panic: sched_pickcpu: Failed to find a cpu. cpuid = 0 time = 1 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xffffffff82e047a0 vpanic() at vpanic+0x1e0/frame 0xffffffff82e04800 panic() at panic+0x43/frame 0xffffffff82e04860 sched_pickcpu() at sched_pickcpu+0x8b9/frame 0xffffffff82e04950 sched_add() at sched_add+0xaa/frame 0xffffffff82e04990 gtaskqueue_start_threads() at gtaskqueue_start_threads+0x144/frame 0xffffffff82e04a30 taskqgroup_cpu_create() at taskqgroup_cpu_create+0x14e/frame 0xffffffff82e04a70 taskqgroup_adjust() at taskqgroup_adjust+0x256/frame 0xffffffff82e04b00 mi_startup() at mi_startup+0x3ec/frame 0xffffffff82e04b70 btext() at btext+0x2c KDB: enter: panic [ thread pid 0 tid 100000 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why db>