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Date:   Tue, 23 Jul 2019 09:19:18 -0700
From:   Guenter Roeck <linux@roeck-us.net>
To:     James Bottomley <James.Bottomley@HansenPartnership.com>
Cc:     Steffen Maier <maier@linux.ibm.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
        Christoph Hellwig <hch@lst.de>,
        linux-scsi <linux-scsi@vger.kernel.org>
Subject: Re: Linux 5.3-rc1
Message-ID: <20190723161918.GB9140@roeck-us.net>
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On Tue, Jul 23, 2019 at 08:33:15AM -0700, James Bottomley wrote:
[ ... ]
> 
> Yes, I think so.  Can someone try this, or something like it.
> 
> Thanks,
> 
> James
> 
> ---
> 
> diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
> index 9381171c2fc0..4715671a1537 100644
> --- a/drivers/scsi/scsi_lib.c
> +++ b/drivers/scsi/scsi_lib.c
> @@ -1793,7 +1793,8 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
>  	dma_set_seg_boundary(dev, shost->dma_boundary);
>  
>  	blk_queue_max_segment_size(q, shost->max_segment_size);
> -	blk_queue_virt_boundary(q, shost->virt_boundary_mask);
> +	if (shost->virt_boundary_mask)
> +		blk_queue_virt_boundary(q, shost->virt_boundary_mask);
>  	dma_set_max_seg_size(dev, queue_max_segment_size(q));
>  
>  	/*

This fixes the problem for me.

Guenter