On Fri, Apr 12, 2019 at 01:06:07PM +0200, Hannes Reinecke wrote:
> On 4/12/19 5:30 AM, Ming Lei wrote:
> > In normal queue cleanup path, hctx is released after request queue
> > is freed, see blk_mq_release().
> >
> > However, in __blk_mq_update_nr_hw_queues(), hctx may be freed because
> > of hw
On 4/12/19 5:30 AM, Ming Lei wrote:
In normal queue cleanup path, hctx is released after request queue
is freed, see blk_mq_release().
However, in __blk_mq_update_nr_hw_queues(), hctx may be freed because
of hw queues shrinking. This way is easy to cause use-after-free,
because: one implicit rul
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