CPU, when crash_kexec is executing, another panic is triggered on another CPU for timeout mechanism in MCE. We have seen something like that in mce-test developing. Please try following command line for mce injecting. mce-inject --no-random /home/prasadkr/mce/mce-test/cases/soft-inj/panic_ucr/data/srar_over Which is used by kdump test driver of mce-test too. Best Regards, Huang Ying