。
如果您有兴趣,为什么我这样做,我只是想实现JNI线程安全的内存映射文件。因为在JDK的实现,位置是在字节缓冲区一个全局变量(从FileChannel映射)。我只是想用一个实例MemoryMappedBuffer访问中,我在C ++程序已经做了多线程的内容。
顺便说一句,我使用JDK 7在Mac OS X 10.10。