linux-kernel - Re: 2.6.24-rc6-mm1: some section mismatches on sparc64

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20071229084846.GA27360@does.not.exist>
Date:	Sat, 29 Dec 2007 10:48:46 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	David Miller <davem@...emloft.net>
Cc:	errandir_news@....eclipse.co.uk, m.kozlowski@...land.pl,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	sparclinux@...r.kernel.org
Subject: Re: 2.6.24-rc6-mm1: some section mismatches on sparc64

On Sat, Dec 29, 2007 at 12:14:11AM -0800, David Miller wrote:
> From: Adrian Bunk <bunk@...nel.org>
> Date: Sat, 29 Dec 2007 01:22:56 +0200
> 
> > At least the sunserial_console_match() one is an obvious Oops 
> > (EXPORT_SYMBOL of an __init function).
> > 
> > The comment in the description of
> > commit 58d784a5c754cd66ecd4791222162504d3c16c74 the warning was bogus    
> > is bullshit.
> > 
> > I'm not sure whether this might count as a 2.6.24-rc regression or 
> > whether 2.6.23 is simply differently but similarly broken (does anyone 
> > actually use the Sun console drivers modular?).
> 
> You can't do that, the FOO_CONSOLE config options depend upon
> FOO=y.

Looking closer, the problem aren't the FOO_CONSOLE options themselves, 
the problem is that with FOO_CONSOLE=n sunserial_console_match() still 
gets called.

> That's why I'm not worried about this issue and it's not critical at
> all.

If a module calls sunserial_console_match() that's an Oops.

I removed the EXPORT_SYMBOL(sunserial_console_match), and this is the 
result:
  MODPOST 136 modules
ERROR: "sunserial_console_match" [drivers/serial/sunzilog.ko] undefined!
ERROR: "sunserial_console_match" [drivers/serial/sunsu.ko] undefined!
ERROR: "sunserial_console_match" [drivers/serial/sunsab.ko] undefined!

-ENOHARDWARE, but looking at the code you could call me _very_ surprised 
if you manage to load a modular sunsab from 2.6.24-rc6 on a machine with 
the hardware without getting an Oops.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/