tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   798d276b39e984345d52b933a900a71fa0815928
commit: e435b85a4aea7a82259105d5d8025655460052e1 [2908/3314] mm, page_owner: add page_owner_stacks file to print out only stacks and their counte
config: x86_64-randconfig-m001
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305182345.LTMlWG84-lkp@intel.com/

smatch warnings:
lib/stackdepot.c:544 stack_print() warn: unsigned 'stack->size' is never less than zero.

vim +544 lib/stackdepot.c

   537	
   538	int stack_print(struct seq_file *m, void *v)
   539	{
   540		char *buf;
   541		int ret = 0;
   542		struct stack_record *stack = v;
   543	
 > 544		if (!stack->size || stack->size < 0 ||
   545		    stack->size > PAGE_SIZE || stack->handle.valid != 1 ||
   546		    refcount_read(&stack->count) < 1)
   547			return 0;
   548	
   549		buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
   550		ret += stack_trace_snprint(buf, PAGE_SIZE, stack->entries, stack->size, 0);
   551		scnprintf(buf + ret, PAGE_SIZE - ret, "stack count: %d\n\n",
   552			  refcount_read(&stack->count));
   553		seq_printf(m, buf);
   554		seq_puts(m, "\n\n");
   555		kfree(buf);
   556	
   557		return 0;
   558	}
   559	#endif
   560	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki