* [PATCH] Drivers: hv: vmbus: Initialize request offers message for Isolation VM
@ 2022-01-05 19:27 Juan Vazquez
2022-01-05 20:39 ` Wei Liu
0 siblings, 1 reply; 2+ messages in thread
From: Juan Vazquez @ 2022-01-05 19:27 UTC (permalink / raw)
To: kys, haiyangz, sthemmin, wei.liu, decui, mikelley
Cc: linux-hyperv, linux-kernel
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@linux.microsoft.com>
---
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] Drivers: hv: vmbus: Initialize request offers message for Isolation VM
2022-01-05 19:27 [PATCH] Drivers: hv: vmbus: Initialize request offers message for Isolation VM Juan Vazquez
@ 2022-01-05 20:39 ` Wei Liu
0 siblings, 0 replies; 2+ messages in thread
From: Wei Liu @ 2022-01-05 20:39 UTC (permalink / raw)
To: Juan Vazquez
Cc: kys, haiyangz, sthemmin, wei.liu, decui, mikelley, linux-hyperv,
linux-kernel
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@linux.microsoft.com>
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
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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