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.g... 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(a)intel.com&gt; All errors (new ones prefixed by >>): 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 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@lists.01.org