linux-kernel - Re: [PATCHv1 5/8] cgroup: introduce cgroup namespaces

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]

Date:	Sat, 25 Oct 2014 05:16:08 +0200
From:	"Serge E. Hallyn" <serge@...lyn.com>
To:	Aditya Kali <adityakali@...gle.com>
Cc:	"Serge E. Hallyn" <serge@...lyn.com>, Tejun Heo <tj@...nel.org>,
	Li Zefan <lizefan@...wei.com>,
	Serge Hallyn <serge.hallyn@...ntu.com>,
	Andy Lutomirski <luto@...capital.net>, cgroups@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux API <linux-api@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Containers <containers@...ts.linux-foundation.org>
Subject: Re: [PATCHv1 5/8] cgroup: introduce cgroup namespaces

Quoting Aditya Kali (adityakali@...gle.com):
> >> +void free_cgroup_ns(struct cgroup_namespace *ns)
> >> +{
> >> +     cgroup_put(ns->root_cgrp);
> >> +     put_user_ns(ns->user_ns);
> >
> > This is a problem on error patch in copy_cgroup_ns.  The
> > alloc_cgroup_ns() doesn't initialize these values, so if
> > you should fail in proc_alloc_inum() you'll show up here
> > with fandom values in ns->*.
> >
> 
> I don't see the codepath that leads to calling free_cgroup_ns() with
> uninitialized members. We don't call free_cgroup_ns() on the error
> path in copy_cgroup_ns().

Hm, yeah, I'm not seeing it now, sorry.
--
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/