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SubjectRe: [PATCH] blk-mq: fix possible NULL pointer access in classic polling
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On 12/16/22 8:06 AM, huteng19901016@gmail.com wrote:
> From: "huteng.ht" <huteng.ht@bytedance.com>
>
> Since poll method in blk_mq_ops may not be implemented by driver,
> add a judgement to avoid NULL pointer access.

So the queue has QUEUE_FLAG_POLL set, but no -mq_ops->poll() set?
That seems like the real bug.

Where did you see this oops?

--
Jens Axboe


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