Commit dbaa07c4 authored by Jan Kiszka's avatar Jan Kiszka Committed by Marcelo Tosatti
Browse files

kvm: validate context for kvm cpu get/put operations 



Validate that KVM vcpu state is only read/written from cpu thread itself
or that cpu is stopped.

Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent ced6c051

target-i386/kvm.c

+4 −0
Original line number Diff line number Diff line
@@ -949,6 +949,8 @@ int kvm_arch_put_registers(CPUState *env, int level) 
{

    int ret;



    assert(cpu_is_stopped(env) || qemu_cpu_self(env));



    ret = kvm_getput_regs(env, 1);

    if (ret < 0)

        return ret;
@@ -991,6 +993,8 @@ int kvm_arch_get_registers(CPUState *env) 
{

    int ret;



    assert(cpu_is_stopped(env) || qemu_cpu_self(env));



    ret = kvm_getput_regs(env, 0);

    if (ret < 0)

        return ret;