On 2024/4/12 下午4:47, Wujie Duan wrote:
> Add a pre-allocation arch condition to checks that vcpu id should
> smaller than max_vcpus
>
> Signed-off-by: Wujie Duan <[email protected]>
> ---
> arch/loongarch/kvm/vcpu.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
> index 3a8779065f73..d41cacf39583 100644
> --- a/arch/loongarch/kvm/vcpu.c
> +++ b/arch/loongarch/kvm/vcpu.c
> @@ -884,6 +884,9 @@ long kvm_arch_vcpu_async_ioctl(struct file *filp,
>
> int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
> {
> + if (id >= kvm->max_vcpus)
> + return -EINVAL;
> +
> return 0;
> }
>
>
Good catch, and thanks for your contribution.
Reviewed-by: bibo mao <[email protected]>