* [jimc:folio-pool-v2-lockdep 21/21] kernel/locking/lockdep_proc.c:298:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int'
@ 2026-08-18 2:29 kernel test robot
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From: kernel test robot @ 2026-08-18 2:29 UTC (permalink / raw)
To: Jim Cromie, Łukasz Bartosik; +Cc: oe-kbuild-all
tree: https://github.com/jimc/linux.git folio-pool-v2-lockdep
head: e77ee8289ea0755b0ee299348504d4568f942d71
commit: e77ee8289ea0755b0ee299348504d4568f942d71 [21/21] locking/lockdep: Report bootstrap usage, capacity, and size in /proc/lockdep_stats
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20260818/202608181008.P4BhSktT-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260818/202608181008.P4BhSktT-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608181008.P4BhSktT-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from kernel/locking/lockdep_proc.c:25:
kernel/locking/lockdep_internals.h: In function 'debug_class_ops_inc':
kernel/locking/lockdep_internals.h:257:23: error: 'lock_classes' undeclared (first use in this function); did you mean 'lock_class'?
257 | idx = class - lock_classes;
| ^~~~~~~~~~~~
| lock_class
kernel/locking/lockdep_internals.h:257:23: note: each undeclared identifier is reported only once for each function it appears in
kernel/locking/lockdep_internals.h: In function 'debug_class_ops_read':
kernel/locking/lockdep_internals.h:266:23: error: 'lock_classes' undeclared (first use in this function); did you mean 'lock_class'?
266 | idx = class - lock_classes;
| ^~~~~~~~~~~~
| lock_class
kernel/locking/lockdep_proc.c: In function 'lockdep_stats_show':
>> kernel/locking/lockdep_proc.c:298:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
298 | seq_printf(m, " lock-classes: %11lu [bootstrap: %lu/%lu, %zu kB]\n",
| ~~^
| |
| unsigned int
| %lu
299 | nr_lock_classes, nr_lock_classes, BOOTSTRAP_LOCK_CLASSES_CAP,
300 | (BOOTSTRAP_LOCK_CLASSES_CAP * sizeof(struct lock_class)) / 1024);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
kernel/locking/lockdep_proc.c:315:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
315 | seq_printf(m, " direct dependencies: %11lu [bootstrap: %lu/%lu, %zu kB]\n",
| ~~^
| |
| unsigned int
| %lu
316 | nr_list_entries, nr_list_entries, BOOTSTRAP_LOCKDEP_ENTRIES_CAP,
317 | (BOOTSTRAP_LOCKDEP_ENTRIES_CAP * sizeof(struct lock_list)) / 1024);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
kernel/locking/lockdep_proc.c:345:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
345 | seq_printf(m, " dependency chains: %11lu [bootstrap: %lu/%lu, %zu kB]\n",
| ~~^
| |
| unsigned int
| %lu
346 | lock_chain_count(), lock_chain_count(), BOOTSTRAP_LOCK_CHAINS_CAP,
347 | (BOOTSTRAP_LOCK_CHAINS_CAP * sizeof(struct lock_chain)) / 1024);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
kernel/locking/lockdep_proc.c:360:99: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
360 | seq_printf(m, " dependency chain hlocks used: %11u [bootstrap: %u/%lu, %zu kB]\n",
| ~~^
| |
| unsigned int
| %lu
361 | chain_hlocks_used(), chain_hlocks_used(), BOOTSTRAP_CHAIN_HLOCKS_CAP,
362 | (BOOTSTRAP_CHAIN_HLOCKS_CAP * sizeof(u16)) / 1024);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
kernel/locking/lockdep_proc.c:387:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
387 | seq_printf(m, " stack-trace entries: %11lu [bootstrap: %lu/%lu, %zu kB]\n",
| ~~^
| |
| unsigned int
| %lu
388 | nr_stack_trace_entries, nr_stack_trace_entries, BOOTSTRAP_STACK_TRACE_CAP,
389 | (BOOTSTRAP_STACK_TRACE_CAP * sizeof(unsigned long)) / 1024);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
vim +298 kernel/locking/lockdep_proc.c
287
288 {
289 unsigned int lc_chunks = 0;
290 size_t lc_chunk_sz = 0, lc_tail_used = 0;
291
292 lockdep_class_stats(&lc_chunks, &lc_chunk_sz, &lc_tail_used);
293 if (lc_chunks) {
294 seq_printf(m, " lock-classes: %11lu [dynamic: %u x %zu kB, tail: %zu kB/%zu kB]\n",
295 nr_lock_classes, lc_chunks, lc_chunk_sz / 1024,
296 lc_tail_used / 1024, lc_chunk_sz / 1024);
297 } else {
> 298 seq_printf(m, " lock-classes: %11lu [bootstrap: %lu/%lu, %zu kB]\n",
299 nr_lock_classes, nr_lock_classes, BOOTSTRAP_LOCK_CLASSES_CAP,
300 (BOOTSTRAP_LOCK_CLASSES_CAP * sizeof(struct lock_class)) / 1024);
301 }
302 }
303 seq_printf(m, " dynamic-keys: %11lu\n",
304 nr_dynamic_keys);
305 {
306 unsigned int fp_chunks = 0;
307 size_t fp_chunk_sz = 0, fp_tail_used = 0;
308
309 lockdep_pool_stats(&fp_chunks, &fp_chunk_sz, &fp_tail_used);
310 if (fp_chunks) {
311 seq_printf(m, " direct dependencies: %11lu [dynamic: %u x %zu kB, tail: %zu kB/%zu kB]\n",
312 nr_list_entries, fp_chunks, fp_chunk_sz / 1024,
313 fp_tail_used / 1024, fp_chunk_sz / 1024);
314 } else {
315 seq_printf(m, " direct dependencies: %11lu [bootstrap: %lu/%lu, %zu kB]\n",
316 nr_list_entries, nr_list_entries, BOOTSTRAP_LOCKDEP_ENTRIES_CAP,
317 (BOOTSTRAP_LOCKDEP_ENTRIES_CAP * sizeof(struct lock_list)) / 1024);
318 }
319 }
320 seq_printf(m, " indirect dependencies: %11lu\n",
321 sum_forward_deps);
322
323 /*
324 * Total number of dependencies:
325 *
326 * All irq-safe locks may nest inside irq-unsafe locks,
327 * plus all the other known dependencies:
328 */
329 seq_printf(m, " all direct dependencies: %11lu\n",
330 nr_irq_unsafe * nr_irq_safe +
331 nr_hardirq_unsafe * nr_hardirq_safe +
332 nr_list_entries);
333
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-08-18 2:29 [jimc:folio-pool-v2-lockdep 21/21] kernel/locking/lockdep_proc.c:298:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' kernel test robot
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