Re: [PATCH] Drivers: hv: vmbus: Initialize request offers message for Isolation VM

From: Wei Liu
Date: Wed Jan 05 2022 - 15:39:51 EST


On Wed, Jan 05, 2022 at 11:27:46AM -0800, Juan Vazquez wrote:
> Initialize memory of request offers message to be sent to the host so
> padding or uninitialized fields do not leak guest memory contents.
>
> Signed-off-by: Juan Vazquez <juvazq@xxxxxxxxxxxxxxxxxxx>

Applied to hyperv-next. Thanks.

> ---
> drivers/hv/channel_mgmt.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
> index 2829575fd9b7..60375879612f 100644
> --- a/drivers/hv/channel_mgmt.c
> +++ b/drivers/hv/channel_mgmt.c
> @@ -1554,7 +1554,7 @@ int vmbus_request_offers(void)
> struct vmbus_channel_msginfo *msginfo;
> int ret;
>
> - msginfo = kmalloc(sizeof(*msginfo) +
> + msginfo = kzalloc(sizeof(*msginfo) +
> sizeof(struct vmbus_channel_message_header),
> GFP_KERNEL);
> if (!msginfo)
> --
> 2.32.0
>