linux-kernel - Re: [PATCH v3] scsi: core: Fix hang of freezing queue between blocking and running device

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Message-ID: <c3215379-6e77-0d94-992c-8049d9bf3f46@acm.org>
Date:   Mon, 23 Aug 2021 20:41:08 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Li Jinlin <lijinlin3@...wei.com>, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     john.garry@...wei.com, qiulaibin@...wei.com, linfeilong@...wei.com,
        wubo40@...wei.com
Subject: Re: [PATCH v3] scsi: core: Fix hang of freezing queue between
 blocking and running device

On 8/23/21 7:59 PM, Li Jinlin wrote:
> We found a hang issue, the test steps are as follows:
>   1. blocking device via scsi_device_set_state()
>   2. dd if=/dev/sda of=/mnt/t.log bs=1M count=10
>   3. echo none > /sys/block/sda/queue/scheduler
>   4. echo "running" >/sys/block/sda/device/state

Reviewed-by: Bart Van Assche <bvanassche@....org>