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Date:   Tue, 23 Jul 2019 17:34:21 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Guenter Roeck <linux@roeck-us.net>
Cc:     Christoph Hellwig <hch@lst.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
        James Bottomley <James.Bottomley@hansenpartnership.com>
Subject: Re: Linux 5.3-rc1
Message-ID: <20190723153421.GA720@lst.de>
References: <CAHk-=wiVjkTqzP6OppBuLQZ+t1mpRQC4T+Ho4Wg2sBAapKd--Q@mail.gmail.com> <20190722222126.GA27291@roeck-us.net> <20190723054841.GA17148@lst.de> <20190723145805.GA5809@roeck-us.net>
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Does this fix the problem for you?

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));
 
 	/*