tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3ebdbe7aa5dd825d609c3433c35c13b440a61c52 commit: f4e44b393389c77958f7c58bf4415032b4cda15b [4201/6976] NFSD: delay unmount source's export after inter-server copy completed. config: alpha-allmodconfig (attached as .config) compiler: alpha-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: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f4e44b393389c77958f7c58bf4415032b4cda15b git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout f4e44b393389c77958f7c58bf4415032b4cda15b # 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__' W=1 ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> fs/nfsd/nfs4state.c:5499:44: sparse: sparse: Using plain integer as NULL pointer fs/nfsd/nfs4state.c:5516:44: sparse: sparse: Using plain integer as NULL pointer fs/nfsd/nfs4state.c: note: in included file (through include/linux/dcache.h, include/linux/fs.h): include/linux/rculist.h:515:9: sparse: sparse: context imbalance in 'put_nfs4_file' - unexpected unlock fs/nfsd/nfs4state.c: note: in included file (through include/linux/wait.h, include/linux/wait_bit.h, include/linux/fs.h): include/linux/list.h:146:25: sparse: sparse: context imbalance in 'put_clnt_odstate' - unexpected unlock fs/nfsd/nfs4state.c:1097:9: sparse: sparse: context imbalance in 'nfs4_put_stid' - unexpected unlock -- >> fs/nfsd/nfs4proc.c:1181:44: sparse: sparse: Using plain integer as NULL pointer >> fs/nfsd/nfs4proc.c:1205:40: sparse: sparse: incorrect type in return expression (different base types) @@ expected int @@ got restricted __be32 [usertype] @@ fs/nfsd/nfs4proc.c:1205:40: sparse: expected int fs/nfsd/nfs4proc.c:1205:40: sparse: got restricted __be32 [usertype] fs/nfsd/nfs4proc.c:1316:16: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be32 [assigned] [usertype] status @@ got int @@ fs/nfsd/nfs4proc.c:1316:16: sparse: expected restricted __be32 [assigned] [usertype] status fs/nfsd/nfs4proc.c:1316:16: sparse: got int fs/nfsd/nfs4proc.c:1402:44: sparse: sparse: Using plain integer as NULL pointer fs/nfsd/nfs4proc.c:1538:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be32 [usertype] status @@ got int @@ fs/nfsd/nfs4proc.c:1538:24: sparse: expected restricted __be32 [usertype] status fs/nfsd/nfs4proc.c:1538:24: sparse: got int vim +5499 fs/nfsd/nfs4state.c 5492 5493 /* 5494 * This is called when nfsd is being shutdown, after all inter_ssc 5495 * cleanup were done, to destroy the ssc delayed unmount list. 5496 */ 5497 static void nfsd4_ssc_shutdown_umount(struct nfsd_net *nn) 5498 { > 5499 struct nfsd4_ssc_umount_item *ni = 0; 5500 struct nfsd4_ssc_umount_item *tmp; 5501 5502 spin_lock(&nn->nfsd_ssc_lock); 5503 list_for_each_entry_safe(ni, tmp, &nn->nfsd_ssc_mount_list, nsui_list) { 5504 list_del(&ni->nsui_list); 5505 spin_unlock(&nn->nfsd_ssc_lock); 5506 mntput(ni->nsui_vfsmount); 5507 kfree(ni); 5508 spin_lock(&nn->nfsd_ssc_lock); 5509 } 5510 spin_unlock(&nn->nfsd_ssc_lock); 5511 } 5512 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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