Re: [PATCH] block: bfq fix blkio cgroup leakage v3

2020-07-27 Thread Oleksandr Natalenko
On 27.07.2020 10:01, Dmitry Monakhov wrote: commit db37a34c563b ("block, bfq: get a ref to a group when adding it to a service tree") introduce leak forbfq_group and blkcg_gq objects because of get/put imbalance. See trace balow: -> blkg_alloc -> bfq_pq_alloc -> bfqg_get (+1) ->bfq_activa

[PATCH] block: bfq fix blkio cgroup leakage v3

2020-07-27 Thread Dmitry Monakhov
commit db37a34c563b ("block, bfq: get a ref to a group when adding it to a service tree") introduce leak forbfq_group and blkcg_gq objects because of get/put imbalance. See trace balow: -> blkg_alloc -> bfq_pq_alloc -> bfqg_get (+1) ->bfq_activate_bfqq ->bfq_activate_requeue_entity -