linux-kernel - Re: [NEEDS-REVIEW] [RFC PATCH] do_exit(): panic() recursion detected

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Message-ID: <9d601a43-302a-7e26-15e7-53222b832faa@intel.com>
Date:   Mon, 7 Dec 2020 06:27:01 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Vladimir Kondratiev <vladimir.kondratiev@...ux.intel.com>,
        Jonathan Corbet <corbet@....net>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        "Guilherme G. Piccoli" <gpiccoli@...onical.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Kars Mulder <kerneldev@...smulder.nl>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Joe Perches <joe@...ches.com>,
        Rafael Aquini <aquini@...hat.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Alexei Starovoitov <ast@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Michel Lespinasse <walken@...gle.com>,
        Jann Horn <jannh@...gle.com>, chenqiwu <chenqiwu@...omi.com>,
        Minchan Kim <minchan@...nel.org>,
        Christophe Leroy <christophe.leroy@....fr>
Cc:     Vladimir Kondratiev <vladimir.kondratiev@...el.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: Re: [NEEDS-REVIEW] [RFC PATCH] do_exit(): panic() recursion detected

On 12/7/20 4:40 AM, Vladimir Kondratiev wrote:
> Recursive do_exit() is symptom of compromised kernel integrity.
> For safety critical systems, it may be better to
> panic() in this case to minimize risk.

This changelog is still woefully inadequate.  It doesn't really describe
the problem which is being fixed.  Patches are generally not accepted by
batting around things like "safety-critical".

> Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@...el.com>
> Change-Id: I42f45900a08c4282c511b05e9e6061360d07db60

What's this Change-Id?  Is this for some system outside of Linux?  If
so, we don't need that in kernel changelogs.