linux-kernel - Re: INFO: rcu detected stall in blk_mq_requeue

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Date:   Sun, 30 Oct 2022 04:34:21 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Wei Chen <harperchen1110@...il.com>
Cc:     axboe@...nel.dk, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: INFO: rcu detected stall in blk_mq_requeue_work

On Sun, Oct 30, 2022 at 06:34:35PM +0800, Wei Chen wrote:
> HEAD commit: 64570fbc14f8 Linux 5.15-rc5
> git tree: upstream
> compiler: gcc 8.0.1
> console output:
> https://drive.google.com/file/d/1KgH89-sBhQbB2t-kx_ChpMM1F-7leKuo/view?usp=share_link
> kernel config: https://drive.google.com/file/d/1uDOeEYgJDcLiSOrx9W8v2bqZ6uOA_55t/view?usp=share_link
> 
> Unfortunately, I don't have any reproducer for this crash yet.

Can you please limit your report to linux lists for issues that are:

 a) reproducable
 b) actually happen on a recent upstream kernel.