On Tue, 26 Sep 2017, Borislav Petkov wrote: > From: Borislav Petkov <[email protected]> > > Call stack is: > > check_preemption_disabled > ? x2apic_prepare_cpu > x2apic_dead_cpu > cpuhp_invoke_callback > ? cpuhp_kick_ap_work > ? cpumask_next > _cpu_down > freeze_secondary_cpus > hibernation_snapshot > ... > > i.e., box is doing suspend-to-disk. > Signed-off-by: Borislav Petkov <[email protected]> > --- > arch/x86/kernel/apic/x2apic_cluster.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/apic/x2apic_cluster.c > b/arch/x86/kernel/apic/x2apic_cluster.c > index 3da94277140f..6050c5364bdc 100644 > --- a/arch/x86/kernel/apic/x2apic_cluster.c > +++ b/arch/x86/kernel/apic/x2apic_cluster.c > @@ -156,7 +156,7 @@ static int x2apic_dead_cpu(unsigned int dead_cpu) > { > struct cluster_mask *cmsk = per_cpu(cluster_masks, dead_cpu); > > - cpumask_clear_cpu(smp_processor_id(), &cmsk->mask); > + cpumask_clear_cpu(dead_cpu, &cmsk->mask);
Duh...... > free_cpumask_var(per_cpu(ipi_mask, dead_cpu)); > return 0; > } > -- > 2.13.0 > >
