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From: James Wang <jnwang@linux.alibaba.com>
To: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	John Ogness <john.ogness@linutronix.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: kernel hang during reboot when cmdline include a non-exist console device
Date: Tue, 31 Aug 2021 22:38:42 +0800	[thread overview]
Message-ID: <e66f501a-0ba9-77f1-b5a2-9a759f8e00d6@linux.alibaba.com> (raw)
In-Reply-To: <YS490P27YM6UlB2z@alley>


在 2021/8/31 PM10:33, Petr Mladek 写道:
> On Tue 2021-08-31 21:45:05, James Wang wrote:
>> 在 2021/8/31 PM4:47, Sergey Senozhatsky 写道:
>>> And may I ask, just in case, if James can revert a revert of Petr's commit:
>>>
>>>          revert a91bd6223ecd46addc71ee6fcd432206d39365d2
>>>
>>> boot with wrong console argument and see if the kernel reboots without
>>> any problems.
>> After test, revert Petr's commit can work; reboot without any problem;
> Interesting, it looks like the panic() is really caused by missing
> stdout, stdin, and stderr, for the init process.
>
> Unfortunately, the fix is not easy, as described in the commit
> a91bd6223ecd46addc71e ("Revert "init/console: Use ttynull as
> a fallback when there is no console").

OK. But I suppose you could find a quick workaround to mitigate this issue.


James


  reply	other threads:[~2021-08-31 14:38 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-31  2:53 Linus Torvalds
2021-08-31  3:17 ` Sergey Senozhatsky
2021-08-31  7:34   ` John Ogness
2021-08-31  8:14   ` Petr Mladek
2021-08-31  8:31     ` James Wang
2021-08-31  8:47     ` Sergey Senozhatsky
2021-08-31 13:45       ` James Wang
2021-08-31 14:33         ` Petr Mladek
2021-08-31 14:38           ` James Wang [this message]
2021-08-31 14:52             ` Petr Mladek
2021-09-01  1:52               ` James Wang
2021-09-01 11:48                 ` Petr Mladek
2021-09-01 13:53                   ` James Wang

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