From: Manfred Spraul <manfred@colorfullife.com>
To: Zwane Mwaikambo <zwane@linuxpower.ca>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@digeo.com>
Subject: Re: task_struct slab cache use after free in 2.5.66
Date: Fri, 28 Mar 2003 07:25:07 +0100 [thread overview]
Message-ID: <3E83EAC3.3080107@colorfullife.com> (raw)
Zwane wrote:
>On Thu, 27 Mar 2003, Andrew Morton wrote:
>
>> That's the second report of this. Someone did a put_task_struct against a
>> freed task_struct. I'll cook up a debug patch to trap it. Something like
>> this:
>
>Well there is also the detach_pid bug which suddenly vanished... I'm not
>aware of anyone sending a patch for that (but i can't be certain i havent
>been keeping up with lkml lately). I posted some debug information for
>that one about a week ago:
>
>Pine.LNX.4.50.0303221152460.18911-100000@montezuma.mastecende.com
>
>Manfred?
I didn't send a patch. One thing I noticed from reading zwane's bug report is that the reference count of the task structure was off by at least 3:
__detach_pid(p, PIDTYPE_PGID)
failed because the task structure was already filled with slab poison.
--
Manfred
next reply other threads:[~2003-03-28 6:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-28 6:25 Manfred Spraul [this message]
2003-03-28 6:25 ` Zwane Mwaikambo
-- strict thread matches above, loose matches on Subject: below --
2003-03-28 3:19 Zwane Mwaikambo
2003-03-28 3:28 ` Zwane Mwaikambo
2003-03-28 4:23 ` Andrew Morton
2003-03-28 4:25 ` Zwane Mwaikambo
2003-03-28 6:22 ` Zwane Mwaikambo
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=3E83EAC3.3080107@colorfullife.com \
--to=manfred@colorfullife.com \
--cc=akpm@digeo.com \
--cc=linux-kernel@vger.kernel.org \
--cc=zwane@linuxpower.ca \
/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
all inboxes | Powered by JetHome®