[OpenWrt-Devel] [PATCH 6/7] libubus: fix ubus_invoke() to return err in case ubus_start_request() fails

[Alexandru Ardelean]

Seems the UBUS_MAX_MSGLEN is ignored by ubus_invoke(),
and then segfault happens.

This issue is present before this set of patches.

---
 libubus-req.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libubus-req.c b/libubus-req.c
index f24f033..8475dc9 100644
--- a/libubus-req.c
+++ b/libubus-req.c
@@ -224,8 +224,12 @@ int ubus_invoke(struct ubus_context *ctx, uint32_t obj, const char *method,
 		int timeout)
 {
 	struct ubus_request req;
+	int rc;
+
+	rc = ubus_invoke_async(ctx, obj, method, msg, &req);
+	if (rc)
+		return rc;
 
-	ubus_invoke_async(ctx, obj, method, msg, &req);
 	req.data_cb = cb;
 	req.priv = priv;
 	return ubus_complete_request(ctx, &req, timeout);
-- 
1.8.4.5
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