linux-kernel - Re: [PATCH] ftrace: Add missing check for existing hwlat thread

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]

Date:   Wed, 1 Aug 2018 22:07:12 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Steven Rostedt <rostedt@...dmis.org>
cc:     Erica Bugden <erica.bugden@...utronix.de>,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        anna-maria@...utronix.de, bigeasy@...utronix.de
Subject: Re: [PATCH] ftrace: Add missing check for existing hwlat thread

On Wed, 1 Aug 2018, Steven Rostedt wrote:

> On Wed, 1 Aug 2018 21:59:38 +0200 (CEST)
> Thomas Gleixner <tglx@...utronix.de> wrote:
> 
> > > This looks like it is treating the symptom and not the disease.  
> > 
> > My bad. We looked at the other instances of tracers and they all have
> > protection against this kind of call sequence ...
> 
> Probably because they were all fixing the symptom ;-)

:)

> I'm going to keep Erica's patch and add a WARN_ON() to it just in case.
> But can you still check if the patch I gave fixes it too?

Sure