Re: [PATCH/RFC] debugobjects/slub: Print slab info and backtrace.

[kernel test robot <lkp@intel.com>]

Hi,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on vbabka-slab/for-next]
[also build test ERROR on tip/core/debugobjects linus/master v6.6 next-20231103]
[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/greearb-candelatech-com/debugobjects-slub-Print-slab-info-and-backtrace/20231103-093945
base:   git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git for-next
patch link:    https://lore.kernel.org/r/20231103013704.1232723-1-greearb%40candelatech.com
patch subject: [PATCH/RFC] debugobjects/slub:  Print slab info and backtrace.
config: arc-randconfig-001-20231103 (https://download.01.org/0day-ci/archive/20231103/202311031516.58fWVP0y-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231103/202311031516.58fWVP0y-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/202311031516.58fWVP0y-lkp@intel.com/

All errors (new ones prefixed by >>):

   lib/debugobjects.c: In function 'set_track_prepare':
>> lib/debugobjects.c:237:22: error: implicit declaration of function 'stack_trace_save'; did you mean 'stack_depot_save'? [-Werror=implicit-function-declaration]
     237 |         nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 3);
         |                      ^~~~~~~~~~~~~~~~
         |                      stack_depot_save
   cc1: some warnings being treated as errors


vim +237 lib/debugobjects.c

   230	
   231	static noinline depot_stack_handle_t set_track_prepare(void)
   232	{
   233		depot_stack_handle_t trace_handle;
   234		unsigned long entries[DEBUG_OBJ_ADDRS_COUNT];
   235		unsigned int nr_entries;
   236	
 > 237		nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 3);
   238		trace_handle = stack_depot_save(entries, nr_entries, GFP_NOWAIT);
   239	
   240		return trace_handle;
   241	}
   242	

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