linux-kernel - Re: fs/proc: Crash observed in next

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Message-ID: <64ff5437-a3f9-2041-5110-06ec4dd67b2a@free.fr>
Date:   Thu, 18 Apr 2019 11:24:32 +0200
From:   Marc Gonzalez <marc.w.gonzalez@...e.fr>
To:     Jitendra Sharma <shajit@...eaurora.org>
Cc:     Kees Cook <keescook@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: fs/proc: Crash observed in next_tgid (fs/proc/base.c)

NB: it is preferable to avoid top-posting here.

On 17/04/2019 18:58, Jitendra Sharma wrote:

> Kernel version: 4.14.83

NB2: 4.14.83 is obsolete, as it stands 2255 patches behind the tip of
linux-4.14.y (though only 4 patches in fs/proc).

NB3: 4.14 is 108499(!!) patches behind v5.1-rc5 (latest release). It makes
sense to test on a recent kernel, in case someone has solved the issue along
the way (then the bisecting fun can begin).

> Test case: Not some specific test case. Issue reproduced while doing 
> monkey testing for very long hours.

I'm not sure what "monkey testing" entails...

Any relation to the infinite monkey theorem?
https://en.wikipedia.org/wiki/Infinite_monkey_theorem

Regards.