linux-kernel - Re: [RFC][PATCH] ptrace: Don't change _

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: <20220421115058.GN2731@worktop.programming.kicks-ass.net>
Date:   Thu, 21 Apr 2022 13:50:58 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Oleg Nesterov <oleg@...hat.com>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>, rjw@...ysocki.net,
        mingo@...nel.org, vincent.guittot@...aro.org,
        dietmar.eggemann@....com, rostedt@...dmis.org, mgorman@...e.de,
        bigeasy@...utronix.de, Will Deacon <will@...nel.org>,
        linux-kernel@...r.kernel.org, tj@...nel.org,
        linux-pm@...r.kernel.org
Subject: Re: [RFC][PATCH] ptrace: Don't change __state

On Thu, Apr 21, 2022 at 12:49:43PM +0200, Oleg Nesterov wrote:
> On 04/21, Peter Zijlstra wrote:
> >
> > As such, I've taken the liberty of munging yours and Oleg's approach
> > together. I've yet to actually test this but it looks feasible.
> 
> Agreed, but I am a but confused. Is it on top of 1/5? Doesn't look so,
> and I can't apply it with or without 1/5. So I am not sure I understand
> what exactly it does.

Yes, it is on top of a modified 1, I mean to post an updated and tested
series later today.

Basically it does the TRACED_QUIESCE thing from your patch, and then
does the DELAY_WAKEKILL thing from Eric's patch.