linux-kernel - Re: [next-20210827][ppc][multipathd] INFO: task hung in dm_table_add

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Message-ID: <20210901133618.GA16687@lst.de>
Date:   Wed, 1 Sep 2021 15:36:18 +0200
From:   Christoph Hellwig <hch@....de>
To:     Abdul Haleem <abdhalee@...ux.vnet.ibm.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-scsi <linux-scsi@...r.kernel.org>,
        linux-next <linux-next@...r.kernel.org>, hch@....de,
        jack@...e.cz, axboe@...nel.dk,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        dm-devel@...hat.com, sachinp <sachinp@...ux.vnet.ibm.com>,
        Brian King <brking@...ux.vnet.ibm.com>, dougmill@...ibm.com
Subject: Re: [next-20210827][ppc][multipathd] INFO: task hung in
 dm_table_add_target

On Wed, Sep 01, 2021 at 04:47:26PM +0530, Abdul Haleem wrote:
> Greeting's
>
> multiple task hung while adding the vfc disk back to the multipath on my 
> powerpc box running linux-next kernel

Can you retry to reproduce this with lockdep enabled to see if there
is anything interesting holding this lock?