linux-ext4 - Re: [PATCH v4 16/24] locking/lockdep, cpu/hotplus: Use a weaker annotation in AP 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:   Sat, 5 Mar 2022 08:36:33 +0900
From:   Byungchul Park <byungchul.park@....com>
To:     Sergei Shtylyov <sergei.shtylyov@...il.com>
Cc:     torvalds@...ux-foundation.org, damien.lemoal@...nsource.wdc.com,
        linux-ide@...r.kernel.org, adilger.kernel@...ger.ca,
        linux-ext4@...r.kernel.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        will@...nel.org, tglx@...utronix.de, rostedt@...dmis.org,
        joel@...lfernandes.org, sashal@...nel.org, daniel.vetter@...ll.ch,
        chris@...is-wilson.co.uk, duyuyang@...il.com,
        johannes.berg@...el.com, tj@...nel.org, tytso@....edu,
        willy@...radead.org, david@...morbit.com, amir73il@...il.com,
        bfields@...ldses.org, gregkh@...uxfoundation.org,
        kernel-team@....com, linux-mm@...ck.org, akpm@...ux-foundation.org,
        mhocko@...nel.org, minchan@...nel.org, hannes@...xchg.org,
        vdavydov.dev@...il.com, sj@...nel.org, jglisse@...hat.com,
        dennis@...nel.org, cl@...ux.com, penberg@...nel.org,
        rientjes@...gle.com, vbabka@...e.cz, ngupta@...are.org,
        linux-block@...r.kernel.org, paolo.valente@...aro.org,
        josef@...icpanda.com, linux-fsdevel@...r.kernel.org,
        viro@...iv.linux.org.uk, jack@...e.cz, jack@...e.com,
        jlayton@...nel.org, dan.j.williams@...el.com, hch@...radead.org,
        djwong@...nel.org, dri-devel@...ts.freedesktop.org,
        airlied@...ux.ie, rodrigosiqueiramelo@...il.com,
        melissa.srw@...il.com, hamohammed.sa@...il.com
Subject: Re: [PATCH v4 16/24] locking/lockdep, cpu/hotplus: Use a weaker
 annotation in AP thread

On Fri, Mar 04, 2022 at 10:28:57PM +0300, Sergei Shtylyov wrote:
> On 3/4/22 10:06 AM, Byungchul Park wrote:
> 
> > cb92173d1f0 (locking/lockdep, cpu/hotplug: Annotate AP thread) was
> 
>    You need to enclose the commit summary in (""), not just (). :-)

Thank you! I will!

> > introduced to make lockdep_assert_cpus_held() work in AP thread.
> > 
> > However, the annotation is too strong for that purpose. We don't have to
> > use more than try lock annotation for that.
> > 
> > Furthermore, now that Dept was introduced, false positive alarms was
> > reported by that. Replaced it with try lock annotation.
> > 
> > Signed-off-by: Byungchul Park <byungchul.park@....com>
> [...]
> 
> MBR, Sergey