diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2011-04-13 01:27:55 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-05-11 07:57:08 -0400 |
| commit | be6d05cfdf1f2ddbdc367a6433d8eac49d6bfe6f (patch) | |
| tree | 4e20ff818c63f8b9a7c7b84d101f5c669eee454a /arch/x86/kvm/vmx.c | |
| parent | 7ae441eac521b2006c9f03c4f2a23582c07fd76d (diff) | |
KVM: VMX: Ensure that vmx_create_vcpu always returns proper error
In case certain allocations fail, vmx_create_vcpu may return 0 as error
instead of a negative value encoded via ERR_PTR. This causes a NULL
pointer dereferencing later on in kvm_vm_ioctl_vcpu_create.
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index aabe3334d064..af5206983154 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -4251,8 +4251,8 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id) goto free_vcpu; vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL); + err = -ENOMEM; if (!vmx->guest_msrs) { - err = -ENOMEM; goto uninit_vcpu; } @@ -4271,7 +4271,8 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id) if (err) goto free_vmcs; if (vm_need_virtualize_apic_accesses(kvm)) - if (alloc_apic_access_page(kvm) != 0) + err = alloc_apic_access_page(kvm); + if (err) goto free_vmcs; if (enable_ept) { |