linux-kernel - Re: [PATCH 0/8] Fix VMA tree modification under mmap read lock

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Date:   Mon, 27 Mar 2023 15:48:00 -0400
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Matthew Wilcox <willy@...radead.org>,
        Suren Baghdasaryan <surenb@...gle.com>
Subject: Re: [PATCH 0/8] Fix VMA tree modification under mmap read lock

* Andrew Morton <akpm@...ux-foundation.org> [230327 15:35]:
> On Mon, 27 Mar 2023 14:55:24 -0400 "Liam R. Howlett" <Liam.Howlett@...cle.com> wrote:
> 
> > These patches have been in -next since next-20230301, and have received
> > intensive testing in Android as part of the RCU page fault patchset.
> > They were also sent as part of the "Per-VMA locks" v4 patch series.
> > Patches 1 to 7 are bug fixes for RCU mode of the tree and patch 8 enables
> > RCU mode for the tree.
> 
> What's happening here?  I assume you've decided that the first 8
> patches of the "Per-VMA locks v4" series should be fast-tracked into
> 6.3-rcX and backported?  And we retain the rest of that series for
> 6.4-rc1?

Yes, they need to be backported and fast tracked to fix the issue syzbot
found.

> 
> Patch [3/8] hasn't come through to me, to linux-mm or to linux-kernel.

Should arrive shortly, I received it from one of the ML.