Hi KP, I love your patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/KP-Singh/Generalizing-bpf_local_... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: sparc-allmodconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): kernel/bpf/bpf_inode_storage.c: In function 'unlink_inode_storage': 34 | struct bpf_local_storage_map *smap; | ^~~~ vim +/smap +34 kernel/bpf/bpf_inode_storage.c 29 30 static bool unlink_inode_storage(struct bpf_local_storage *local_storage, 31 struct bpf_local_storage_elem *selem, 32 bool uncharge_omem) 33 { 35 struct bpf_storage_blob *bsb; 36 bool free_local_storage; 37 struct inode *inode; 38 39 inode = local_storage->owner; 40 bsb = bpf_inode(inode); 41 if (!bsb) 42 return false; 43 44 smap = rcu_dereference(SDATA(selem)->smap); 45 /* All uncharging on sk->sk_omem_alloc must be done first. 46 * sk may be freed once the last selem is unlinked from sk_storage. 47 */ 48 49 free_local_storage = hlist_is_singular_node(&selem->snode, 50 &local_storage->list); 51 52 if (free_local_storage) { 53 /* After this RCU_INIT, sk may be freed and cannot be used */ 54 RCU_INIT_POINTER(bsb->storage, NULL); 55 local_storage->owner = NULL; 56 } 57 58 return free_local_storage; 59 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org