linux-kernel - Re: [PATCH v6 4/7] cgroup: cgroup v2 freezer

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

Message-ID: <20190125134600.GB18991@redhat.com>
Date:   Fri, 25 Jan 2019 14:46:00 +0100
From:   Oleg Nesterov <oleg@...hat.com>
To:     Roman Gushchin <guroan@...il.com>
Cc:     Tejun Heo <tj@...nel.org>, kernel-team@...com,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        Roman Gushchin <guro@...com>
Subject: Re: [PATCH v6 4/7] cgroup: cgroup v2 freezer

On 01/25, Oleg Nesterov wrote:
>
> One of the task is killed, it calls leave_frozen(). If I read this code path
> correctly, only ->nr_frozen_tasks will be decremented, so "frozen" will be
> "false" when cgroup_update_frozen() is called.

forgot to mention...

and I do not think cgroup_exit() can "fix" this, see another email I sent a minute
ago...

Oleg.