linux-kernel - Re: [PATCH 10/13] block, cfq: unlink cfq_io

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]

Message-ID: <20111026195506.GD24261@google.com>
Date:	Wed, 26 Oct 2011 12:55:06 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	axboe@...nel.dk, ctalbott@...gle.com, rni@...gle.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/13] block, cfq: unlink cfq_io_context's immediately

Hello,

On Wed, Oct 26, 2011 at 03:48:57PM -0400, Vivek Goyal wrote:
> > +		ioc_release_depth_inc(cic->q);
> > +		cic->exit(cic);
> > +		cic->release(cic);
> > +		ioc_release_depth_dec(cic->q);
> 
> cic->release(cic) can free the cic? Are we accessing cic after freeing it
> up in ioc_release_depth_dec(cic->q);

As cic is RCU freed and we're running w/ irq disabled, this shouldn't
blow up, but yeah, I'll update it to use local variable instead.

Thanks.

-- 
tejun
--
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/