Running QEMU with
qemu-system-ppc64 -M none -nographic -m 256
and executing
dump-guest-memory /dev/null 0 8192
results in segfault
Fix by checking if we have CPU, and exit with
error if there is no CPU:
(qemu) dump-guest-memory /dev/null
this feature or command is not currently supported
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <
20170913142036.2469-2-lvivier@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
int cpu_get_dump_info(ArchDumpInfo *info,
const struct GuestPhysBlockList *guest_phys_blocks)
{
- PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
- PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+ PowerPCCPU *cpu;
+ PowerPCCPUClass *pcc;
+
+ if (first_cpu == NULL) {
+ return -1;
+ }
+
+ cpu = POWERPC_CPU(first_cpu);
+ pcc = POWERPC_CPU_GET_CLASS(cpu);
info->d_machine = PPC_ELF_MACHINE;
info->d_class = ELFCLASS;