Re: 6.6 kernel block: blk_mq_freeze_queue_wait in suspend path but userspace task held the queue->q_usage_counter in 'TASK_FROZEN' state

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To: Kassey Li <quic_yingangl@xxxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, "linux-scsi@xxxxxxxxxxxxxxx" <linux-scsi@xxxxxxxxxxxxxxx>
Subject: Re: 6.6 kernel block: blk_mq_freeze_queue_wait in suspend path but userspace task held the queue->q_usage_counter in 'TASK_FROZEN' state
From: Bart Van Assche <bvanassche@xxxxxxx>
Date: Fri, 21 Jun 2024 10:31:45 -0700
In-reply-to: <c6fa7134-c99e-464d-9d5d-a9480aaf59fc@quicinc.com>
References: <6fb677a4-b655-4395-9dd1-450217fec69d@quicinc.com> <4c98300f-bc0d-4267-acd4-6365de65713e@acm.org> <c6fa7134-c99e-464d-9d5d-a9480aaf59fc@quicinc.com>
User-agent: Mozilla Thunderbird

On 6/20/24 6:39 PM, Kassey Li wrote:

do you have some suggest on break this ?


Since I do not have access to a test setup on which I can reproduce this
issue, please work with your colleagues on root-causing this issue. Can
Guo should be able to help you or find a person who can help you.

Thanks,

Bart.

References:
- 6.6 kernel block: blk_mq_freeze_queue_wait in suspend path but userspace task held the queue->q_usage_counter in 'TASK_FROZEN' state
  - From: Kassey Li
- Re: 6.6 kernel block: blk_mq_freeze_queue_wait in suspend path but userspace task held the queue->q_usage_counter in 'TASK_FROZEN' state
  - From: Bart Van Assche
- Re: 6.6 kernel block: blk_mq_freeze_queue_wait in suspend path but userspace task held the queue->q_usage_counter in 'TASK_FROZEN' state
  - From: Kassey Li

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