linux-kernel - Re: [PATCH v2] arch: define weak abort

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Message-ID: <20171221232036.GA4643@sudip-laptop>
Date:   Thu, 21 Dec 2017 23:20:36 +0000
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Vineet Gupta <Vineet.Gupta1@...opsys.com>,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        arcml <linux-snps-arc@...ts.infradead.org>
Subject: Re: [PATCH v2] arch: define weak abort

On Tue, Dec 19, 2017 at 01:55:59PM -0800, Andrew Morton wrote:
> On Tue, 19 Dec 2017 13:39:22 -0800 Vineet Gupta <Vineet.Gupta1@...opsys.com> wrote:
> 

<snip>

> > Hmm, I realize there's a small gotcha with this, when testing with a different 
> > patch from Arnd. This needs an EXPORT_SYMBOL() as well !
> 
> Yup.  This?

Yes, just faced this when I was testing with the reverted patch on m32r.

> 
> From: Andrew Morton <akpm@...ux-foundation.org>
> Subject: kernel/exit.c: export abort() to modules
> 
> gcc -fisolate-erroneous-paths-dereference can generate calls to abort()
> from modular code too.
> 
> Reported-by: Vineet Gupta <Vineet.Gupta1@...opsys.com>
> Cc: Sudip Mukherjee <sudipm.mukherjee@...il.com>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: "Alexey Brodkin" <Alexey.Brodkin@...opsys.com>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> ---

Acked-by: Sudip Mukherjee <sudipm.mukherjee@...il.com>

--
Regards
Sudip