vcl: if the ldp user send buf with 0 len, it will assert failed.
Type: fix
@@ -1897,7 +1897,7 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
svm_msg_q_t *mq;
u8 is_ct;
- if (PREDICT_FALSE (!buf))
+ if (PREDICT_FALSE (!buf || n == 0))
return VPPCOM_EINVAL;
s = vcl_session_get_w_handle (wrk, session_handle);
