7u45 webstart中的新死鎖錯誤？

來自java 7u45的樂趣不斷給予。這一次，它是webstart內部的一個死鎖。這種情況發生的非常一致（每次）啓動一個大型應用程序（〜100罐）。7u45 webstart中的新死鎖錯誤？

是否有其他人遇到這種情況或知道任何解決方法？除了恢復到1.7.0_40？

感謝，

Found one Java-level deadlock: 
============================= 
"Java Web Start Main Thread": 
    waiting to lock monitor 0x066368bc (object 0x29e65428, a java.lang.Class), 
    which is held by "Finalizer" 
"Finalizer": 
    waiting to lock monitor 0x00dbc954 (object 0x2a1b52b0, a com.sun.deploy.cache.CacheEntry), 
    which is held by "Java Web Start Main Thread" 

Java stack information for the threads listed above: 
=================================================== 
"Java Web Start Main Thread": 
    at com.sun.deploy.cache.MemoryCache.getLoadedResource(Unknown Source) 
    - waiting to lock <0x29e65428> (a java.lang.Class for com.sun.deploy.cache.MemoryCache) 
    at com.sun.deploy.cache.CachedJarFile.getCacheEntry(Unknown Source) 
    - locked <0x24810058> (a com.sun.deploy.cache.CachedJarFile) 
    at com.sun.deploy.cache.CachedJarFile.getManifest(Unknown Source) 
    - locked <0x24810058> (a com.sun.deploy.cache.CachedJarFile) 
    at com.sun.deploy.util.JarUtil.isBlobSigned(Unknown Source) 
    at com.sun.deploy.cache.CacheEntry.getJarFile(Unknown Source) 
    - locked <0x2a1b52b0> (a com.sun.deploy.cache.CacheEntry) 
    at com.sun.deploy.security.DeployManifestChecker.verify(Unknown Source) 
    at com.sun.javaws.security.AppPolicy.grantUnrestrictedAccess(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source) 
    at com.sun.javaws.Launcher.prepareResources(Unknown Source) 
    at com.sun.javaws.Launcher.prepareAllResources(Unknown Source) 
    at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source) 
    at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source) 
    at com.sun.javaws.Launcher.launch(Unknown Source) 
    at com.sun.javaws.Main.launchApp(Unknown Source) 
    at com.sun.javaws.Main.continueInSecureThread(Unknown Source) 
    at com.sun.javaws.Main.access$000(Unknown Source) 
    at com.sun.javaws.Main$1.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
"Finalizer": 
    at com.sun.deploy.cache.CacheEntry.storageFilesExist(Unknown Source) 
    - waiting to lock <0x2a1b52b0> (a com.sun.deploy.cache.CacheEntry) 
    at com.sun.deploy.cache.MemoryCache.validateResource(Unknown Source) 
    at com.sun.deploy.cache.MemoryCache.getLoadedResource(Unknown Source) 
    - locked <0x29e65428> (a java.lang.Class for com.sun.deploy.cache.MemoryCache) 
    at com.sun.deploy.cache.CachedJarFile.isReferencedTo(Unknown Source) 
    at com.sun.deploy.cache.CachedJarFile.close(Unknown Source) 
    at java.util.zip.ZipFile.finalize(Unknown Source) 
    at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method) 
    at java.lang.ref.Finalizer.runFinalizer(Unknown Source) 
    at java.lang.ref.Finalizer.access$100(Unknown Source) 
    at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source) 

Found 1 deadlock.

來源

2013-10-21 Chris Holt

如果您發現JVM/JRE/JDK錯誤，請將其報告給Oracle。 http://www.oracle.com/technetwork/java/javase/bugreports-140511.html –

我打算這樣做，但oracle對bug報告的反饋只是「謝謝」。沒有反應，而且一旦他們「接受」它甚至不能看到該錯誤。我打算再捅一點，看看我能否在7月40日到7月45日之間找到他們在deploy.jar中更改的內容。 –

該錯誤來自於在7u40和7u45之間的deploy.jar的CacheEntry類中的getJarFile（）中添加的新代碼塊。我現在提交了這個bug。幸運的是，也許他們會公開bug。（你在聽Larry嗎？） –

我在評論中提到的錯誤報告已被接受。

儘管如此，它的ID看起來像是改變了它的一部分。它從JI-名稱空間移動到JDK-名稱空間：https://bugs.openjdk.java.net/browse/JI-9007571現在重定向到https://bugs.openjdk.java.net/browse/JDK-8027029。這個問題現在也可以在http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8027029看到。

該修復似乎正在討論列入7u51，將在1月份到期。

我們的棧跟蹤是相似的 - 死鎖本身看起來是相同的。在我們的例子中，我們在頁面中同時加載了兩個applet。

"thread applet-cl.applet.TutorApplet-2" prio=4 tid=0x04f21000 nid=0x528 waiting for monitor entry [0x0652f000] 
    java.lang.Thread.State: BLOCKED (on object monitor) 
    at com.sun.deploy.cache.MemoryCache.getLoadedResource(Unknown Source) 
    - waiting to lock <0x29d288b8> (a java.lang.Class for com.sun.deploy.cache.MemoryCache) 
    at com.sun.deploy.cache.CachedJarFile.getCacheEntry(Unknown Source) 
    - locked <0x247a4f90> (a com.sun.deploy.cache.CachedJarFile) 
    at com.sun.deploy.cache.CachedJarFile.getManifest(Unknown Source) 
    - locked <0x247a4f90> (a com.sun.deploy.cache.CachedJarFile) 
    at com.sun.deploy.util.JarUtil.isBlobSigned(Unknown Source) 
    at com.sun.deploy.cache.CacheEntry.getJarFile(Unknown Source) 
    - locked <0x29eccc00> (a com.sun.deploy.cache.CacheEntry) 
    at com.sun.javaws.security.SigningInfo.check(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source) 
    at sun.plugin2.applet.JNLP2Manager.prepareLaunchFile(Unknown Source) 
    at sun.plugin2.applet.JNLP2Manager.loadJarFiles(Unknown Source) 
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 

"thread applet-cl.applet.TTSApplet-1" prio=4 tid=0x04f1f800 nid=0xa40 waiting for monitor entry [0x0600f000] 
    java.lang.Thread.State: BLOCKED (on object monitor) 
    at com.sun.deploy.cache.CacheEntry.storageFilesExist(Unknown Source) 
    - waiting to lock <0x29eccc00> (a com.sun.deploy.cache.CacheEntry) 
    at com.sun.deploy.cache.MemoryCache.validateResource(Unknown Source) 
    at com.sun.deploy.cache.MemoryCache.getLoadedResource(Unknown Source) 
    - locked <0x29d288b8> (a java.lang.Class for com.sun.deploy.cache.MemoryCache) 
    at com.sun.deploy.cache.MemoryCache.getLoadedResource(Unknown Source) 
    - locked <0x29d288b8> (a java.lang.Class for com.sun.deploy.cache.MemoryCache) 
    at com.sun.deploy.cache.Cache.getCacheEntry(Unknown Source) 
    at com.sun.deploy.cache.Cache.getCacheEntry(Unknown Source) 
    at com.sun.deploy.cache.Cache.getCachedResourceFilePath(Unknown Source) 
    at com.sun.deploy.cache.ResourceProviderImpl.getCachedResourceFilePath(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.getSignedJNLPBits(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.getSignedJNLPFile(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedLaunchDescHelper(Unknown Source) 
    at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedLaunchDesc(Unknown Source) 
    at sun.plugin2.applet.JNLP2Manager.prepareLaunchFile(Unknown Source) 
    at sun.plugin2.applet.JNLP2Manager.loadJarFiles(Unknown Source) 
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source)

來源

2013-11-01 15:29:43

7u45 webstart中的新死鎖錯誤？

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