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Re: utrace known bugs



On Tue, Aug 28, 2007 at 12:07:20AM -0700, Roland McGrath wrote:
> >   * unbounded utrace_engine_cache growth
> >     started from 31a9ef5cfcdbae804e3e180c158bf2352728765a,
> >     nobody knows why
> >     testcase: at the end of  http://marc.info/?l=linux-kernel&m=117128445312243&w=2
> 
> Is it correct that this only happens with CONFIG_PREEMPT=y?

I rechecked, and it appears that one needs 2 cpus for this, preemption
doesn't matter. In UP case there is no bug regardless of PREEMPT and in
SMP case there is bug, again, regardless of PREEMPT.


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