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From: SJ Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: SJ Park <sj@kernel.org>,
	"# 6 . 14 . x" <stable@vger.kernel.org>,
	damon@lists.linux.dev,
	linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: Re: [PATCH 0/6] samples/damon: handle damon_{start,stop}() failures
Date: Mon, 29 Jun 2026 06:26:40 -0700
Message-ID: <20260629132641.159851-1-sj@kernel.org>
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On Sun, 28 Jun 2026 21:49:00 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:

> On Sun, 28 Jun 2026 14:54:39 -0700 SJ Park <sj@kernel.org> wrote:
> 
> > All DAMON sample modules are not correctly handling failures from
> > damon_start().  Among those, mtier also has an additional problem for
> > handling of damon_stop() failures.  wsse and prcl also have a problem in
> > their damon_call() failure handling.  As a result, memory leaks, next
> > DAMON operation disruptions, and use-after-free can happen.  Fix those.
> > 
> > Note that only the damon_start() failure caused issues can reliably be
> > reproduced.  Reproducing those issues require the admin permission,
> > though.
> 
> So it doesn't seem that we need to fast-track all this into 7.2-rcX?

Yes, I think it is fine as long as they can be merged into necessary stable
kernels in reasonable time.  And 7.3 also sounds reasonable to me.


Thanks,
SJ