tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4f30a60aa78410496e5ffe632a371c00f0d83a8d commit: 80591e61a0f7e88deaada69844e4a31280c4a38f kbuild: tell sparse about the $ARCH date: 9 months ago config: nios2-randconfig-s031-20200805 (attached as .config) compiler: nios2-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-117-g8c7aee71-dirty git checkout 80591e61a0f7e88deaada69844e4a31280c4a38f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=nios2
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> sparse warnings: (new ones prefixed by >>) >> net/netfilter/nf_conncount.c:259:9: sparse: sparse: context imbalance in >> 'nf_conncount_gc_list' - wrong count at exit net/netfilter/nf_conncount.c: note: in included file (through include/linux/mm_types.h, include/linux/mmzone.h, include/linux/gfp.h, ...): include/linux/rbtree.h:84:9: sparse: sparse: incompatible types in comparison expression (different address spaces): include/linux/rbtree.h:84:9: sparse: struct rb_node [noderef] <asn:4> * include/linux/rbtree.h:84:9: sparse: struct rb_node * vim +/nf_conncount_gc_list +259 net/netfilter/nf_conncount.c cb2b36f5a97df7 Yi-Hung Wei 2018-07-02 219 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 220 /* Return true if the list is empty. Must be called with BH disabled. */ 5c789e131cbb99 Yi-Hung Wei 2018-07-02 221 bool nf_conncount_gc_list(struct net *net, cb2b36f5a97df7 Yi-Hung Wei 2018-07-02 222 struct nf_conncount_list *list) 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 223 { 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 224 const struct nf_conntrack_tuple_hash *found; cb2b36f5a97df7 Yi-Hung Wei 2018-07-02 225 struct nf_conncount_tuple *conn, *conn_n; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 226 struct nf_conn *found_ct; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 227 unsigned int collected = 0; 3c5cdb17c3be76 Taehee Yoo 2018-11-05 228 bool ret = false; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 229 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 230 /* don't bother if other cpu is already doing GC */ 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 231 if (!spin_trylock(&list->list_lock)) 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 232 return false; 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 233 cb2b36f5a97df7 Yi-Hung Wei 2018-07-02 234 list_for_each_entry_safe(conn, conn_n, &list->head, node) { c80f10bc973af2 Pablo Neira Ayuso 2018-12-28 235 found = find_or_evict(net, list, conn); 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 236 if (IS_ERR(found)) { c80f10bc973af2 Pablo Neira Ayuso 2018-12-28 237 if (PTR_ERR(found) == -ENOENT) 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 238 collected++; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 239 continue; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 240 } 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 241 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 242 found_ct = nf_ct_tuplehash_to_ctrack(found); 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 243 if (already_closed(found_ct)) { 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 244 /* 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 245 * we do not care about connections which are 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 246 * closed already -> ditch it 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 247 */ 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 248 nf_ct_put(found_ct); c80f10bc973af2 Pablo Neira Ayuso 2018-12-28 249 conn_free(list, conn); 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 250 collected++; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 251 continue; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 252 } 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 253 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 254 nf_ct_put(found_ct); 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 255 if (collected > CONNCOUNT_GC_MAX_NODES) 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 256 break; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 257 } 3c5cdb17c3be76 Taehee Yoo 2018-11-05 258 c80f10bc973af2 Pablo Neira Ayuso 2018-12-28 @259 if (!list->count) 3c5cdb17c3be76 Taehee Yoo 2018-11-05 260 ret = true; 2f971a8f425545 Pablo Neira Ayuso 2018-12-28 261 spin_unlock(&list->list_lock); 3c5cdb17c3be76 Taehee Yoo 2018-11-05 262 3c5cdb17c3be76 Taehee Yoo 2018-11-05 263 return ret; 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 264 } 976afca1ceba53 Yi-Hung Wei 2018-07-02 265 EXPORT_SYMBOL_GPL(nf_conncount_gc_list); 2a406e8ac7c3e7 Yi-Hung Wei 2018-07-02 266 :::::: The code at line 259 was first introduced by commit :::::: c80f10bc973af2ace6b1414724eeff61eaa71837 netfilter: nf_conncount: speculative garbage collection on empty lists :::::: TO: Pablo Neira Ayuso <[email protected]> :::::: CC: Pablo Neira Ayuso <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
