Subject: Re: [PATCH v1 net-next 1/3] rtnetlink: Add per-net RTNL.

From: kernel test robot <[email-masked]>
Date: Thu, 3 Oct 2024 01:28:13 +0800

Hi Kuniyuki,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/rtnetlink-Add-per-net-RTNL/20241001-043219
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240930202524.59357-2-kuniyu%40amazon.com
patch subject: [PATCH v1 net-next 1/3] rtnetlink: Add per-net RTNL.
config: hexagon-randconfig-r132-20241002 (https://download.01.org/0day-ci/archive/20241003/[email-masked]/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce: (https://download.01.org/0day-ci/archive/20241003/[email-masked]/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 <[email-masked]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email-masked]/

All errors (new ones prefixed by >>):

   WARNING: unmet direct dependencies detected for GET_FREE_REGION
   Depends on [n]: SPARSEMEM [=n]
   Selected by [y]:
   - RESOURCE_KUNIT_TEST [=y] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y]
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:14:
   In file included from include/linux/sem.h:5:
   In file included from include/uapi/linux/sem.h:5:
   In file included from include/linux/ipc.h:7:
   In file included from include/linux/rhashtable-types.h:15:
   In file included from include/linux/mutex.h:17:
>> include/linux/lockdep.h:413:52: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   413 | void lockdep_set_lock_cmp_fn(struct lockdep_map *, lock_cmp_fn, lock_print_fn);
   |                                                    ^
   |                                                    int
   include/linux/lockdep.h:413:65: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   413 | void lockdep_set_lock_cmp_fn(struct lockdep_map *, lock_cmp_fn, lock_print_fn);
   |                                                                 ^
   |                                                                 int
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
   98 |                 return (set->sig[3] | set->sig[2] |
   |                         ^        ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
   98 |                 return (set->sig[3] | set->sig[2] |
   |                                       ^        ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   114 |                 return  (set1->sig[3] == set2->sig[3]) &&
   |                          ^         ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:114:27: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   114 |                 return  (set1->sig[3] == set2->sig[3]) &&
   |                                          ^         ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:115:5: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   115 |                         (set1->sig[2] == set2->sig[2]) &&
   |                          ^         ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:115:21: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   115 |                         (set1->sig[2] == set2->sig[2]) &&
   |                                          ^         ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:157:1: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   157 | _SIG_SET_BINOP(sigorsets, _sig_or)
   | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/signal.h:138:8: note: expanded from macro '_SIG_SET_BINOP'
   138 |                 a3 = a->sig[3]; a2 = a->sig[2];                               |                      ^      ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
   62 |         unsigned long sig[_NSIG_WORDS];
   |         ^
   In file included from arch/hexagon/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:157:1: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PROVE_LOCKING
   Depends on [n]: DEBUG_KERNEL [=n] && LOCK_DEBUGGING_SUPPORT [=y]
   Selected by [y]:
   - DEBUG_NET_SMALL_RTNL [=y]
   WARNING: unmet direct dependencies detected for GET_FREE_REGION
   Depends on [n]: SPARSEMEM [=n]
   Selected by [y]:
   - RESOURCE_KUNIT_TEST [=y] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y]

vim +/int +413 include/linux/lockdep.h

fbb9ce9530fd9b Ingo Molnar     2006-07-03  411  
eb1cfd09f788e3 Kent Overstreet 2023-05-09  412  #ifdef CONFIG_PROVE_LOCKING
eb1cfd09f788e3 Kent Overstreet 2023-05-09 @413  void lockdep_set_lock_cmp_fn(struct lockdep_map *, lock_cmp_fn, lock_print_fn);
eb1cfd09f788e3 Kent Overstreet 2023-05-09  414  

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