On 30/04/19 23:46, Jim Mattson wrote:
> On Fri, Mar 22, 2019 at 9:53 AM Jim Mattson <jmattson@xxxxxxxxxx> wrote:
>>
>> On Tue, Mar 12, 2019 at 8:42 PM Jim Mattson <jmattson@xxxxxxxxxx> wrote:
>>>
>>> On Tue, Feb 12, 2019 at 10:43 AM Krish Sadhukhan
>>> <krish.sadhukhan@xxxxxxxxxx> wrote:
>>>>
>>>>
>>>>
>>>> On 02/12/2019 10:09 AM, Jim Mattson wrote:
>>>>> On Wed, Jan 30, 2019 at 11:52 AM Jim Mattson <jmattson@xxxxxxxxxx> wrote:
>>>>>> On Thu, Jan 17, 2019 at 11:56 AM Jim Mattson <jmattson@xxxxxxxxxx> wrote:
>>>>>>> The size checks in vmx_nested_state are wrong because the calculations
>>>>>>> are made based on the size of a pointer to a struct kvm_nested_state
>>>>>>> rather than the size of a struct kvm_nested_state.
>>>>>>>
>>>>>>> Reported-by: Felix Wilhelm <fwilhelm@xxxxxxxxxx>
>>>>>>> Signed-off-by: Jim Mattson <jmattson@xxxxxxxxxx>
>>>>>>> Reviewed-by: Drew Schmitt <dasch@xxxxxxxxxx>
>>>>>>> Reviewed-by: Marc Orr <marcorr@xxxxxxxxxx>
>>>>>>> Reviewed-by: Peter Shier <pshier@xxxxxxxxxx>
>>>>>>> ---
>>>>>>> arch/x86/kvm/vmx/nested.c | 4 ++--
>>>>>>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>>>>>>
>>>>>>> diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
>>>>>>> index 2616bd2c7f2c..3bb49ad91d0c 100644
>>>>>>> --- a/arch/x86/kvm/vmx/nested.c
>>>>>>> +++ b/arch/x86/kvm/vmx/nested.c
>>>>>>> @@ -5351,7 +5351,7 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
>>>>>>> return ret;
>>>>>>>
>>>>>>> /* Empty 'VMXON' state is permitted */
>>>>>>> - if (kvm_state->size < sizeof(kvm_state) + sizeof(*vmcs12))
>>>>>>> + if (kvm_state->size < sizeof(*kvm_state) + sizeof(*vmcs12))
>>>>>>> return 0;
>>>>>>>
>>>>>>> if (kvm_state->vmx.vmcs_pa != -1ull) {
>>>>>>> @@ -5395,7 +5395,7 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
>>>>>>> vmcs12->vmcs_link_pointer != -1ull) {
>>>>>>> struct vmcs12 *shadow_vmcs12 = get_shadow_vmcs12(vcpu);
>>>>>>>
>>>>>>> - if (kvm_state->size < sizeof(kvm_state) + 2 * sizeof(*vmcs12))
>>>>>>> + if (kvm_state->size < sizeof(*kvm_state) + 2 * sizeof(*vmcs12))
>>>>>>> return -EINVAL;
>>>>>>>
>>>>>>> if (copy_from_user(shadow_vmcs12,
>>>>>>> --
>>>>>>> 2.20.1.97.g81188d93c3-goog
>>>>>> Ping.
>>>>> Ping again?
>>>> Reviewed-by: Krish Sadhukhan <krish.sadhukhan@xxxxxxxxxx>
>>>
>>> Ping again, just for grins.
>>
>> Ping.
>
> This seems pretty straightforward. Am I missing something?
Nope, I just missed it again and again. I've queued it now.
Paolo
