A lot of function call interrupts on isolated CPU cores caused by RCU callbacks

Issue

In some cases on Red Hat Enterprise Linux 8.3 or 8.4 systems where some CPU cores are isolated and the rest of CPU cores are not isolated there might be a lot of function call interrupts arriving to isolated CPU cores.
Isolation is done with such or similar kernel cmdline options:

nmi_watchdog=0 nosoftlockup mce=off irqaffinity=0 nowatchdog nomce numa_balancing=disable transparent_hugepage=never rcu_nocbs=<list_of_CPUs> rcu_nocb_poll nohz=on nohz_full=<list_of_CPUs> skew_tick=1 intel_pstate=disable intel_idle.max_cstate=0 processor.max_cstate=0 isolcpus=nohz,domain,managed_irq,<list_of_CPUs> tsc=reliable