Re: [PATCH 2/4] pktcdvd: kill mutex_lock_nested() usage

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

Hi Kent,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/locking/core]
[also build test ERROR on net/main net-next/main linus/master v6.8-rc1 next-20240125]
[cannot apply to horms-ipvs/master]
[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/Kent-Overstreet/fs-pipe-Convert-to-lockdep_cmp_fn/20240127-101832
base:   tip/locking/core
patch link:    https://lore.kernel.org/r/20240127020833.487907-3-kent.overstreet%40linux.dev
patch subject: [PATCH 2/4] pktcdvd: kill mutex_lock_nested() usage
config: x86_64-randconfig-161-20240127 (https://download.01.org/0day-ci/archive/20240128/202401281405.72SjSYnP-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240128/202401281405.72SjSYnP-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/202401281405.72SjSYnP-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/locking/lockdep.c: In function 'lockdep_ptr_order_cmp_fn':
>> kernel/locking/lockdep.c:4925:9: error: implicit declaration of function 'cmp_int'; did you mean 'smp_init'? [-Werror=implicit-function-declaration]
    4925 |  return cmp_int((unsigned long) a, (unsigned long) b);
         |         ^~~~~~~
         |         smp_init
   cc1: some warnings being treated as errors


vim +4925 kernel/locking/lockdep.c

  4920	
  4921	#ifdef CONFIG_PROVE_LOCKING
  4922	int lockdep_ptr_order_cmp_fn(const struct lockdep_map *a,
  4923				     const struct lockdep_map *b)
  4924	{
> 4925		return cmp_int((unsigned long) a, (unsigned long) b);
  4926	}
  4927	

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