Here is a deeper log, CPU3 only:
illegal-1091 [003] d.... 112.407127: da_event_sts: can_sched x
irq_disable -> cant_sched
illegal-1091 [003] d.... 112.407163: da_event_sts: cant_sched x
irq_enable -> can_sched (final)
illegal-1091 [003] d.... 112.407177: da_event_sts: can_sched x
irq_disable -> cant_sched
illegal-1091 [003] d.... 112.407186: da_event_sts: cant_sched x
irq_enable -> can_sched (final)
illegal-1091 [003] d.... 112.407196: da_event_sts: can_sched x
irq_disable -> cant_sched
illegal-1091 [003] d.... 112.407203: da_event_sts: cant_sched x
irq_enable -> can_sched (final)
illegal-1091 [003] d.... 112.407212: da_event_sts: can_sched x
irq_disable -> cant_sched
illegal-1091 [003] d.... 112.407218: da_event_sts: cant_sched x
irq_enable -> can_sched (final)
illegal-1091 [003] d.... 112.407227: da_event_sts: can_sched x
irq_disable -> cant_sched
illegal-1091 [003] d.... 112.407234: da_event_sts: cant_sched x
irq_enable -> can_sched (final)
illegal-1091 [003] d.... 112.407254: da_event_sts: can_sched x
irq_disable -> cant_sched
illegal-1091 [003] d.... 112.407261: da_event_sts: cant_sched x
irq_enable -> can_sched (final)
illegal-1091 [003] ..... 112.407271: da_event_sts: can_sched x
schedule_entry -> scheduling
illegal-1091 [003] d.... 112.407312: da_event_sts: scheduling x
irq_disable -> disable_to_switch
illegal-1091 [003] d.h.. 112.407332: da_event_sts: disable_to_switch x
irq_entry -> in_irq
illegal-1091 [003] dns.. 112.407418: da_event_sts: in_irq x irq_enable ->
scheduling
illegal-1091 [003] dns.. 112.407431: da_event_sts: scheduling x
irq_disable -> disable_to_switch
illegal-1091 [003] dns.. 112.407438: da_event_sts: disable_to_switch x
irq_enable -> enable_to_exit
illegal-1091 [003] dns.. 112.407448: da_event_sts: enable_to_exit x
irq_disable -> enable_to_exit
illegal-1091 [003] dns.. 112.407460: da_event_sts: enable_to_exit x
irq_enable -> enable_to_exit
illegal-1091 [003] dns.. 112.407472: da_event_sts: enable_to_exit x
irq_disable -> enable_to_exit
illegal-1091 [003] dn... 112.407481: da_event_sts: enable_to_exit x
irq_enable -> enable_to_exit
illegal-1091 [003] dn... 112.407492: da_event_sts: enable_to_exit x
irq_disable -> enable_to_exit
illegal-1091 [003] d.... 112.410126: da_event_sts: rv: monitor sts does
not allow event sched_switch on state enable_to_exit
