Hi Dai, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.19-rc6 next-20220714] [cannot apply to cel-2.6/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Dai-Ngo/limit-the-number-of-v4-clients-to-4096-per-4GB-of-system-memory/20220713-041137 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 72a8e05d4f66b5af7854df4490e3135168694b6b config: i386-randconfig-a015 (https://download.01.org/0day-ci/archive/20220715/202207150938.TXWZZpEX-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e61b9c556267086ef9b743a0b57df302eef831b) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/f4722e6591821876532c91087a3ac0e103e8d5d7 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Dai-Ngo/limit-the-number-of-v4-clients-to-4096-per-4GB-of-system-memory/20220713-041137 git checkout f4722e6591821876532c91087a3ac0e103e8d5d7 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/nfsd/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> fs/nfsd/nfsctl.c:1497:42: warning: shift count >= width of type [-Wshift-count-overflow] nn->nfs4_max_clients = (((lowmem * 100) >> 32) * ^ ~~ 1 warning generated. vim +1497 fs/nfsd/nfsctl.c 1463 1464 static __net_init int nfsd_init_net(struct net *net) 1465 { 1466 int retval; 1467 unsigned long lowmem; 1468 struct sysinfo si; 1469 struct nfsd_net *nn = net_generic(net, nfsd_net_id); 1470 1471 retval = nfsd_export_init(net); 1472 if (retval) 1473 goto out_export_error; 1474 retval = nfsd_idmap_init(net); 1475 if (retval) 1476 goto out_idmap_error; 1477 nn->nfsd_versions = NULL; 1478 nn->nfsd4_minorversions = NULL; 1479 retval = nfsd_reply_cache_init(nn); 1480 if (retval) 1481 goto out_drc_error; 1482 nn->nfsd4_lease = 90; /* default lease time */ 1483 nn->nfsd4_grace = 90; 1484 nn->somebody_reclaimed = false; 1485 nn->track_reclaim_completes = false; 1486 nn->clverifier_counter = prandom_u32(); 1487 nn->clientid_base = prandom_u32(); 1488 nn->clientid_counter = nn->clientid_base + 1; 1489 nn->s2s_cp_cl_id = nn->clientid_counter++; 1490 1491 get_random_bytes(&nn->siphash_key, sizeof(nn->siphash_key)); 1492 seqlock_init(&nn->writeverf_lock); 1493 1494 atomic_set(&nn->nfs4_client_count, 0); 1495 si_meminfo(&si); 1496 lowmem = (si.totalram - si.totalhigh) * si.mem_unit; > 1497 nn->nfs4_max_clients = (((lowmem * 100) >> 32) * 1498 NFS4_MAX_CLIENTS_PER_4GB) / 100; 1499 1500 return 0; 1501 1502 out_drc_error: 1503 nfsd_idmap_shutdown(net); 1504 out_idmap_error: 1505 nfsd_export_shutdown(net); 1506 out_export_error: 1507 return retval; 1508 } 1509 -- 0-DAY CI Kernel Test Service https://01.org/lkp
