msqcli0: <ppbus microseq client (msqhx harness)> on msqbus0
MSQHX: harness attached (production ppb_msq.c); drive cases via sysctl hw.msqhx.case={0,2,4,5}
rdrand0: No RdRand support.
MSQHX: harness case=2 start (production ppb_msq.c)
MSQHX: --- DF-5574 MS_OP_PUT/GET unbounded recursion ---
MSQHX: triggering ppb_MS_microseq(top) with put_xfer[NIBBLE].loop containing MS_OP_PUT; expecting stack exhaustion (panic)...
DOUBLE FAULT - KERNEL STACK GUARD HIT!

Fatal double fault
rip = 0xffffffff82600340
rsp = 0xfffff801182e9000
rbp = 0xfffff801182e9048
cpuid = 2; lapic id = 2