From dbaa07c404d05676df8a081e60b6e66344eafc51 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 4 May 2010 09:45:26 -0300 Subject: [PATCH] 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: Marcelo Tosatti Signed-off-by: Avi Kivity --- target-i386/kvm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target-i386/kvm.c b/target-i386/kvm.c index f73b47b97c..c9ec72eee7 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -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; -- 2.39.2