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SubjectRe: perf_fuzzer compiled for x32 causes reboot
On Fri, Feb 28, 2014 at 10:27:00PM +0100, Peter Zijlstra wrote:
> On Fri, Feb 28, 2014 at 01:17:33PM -0800, Paul E. McKenney wrote:
> > This code isn't running in idle context is it? If so, RCU will happily
> > free out from under it. CONFIG_PROVE_RCU should detect this sort of thing,
> > though.
>
> Well, interrupts/NMIs can happen when idle, but the interrupt/NMI
> entry code deals with the idle state AFAIK.

Yep, rcu_irq_enter() and rcu_nmi_enter() deal with that. More worried
about this being code invoked from some energy-efficiency driver or
another within the idle loop.

Thanx, Paul



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