linux-kernel - Re: /proc/kcore has a unreasonable size(281474974617600) in x86

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: <20090604223805.2962e826.akpm@linux-foundation.org>
Date:	Thu, 4 Jun 2009 22:38:05 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Tao Ma <tao.ma@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: /proc/kcore has a unreasonable size(281474974617600) in x86_64
 2.6.30-rc8.

On Fri, 05 Jun 2009 12:03:52 +0800 Tao Ma <tao.ma@...cle.com> wrote:

> Hi list,
>        In 2.6.30-rc8, /proc/kcore in x86_64's size is unreasonable large 
> to be 281474974617600.
> While in a x86 box, it is 931131392 which looks sane.
> 
> [root@...t8 ~]# ll /proc/kcore
> -r-------- 1 root root 281474974617600 Jun  5 11:15 /proc/kcore
> 
> [root@...s2-test9 ~]$ ll /proc/kcore
> -r-------- 1 root root 931131392 Jun  5 11:58 /proc/kcore
> 
> I just noticed this when kexec fails in "Can't find kernel text map area 
> from kcore".
> 
> Is there something wrong?
> 

fs/proc/kcore.c hasn't changed since October last year.  Was 2.6.29 OK?
Earlier kernels?

Thanks.
--
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/