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Date:   Thu, 14 Apr 2022 14:24:57 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Aleksandr Nogikh <nogikh@google.com>
Cc:     kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org,
        dvyukov@google.com, andreyknvl@gmail.com, elver@google.com,
        glider@google.com, tarasmadan@google.com, bigeasy@linutronix.de
Subject: Re: [PATCH v3] kcov: don't generate a warning on vm_insert_page()'s
 failure
Message-Id: <20220414142457.d22ce3a11920dc943001d737@linux-foundation.org>
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On Fri,  1 Apr 2022 18:25:12 +0000 Aleksandr Nogikh <nogikh@google.com> wrote:

> vm_insert_page()'s failure is not an unexpected condition, so don't do
> WARN_ONCE() in such a case.
> 
> Instead, print a kernel message and just return an error code.

(hm, I thought I asked this before but I can't find it)

Under what circumstances will this failure occur?

Why do we emit a message at all?  What action can the user take upon
seeing the message?

Do we have a Fixes: for this?

From the info provided thus far I'm unable to determine whether a
-stable backport is needed.  What are your thoughts on this?