On Fri, Jun 25, 2021 at 12:16:52PM +0200, Peter Zijlstra wrote: > You mean: CONFIG_PREEMPTION=n, what about CONFIG_PREEMPT_COUNT? > > Because if both are =n, then I don't see how that warning could trigger. > in_atomic_preempt_off() would then result in prempt_count() == 0, and > per the print above, it *is* 0. CONFIG_PREEMPTION isn't set. Also other PREEMPT related options are as under: # CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set CONFIG_PREEMPT_COUNT=y CONFIG_PREEMPT_NOTIFIERS=y CONFIG_PREEMPTIRQ_TRACEPOINTS=y # CONFIG_PREEMPTIRQ_DELAY_TEST is not set Regards, Bharata.