diff --git a/net/9p/client.c b/net/9p/client.c
index e265a0ca6bdd..30e183b880d5 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -292,6 +292,7 @@ p9_tag_alloc(struct p9_client *c, int8_t type, uint t_size, uint r_size,
 	if (!req)
 		return ERR_PTR(-ENOMEM);
 
+	memset(req, 0, sizeof(req));
 	if (p9_fcall_init(c, &req->tc, alloc_tsize))
 		goto free_req;
 	if (p9_fcall_init(c, &req->rc, alloc_rsize))