Re: [PATCH] hw/xen: Check if len is 0 before memcpy()

[Philippe Mathieu-Daudé]

On 8/1/25 12:31, Akihiko Odaki wrote:
> data->data can be NULL when len is 0. Strictly speaking, the behavior
> of memcpy() in such a scenario is undefined so UBSan complaints.
>
> Satisfy UBSan by checking if len is 0 before memcpy().
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> ---
>   hw/i386/kvm/xen_xenstore.c | 4 ++++
>   1 file changed, 4 insertions(+)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>