From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <senozhatsky@chromium.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 12:17:59 +0900 [thread overview]
Message-ID: <YS2fZ1sknFYKtJFi@google.com> (raw)
In-Reply-To: <CAHk-=wj+G8MXRUk5HRCvUr8gOpbR+zXQ6WNTB0E7n32fTUjKxQ@mail.gmail.com>
On (21/08/30 19:53), Linus Torvalds wrote:
>
> There's a bugzilla for this, but let's just move it to reguilar email,
> unless some of you want to track it that way.
>
> The bugzilla entry says
>
> "When reboot， the capslock key of thinkpad x1 starts blinking"
>
> which sounds like there's an oops that just isn't showing, quite
> possibly because the console has already been shut down.
>
> I didn't test this out, and would sincerely hope that somebody else is
> willing to follow up on it since I'm in the busiest part of the merge
> window.
[..]
> > https://bugzilla.kernel.org/show_bug.cgi?id=214201
I think normally wrong/empty console boot argument should not cause
problems. We have a huge number of devices that use console="", for
instance. But on some hardware this triggers panic(), very early on.
I have the same symptoms on my laptop, and so far haven't been able
to figure out how to track it down, but I need to re-start my investigation.
In the meantime, we had a series [0] but ended up reverting it.
I think we need to revisit it, namely the part that starts with [1].
[0] https://lore.kernel.org/lkml/20201111135450.11214-1-pmladek@suse.com/
[1] https://lore.kernel.org/lkml/X%2FfWGjYI5LapMdGW@jagdpanzerIV.localdomain/
next prev parent reply other threads:[~2021-08-31 3:19 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 [this message]
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
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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