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Date: Wed, 3 Dec 2014 15:56:58 -0500
From: Chris Mason <clm@fb.com>
Subject: Re: frequent lockups in 3.18rc4
To: Dave Jones <davej@redhat.com>
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On Wed, Dec 3, 2014 at 3:11 PM, Dave Jones <davej@redhat.com> wrote:
> On Wed, Dec 03, 2014 at 02:59:58PM -0500, Chris Mason wrote:
> 
>  > You've also mentioned a few times where messages stopped hitting 
> the
>  > console?
>  >
>  > commit 5874af2003b1aaaa053128d655710140e3187226
>  > Author: Jan Kara <jack@suse.cz>
>  > Date:   Wed Aug 6 16:09:10 2014 -0700
>  >
>  >     printk: enable interrupts before calling
>  > console_trylock_for_printk()
> 
> Hmm..

Jan Kara has been talking about printk deadlocks for some time.  I 
wouldn't have expected it to get worse since 3.16, but we do have a few 
printk cleanups and fixes in there.

-chris



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