linux-kernel - Re: [PATCH] tty: n_hdlc: fix build on SPARC

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Message-ID: <9ef8c2a5-8510-c509-4c31-b8684b6e1c67@physik.fu-berlin.de>
Date:   Wed, 30 Oct 2019 20:29:40 +0100
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     Kees Cook <keescook@...omium.org>,
        Randy Dunlap <rdunlap@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, sparclinux@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Miller <davem@...emloft.net>,
        kbuild test robot <lkp@...el.com>
Subject: Re: [PATCH] tty: n_hdlc: fix build on SPARC

On 10/30/19 7:34 PM, Kees Cook wrote:
> On Mon, Sep 30, 2019 at 07:15:12PM -0700, Randy Dunlap wrote:
>> From: Randy Dunlap <rdunlap@...radead.org>
>>
>> Fix tty driver build on SPARC by not using __exitdata.
>> It appears that SPARC does not support section .exit.data.
>>
>> Fixes these build errors:
>>
>> `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>> `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>> `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>> `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>>
>> Reported-by: kbuild test robot <lkp@...el.com>
>> Fixes: 063246641d4a ("format-security: move static strings to const")
>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> 
> Wow. That commit is from 2.5 years ago. Is the SPARC port still alive?
Yes, it is. No idea why we didn't run into this. I assume it affects certain
configurations only. On Debian, we are always compiling and running the
latest kernel versions on sparc64.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@...ian.org
`. `'   Freie Universitaet Berlin - glaubitz@...sik.fu-berlin.de
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