linux-kernel - Re: [PATCH] mm: mmap_lock: fix use-after-free race and css ref leak in tracepoints

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Message-ID: <CALvZod5mAtes0T5DFCgjU+CKVBVOdYc=jPFHXvAU+LzDqGXomg@mail.gmail.com>
Date:   Tue, 1 Dec 2020 17:11:50 -0800
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Axel Rasmussen <axelrasmussen@...gle.com>,
        Tejun Heo <tj@...nel.org>, Greg Thelen <gthelen@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Chinwen Chang <chinwen.chang@...iatek.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        David Rientjes <rientjes@...gle.com>,
        Davidlohr Bueso <dbueso@...e.de>,
        Ingo Molnar <mingo@...hat.com>, Jann Horn <jannh@...gle.com>,
        Laurent Dufour <ldufour@...ux.ibm.com>,
        Michel Lespinasse <walken@...gle.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Vlastimil Babka <vbabka@...e.cz>,
        Yafang Shao <laoar.shao@...il.com>,
        "David S . Miller" <davem@...emloft.net>, dsahern@...nel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jakub Kicinski <kuba@...nel.org>, liuhangbin@...il.com,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>
Subject: Re: [PATCH] mm: mmap_lock: fix use-after-free race and css ref leak
 in tracepoints

On Tue, Dec 1, 2020 at 5:07 PM Steven Rostedt <rostedt@...dmis.org> wrote:
>
> On Tue, 1 Dec 2020 16:36:32 -0800
> Shakeel Butt <shakeelb@...gle.com> wrote:
>
> > SGTM but note that usually Andrew squash all the patches into one
> > before sending to Linus. If you plan to replace the path buffer with
> > integer IDs then no need to spend time fixing buffer related bug.
>
> I don't think Andrew squashes all the patches. I believe he sends Linus
> a patch series.

I am talking about the patch and the following fixes to that patch.
Those are usually squashed into one patch.