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
next prev parent 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 kernel hang during reboot when cmdline include a non-exist console device 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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