Hi Olga, kernel test robot noticed the following build errors: [auto build test ERROR on trondmy-nfs/linux-next] [also build test ERROR on brauner-vfs/vfs.all linus/master v6.13 next-20250123] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Olga-Kornievskaia/llist-add-ability-to-remove-a-particular-entry-from-the-list/20250116-072951 base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next patch link: https://lore.kernel.org/r/20250115232406.44815-2-okorniev%40redhat.com patch subject: [PATCH 1/3] llist: add ability to remove a particular entry from the list config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20250124/202501240848.ZH81rjTD-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 19306351a2c45e266fa11b41eb1362b20b6ca56d) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250124/202501240848.ZH81rjTD-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/202501240848.ZH81rjTD-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from lib/test_bitops.c:10: In file included from include/linux/module.h:17: In file included from include/linux/kmod.h:9: In file included from include/linux/umh.h:4: In file included from include/linux/gfp.h:7: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:63: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:15: In file included from include/linux/smp_types.h:5: >> include/linux/llist.h:283:7: error: variable 'pos' is uninitialized when used here [-Werror,-Wuninitialized] 283 | if (pos->next == entry) { | ^~~ include/linux/llist.h:269:24: note: initialize the variable 'pos' to silence this warning 269 | struct llist_node *pos; | ^ | = NULL 1 error generated. vim +/pos +283 include/linux/llist.h 255 256 /** 257 * llist_del_entry - remove a particular entry from a lock-less list 258 * @head: head of the list to remove the entry from 259 * @entry: entry to be removed from the list 260 * 261 * Walk the list, find the given entry and remove it from the list. 262 * The caller must ensure that nothing can race in and change the 263 * list while this is running. 264 * 265 * Returns true if the entry was found and removed. 266 */ 267 static inline bool llist_del_entry(struct llist_head *head, struct llist_node *entry) 268 { 269 struct llist_node *pos; 270 271 if (!head->first) 272 return false; 273 274 /* Is it the first entry? */ 275 if (head->first == entry) { 276 head->first = entry->next; 277 entry->next = entry; 278 return true; 279 } 280 281 /* Find it in the list */ 282 llist_for_each(head->first, pos) { > 283 if (pos->next == entry) { 284 pos->next = entry->next; 285 entry->next = entry; 286 return true; 287 } 288 } 289 return false; 290 } 291 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
