Re: [BUG] 2.6.12-rc3: unkillable java process in TASK_RUNNING on AMD64

[Andrew Morton <akpm@osdl.org>]

"Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>
> Hi,
> 
> I'm having a problem with 2.6.12-rc3 and the Java VM (from SuSE 9.2)
> on AMD64.  Namely, after trying to open a web page containing a Java
> applet, my browser starts a java process that takes almost 100% of the CPU
> (system load, according to gkrellm) and cannot be killed (even by root,
> although it executes with a non-root UID).  Apparently, it is in TASK_RUNNING
> (according to ps).
> 
> The problem is 100% reproducible (it is enough to visit
> http://java.sun.com/docs/books/tutorial/getStarted/index.html to trigger it)
> and it does not depend on the web browser used.
> 
> The Java JRE version is:
> 
> java version "1.4.2_06"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_06-b03)
> Java HotSpot(TM) Client VM (build 1.4.2_06-b03, mixed mode)
> 
> (I guess it's 32-bit, but I'm not quite sure) and I've installed it from the
> SuSE 9.2 RPM.
> 
> It really is a show stopper to me, so please advise.

Where is it running?

You can tell this from a kernel profile, or by using sysrq-P five or ten
times then looking at the output.