Hi John, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/John-Ousterhout/net-homa-define-user-visible-API-for-Homa/20241112-074535 base: net-next/main patch link: https://lore.kernel.org/r/20241111234006.5942-13-ouster%40cs.stanford.edu patch subject: [PATCH net-next v2 12/12] net: homa: create Makefile and Kconfig config: riscv-randconfig-r112-20241113 (https://download.01.org/0day-ci/archive/20241113/202411132114.VB5yFmtR-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713) reproduce: (https://download.01.org/0day-ci/archive/20241113/202411132114.VB5yFmtR-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411132114.VB5yFmtR-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> net/homa/homa_sock.c:201:31: sparse: sparse: cast removes address space '__rcu' of expression net/homa/homa_sock.c:248:17: sparse: sparse: context imbalance in 'homa_sock_shutdown' - different lock contexts for basic block net/homa/homa_sock.c:303:21: sparse: sparse: context imbalance in 'homa_sock_bind' - different lock contexts for basic block vim +/__rcu +201 net/homa/homa_sock.c 8ddf00265eb650 John Ousterhout 2024-11-11 183 8ddf00265eb650 John Ousterhout 2024-11-11 184 /* 8ddf00265eb650 John Ousterhout 2024-11-11 185 * homa_sock_unlink() - Unlinks a socket from its socktab and does 8ddf00265eb650 John Ousterhout 2024-11-11 186 * related cleanups. Once this method returns, the socket will not be 8ddf00265eb650 John Ousterhout 2024-11-11 187 * discoverable through the socktab. 8ddf00265eb650 John Ousterhout 2024-11-11 188 */ 8ddf00265eb650 John Ousterhout 2024-11-11 189 void homa_sock_unlink(struct homa_sock *hsk) 8ddf00265eb650 John Ousterhout 2024-11-11 190 { 8ddf00265eb650 John Ousterhout 2024-11-11 191 struct homa_socktab *socktab = hsk->homa->port_map; 8ddf00265eb650 John Ousterhout 2024-11-11 192 struct homa_socktab_scan *scan; 8ddf00265eb650 John Ousterhout 2024-11-11 193 8ddf00265eb650 John Ousterhout 2024-11-11 194 /* If any scans refer to this socket, advance them to refer to 8ddf00265eb650 John Ousterhout 2024-11-11 195 * the next socket instead. 8ddf00265eb650 John Ousterhout 2024-11-11 196 */ 8ddf00265eb650 John Ousterhout 2024-11-11 197 spin_lock_bh(&socktab->write_lock); 8ddf00265eb650 John Ousterhout 2024-11-11 198 list_for_each_entry(scan, &socktab->active_scans, scan_links) { 8ddf00265eb650 John Ousterhout 2024-11-11 199 if (!scan->next || scan->next->sock != hsk) 8ddf00265eb650 John Ousterhout 2024-11-11 200 continue; 8ddf00265eb650 John Ousterhout 2024-11-11 @201 scan->next = (struct homa_socktab_links *)hlist_next_rcu(&scan 8ddf00265eb650 John Ousterhout 2024-11-11 202 ->next->hash_links); 8ddf00265eb650 John Ousterhout 2024-11-11 203 } 8ddf00265eb650 John Ousterhout 2024-11-11 204 hlist_del_rcu(&hsk->socktab_links.hash_links); 8ddf00265eb650 John Ousterhout 2024-11-11 205 spin_unlock_bh(&socktab->write_lock); 8ddf00265eb650 John Ousterhout 2024-11-11 206 } 8ddf00265eb650 John Ousterhout 2024-11-11 207 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
