tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.19 head: d2eeef58809494b0ea811ce578163de7a2478a22 commit: cfff5c5f9c0a9b899e38ed65fb7d925d6b5a5bfa [55/62] FROMLIST: sched/core: Update core scheduler queue when taking cpu online/offline compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; cppcheck warnings: (new ones prefixed by >>) kernel/sched/rt.c:743:10: warning: Same expression on both sides of '-='. [duplicateExpression] want -= want; ^ kernel/sched/rt.c:727:18: warning: Local variable iter shadows outer variable [shadowVar] struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i); ^ kernel/sched/rt.c:693:15: note: Shadowed declaration rt_rq_iter_t iter; ^ kernel/sched/rt.c:727:18: note: Shadow variable struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i); ^ kernel/sched/rt.c:699:2: warning: Uninitialized variable: iter [uninitvar] for_each_rt_rq(rt_rq, iter, rq) { ^ kernel/sched/rt.c:783:2: warning: Uninitialized variable: iter [uninitvar] for_each_rt_rq(rt_rq, iter, rq) { ^ for_each_rt_rq(rt_rq, iter, rq) { ^ kernel/sched/rt.c:1583:0: note: Variable 'rt_rq' is reassigned a value before the old one has been used. struct rt_rq *rt_rq = &rq->rt; ^ kernel/sched/rt.c:1587:2: note: Variable 'rt_rq' is reassigned a value before the old one has been used. for_each_rt_rq(rt_rq, iter, rq) { ^ kernel/sched/rt.c:1587:2: warning: Uninitialized variable: iter [uninitvar] for_each_rt_rq(rt_rq, iter, rq) { ^ vim +/rt_rq +1587 kernel/sched/rt.c 1575 1576 static void for_each_rt_task(struct rq *rq, 1577 void (*fn)(struct rq *rq, struct task_struct *p)) 1578 { 1579 rt_rq_iter_t iter; 1580 struct rt_prio_array *array; 1581 struct list_head *queue; 1582 int i; 1583 struct rt_rq *rt_rq = &rq->rt; 1584 struct sched_rt_entity *rt_se = NULL; 1585 struct task_struct *task; 1586 1588 array = &rt_rq->active; 1589 for (i = 0; i < MAX_RT_PRIO; i++) { 1590 queue = array->queue + i; 1591 list_for_each_entry(rt_se, queue, run_list) { 1592 if (rt_entity_is_task(rt_se)) { 1593 task = rt_task_of(rt_se); 1594 fn(rq, task); 1595 } 1596 } 1597 } 1598 } 1599 } 1600 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org