Re: [PATCH v5 5/6] accel/kvm: Free as when an error occurred

[Peter Maydell]

On Thu, 27 Jul 2023 at 08:31, Akihiko Odaki <akihiko.odaki@daynix.com> wrote:
>
> An error may occur after s->as is allocated, for example while
> determining KVM type.

That's about the one example you don't want to cite, because
it makes it sound like this is only a problem because
of a bug in the previous patch. In fact we already have
lots of 'goto err' paths after the allocation of s->as,
such as the one when kvm_ioctl(KVM_CREATE_VM) fails.

> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> ---
>  accel/kvm/kvm-all.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
> index 94a62efa3c..4591669d78 100644
> --- a/accel/kvm/kvm-all.c
> +++ b/accel/kvm/kvm-all.c
> @@ -2765,6 +2765,7 @@ err:
>      if (s->fd != -1) {
>          close(s->fd);
>      }
> +    g_free(s->as);
>      g_free(s->memory_listener.slots);
>
>      return ret;

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM