[PATCH 05/24] Staging: hv: mousevsc: Handle the case where we may get bogus report desc size

[K. Y. Srinivasan]

Handle the case where we may get bogus report desc size from the host.

Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
 drivers/staging/hv/hv_mouse.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/hv_mouse.c b/drivers/staging/hv/hv_mouse.c
index b7cc164..19cfc23 100644
--- a/drivers/staging/hv/hv_mouse.c
+++ b/drivers/staging/hv/hv_mouse.c
@@ -341,6 +341,8 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
 
 	/* Save the report desc */
 	input_device->report_desc_size = desc->desc[0].wDescriptorLength;
+	if (input_device->report_desc_size == 0)
+		goto cleanup;
 	input_device->report_desc = kzalloc(input_device->report_desc_size,
 					  GFP_ATOMIC);
 
-- 
1.7.4.1

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