linux-kernel - Re: [PATCH] devpts: Fix NULL pointer dereference in dcache

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Message-ID: <CAHk-=wih7tK-PoRTSUXgarpgR-WA8kN_voiMynQr8eysvPPgfA@mail.gmail.com>
Date:   Fri, 4 Oct 2019 09:52:49 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     Christian Brauner <christian.brauner@...ntu.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Will Deacon <will@...nel.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Amir Goldstein <amir73il@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Varad Gautam <vrd@...zon.de>, stable <stable@...r.kernel.org>,
        Jan Glauber <jglauber@...vell.com>
Subject: Re: [PATCH] devpts: Fix NULL pointer dereference in dcache_readdir()

On Fri, Oct 4, 2019 at 7:27 AM Al Viro <viro@...iv.linux.org.uk> wrote:
>
> FWIW, vfs.git#fixes (or #next.dcache) ought to deal with that one.

Dang, I thought this already got merged. But we only discussed it
extensively and I guess it got delayed by all the discussions about
possible fixes for the d_lock contention.

Al, mind sending me that one - and honestly, I'd take the "cursors off
the list at the end" patch too. That may not be stable material, but I
still think it's going to help the d_lock contention at least
partially in practice.

               Linus