linux-kernel - Re: [PATCH] printk: Monitor change of console loglevel.

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Date:   Tue, 14 May 2019 18:19:17 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Dmitry Vyukov <dvyukov@...gle.com>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] printk: Monitor change of console loglevel.

On (05/11/19 00:19), Tetsuo Handa wrote:
> We are seeing syzbot reports [1] where printk() messages prior to panic()
> are missing for unknown reason. To test whether it is due to some testcase
> changing console loglevel, let's panic() as soon as console loglevel has
> changed. This patch is intended for testing on linux-next.git only, and
> will be removed after we found what is wrong.

Clone linux-next, apply the patch, push to a github/gitlab repo,
configure syzbot to pull from github/gitlab? Adding temp patches
to linux-next is hard and apparently not exactly what linux-next
is used for these days.

	-ss