Hi Vladimir, On Fri Jun 05 2020, Vladimir Oltean wrote: > Hi, > > I was testing stress-ng on an ARM64 box and I found that it can be killed instantaneously with a --hrtimers 1 test: > https://github.com/ColinIanKing/stress-ng/blob/master/stress-hrtimers.c > The console shell locks up immediately after starting the process, and I get this rcu_preempt splat after 21 seconds, > letting me know that the grace-periods kernel thread could not run: interesting. Just tested this on an ARM64 box with v5.6-rt and the stress-ng hrtimer test works fine. No lockups, cyclictest results are looking good. So maybe this is v5.7 related. Thanks, Kurt
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