ThrowableProxyHelper fails if a class in logged stack trace throws java.lang.Error from initializer

[jaumegras]

Description

When the Logger attempts to log a message with an exception stack trace, it uses the ThrowableProxyHelper class to introspect classes in the stack trace frames.

If the class sun.reflect.misc.Trampoline is in the stack trace, the introspection performed by ThrowableProxyHelper will fail causing a java.lang.Error to be thrown by the Logger call.

The sun.reflect.misc.Trampoline class is used by the sun.reflect.misc.MethodUtil class to perform reflection-based method invocations. MethodUtil is widely used by libraries to perform method invocations. I've encountered this problem when invoking methods over JMX.

Have there been any changes? The same bug LOG4J2-832 was reported and fixed for version 2.1.

Configuration

Version: 2.23.1

Operating system: Oracle Linux Server 9.4

JDK: 11.0.23 2024-04-16 LTS

Logs

org.apache.logging.log4j.core.appender.AppenderLoggingException: java.lang.Error: Trampoline must not be defined by the bootstrap classloader
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:164)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:133)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:124)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:88)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:705)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:663)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:639)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:575)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:92)
at org.apache.logging.log4j.core.Logger.log(Logger.java:169)
at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2906)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2859)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2841)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2620)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:2567)
at org.apache.logging.log4j.spi.AbstractLogger.error(AbstractLogger.java:808)
at com.xxx.xxx.xxx.xxx.clients.migration.MainKt.main(Main.kt:42)
Caused by: java.lang.Error: Trampoline must not be defined by the bootstrap classloader
at java.base/sun.reflect.misc.Trampoline.(MethodUtil.java:51)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398)
at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:207)
at org.apache.logging.log4j.core.impl.ThrowableProxyHelper.loadClass(ThrowableProxyHelper.java:213)
at org.apache.logging.log4j.core.impl.ThrowableProxyHelper.toExtendedStackTrace(ThrowableProxyHelper.java:112)
at org.apache.logging.log4j.core.impl.ThrowableProxy.(ThrowableProxy.java:144)
at org.apache.logging.log4j.core.impl.ThrowableProxy.(ThrowableProxy.java:149)
at org.apache.logging.log4j.core.impl.ThrowableProxy.(ThrowableProxy.java:118)
at org.apache.logging.log4j.core.impl.ThrowableProxy.(ThrowableProxy.java:96)
at org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy(Log4jLogEvent.java:818)
at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:63)
at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:44)
at org.apache.logging.log4j.core.layout.PatternLayout$PatternFormatterPatternSerializer.toSerializable(PatternLayout.java:397)
at org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:252)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:238)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:58)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:227)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:220)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:211)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:160)
... 16 more

[vy]

@jaumegras, in the upcoming 2.25.0 release, ThrowableProxy et al. will be deprecated and not used anymore. Would you mind checking against 2.25.0-SNAPSHOT (see Using snapshots page) and reporting us the outcome, please?

[jaumegras]

@vy , checking it against a 4.2.5-SNAPSHOT does not happen the problem. Could you tell me if there is a release date for this release? Thank you very much

[vy]

@jaumegras, thanks for the confirmation. We don't have a concrete date for the 2.25.0 release, I guess it should happen in a month or two.

[vy]

Fixed by #2691.