Re: [PATCH v4] blk-mq: Fix race conditions in request timeout handling

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On Tue, 2018-04-10 at 15:59 +0800, jianchao.wang wrote:
> If yes, how does the timeout handler get the freed request when the tag has been freed ?

Hello Jianchao,

Have you noticed that the timeout handler does not check whether or not the request
tag is freed? Additionally, I don't think it would be possible to add such a check
to the timeout code without introducing a new race condition.

Bart.






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