From: Tejun Heo <tj@kernel.org>
To: Sasha Levin <sasha.levin@oracle.com>
Cc: axboe@kernel.dk, Li Zefan <lizefan@huawei.com>,
LKML <linux-kernel@vger.kernel.org>,
Dave Jones <davej@redhat.com>,
cgroups@vger.kernel.org
Subject: Re: blkcg: circular dependency between blkcg_pol_mutex and s_active
Date: Sun, 4 May 2014 15:26:30 -0400 [thread overview]
Message-ID: <20140504192630.GE26279@htj.dyndns.org> (raw)
In-Reply-To: <5363C04B.4010400@oracle.com>
Hello,
On Fri, May 02, 2014 at 11:56:59AM -0400, Sasha Levin wrote:
> While fuzzing with trinity inside a KVM tools guest running the latest -next
> kernel I've stumbled on the following:
This is a highly unlikely deadlock which got introduced by recent
changes in cgroup core. I'm working to further simplify locking in
cgroup core. Will prep a quick fix for this issue soon.
Thanks.
--
tejun
next prev parent reply other threads:[~2014-05-04 19:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 15:56 Sasha Levin
2014-05-04 19:26 ` Tejun Heo [this message]
2014-05-05 16:37 ` [PATCH cgroup/for-3.15-fixes] blkcg: use trylock on blkcg_pol_mutex in blkcg_reset_stats() Tejun Heo
2014-05-05 16:38 ` Tejun Heo
2014-05-05 17:47 ` Sasha Levin
2014-05-05 17:48 ` Tejun Heo
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=20140504192630.GE26279@htj.dyndns.org \
--to=tj@kernel.org \
--cc=axboe@kernel.dk \
--cc=cgroups@vger.kernel.org \
--cc=davej@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lizefan@huawei.com \
--cc=sasha.levin@oracle.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®