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Date:   Fri, 9 Sep 2022 14:34:26 -0700
From:   Kees Cook <keescook@chromium.org>
To:     Florian Mayer <fmayer@google.com>
Cc:     Jonathan Corbet <corbet@lwn.net>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-doc@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
        Christian Brauner <brauner@kernel.org>,
        Evgenii Stepanov <eugenis@google.com>,
        Peter Collingbourne <pcc@google.com>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH RESEND] Add sicode to /proc/<PID>/stat.
Message-ID: <202209091432.5FEEE461F7@keescook>
References: <20220909180617.374238-1-fmayer@google.com>
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On Fri, Sep 09, 2022 at 11:06:17AM -0700, Florian Mayer wrote:
> In order to enable additional debugging features, Android init needs a
> way to distinguish MTE-related SEGVs (with si_code of SEGV_MTEAERR)
> from other SEGVs. This is not possible with current APIs, neither by
> the existing information in /proc/<pid>/stat, nor via waitpid.

Normally no changes are made to "stat" any more. New additions are made
to "status" instead. Could it live there instead?

-Kees

-- 
Kees Cook