linux-kernel - Re: kernel segv with 2.6.31-rc6 ?

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:	Tue, 25 Aug 2009 17:49:40 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	"Helge Deller" <deller@....de>
Cc:	roland@...hat.com, James.Bottomley@...senpartnership.com,
	rusty@...tcorp.com.au, linux-parisc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	John David Anglin <dave.anglin@....ca>
Subject: Re: kernel segv with 2.6.31-rc6 ?

On Thursday 20 August 2009 08:25:37 Helge Deller wrote:
> The reason seems to be, that something in the newer gcc compilers changed
> to generate multiple sections all named ".text" for the PCREL17
> relocations. Older compilers named those sections ".text.1", ".text.2",
> ".text.3" and so forth.

we saw this on Blackfin some time ago and it was tracked back to attribute mismatches in
assembly files:
http://blackfin.uclinux.org/gf/tracker/3638
http://blackfin.uclinux.org/gf/project/linux-kernel/scmsvn/?action=browse&path=/trunk/arch/blackfin/mach-
common/entry.S&r1=3898&r2=3897&pathrev=3898

when `ld -r` ran, the sections named .text couldnt be combined due to different attributes so ld just added the .# 
suffix for us

if you have scanelf installed (from pax-utils), that might help track back the source object ... `scanelf -qrk .text.1 ./`
-mike

Download attachment "signature.asc " of type "application/pgp-signature" (837 bytes)