linux-kernel - Re: [PATCH v6] taskstats: fix data-race

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Message-ID: <20191024134319.GA12693@andrea.guest.corp.microsoft.com>
Date:   Thu, 24 Oct 2019 15:43:19 +0200
From:   Andrea Parri <parri.andrea@...il.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Christian Brauner <christian.brauner@...ntu.com>,
        Will Deacon <will@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, bsingharora@...il.com,
        Marco Elver <elver@...gle.com>,
        stable <stable@...r.kernel.org>,
        syzbot <syzbot+c5d03165a1bd1dead0c1@...kaller.appspotmail.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: [PATCH v6] taskstats: fix data-race

> But why? I think kernel contains lots of such cases and it seems to be
> officially documented by the LKMM:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/memory-model/Documentation/explanation.txt
> address dependencies and ppo

Well, that same documentation also alerts about some of the pitfalls
developers can incur while relying on dependencies.  I'm sure you're
more than aware of some of the debate surrounding these issues.

  Andrea