diff --git a/net/9p/client.c b/net/9p/client.c
index 81925b9233185380482ecf59cb669383b0244615..498454b3c06c3ddf0e8c3989e23bef9360587544 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1583,6 +1583,10 @@ p9_client_read(struct p9_fid *fid, u64 offset, struct iov_iter *to, int *err)
 			p9_free_req(clnt, req);
 			break;
 		}
+		if (rsize < count) {
+			pr_err("bogus RREAD count (%d > %d)\n", count, rsize);
+			count = rsize;
+		}
 
 		p9_debug(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
 		if (!count) {
@@ -1650,6 +1654,10 @@ p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
 			p9_free_req(clnt, req);
 			break;
 		}
+		if (rsize < count) {
+			pr_err("bogus RWRITE count (%d > %d)\n", count, rsize);
+			count = rsize;
+		}
 
 		p9_debug(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);