subject:"\[PATCH v2 1\/1\] nvme\-pci\: avoid race between nvme_reap_pending_cqes\(\) and nvme_poll\(\)"

Re: [PATCH v2 1/1] nvme-pci: avoid race between nvme_reap_pending_cqes() and nvme_poll()

2020-05-27 Thread Christoph Hellwig

Thanks, applied to nvme-5.7.

[PATCH v2 1/1] nvme-pci: avoid race between nvme_reap_pending_cqes() and nvme_poll()

2020-05-27 Thread Dongli Zhang

There may be a race between nvme_reap_pending_cqes() and nvme_poll(), e.g., when doing live reset while polling the nvme device. CPU XCPU Y nvme_poll() nvme_dev_disable() -> nvme_stop_queues() -> nvme_suspend_io_queues() -> nvme_suspend_