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Subject: Re: [PATCH] scsi: fix WARNING in scsi_alloc_sgtables
To:     Bart Van Assche <bvanassche@acm.org>, <martin.petersen@oracle.com>,
        <jejb@linux.vnet.ibm.com>
CC:     <linux-scsi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <hare@suse.com>, <hch@lst.de>,
        <syzbot+d44b35ecfb807e5af0b5@syzkaller.appspotmail.com>
References: <20220719080026.1595874-1-yanaijie@huawei.com>
 <2f0cba61-b98a-9b14-6bb5-700f2b367e3b@acm.org>
From:   Jason Yan <yanaijie@huawei.com>
Message-ID: <88082ab3-0a2b-9175-eb7d-8472d3ff9430@huawei.com>
Date:   Wed, 20 Jul 2022 09:47:03 +0800
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On 2022/7/20 2:08, Bart Van Assche wrote:
> On 7/19/22 01:00, Jason Yan wrote:
>> When iovec_count is non-zero and dxfer_len is zero, the sg_io() just
>> genarated a null bio, and finally caused a warning below. To fix it,
>> skip generating a bio for this request if dxfer_len is zero.
> 
> Since this patch is a bug fix, I think it needs a Fixes: tag.
> 

Thanks Bart. I will dig it out and send v2.

> Thanks,
> 
> Bart.
> .