Hello, When running a VM with libvirt I get:
/usr/bin/qemu-system-ppc64 --version QEMU emulator version 8.1.3 (Virtualization / 15.5) Copyright (c) 2003-2023 Fabrice Bellard and the QEMU Project developers /usr/bin/qemu-system-ppc64 -name guest=sles12sp5-ppc64le,debug-threads=on -S -object {"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-11-sles12sp5-ppc64le/master-key.aes"} -machine pseries-7.1,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram -accel tcg -cpu POWER9 -m 4096 -object {"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":4294967296} -overcommit mem-lock=off -smp 16,sockets=1,dies=1,cores=2,threads=8 -uuid a6ad6a7d-125b-4525-b452-241ce2000eda -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=29,server=on,wait=off -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device {"driver":"qemu-xhci","p2":15,"p3":15,"id":"usb","bus":"pci.0","addr":"0x3"} -device {"driver":"virtio-scsi-pci","id":"scsi0","bus":"pci.0","addr":"0x4"} -device {"driver":"virtio-serial-pci","id":"virtio-serial0","bus":"pci.0","addr":"0x2"} -blockdev {"driver":"file","filename":"/home/hramrach/Downloads/SLE-12-SP5-Server-MINI-ISO-ppc64le-GM-DVD.iso","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-2-format","read-only":true,"driver":"raw","file":"libvirt-2-storage"} -device {"driver":"scsi-cd","bus":"scsi0.0","channel":0,"scsi-id":0,"lun":0,"device_id":"drive-scsi0-0-0-0","drive":"libvirt-2-format","id":"scsi0-0-0-0","bootindex":2} -blockdev {"driver":"file","filename":"/var/lib/libvirt/images/sles12sp5-ppc64le.qcow2","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-1-format","read-only":false,"discard":"unmap","driver":"qcow2","file":"libvirt-1-storage","backing":null} -device {"driver":"scsi-hd","bus":"scsi0.0","channel":0,"scsi-id":0,"lun":1,"device_id":"drive-scsi0-0-0-1","drive":"libvirt-1-format","id":"scsi0-0-0-1","bootindex":1} -netdev {"type":"tap","fd":"30","id":"hostnet0"} -device {"driver":"e1000","netdev":"hostnet0","id":"net0","mac":"52:54:00:3b:d5:a5","bus":"pci.0","addr":"0x1"} -chardev pty,id=charserial0 -device {"driver":"spapr-vty","chardev":"charserial0","id":"serial0","reg":805306368} -audiodev {"id":"audio1","driver":"none"} -device {"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x5"} -object {"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"} -device {"driver":"virtio-rng-pci","rng":"objrng0","id":"rng0","bus":"pci.0","addr":"0x6"} -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny -msg timestamp=on virsh qemu-monitor-command sles12sp5-ppc64le query-hotpluggable-cpus | jq . | cat { "return": [ { "props": { "core-id": 8, "node-id": 0 }, "vcpus-count": 8, "qom-path": "/machine/unattached/device[2]", "type": "power9_v2.2-spapr-cpu-core" }, { "props": { "core-id": 0, "node-id": 0 }, "vcpus-count": 8, "qom-path": "/machine/unattached/device[1]", "type": "power9_v2.2-spapr-cpu-core" } ], "id": "libvirt-155" } virsh qemu-monitor-command sles12sp5-ppc64le device_del '"id":"/machine/unattached/device[2]"' | jq . { "return": {}, "id": "libvirt-218" } virsh qemu-monitor-command sles12sp5-ppc64le query-hotpluggable-cpus | jq . | cat { "return": [ { "props": { "core-id": 8, "node-id": 0 }, "vcpus-count": 8, "type": "power9_v2.2-spapr-cpu-core" }, { "props": { "core-id": 0, "node-id": 0 }, "vcpus-count": 8, "qom-path": "/machine/unattached/device[1]", "type": "power9_v2.2-spapr-cpu-core" } ], "id": "libvirt-235" } virsh qemu-monitor-command sles12sp5-ppc64le device_add '"id":"cpu-666"' '"driver":"power9_v2.2-spapr-cpu-core"' '"core-id":8' '"node-id":0' | jq . __GI_raise (sig=6) at ../sysdeps/unix/sysv/linux/raise.c:51 51 } (gdb) up #1 0x00007f7839c553e5 in __GI_abort () at abort.c:79 79 raise (SIGABRT); (gdb) up #2 0x00007f783c54a125 in g_assertion_message (domain=domain@entry=0x0, file=file@entry=0x556b3baf9242 "../tcg/tcg.c", line=line@entry=784, func=func@entry=0x556b3bb55720 <__func__.55816> "tcg_register_thread", message=message@entry=0x7f76a46e8f40 "assertion failed: (n < tcg_max_ctxs)") at ../glib/gtestutils.c:3223 3223 g_abort (); This ends the usable part of stacktrace, going upp the call stack gdb locks up. Looking at tcg.c line 784 is here: ster_thread(void) { TCGContext *s = g_malloc(sizeof(*s)); unsigned int i, n; *s = tcg_init_ctx; /* Relink mem_base. */ for (i = 0, n = tcg_init_ctx.nb_globals; i < n; ++i) { if (tcg_init_ctx.temps[i].mem_base) { ptrdiff_t b = tcg_init_ctx.temps[i].mem_base - tcg_init_ctx.temps; tcg_debug_assert(b >= 0 && b < n); s->temps[i].mem_base = &s->temps[b]; } } /* Claim an entry in tcg_ctxs */ n = qatomic_fetch_inc(&tcg_cur_ctxs); >>> g_assert(n < tcg_max_ctxs); <<< qatomic_set(&tcg_ctxs[n], s); if (n > 0) { alloc_tcg_plugin_context(s); tcg_region_initial_alloc(s); } tcg_ctx = s; } Any idea why qemu would be crashing here? Thanks Michal