diff --git a/net/9p/client.c b/net/9p/client.c
index 5cbea903a5ab..8260f132b32e 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1548,7 +1548,7 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
 			kernel_buf = 1;
 			indata = data;
 		} else
-			indata = udata;
+			indata = (__force char *)udata;
 		/*
 		 * response header len is 11
 		 * PDU Header(7) + IO Size (4)