[dynticks:timers/urgent-v2 2/7] kernel/signal.c:1443:6: error: redefinition of 'lockdep_assert_task_sighand_held'

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git timers/urgent-v2
head:   9cc6f1cc0e96053d709dd05b64ba5796a5b13664
commit: 11dfbcfa6f6a68fe394f3eeecb9c4b6dad855777 [2/7] posix-cpu-timers: Assert task sighand is locked while starting cputime counter
config: m68k-randconfig-s031-20210622 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git/commit/?id=11dfbcfa6f6a68fe394f3eeecb9c4b6dad855777
        git remote add dynticks https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
        git fetch --no-tags dynticks timers/urgent-v2
        git checkout 11dfbcfa6f6a68fe394f3eeecb9c4b6dad855777
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=m68k 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> kernel/signal.c:1443:6: error: redefinition of 'lockdep_assert_task_sighand_held'
    1443 | void lockdep_assert_task_sighand_held(struct task_struct *task)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/sched/cputime.h:5,
                    from kernel/signal.c:22:
   include/linux/sched/signal.h:715:20: note: previous definition of 'lockdep_assert_task_sighand_held' was here
     715 | static inline void lockdep_assert_task_sighand_held(struct task_struct *task) { }
         |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/lockdep_assert_task_sighand_held +1443 kernel/signal.c

  1442	
> 1443	void lockdep_assert_task_sighand_held(struct task_struct *task)
  1444	{
  1445		struct sighand_struct *sighand;
  1446	
  1447		rcu_read_lock();
  1448		sighand = rcu_dereference(task->sighand);
  1449		if (sighand)
  1450			lockdep_assert_held(&sighand->siglock);
  1451		else
  1452			WARN_ON_ONCE(1);
  1453		rcu_read_unlock();
  1454	}
  1455	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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