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Date: Tue, 30 Jun 2026 13:45:40 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: "Arnd Bergmann" <arnd@arndb.de>
Cc: "SeongJae Park" <sj@kernel.org>, "Arnd Bergmann" <arnd@kernel.org>,
 "Nathan Chancellor" <nathan@kernel.org>, "Nick Desaulniers"
 <nick.desaulniers+lkml@gmail.com>, "Bill Wendling" <morbo@google.com>,
 "Justin Stitt" <justinstitt@google.com>, "Ravi Jonnalagadda"
 <ravis.opensrc@gmail.com>, "Quanmin Yan" <yanquanmin1@huawei.com>,
 damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
 llvm@lists.linux.dev
Subject: Re: [PATCH] mm/damon/core: reduce kernel stack usage
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On Tue, 30 Jun 2026 15:29:03 +0200 "Arnd Bergmann" <arnd@arndb.de> wrote:

> This is clearly an
> uphill battle, but kernel stack overflows are a real and build testing
> with a reasonably small limit is only one line of defense against these.

It's a worthy battle.

Reducing the default CONFIG_FRAME_WARN on various architectures will
help.  It's kinda trollish, but we should clamp down on this stuff and
having Arnd plugging away on his own isn't a good way!