[jboss-jira] [JBoss JIRA] (JGRP-1869) TP.registerProbeHandler not thread safe

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253284#comment-13253284 ] 

RH Bugzilla Integration commented on JGRP-1869:
-----------------------------------------------

Vladimir Dosoudil <dosoudil at redhat.com> changed the Status of [bug 1336088|https://bugzilla.redhat.com/show_bug.cgi?id=1336088] from MODIFIED to ON_QA

> TP.registerProbeHandler not thread safe
> ---------------------------------------
>
>                 Key: JGRP-1869
>                 URL: https://issues.jboss.org/browse/JGRP-1869
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 3.2.12
>            Reporter: Dennis Reed
>            Assignee: Bela Ban
>            Priority: Minor
>             Fix For: 3.5
>
>
> TP.registerProbeHandlers is not thread safe since it modifies preregistered_probe_handlers outside of any synchronization.
> If a thread calls this method while another thread is inside startDiagnostics (which can happen easily with a shared transport), it can cause a NullPointerException when startDiagnostics is looping through preregistered_probe_handlers.
> Access to preregistered_probe_handlers should be synchronized.



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