From: Martin Devera <devik@cdi.cz>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: stat of /proc fails after CPU hot-unplug with EOVERFLOW in 2.6.18
Date: Wed, 27 Sep 2006 16:44:08 +0200 [thread overview]
Message-ID: <451A8E38.60300@cdi.cz> (raw)
In-Reply-To: <20060927011348.36818f83.akpm@osdl.org>
Andrew Morton wrote:
> On Wed, 27 Sep 2006 09:55:47 +0200
> Martin Devera <devik@cdi.cz> wrote:
>
>> Hello,
>>
>> I have 2way Opteron machine. I've done this:
>> echo 0 > /sys/devices/system/cpu/cpu1/online
>>
>> and then strace stat /proc:
>>
>> [snip]
>> personality(PER_LINUX) = 4194304
>> getpid() = 14926
>> brk(0) = 0x804b000
>> brk(0x804b1a0) = 0x804b1a0
>> brk(0x804c000) = 0x804c000
>> stat("/proc", 0xbf8e7490) = -1 EOVERFLOW
>>
>> When I do echo 1 > ... to start cpu again then the stat starts
>> to work again ... Weird.
>>
>
> boggle.
>
> Can you add this patch, see where it's going bad?
Ehh .. I finally learned how to code jprobe (I can't reboot the machine now),
tested, installed and ... guess what ? The overflow bug is gone :-(
It simply works now.
I will reboot it next week and try again.
thanks for a help and sorry for your wasted time,
Martin
next prev parent reply other threads:[~2006-09-27 14:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-27 7:55 stat of /proc fails after CPU hot-unplug with EOVERFLOW in 2.6.18 Martin Devera
2006-09-27 8:13 ` Andrew Morton
2006-09-27 14:44 ` Martin Devera [this message]
2006-10-03 8:40 ` Martin Devera
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=451A8E38.60300@cdi.cz \
--to=devik@cdi.cz \
--cc=akpm@osdl.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.