Tracing command idle pid 11 tid 100006 td 0xc000000080a6d580 (CPU 3) 0xc00800006c1e1220: at intr_event_handle+0x124 0xc00800006c1e1290: at powerpc_dispatch_intr+0x70 0xc00800006c1e1330: at powernv_set_nmmu_ptcr+0xa08 0xc00800006c1e13d0: at powerpc_interrupt+0x19c 0xc00800006c1e1420: kernel trap 0xea0 by copystr+0x298: srr1=0x9000000000009032 r1=0xc00800006c1e16d0 cr=0x20000002 xer=0x20040000 ctr=0xc0000000030fa398 r2=0xc000000003b24000 0xc00800006c1e16d0: at umtx_shm_vnobj_persistent+0x28a0 0xc00800006c1e1700: at cpu_idle+0x70 0xc00800006c1e1730: at sched_idletd+0x5f8 0xc00800006c1e1860: at fork_exit+0xb0 0xc00800006c1e18f0: at fork_trampoline+0x18 0xc00800006c1e1920: at rstcodeend+0x60