staging: hv: check kzalloc() result

If kzalloc() fails free allocated resources and exit.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/hv/channel.c b/drivers/staging/hv/channel.c
index f047c5a7f64c1c35e7eed64b9818906e6f95885d..78d1aa5f7f9a600fd35950d9ee8c7e3562046a7b 100644 (file)
--- a/drivers/staging/hv/channel.c
+++ b/drivers/staging/hv/channel.c
@@ -465,6 +465,8 @@ static int VmbusChannelCreateGpadlHeader(void *Kbuffer, u32 Size,
                          sizeof(struct vmbus_channel_gpadl_header) +
                          sizeof(struct gpa_range) + pageCount * sizeof(u64);
                msgHeader = kzalloc(msgSize, GFP_KERNEL);
+               if (msgHeader == NULL)
+                       goto nomem;
                msgHeader->MessageSize = msgSize;
 
                gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg;