linux-kernel - Re: [RFC][PATCHv6 00/12] printk: introduce printing kernel thread

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Message-ID: <20180109221754.GV3668920@devbig577.frc2.facebook.com>
Date:   Tue, 9 Jan 2018 14:17:54 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:     rostedt@...dmis.org, pmladek@...e.com,
        sergey.senozhatsky@...il.com, jack@...e.cz,
        akpm@...ux-foundation.org, peterz@...radead.org, rjw@...ysocki.net,
        pavel@....cz, linux-kernel@...r.kernel.org,
        sergey.senozhatsky.work@...il.com
Subject: Re: [RFC][PATCHv6 00/12] printk: introduce printing kernel thread

On Wed, Jan 10, 2018 at 07:08:30AM +0900, Tetsuo Handa wrote:
> > * Netconsole tries to send out OOM messages and tries memory
> >   allocation which fails which then prints allocation failed messages.
> >   Because this happens while already printing, it just queues the
> >   messages to the buffer.  This repeats.
> 
> What? Does netconsole need to allocate memory when sending? I assume it does not.

A lot of network drivers do, unfortunatley.

Thanks.

-- 
tejun