From: Tao Ma <tao.ma@oracle.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: /proc/kcore has a unreasonable size(281474974617600) in x86_64 2.6.30-rc8.
Date: Fri, 05 Jun 2009 14:59:46 +0800 [thread overview]
Message-ID: <4A28C262.5020605@oracle.com> (raw)
In-Reply-To: <20090604223805.2962e826.akpm@linux-foundation.org>
Andrew Morton wrote:
> On Fri, 05 Jun 2009 12:03:52 +0800 Tao Ma <tao.ma@oracle.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@test8 ~]# ll /proc/kcore
>> -r-------- 1 root root 281474974617600 Jun 5 11:15 /proc/kcore
>>
>> [root@ocfs2-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?
with 2.6.29, ls shows the same output.
[root@test8 ~]# ll /proc/kcore
-r-------- 1 root root 281474974617600 Jun 5 14:35 /proc/kcore
But the kexec works.
I just checked .28, the same as .29.
Regards,
Tao
next prev parent reply other threads:[~2009-06-05 7:00 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-05 4:03 /proc/kcore has a unreasonable size(281474974617600) in x86_64 2.6.30-rc8 Tao Ma
2009-06-05 5:38 ` Andrew Morton
2009-06-05 6:59 ` Tao Ma [this message]
2009-06-05 7:56 ` Amerigo Wang
2009-06-05 8:57 ` Tao Ma
2009-06-05 9:09 ` Américo Wang
2009-06-05 9:14 ` Andrew Morton
2009-06-05 9:30 ` Tao Ma
2009-06-05 9:51 ` Amerigo Wang
2009-06-05 14:26 ` Tao Ma
2009-06-05 17:50 ` Yinghai Lu
2009-06-06 14:37 ` Tao Ma
2009-06-06 22:21 ` Yinghai Lu
2009-06-08 1:52 ` Amerigo Wang
2009-06-08 6:02 ` Tao Ma
2009-06-08 6:41 ` Américo Wang
2009-06-08 8:00 ` Tao Ma
2009-06-09 0:43 ` Américo Wang
2009-06-09 4:10 ` Eric W. Biederman
2009-06-11 5:09 ` Amerigo Wang
2009-06-11 14:12 ` Eric W. Biederman
2009-06-12 7:54 ` Tao Ma
2009-06-13 4:09 ` [Patch BUGFIX] kcore: fix its wrong size on x86_64 Amerigo Wang
2009-06-13 4:20 ` Eric W. Biederman
2009-06-15 2:14 ` Amerigo Wang
2009-06-15 5:59 ` Tao Ma
2009-06-15 7:00 ` Amerigo Wang
2009-06-15 8:34 ` Tao Ma
2009-06-15 9:00 ` Amerigo Wang
2009-06-15 10:10 ` Eric W. Biederman
2009-06-15 22:10 ` TaoMa
2009-06-15 19:48 ` Eric W. Biederman
2009-06-15 17:01 ` Tao Ma
2009-06-15 10:08 ` Eric W. Biederman
2009-06-16 15:29 ` Américo Wang
2009-06-16 19:27 ` Eric W. Biederman
2009-06-18 3:00 ` Amerigo Wang
2009-06-18 3:37 ` Eric W. Biederman
2009-06-18 4:40 ` Amerigo Wang
2009-06-18 5:41 ` Eric W. Biederman
2009-06-22 8:54 ` [Patch] kcore: remove its pointless size Amerigo Wang
2009-06-30 10:08 ` [RESEND Patch] " Amerigo Wang
2009-07-01 21:47 ` Andrew Morton
2009-07-01 23:25 ` Eric W. Biederman
2009-07-02 0:12 ` Andrew Morton
2009-07-02 0:41 ` KAMEZAWA Hiroyuki
2009-07-17 22:29 ` Andrew Morton
2009-07-21 2:09 ` KAMEZAWA Hiroyuki
2009-07-21 8:46 ` KAMEZAWA Hiroyuki
2009-07-21 9:36 ` [RFC][PATCH 0/3] kcore: clean up and update ram information properly KAMEZAWA Hiroyuki
2009-07-21 9:38 ` [RFC][PATCH 1/3] kcore: use usual list ops in kclist KAMEZAWA Hiroyuki
2009-07-21 9:39 ` [RFC][PATCH 2/3] kcore: add kclist type information KAMEZAWA Hiroyuki
2009-07-21 9:41 ` [RFC][PATCH 3/3] kcore: rebuild RAM information based on io resource information KAMEZAWA Hiroyuki
2009-07-21 11:29 ` [RFC][PATCH 0/3] kcore: clean up and update ram information properly Andi Kleen
2009-07-22 0:27 ` KAMEZAWA Hiroyuki
2009-07-02 9:28 ` [RESEND Patch] kcore: remove its pointless size Amerigo Wang
2009-06-05 5:49 ` /proc/kcore has a unreasonable size(281474974617600) in x86_64 2.6.30-rc8 Amerigo Wang
2009-06-05 6:07 ` Tao Ma
2009-06-05 6:43 ` Amerigo Wang
2009-06-05 6:56 ` Tao Ma
2009-06-05 8:00 ` Amerigo Wang
2009-06-05 9:01 ` Tao Ma
2009-06-05 9:20 ` Amerigo Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4A28C262.5020605@oracle.com \
--to=tao.ma@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox