Re: [PATH v2] NVMe: init nvme queue before enabling irq

[Sagi Grimberg]

> From: Wenbo Wang <wenbo.wang@xxxxxxxxxxxx>
>
> During reset process, the nvme_dev->bar (ioremapped) may change,
> so nvmeq->q_db shall be also updated by nvme_init_queue().
>
> Currently nvmeq irq is enabled before queue init, so a spurious
> interrupt triggered nvme_process_cq may access nvmeq->q_db just
> before it is updated, this could cause kernel panic.
>
> Signed-off-by: Wenbo Wang <wenbo.wang@xxxxxxxxxxxx>
> Reviewed-by: Wenwei Tao <wenwei.tao@xxxxxxxxxxxx>

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