linux-kernel - Re: [PATCH v1] blk-mq: free hctx->ctxs in queue's release handler

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Message-ID: <55775B5D.9010507@kernel.dk>
Date:	Tue, 09 Jun 2015 15:32:13 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	Ming Lei <tom.leiming@...il.com>
CC:	Christoph Hellwig <hch@...radead.org>, NeilBrown <neilb@...e.de>,
	Stefan Seyfried <stefan.seyfried@...glemail.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] blk-mq: free hctx->ctxs in queue's release handler

On 06/09/2015 03:28 AM, Ming Lei wrote:
> Hi Jens,
>
> Could you consider this patch for v4.1?
>
>       http://marc.info/?l=linux-kernel&m=143342792910832&w=2
>
> The issue is one obvious use-after-free and can be reproduced easily
> via 'sudo modprobe loop;sleep 1;sudo rmmod loop' on linus tree:
>
>        http://kernel.ubuntu.com/~ming/block/bug/4.1-rc7-blk-mq-oops.txt

I'll pull it in, thanks.

-- 
Jens Axboe

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