linux-kernel - Re: [syzbot? printk?] no WARN_ON() messages printed before "Kernel panic

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Date:   Mon, 18 Mar 2019 23:09:37 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: [syzbot? printk?] no WARN_ON() messages printed before "Kernel
 panic - not syncing: panic_on_warn set ..."

On (03/18/19 14:42), Dmitry Vyukov wrote:
> > There is also SYSLOG_ACTION_CONSOLE_OFF, which disables logging.
> 
> That one I somehow figured earlier, here is the exact check:
> https://github.com/google/syzkaller/blob/61f9c92f3a465025d2b9d91f429aaec968aeaa2a/sys/linux/init.go#L152-L155

OK, cool.
You probably would also want to add SYSLOG_ACTION_CLEAR to the list.

	-ss