netdev - [PATCH net v3 0/3] Fix Qdisc destroy issues caused by adding fine-grained locking to filter API

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Date:   Tue, 24 Sep 2019 18:51:15 +0300
From:   Vlad Buslov <vladbu@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        davem@...emloft.net, Vlad Buslov <vladbu@...lanox.com>
Subject: [PATCH net v3 0/3] Fix Qdisc destroy issues caused by adding fine-grained locking to filter API

TC filter API unlocking introduced several new fine-grained locks. The
change caused sleeping-while-atomic BUGs in several Qdiscs that call cls
APIs which need to obtain new mutex while holding sch tree spinlock. This
series fixes affected Qdiscs by ensuring that cls API that became sleeping
is only called outside of sch tree lock critical section.

Vlad Buslov (3):
  net: sched: sch_htb: don't call qdisc_put() while holding tree lock
  net: sched: multiq: don't call qdisc_put() while holding tree lock
  net: sched: sch_sfb: don't call qdisc_put() while holding tree lock

 net/sched/sch_htb.c    |  4 +++-
 net/sched/sch_multiq.c | 23 ++++++++++++++++-------
 net/sched/sch_sfb.c    |  7 ++++---
 3 files changed, 23 insertions(+), 11 deletions(-)

-- 
2.21.0