linux-kernel - [PATCH v2 0/3] Soft limit memory management bug fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 17 Feb 2021 12:41:33 -0800
From:   Tim Chen <tim.c.chen@...ux.intel.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...e.cz>,
        Vladimir Davydov <vdavydov.dev@...il.com>
Cc:     Tim Chen <tim.c.chen@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Ying Huang <ying.huang@...el.com>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/3] Soft limit memory management bug fixes 

During testing of tiered memory management based on memory soft limit,
I found three issues with memory management using cgroup based soft
limit in the mainline code.  Fix the issues with the three patches in
this series.  Also updated patch 3 per Johannes' comments on the first
version of this patch.

Thanks.

Tim

Changelog:
v2
1. Do soft limit tree uncharge update in batch of the same node only
for v1 cgroups that have a soft limit.  Batching in nodes is only
relevant for cgroup v1 that has per node soft limit tree. 

Tim Chen (3):
  mm: Fix dropped memcg from mem cgroup soft limit tree
  mm: Force update of mem cgroup soft limit tree on usage excess
  mm: Fix missing mem cgroup soft limit tree updates

 mm/memcontrol.c | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

-- 
2.20.1