linux-kernel - Re: [PATCH v2 4/4] locktorture: With nested locks, occasionally skip main lock

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: <20230205190548.7auywdoagy6txpla@offworld>
Date:   Sun, 5 Feb 2023 11:05:48 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     John Stultz <jstultz@...gle.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Josh Triplett <josh@...htriplett.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>
Subject: Re: [PATCH v2 4/4] locktorture: With nested locks, occasionally skip
 main lock

On Fri, 03 Feb 2023, John Stultz wrote:

>@@ -754,21 +755,28 @@ static int lock_torture_writer(void *arg)
>			schedule_timeout_uninterruptible(1);
>
>		lockset_mask = torture_random(&rand);
>+		skip_main_lock = nlocks && !(torture_random(&rand) % 100);

For the sake of future readers of locktorture.c, this deserves a comment
as to why we wanna skip the main lock (copy/paste from the changelog).

Thanks,
Davidlohr