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From: Sergey Senozhatsky <>
To: Linus Torvalds <>
Cc: Petr Mladek <>,
	Sergey Senozhatsky <>,
	Steven Rostedt <>,
	John Ogness <>,
	Linux Kernel Mailing List <>
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: <> (raw)
In-Reply-To: <>

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.


> >

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].


  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 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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