tree: git://git.linux-nfs.org/projects/cel/cel-2.6.git ib-cm-tracepoints head: 0f1fb23980d1722dd444f176751fc589536a6816 commit: 0f1fb23980d1722dd444f176751fc589536a6816 [2/2] RDMA/cm: Add tracepoints to record errors related to ib_cm events config: x86_64-randconfig-s021-20200619 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-rc1-18-g27caae40-dirty git checkout 0f1fb23980d1722dd444f176751fc589536a6816 # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/infiniband/core/cm.c:1277:21: sparse: sparse: cast from restricted __be32 vim +2229 drivers/infiniband/core/cm.c 2211 2212 int ib_send_cm_rep(struct ib_cm_id *cm_id, 2213 struct ib_cm_rep_param *param) 2214 { 2215 struct cm_id_private *cm_id_priv; 2216 struct ib_mad_send_buf *msg; 2217 struct cm_rep_msg *rep_msg; 2218 unsigned long flags; 2219 int ret; 2220 2221 if (param->private_data && 2222 param->private_data_len > IB_CM_REP_PRIVATE_DATA_SIZE) 2223 return -EINVAL; 2224 2225 cm_id_priv = container_of(cm_id, struct cm_id_private, id); 2226 spin_lock_irqsave(&cm_id_priv->lock, flags); 2227 if (cm_id->state != IB_CM_REQ_RCVD && 2228 cm_id->state != IB_CM_MRA_REQ_SENT) { 2230 ret = -EINVAL; 2231 goto out; 2232 } 2233 2234 ret = cm_alloc_msg(cm_id_priv, &msg); 2235 if (ret) 2236 goto out; 2237 2238 rep_msg = (struct cm_rep_msg *) msg->mad; 2239 cm_format_rep(rep_msg, cm_id_priv, param); 2240 msg->timeout_ms = cm_id_priv->timeout_ms; 2241 msg->context[1] = (void *) (unsigned long) IB_CM_REP_SENT; 2242 2243 ret = ib_post_send_mad(msg, NULL); 2244 if (ret) { 2245 spin_unlock_irqrestore(&cm_id_priv->lock, flags); 2246 cm_free_msg(msg); 2247 return ret; 2248 } 2249 2250 cm_id->state = IB_CM_REP_SENT; 2251 cm_id_priv->msg = msg; 2252 cm_id_priv->initiator_depth = param->initiator_depth; 2253 cm_id_priv->responder_resources = param->responder_resources; 2254 cm_id_priv->rq_psn = cpu_to_be32(IBA_GET(CM_REP_STARTING_PSN, rep_msg)); 2255 WARN_ONCE(param->qp_num & 0xFF000000, 2256 "IBTA declares QPN to be 24 bits, but it is 0x%X\n", 2257 param->qp_num); 2258 cm_id_priv->local_qpn = cpu_to_be32(param->qp_num & 0xFFFFFF); 2259 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org