linux-kernel - Re: [PATCH] init/main.c: check for null pointer before calling initcall

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Date:   Fri, 27 Oct 2017 20:22:32 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     David Daney <ddaney@...iumnetworks.com>
cc:     Abderrahmane Benbachir <abderrahmane.benbachir@...ymtl.ca>,
        linux-kernel@...r.kernel.org, mingo@...nel.org,
        akpm@...ux-foundation.org, keescook@...omium.org, jeyu@...hat.com,
        rostedt@...dmis.org, mhocko@...e.com, viresh.kumar@...aro.org,
        thomas.lendacky@....com
Subject: Re: [PATCH] init/main.c: check for null pointer before calling
 initcall

On Fri, 27 Oct 2017, David Daney wrote:

> On 10/27/2017 09:47 AM, Abderrahmane Benbachir wrote:
> > Simple check to prevent kernel panic when initcall does not exit
> 
> Interesting, under what circumstances do you observe the panic?
> 
> It would be best to include this information in the patch changelog.

device_initcall(NULL);

might do that, but then it rightfully crashes on boot.