linux-kernel - Re: [Patch BUGFIX] kcore: fix its wrong size on 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: <m1ski1g632.fsf@fess.ebiederm.org>
Date:	Mon, 15 Jun 2009 03:10:57 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Tao Ma <tao.ma@...cle.com>
Cc:	Amerigo Wang <xiyou.wangcong@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Alexey Dobriyan <adobriyan@...il.com>
Subject: Re: [Patch BUGFIX] kcore: fix its wrong size on x86_64

Tao Ma <tao.ma@...cle.com> writes:

> Hi Amerigo,
>
> The wrong number I mean is 131941393240064.
>
> So do you think
> [root@...t3 ~]# ls -l /proc/kcore
> -r-------- 1 root root 131941393240064 Jun 15 13:39 /proc/kcore
>
> is better than
>
> [taoma@...t2 ~]$ ll /proc/kcore
> -r-------- 1 root root 281474974617600 Jun 15 15:20 /proc/kcore
> ?
>
> I don't think so.
>
> Actually the right result should look like
>
> [root@...t8 ~]# ls -l /proc/kcore
> -r-------- 1 root root 5301604352 Jun 15 13:35 /proc/kcore
>
> And with your patch I can't get this number.

Actually that value is the bug.  It has absolutely nothing
to do with the offsets that are valid within /proc/kcore.

Why do you prefer the smaller number?

Eric
--
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/