JDK 11 & Netty 4.1.45: PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module...

Expected behavior

Startup normally, not throws an exception (debug level).

Actual behavior

Startup throws an exception (debug level).

Steps to reproduce

Startup throws an exception (debug level).

Minimal yet complete reproducer code (or URL to code)

01:47:25.254 [main] DEBUG io.netty.util.internal.PlatformDependent0 - direct buffer constructor: unavailable
java.lang.UnsupportedOperationException: Reflective setAccessible(true) disabled
	at io.netty.util.internal.ReflectionUtil.trySetAccessible(ReflectionUtil.java:31)
	at io.netty.util.internal.PlatformDependent0$4.run(PlatformDependent0.java:225)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:219)
	at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:273)
	at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92)
	at io.netty.channel.nio.NioEventLoop.newTaskQueue0(NioEventLoop.java:279)
	at io.netty.channel.nio.NioEventLoop.newTaskQueue(NioEventLoop.java:150)
	at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:138)
	at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:146)
	at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:37)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58)
	at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:52)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:96)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:91)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:72)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:44)
	at xxx.Server.main(Server.java:19)
01:47:25.257 [main] DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.Bits.unaligned: available, true
01:47:25.258 [main] DEBUG io.netty.util.internal.PlatformDependent0 - jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable
java.lang.IllegalAccessException: class io.netty.util.internal.PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module @3c153a1
	at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:361)
	at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:591)
	at java.base/java.lang.reflect.Method.invoke(Method.java:558)
	at io.netty.util.internal.PlatformDependent0$6.run(PlatformDependent0.java:335)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:326)
	at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:273)
	at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92)
	at io.netty.channel.nio.NioEventLoop.newTaskQueue0(NioEventLoop.java:279)
	at io.netty.channel.nio.NioEventLoop.newTaskQueue(NioEventLoop.java:150)
	at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:138)
	at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:146)
	at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:37)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58)
	at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:52)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:96)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:91)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:72)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
	at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:44)
	at xxx.Server.main(Server.java:19)
01:47:25.258 [main] DEBUG io.netty.util.internal.PlatformDependent0 - java.nio.DirectByteBuffer.<init>(long, int): unavailable
01:47:25.258 [main] DEBUG io.netty.util.internal.PlatformDependent - sun.misc.Unsafe: available

Netty version:

4.1.45.Final

JVM version (e.g. java -version)

java version “11.0.6” 2020-01-14 LTS Java™ SE Runtime Environment 18.9 (build 11.0.6+8-LTS) Java HotSpot™ 64-Bit Server VM 18.9 (build 11.0.6+8-LTS, mixed mode)

OS version (e.g. uname -a)

Microsoft Windows [Version 10.0.18363.657]

[johnou]

Set the log level for io.netty to warn or info.

[doom369]

@normanmaurer those errors are posted and reported, again and again, maybe it would make sense to remove the stack traces and just provide a meaningful message instead? This would decrease the noise from similar reports.