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:	Fri, 6 Jun 2014 11:53:29 -0700
From:	Hán Shěn (沈涵) <shenhan@...gle.com>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: "." in vmlinux.lds.S

Yeah, the symbol "__end_rodata_hpage_align" is defined as absolute in
older binutils, the newer binutils making it relative seems
meaningless in this context.

On Fri, Jun 6, 2014 at 11:40 AM, Andy Lutomirski <luto@...capital.net> wrote:
> On 06/06/2014 10:08 AM, Hán Shěn (沈涵) wrote:
>> A gentle ping?
>>
>> On Tue, Jun 3, 2014 at 2:46 PM, Hán Shěn (沈涵) <shenhan@...gle.com> wrote:
>>> Hi we are trying to boot up a x86_64 chrome book using binutils 2.24 and
>>> kernel 3.8, but failed.
>>>
>>> After some triage work, we found that a 2-year-old binutil CL changed the
>>> interpretation of "." in linker script (short story: absolute -> relative,
>>> long story: https://sourceware.org/ml/binutils/2012-06/msg00155.html).
>>>
>>> After some further work, we are able to boot the kernel with a kernel patch
>>> pasted at EOM. I am curious, why the upstream kernel is never hit by this
>>> behavior? We enabled "CONFIG_DEBUG_RODATA", so we were hit, is this some
>>> macro not usually turned on?
>
> What does a section-relative symbol do?
>
> --Andy



-- 
Han Shen |  Software Engineer |  shenhan@...gle.com |  +1-650-440-3330
--
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ