Re: [PATCH] blk-mq: fix hctx/ctx kobject use-after-free

[Jens Axboe]

On 01/19/2015 08:00 PM, Ming Lei wrote:
> The kobject memory shouldn't have been freed before the kobject
> is released because driver core can access it freely before its
> release.
>
> This patch frees hctx in its release callback. For ctx, they
> share one single per-cpu variable which is associated with
> the request queue, so free ctx in q->mq_kobj's release handler.
>
> Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
> (fix ctx kobjects)
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>

Thanks Ming, applied.

--
Jens Axboe

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