[linux-next:master 7183/13846] kernel/hazptr.c:178: Warning: missing closing `"'
kernel test robot <[email protected]>
| Newsgroups | dev.linux.lists.oe-kbuild-all |
|---|---|
| Message-ID | <[email protected]> |
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6b8c8af514d739d0335f5579b585e02babe8a727 commit: 9d30872a4c09c2e8a97084ef1fe6913f6bf9e34d [7183/13846] hazptr: Implement Hazard Pointers config: s390-randconfig-001-20260808 (https://download.01.org/0day-ci/archive/20260808/[email protected]/config) compiler: s390-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260808/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): kernel/hazptr.c: Assembler messages: >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' >> kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:178: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' kernel/hazptr.c:183: Warning: missing closing `"' vim +178 kernel/hazptr.c 154 155 /* 156 * hazptr_synchronize: Wait until @addr is released from all slots. 157 * 158 * Wait to observe that each slot contains a value that differs from 159 * @addr before returning. 160 * Should be called from preemptible context. 161 */ 162 void hazptr_synchronize(void *addr) 163 { 164 int cpu; 165 166 /* 167 * Busy-wait should only be done from preemptible context. 168 */ 169 lockdep_assert_preemption_enabled(); 170 171 /* 172 * Store A precedes hazptr_scan(): it unpublishes addr (sets it to 173 * NULL or to a different value), and thus hides it from hazard 174 * pointer readers. 175 */ 176 if (!addr) 177 return; > 178 /* Memory ordering: Store A before Load B. */ 179 smp_mb(); 180 /* Scan all CPUs slots. */ 181 for_each_possible_cpu(cpu) { 182 struct hazptr_overflow_list_flip *overflow_list_flip = per_cpu_ptr(&percpu_overflow_list_flip, cpu); 183 unsigned int scan_idx; 184 185 /* Scan CPU slots. */ 186 hazptr_synchronize_cpu_slots(cpu, addr); 187 188 /* 189 * Scan backup slots in percpu overflow lists. 190 * Forward progress is guaranteed by scanning one list 191 * while new elements are added into the other list. 192 */ 193 guard(mutex)(&overflow_list_flip->lock); 194 scan_idx = overflow_list_flip->add_idx ^ 1; 195 hazptr_synchronize_overflow_list(&overflow_list_flip->array[scan_idx], addr); 196 /* Flip current list. */ 197 WRITE_ONCE(overflow_list_flip->add_idx, scan_idx); 198 hazptr_synchronize_overflow_list(&overflow_list_flip->array[scan_idx ^ 1], addr); 199 } 200 } 201 EXPORT_SYMBOL_GPL(hazptr_synchronize); 202 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki