linux-kernel - Re: [PATCH 1/2] powerpc/platforms/cell: Delete an error message for a failed memory allocation in three functions

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Date:   Thu, 5 Oct 2017 22:06:11 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Michal Suchánek <msuchanek@...e.de>
cc:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        linuxppc-dev@...ts.ozlabs.org, Arnd Bergmann <arnd@...db.de>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Jeremy Kerr <jk@...abs.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] powerpc/platforms/cell: Delete an error message for
 a failed memory allocation in three functions



On Thu, 5 Oct 2017, Michal Suchánek wrote:

> Hello,
>
> On Thu, 5 Oct 2017 21:36:26 +0200
> SF Markus Elfring <elfring@...rs.sourceforge.net> wrote:
>
> > From: Markus Elfring <elfring@...rs.sourceforge.net>
> > Date: Thu, 5 Oct 2017 21:04:30 +0200
> >
> > Omit extra messages for a memory allocation failure in these
> > functions.
>
> this is bogus. All these functions return -1 on any error. Until they
> reflect the error in their return value (and it is properly propagated
> to the user) there is no way to tell WTF failed without the message.

A backtrace will be generated.

julia

>
> >
> > This issue was detected by using the Coccinelle software.
> >
>
> ... which provides only a hint which should be evaluated by the user.
>
> Thanks
>
> Michal
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