linux-kernel - Re: [PATCH 1/1] alloc_tag: allocate percpu counters for module tags dynamically

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Message-Id: <20250519172132.c46b910bc10857c706866357@linux-foundation.org>
Date: Mon, 19 May 2025 17:21:32 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Suren Baghdasaryan <surenb@...gle.com>
Cc: kent.overstreet@...ux.dev, 00107082@....com, dennis@...nel.org,
 tj@...nel.org, cl@...two.org, pasha.tatashin@...een.com,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] alloc_tag: allocate percpu counters for module tags
 dynamically

On Mon, 19 May 2025 16:13:28 -0700 Suren Baghdasaryan <surenb@...gle.com> wrote:

> > > Fixes: 0db6f8d7820a ("alloc_tag: load module tags into separate contiguous memory")
> > > Reported-by: David Wang <00107082@....com>
> > > Closes: https://lore.kernel.org/all/20250516131246.6244-1-00107082@163.com/
> > > Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
> > > ---
> > >  include/linux/alloc_tag.h | 12 ++++++
> > >  include/linux/codetag.h   |  8 ++--
> > >  include/linux/percpu.h    |  4 --
> > >  lib/alloc_tag.c           | 87 +++++++++++++++++++++++++++++++--------
> > >  lib/codetag.c             |  5 ++-
> > >  5 files changed, 88 insertions(+), 28 deletions(-)
> >
> > Should we backport this fix into -stable kernels?  I'm thinking yes.
> 
> Yes, I should have CC'ed stable. The patch this one is fixing was
> first introduced in 6.13. I just tried and it applies cleanly to
> stable linux-6.13.y and linux-6.14.y.
> Should I forward this email to stable or send a separate patch to them?

I added cc:stable to the mm.git copy so all is OK.  That's the usual
workflow.