linux-kernel - Re: [BUG] rockpro64 board hangs in console

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Date:   Wed, 15 Jun 2022 17:49:58 +0100
From:   Alexandru Elisei <alexandru.elisei@....com>
To:     Jan Kara <jack@...e.cz>
Cc:     Petr Mladek <pmladek@...e.com>, sunjunchao2870@...il.com,
        viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, senozhatsky@...omium.org,
        rostedt@...dmis.org, john.ogness@...utronix.de,
        keescook@...omium.org, anton@...msg.org, ccross@...roid.com,
        tony.luck@...el.com, heiko@...ech.de,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, maco@...roid.com, hch@....de,
        gregkh@...uxfoundation.org, jirislaby@...nel.org
Subject: Re: [BUG] rockpro64 board hangs in console_init() after commit
 10e14073107d

Hi,

On Wed, Jun 15, 2022 at 06:39:49PM +0200, Jan Kara wrote:
> Hi Alexandru!
> 
> On Wed 15-06-22 13:50:24, Alexandru Elisei wrote:
> > On Tue, Jun 14, 2022 at 05:00:04PM +0200, Petr Mladek wrote:
> > > > > > I've booted a kernel compiled with CONFIG_PROVE_LOCKING=y, as the offending
> > > > > > commit fiddles with locks, but no splat was produced that would explain the
> > > > > > hang. I've also tried to boot a v5,19-rc2 kernel on my odroid-c4, the board
> > > > > > is booting just fine, so I'm guessing it only affects of subset of arm64
> > > > > > boards.
> > > > > 
> > > > > You might try to switch the order of console_init() and lockdep_init()
> > > > > in start_kernel() in init/main.c
> > > > 
> > > > Did so above.
> > > 
> > > Unfortunately, it did not print anything :-(
> > 
> > With this patch [1] I was able to succefully boot the board. So I guess
> > problem should be fixed.
> > 
> > [1] https://lore.kernel.org/all/20220614124618.2830569-1-suzuki.poulose@arm.com/
> 
> Can you please try booting with the patch I've posted at [2]? After some
> discussion with Linus that would be a preferable fix... Thanks!
> 
> [2] https://lore.kernel.org/all/20220615133845.o2lzfe5s4dzdfvtg@quack3.lan

The patch works for me, thank you!

Do you also need me to reply to the discussion?

Alex

> 
> 								Honza
> 
> -- 
> Jan Kara <jack@...e.com>
> SUSE Labs, CR