SMB3: GUIDs should be constructed as random but valid uuids
GUIDs although random, and 16 bytes, need to be generated as
proper uuids.
Signed-off-by: Steve French <steve.french@primarydata.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reported-by: David Goebels <davidgoe@microsoft.com>
CC: Stable <stable@vger.kernel.org>
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index e863843..3eec96c 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1183,7 +1183,7 @@
buf->dcontext.Timeout = 0; /* Should this be configurable by workload */
buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
- get_random_bytes(buf->dcontext.CreateGuid, 16);
+ generate_random_uuid(buf->dcontext.CreateGuid);
memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16);
/* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */