From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751263AbcLDKVd (ORCPT <rfc822;w@1wt.eu>);
        Sun, 4 Dec 2016 05:21:33 -0500
Received: from mout.web.de ([212.227.15.3]:58751 "EHLO mout.web.de"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1750778AbcLDKVa (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Sun, 4 Dec 2016 05:21:30 -0500
Subject: Re: alpha: Checking for a failed kmalloc() in
 process_reloc_for_got()?
To: Jiri Kosina <jikos@kernel.org>
References: <f5890058-e6e8-00ca-22c4-e1521cb5bf56@users.sourceforge.net>
 <alpine.LNX.2.00.1612040108350.29400@cbobk.fhfr.pm>
Cc: linux-alpha@vger.kernel.org, Josh Poimboeuf <jpoimboe@redhat.com>,
        Matt Turner <mattst88@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Richard Henderson <rth@twiddle.net>,
        Rusty Russell <rusty@rustcorp.com.au>, kernel-janitors@vger.kernel.org,
        linux-kernel@vger.kernel.org
From: SF Markus Elfring <elfring@users.sourceforge.net>
Message-ID: <782323c8-7e33-39e5-ae04-a94cf454a346@users.sourceforge.net>
Date: Sun, 4 Dec 2016 11:20:27 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.5.1
MIME-Version: 1.0
In-Reply-To: <alpine.LNX.2.00.1612040108350.29400@cbobk.fhfr.pm>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
X-Provags-ID: V03:K0:DbZdg1PKmVEkCSM6PPesh3ON9FD8oiZiZxKz/olBOrcRjuOFDrN
 dQmpF3nrTffzcCcBZWMNs6+SZOQAJiwT8QXWwx+HHF7VhZRLelrEAMCK24WZzL2OJmRFfOd
 47cD9ttexMt2b6Xp54lyROBxuFiszBhpBlIw9Ta7r1TG1XBzk/ASZmYIEeiQ6jyHkEWChIZ
 Z3np4uhRqzLn64yQkNN3g==
X-UI-Out-Filterresults: notjunk:1;V01:K0:WDctgYv3xMw=:K+8hIpf35rxqvYo55jgT7r
 rJ36XA46ly7KkneP4M9Jo4y7XfNlk1/hgzDsbGc81ZWnuoANDQdXKzuhNwsnWIJyxAm4CNCu1
 T+9hk0fP2feKxMFb7LWOy7c/HfsdBVujeeys/L8zlz8Ztfl3/eoZUOWpJDfmUXxN0uP+4BIKr
 JUYsbzpVudYkSVU1ouOHLS4NdTG2BQdaMYhRwHX/6o+hyj74F44BYQdRhXHvXHhAij5sYreg8
 sXt2tGgk8qedq/Pza2aiNyrJEbK0ok1xTgtW8bL42j1VfpOPaN3DSsT/d1j13XMBe2+tczydP
 LtS4ZzLKXzwMf9KwvFNRByEqnyReQW2Ia613/QR2LQxPe08FHVS3JGC/bZhXVloMzzR2Mx2AA
 uLu7hjv6RFE8T1S24RKES3XOJIdMfQ24uaqtFmMNxejcekXn2SYC4Qx5hiH7Emf5YN4pW8Mjg
 LNR4wq14X2YSEd5VeAtrA+2aKmJPr3ERn7e/z7BD4A69g1row9qwSAixkoMqL2c73ypL7Y/88
 LmdjLfYw643PpW/Lgf1cr4aYZIvEiG8tQ0A5OlSkHAQQbxl7DbQF19F4VuZEIoEa3xyS8i40M
 KLSyGeLU6ehNS3Pe/3uhJiPkbNuSW0llsEvlJMK4KfhVDt2YmjsWjJqxO6ajKyo34z32fMiik
 0xtICsAFmfI4tCRbfohEQMeXaCzKtFE27uSMAjDecmyP3LT4xzDtIdkWsD6RLdhNXi9rCpHyF
 rKHsapwLh3jTdwknUpG/TGU49afLosb65v9yZAMe129z60s3d6c4bpDEFfntX2f4IfqWqGC1I
 oqXmEQ3
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/arch/alpha/kernel/module.c?id=e05f574a0bb1f4502a4b2264fdb0ef6419cf3772#n40
>>
>> Would it be useful to check the return value from a call of the
>> function “kmalloc” also there?
> 
> *drumroll* it'd actually be a proper bugfix.

Which kind of exception handling can be added here when the function
“process_reloc_for_got” has got the return type “void” so far?

Will it be needed to handle such a software failure at more source code places
by a special error code?

Regards,
Markus