tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 1ab75b2e415a29dba9aec94f203c6f88dbfc0ba0 commit: dbd4c2dd8f13ae40112081df5d9e19ff040f773d [3071/14582] NFSD add COPY_NOTIFY operation reproduce: # apt-get install sparse # sparse version: v0.6.1-82-g68ac1bb-dirty git checkout dbd4c2dd8f13ae40112081df5d9e19ff040f773d make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +1373 fs/nfsd/nfs4proc.c 1340 1341 static __be32 1342 nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 1343 union nfsd4_op_u *u) 1344 { 1345 struct nfsd4_copy_notify *cn = &u->copy_notify; 1346 __be32 status; 1347 struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); 1348 struct nfs4_stid *stid; 1349 struct nfs4_cpntf_state *cps; 1350 struct nfs4_client *clp = cstate->clp; 1351 1352 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, 1353 &cn->cpn_src_stateid, RD_STATE, NULL, 1354 &stid); 1355 if (status) 1356 return status; 1357 1358 cn->cpn_sec = nn->nfsd4_lease; 1359 cn->cpn_nsec = 0; 1360 1361 status = nfserrno(-ENOMEM); 1362 cps = nfs4_alloc_init_cpntf_state(nn, stid); 1363 if (!cps) 1364 goto out; 1365 memcpy(&cn->cpn_cnr_stateid, &cps->cp_stateid.stid, sizeof(stateid_t)); 1366 memcpy(&cps->cp_p_stateid, &stid->sc_stateid, sizeof(stateid_t)); 1367 memcpy(&cps->cp_p_clid, &clp->cl_clientid, sizeof(clientid_t)); 1368 1369 /* For now, only return one server address in cpn_src, the 1370 * address used by the client to connect to this server. 1371 */ 1372 cn->cpn_src.nl4_type = NL4_NETADDR; 1374 &cn->cpn_src.u.nl4_addr); 1375 WARN_ON_ONCE(status); 1376 if (status) { 1377 nfs4_put_cpntf_state(nn, cps); 1378 goto out; 1379 } 1380 out: 1381 nfs4_put_stid(stid); 1382 return status; 1383 } 1384 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation