rmid on Unix fails with Exception - maybe aftermath of JDK-8173607 ??

Daniel Fuchs daniel.fuchs at oracle.com
Thu Feb 16 14:52:39 UTC 2017 

Hi Christoph,

It looks like one of the dreaded class initialization cycle
issues.

If you look at the stack trace, you will see that
UnixNativeDispatcher.<clinit>:609
calls System.loadLibrary at line 611
which later down the road calls the
native UnixNativeDispatcher.getcwd command
from sun.nio.fs.UnixFileSystem.<init>

But at this point UnixNativeDispatcher has not
finished initializing: we're still trying to load
the nio lib...

I don't think this has anything to do with JDK-8173607.
JDK-8173607 just splitted the JMX RMI Connector out of
java.management - and rmid has nothing to do with JMX.

rmid doesn't depend on either java.management or
java.management.rmi, and I don't see anything
on the exception path that would involve either
of these modules.
So I suspect the culprit is probably elsewhere.

best regards,

-- daniel



On 16/02/17 13:53, Langer, Christoph wrote:
> Hi Daniel,
>
>
>
> when starting „rmid“ from current builds on Linux (and probably other
> Unix platforms as well) we are currently getting the exception below.
>
>
>
> It looks as if on that path libnio was not loaded and hence we’re
> getting an UnsatisfiedLinkError. In UnixNativeDispatcher.java one can
> find a static initialization block which should do that, however, it
> needs elevated access. Maybe rmid is missing a permission for that?
>
>
>
> Any thoughts?
>
>
>
> Thanks & best regards
>
> Christoph
>
>
>
>
>
> ...>/jdk9-build-dir/images/jdk/bin/rmid
>
> Exception in thread "main" java.lang.UnsatisfiedLinkError:
> sun.nio.fs.UnixNativeDispatcher.getcwd()[B
>
>         at java.base/sun.nio.fs.UnixNativeDispatcher.getcwd(Native Method)
>
>         at
> java.base/sun.nio.fs.UnixFileSystem.<init>(UnixFileSystem.java:66)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystem.<init>(LinuxFileSystem.java:39)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystemProvider.newFileSystem(LinuxFileSystemProvider.java:46)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystemProvider.newFileSystem(LinuxFileSystemProvider.java:39)
>
>         at
> java.base/sun.nio.fs.UnixFileSystemProvider.<init>(UnixFileSystemProvider.java:56)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystemProvider.<init>(LinuxFileSystemProvider.java:41)
>
>         at
> java.base/sun.nio.fs.DefaultFileSystemProvider.create(DefaultFileSystemProvider.java:41)
>
>         at
> java.base/java.io.FilePermission.<clinit>(FilePermission.java:206)
>
>         at
> java.base/java.lang.SecurityManager.checkRead(SecurityManager.java:899)
>
>         at java.base/java.io.File.exists(File.java:815)
>
>         at java.base/java.lang.ClassLoader$2.run(ClassLoader.java:2513)
>
>         at java.base/java.lang.ClassLoader$2.run(ClassLoader.java:2510)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at
> java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2509)
>
>         at
> java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2478)
>
>         at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:873)
>
>         at java.base/java.lang.System.loadLibrary(System.java:1818)
>
>         at
> java.base/sun.nio.fs.UnixNativeDispatcher$1.run(UnixNativeDispatcher.java:611)
>
>         at
> java.base/sun.nio.fs.UnixNativeDispatcher$1.run(UnixNativeDispatcher.java:609)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at
> java.base/sun.nio.fs.UnixNativeDispatcher.<clinit>(UnixNativeDispatcher.java:609)
>
>         at
> java.base/sun.nio.fs.UnixFileSystem.<init>(UnixFileSystem.java:66)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystem.<init>(LinuxFileSystem.java:39)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystemProvider.newFileSystem(LinuxFileSystemProvider.java:46)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystemProvider.newFileSystem(LinuxFileSystemProvider.java:39)
>
>         at
> java.base/sun.nio.fs.UnixFileSystemProvider.<init>(UnixFileSystemProvider.java:56)
>
>         at
> java.base/sun.nio.fs.LinuxFileSystemProvider.<init>(LinuxFileSystemProvider.java:41)
>
>         at
> java.base/sun.nio.fs.DefaultFileSystemProvider.create(DefaultFileSystemProvider.java:41)
>
>         at java.base/java.nio.file.FileSystems.<clinit>(FileSystems.java:91)
>
>         at java.base/java.nio.file.Paths.get(Paths.java:84)
>
>         at
> java.base/jdk.internal.jimage.ImageReaderFactory.<clinit>(ImageReaderFactory.java:50)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at
> java.base/sun.net.www.protocol.jrt.JavaRuntimeURLConnection.<clinit>(JavaRuntimeURLConnection.java:59)
>
>         at
> java.base/sun.net.www.protocol.jrt.Handler.openConnection(Handler.java:42)
>
>         at java.base/java.net.URL.openConnection(URL.java:1049)
>
>         at
> java.base/jdk.internal.module.SystemModuleFinder$ImageModuleReader.checkPermissionToConnect(SystemModuleFinder.java:287)
>
>         at
> java.base/jdk.internal.module.SystemModuleFinder$ImageModuleReader.<init>(SystemModuleFinder.java:296)
>
>         at
> java.base/jdk.internal.module.SystemModuleFinder$1.get(SystemModuleFinder.java:245)
>
>         at
> java.base/jdk.internal.module.SystemModuleFinder$1.get(SystemModuleFinder.java:242)
>
>         at
> java.base/jdk.internal.module.ModuleReferenceImpl.open(ModuleReferenceImpl.java:83)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader.createModuleReader(BuiltinClassLoader.java:934)
>
>         at
> java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1719)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader.moduleReaderFor(BuiltinClassLoader.java:926)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader.access$100(BuiltinClassLoader.java:92)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader$1.run(BuiltinClassLoader.java:356)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader$1.run(BuiltinClassLoader.java:351)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader.findMiscResource(BuiltinClassLoader.java:350)
>
>         at
> java.base/jdk.internal.loader.BuiltinClassLoader.findResources(BuiltinClassLoader.java:311)
>
>         at
> java.base/jdk.internal.loader.BootLoader.findResources(BootLoader.java:156)
>
>         at
> java.base/java.lang.ClassLoader.getResources(ClassLoader.java:1430)
>
>         at
> java.base/java.lang.ClassLoader.getResources(ClassLoader.java:1428)
>
>         at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1082)
>
>         at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.access$1200(ServiceLoader.java:1004)
>
>         at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator$1.run(ServiceLoader.java:1131)
>
>         at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator$1.run(ServiceLoader.java:1130)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1133)
>
>         at
> java.base/java.util.ServiceLoader$1.hasNext(ServiceLoader.java:1163)
>
>         at
> java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1258)
>
>         at
> java.base/java.nio.channels.spi.SelectorProvider.loadProviderAsService(SelectorProvider.java:122)
>
>         at
> java.base/java.nio.channels.spi.SelectorProvider.access$200(SelectorProvider.java:69)
>
>         at
> java.base/java.nio.channels.spi.SelectorProvider$1.run(SelectorProvider.java:180)
>
>         at
> java.base/java.nio.channels.spi.SelectorProvider$1.run(SelectorProvider.java:176)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at
> java.base/java.nio.channels.spi.SelectorProvider.provider(SelectorProvider.java:175)
>
>         at java.base/java.lang.System.inheritedChannel(System.java:276)
>
>         at java.rmi/sun.rmi.server.Activation$2.run(Activation.java:1960)
>
>         at java.rmi/sun.rmi.server.Activation$2.run(Activation.java:1958)
>
>         at java.base/java.security.AccessController.doPrivileged(Native
> Method)
>
>         at java.rmi/sun.rmi.server.Activation.main(Activation.java:1957)
>
>
>

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