Firstly, reset env.dst_cpu/dst_rq to this_cpu/this_rq, because it could
have changed in 'some pinned' case. Otherwise, should_we_balance() can
stop balancing beforehand.

Secondly, reset env.flags, because it can have LBF_SOME_PINNED set.

Thirdly, reset env.dst_grpmask cpus in env.cpus to allow handling 'some
pinned' case when pulling tasks from a new busiest cpu.

Signed-off-by: Vladimir Davydov <[email protected]>
---
 kernel/sched/fair.c |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index cd59640..d840e51 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5289,8 +5289,16 @@ more_balance:
                if (unlikely(env.flags & LBF_ALL_PINNED)) {
                        cpumask_clear_cpu(cpu_of(busiest), cpus);
                        if (!cpumask_empty(cpus)) {
-                               env.loop = 0;
-                               env.loop_break = sched_nr_migrate_break;
+                               env.dst_cpu     = this_cpu;
+                               env.dst_rq      = this_rq;
+                               env.flags       = 0;
+                               env.loop        = 0;
+                               env.loop_break  = sched_nr_migrate_break;
+
+                               /* Reset cpus cleared in LBF_SOME_PINNED case */
+                               if (env.dst_grpmask)
+                                       cpumask_or(cpus, cpus, env.dst_grpmask);
+
                                goto redo;
                        }
                        goto out_balanced;
-- 
1.7.10.4

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