Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on nfs/linux-next] [also build test WARNING on v5.9-rc8 next-20201007] [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] url: https://github.com/0day-ci/linux/commits/trondmy-kernel-org/Give-containers-a-unique-client-id/20201008-050958 base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next config: s390-randconfig-s032-20201008 (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-218-gc0e96d6d-dirty # https://github.com/0day-ci/linux/commit/440cb74f8b835271bd5e1f6574dc9cb002cec5be git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review trondmy-kernel-org/Give-containers-a-unique-client-id/20201008-050958 git checkout 440cb74f8b835271bd5e1f6574dc9cb002cec5be # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> echo echo "sparse warnings: (new ones prefixed by >>)" echo >> fs/nfs/nfs4proc.c:6022:22: sparse: sparse: incompatible types in comparison expression (different address spaces): >> fs/nfs/nfs4proc.c:6022:22: sparse: char const [noderef] __rcu * >> fs/nfs/nfs4proc.c:6022:22: sparse: char const * vim +6022 fs/nfs/nfs4proc.c 6009 6010 static size_t 6011 nfs4_get_uniquifier(struct nfs_client *clp, char *buf, size_t buflen) 6012 { 6013 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 6014 struct nfs_netns_client *nn_clp = nn->nfs_client; 6015 const char *id; 6016 size_t len; 6017 6018 buf[0] = '\0'; 6019 6020 if (nn_clp) { 6021 rcu_read_lock(); > 6022 id = rcu_dereference(nn_clp->identifier); 6023 if (id && *id != '\0') 6024 len = strlcpy(buf, id, buflen); 6025 rcu_read_unlock(); 6026 if (len) 6027 return len; 6028 } 6029 6030 if (nfs4_client_id_uniquifier[0] != '\0') 6031 return strlcpy(buf, nfs4_client_id_uniquifier, buflen); 6032 return 0; 6033 } 6034 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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