On Thu, Apr 6, 2023 at 3:18 PM Mark Thomas <[email protected]> wrote:
>
> On 06/04/2023 14:14, [email protected] wrote:
> > This is an automated email from the ASF dual-hosted git repository.
> >
> > remm pushed a commit to branch main
> > in repository https://gitbox.apache.org/repos/asf/tomcat.git
> >
> >
> > The following commit(s) were added to refs/heads/main by this push:
> > new 973ef49b4f Initialize Random during server initialization
> > 973ef49b4f is described below
> >
> > commit 973ef49b4f4384350e052400de372e9b136e72a3
> > Author: remm <[email protected]>
> > AuthorDate: Thu Apr 6 15:13:32 2023 +0200
> >
> > Initialize Random during server initialization
> >
> > BZ66554, causing possible thread creation by the JVM using the context
> > of the webapp.
>
> Looks like this might belong in the JreMemoryLeakPreventionListener ?
For some reason, I forgot about that. Also, Random doesn't actually
use SeedGenerator (SecureRandom does). So I really need to put this in
JreMemoryLeakPreventionListener and disable it by default (no need to
consume precious random bytes for no reason ;) ).
Remy
> Mark
>
>
> > ---
> > java/org/apache/catalina/core/StandardServer.java | 5 +++++
> > webapps/docs/changelog.xml | 5 +++++
> > 2 files changed, 10 insertions(+)
> >
> > diff --git a/java/org/apache/catalina/core/StandardServer.java
> > b/java/org/apache/catalina/core/StandardServer.java
> > index eb5e91e932..720c639380 100644
> > --- a/java/org/apache/catalina/core/StandardServer.java
> > +++ b/java/org/apache/catalina/core/StandardServer.java
> > @@ -980,6 +980,11 @@ public final class StandardServer extends
> > LifecycleMBeanBase implements Server {
> >
> > reconfigureUtilityExecutor(getUtilityThreadsInternal(utilityThreads));
> > register(utilityExecutor, "type=UtilityExecutor");
> >
> > + // Initialize random generation of the JVM, as some platforms use
> > + // a thread which could end up being associated with a webapp
> > rather
> > + // than the container.
> > + (new Random()).nextInt();
> > +
> > // Register global String cache
> > // Note although the cache is global, if there are multiple
> > Servers
> > // present in the JVM (may happen when embedding) then the same
> > cache
> > diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
> > index 3094946c56..111b9c4427 100644
> > --- a/webapps/docs/changelog.xml
> > +++ b/webapps/docs/changelog.xml
> > @@ -184,6 +184,11 @@
> > <bug>66543</bug>: Give
> > <code>StandardContext#fireRequestDestroyEvent</code>
> > its own log message. (fschumacher)
> > </fix>
> > + <fix>
> > + <bug>66554</bug>: Initialize Random during server initialization to
> > + avoid possible JVM thread creation in the webapp context on some
> > + platforms. (remm)
> > + </fix>
> > </changelog>
> > </subsection>
> > <subsection name="Coyote">
> >
> >
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