linux-kernel - Re: kernel BUG at kernel/kallsyms.c:222!

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]

Date:	Mon, 11 Nov 2013 17:57:29 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Axel Lin <axel.lin@...ics.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Russell King <linux@....linux.org.uk>,
	Michal Marek <mmarek@...e.cz>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: kernel BUG at kernel/kallsyms.c:222!

Hi,

On Mon, Nov 11, 2013 at 4:37 PM, Axel Lin <axel.lin@...ics.com> wrote:
> 2013/11/11 Ming Lei <tom.leiming@...il.com>:
>
> Hi Ming,
>
> commit f6537f2f "scripts/kallsyms: filter symbols not in kernel address space",
> uses CONFIG_PAGE_OFFSET as kernel_start_addr.
> However, for !CONFIG_MMU case we have :
>     PAGE_OFFSET != CONFIG_PAGE_OFFSET.

Yes, it is the cause, and strictly speaking, commit f6537f2f is wrong,
but triggered with bogus CONFIG_PAGE_OFFSET if !CONFIG_MMU.

We can fix it either by Rusty's patch or removing the bogus
CONFIG_PAGE_OFFSET for !CONFIG_MMU.


Thanks,
-- 
Ming Lei
--
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/