linux-kernel - Re: [patch 00/20] posix-timers: Fixes and cleanups

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Message-ID: <ZH3x7WMRI07b1PDS@2a01cb0980759691cfef005a85b365eb.ipv6.abo.wanadoo.fr>
Date:   Mon, 5 Jun 2023 16:32:13 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        syzbot+5c54bd3eb218bb595aa9@...kaller.appspotmail.com,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: [patch 00/20] posix-timers: Fixes and cleanups

Le Tue, Apr 25, 2023 at 08:48:55PM +0200, Thomas Gleixner a écrit :
> Hi!
> 
> A recent syzcaller/KCSAN report about a data race and an actually broken
> loop termination due to that race made me look deeper into the posix timer
> code.
> 
> Aside of the loop termination issue this unearthed another issue in the
> exit() path where timer deletion might livelock on RT enabled kernels.
> 
> While going through the code with a fine comb, I stumbled over another
> place which needs READ/WRITE_ONCE() annotations, tons of outdated and/or
> uncomprehensible comments and a bunch of silly code.
> 
> The series has therefore a larger set of cleanups on top of the two fixes.
> 
> It is based on
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
> 
> and also availble from git:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git timers/posix
> 
> Thanks,
> 
> 	tglx

Thanks for this extremely useful series!