diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d4b6bc3b4d73..09e4a0af6fb4 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -449,6 +449,10 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
 			.ia_size	= iap->ia_size,
 		};
 
+		host_err = -EFBIG;
+		if (iap->ia_size < 0)
+			goto out_unlock;
+
 		host_err = notify_change(dentry, &size_attr, NULL);
 		if (host_err)
 			goto out_unlock;