On Tue, Jun 08, 2021 at 08:33:39PM +0200, Daniel Wagner wrote: > cpumask_first_and() returns >= nr_cpu_ids if the two provided masks do > not share a common bit. Verify we get a valid value back from > cpumask_first_and(). So I got feedback on this issue (but not on the patch itself yet). The system starts with 16 virtual CPU cores and during the test 4 cores are removed[1] and as soon there is an error on the storage side, the reset code on the host ends up in this path and crashes. I still don't understand why the CPU removal is not updating the CPU mask correctly before we hit the reset path. I'll continue to investigate. [1] echo 0 > /sys/devices/system/cpu/cpu#/online
