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https://issues.apache.org/jira/browse/LOG4NET-551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15894720#comment-15894720
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Stefan Bodewig commented on LOG4NET-551:
----------------------------------------
The fix applies to all versions that have {{ReaderWriterLockSlim}} (those
without it haven't been affected anyway. So yes, it should also apply to 4.5
and 4.6.
On the other 2.0.8 hasn't been released, yet. In order to upgrade to it, you'd
have to build log4net yourself from the current tip of the svn trunk (or the
trunk branch of the github mirror).
> LockRecursionException when using File Appenders
> ------------------------------------------------
>
> Key: LOG4NET-551
> URL: https://issues.apache.org/jira/browse/LOG4NET-551
> Project: Log4net
> Issue Type: Bug
> Affects Versions: 2.0.7
> Reporter: Matthew Lefoster
> Priority: Minor
> Fix For: 2.0.8
>
>
> I have been getting the following exception on the console:
> {quote}
> log4net:ERROR Exception while logging
> System.Threading.LockRecursionException: Recursive read lock acquisitions not
> allowed in this mode.
> at
> System.Threading.ReaderWriterLockSlim.TryEnterReadLockCore(TimeoutTracker
> timeout)
> at System.Threading.ReaderWriterLockSlim.TryEnterReadLock(TimeoutTracker
> timeout)
> at System.Threading.ReaderWriterLockSlim.EnterReadLock()
> at log4net.Util.ReaderWriterLock.AcquireReaderLock()
> at log4net.Repository.Hierarchy.Logger.CallAppenders(LoggingEvent
> loggingEvent)
> at log4net.Repository.Hierarchy.Logger.ForcedLog(Type
> callerStackBoundaryDeclaringType, Level level, Object message, Exception
> exception)
> at log4net.Repository.Hierarchy.Logger.Log(Type
> callerStackBoundaryDeclaringType, Level level, Object message, Exception
> exception)
> {quote}
> I have a number of different appenders, but this only happens when I am using
> `log4net.Appender.FileAppender`.
> Using a debugger, I was able to narrow it down to this line (I replaced curly
> brackets with square brackets because otherwise JIRA interprets them as
> macros):
> {quote}
> Logger.DebugFormat("[1] Executing SQL: [0][2][0]With parameters: [3]",
> Environment.NewLine, methodName, sql, new
> ToStringWrapper(parameters));
> {quote}
> My first thought was that ToStringWrapper() was throwing an exception or
> generating another logging call. But If I put breakpoints at the log call and
> at the first line of ToStringWrapper.ToString, the exception will show up in
> the console between those two points.
> Oddly enough, if I "step into" the logging call instead of just "continuing"
> and letting the breakpoints handle it, no exception happens.
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