linux-kernel - Re: [PATCH v4] vt: fix a missing-check bug in con

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Message-ID: <20190612133838.GA7748@kroah.com>
Date:   Wed, 12 Jun 2019 15:38:38 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Gen Zhang <blackgod016574@...il.com>
Cc:     nico@...xnic.net, kilobyte@...band.pl, textshell@...uujin.de,
        mpatocka@...hat.com, daniel.vetter@...ll.ch,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] vt: fix a missing-check bug in con_init()

On Wed, Jun 12, 2019 at 09:15:06PM +0800, Gen Zhang wrote:
> In function con_init(), the pointer variable vc_cons[currcons].d, vc and 
> vc->vc_screenbuf is allocated by kzalloc(). However, kzalloc() returns 
> NULL when fails. Therefore, we should check the return value and handle 
> the error.
> 
> Signed-off-by: Gen Zhang <blackgod016574@...il.com>
> ---

What changed from v1, v2, and v3?

That always goes below the --- line.

v5 please.

thanks,

greg k-h