From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: David Howells <dhowells@redhat.com>
Cc: torvalds@osdl.org, jmorris@namei.sys, akpm@linux-foundation.org,
serue@us.ibm.com, mingo@elte.hu, linux-kernel@vger.kernel.org,
vegard.nossum@gmail.com, containers@lists.osdl.org,
snakebyte@gmx.de
Subject: Re: [PATCH] User namespaces: Only put the userns when we unhash the uid
Date: Sat, 14 Feb 2009 00:48:42 +0900 [thread overview]
Message-ID: <2f11576a0902130748h313864b6sa50ad038ab011fc0@mail.gmail.com> (raw)
In-Reply-To: <20090213140421.5698.86876.stgit@warthog.procyon.org.uk>
> From: Serge E. Hallyn <serue@us.ibm.com>
>
> uids in namespaces other than init don't get a sysfs entry.
>
> For those in the init namespace, while we're waiting to remove
> the sysfs entry for the uid the uid is still hashed, and
> alloc_uid() may re-grab that uid without getting a new
> reference to the user_ns, which we've already put in free_user
> before scheduling remove_user_sysfs_dir().
>
> Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
> Acked-by: David Howells <dhowells@redhat.com>
> Tested-by: Ingo Molnar <mingo@elte.hu>
ok, thanks good patch.
Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
prev parent reply other threads:[~2009-02-13 15:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-13 14:04 David Howells
2009-02-13 14:21 ` Ingo Molnar
2009-02-13 15:48 ` KOSAKI Motohiro [this message]
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=2f11576a0902130748h313864b6sa50ad038ab011fc0@mail.gmail.com \
--to=kosaki.motohiro@jp.fujitsu.com \
--cc=akpm@linux-foundation.org \
--cc=containers@lists.osdl.org \
--cc=dhowells@redhat.com \
--cc=jmorris@namei.sys \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=serue@us.ibm.com \
--cc=snakebyte@gmx.de \
--cc=torvalds@osdl.org \
--cc=vegard.nossum@gmail.com \
/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®