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Subject[paulmck-rcu:dev.2021.11.10a 81/96] kernel/rcu/tasks.h:181:25: sparse: sparse: incorrect type in argument 1 (different modifiers)
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2021.11.10a
head: cfbd3769397911e7f1561fa57b4490b1e4fed9de
commit: a3ecbdd6d841a025ebe87b79c7538b4dc44edc94 [81/96] rcu-tasks: Use spin_lock_rcu_node() and friends
config: arm-randconfig-s032-20211115 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=a3ecbdd6d841a025ebe87b79c7538b4dc44edc94
git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
git fetch --no-tags paulmck-rcu dev.2021.11.10a
git checkout a3ecbdd6d841a025ebe87b79c7538b4dc44edc94
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm

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


sparse warnings: (new ones prefixed by >>)
kernel/rcu/update.c: note: in included file:
>> kernel/rcu/tasks.h:181:25: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct raw_spinlock [usertype] *lock @@ got struct raw_spinlock [noderef] * @@
kernel/rcu/tasks.h:181:25: sparse: expected struct raw_spinlock [usertype] *lock
kernel/rcu/tasks.h:181:25: sparse: got struct raw_spinlock [noderef] *

vim +181 kernel/rcu/tasks.h

165
166 // Initialize per-CPU callback lists for the specified flavor of
167 // Tasks RCU.
168 static void cblist_init_generic(struct rcu_tasks *rtp)
169 {
170 int cpu;
171 unsigned long flags;
172
173 raw_spin_lock_irqsave(&rtp->cbs_gbl_lock, flags);
174 rtp->percpu_enqueue_shift = ilog2(nr_cpu_ids);
175 for_each_possible_cpu(cpu) {
176 struct rcu_tasks_percpu *rtpcp = per_cpu_ptr(rtp->rtpcpu, cpu);
177
178 pr_info("%s initializing CPU %d rcu_tasks_percpu structure for %s\n", __func__, cpu, rtp->name);
179 WARN_ON_ONCE(!rtpcp);
180 if (cpu)
> 181 raw_spin_lock_init(&rtpcp->lock);
182 raw_spin_lock_irqsave_rcu_node(rtpcp, flags);
183 if (rcu_segcblist_empty(&rtpcp->cblist))
184 rcu_segcblist_init(&rtpcp->cblist);
185 raw_spin_unlock_irqrestore_rcu_node(rtpcp, flags);
186 }
187 raw_spin_unlock_irqrestore(&rtp->cbs_gbl_lock, flags);
188

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