[lkml]   [2014]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
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

 \ /
  Last update: 2014-02-28 23:21    [W:0.626 / U:0.464 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site