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

kernel test robot
2024-01-28T04:30:17Z

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]
[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: mips-randconfig-r063-20240127 (https://download.01.org/0day-ci/archive/20240128/202401281210.ZqZ0bZlb-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240128/202401281210.ZqZ0bZlb-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/202401281210.ZqZ0bZlb-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/locking/lockdep.c:4925:9: error: call to undeclared function 'cmp_int'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
return cmp_int((unsigned long) a, (unsigned long) b);
^
kernel/locking/lockdep.c:4925:9: note: did you mean 'smp_init'?
include/linux/smp.h:225:20: note: 'smp_init' declared here
static inline void smp_init(void) { }
^
1 error generated.

vim +/cmp_int +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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0-DAY CI Kernel Test Service