linux-kernel - Re: [PATCH v2] scsi: fix WARNING in scsi_alloc

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Message-ID: <f628bd28-612c-9be7-e0e5-457113fe65d6@acm.org>
Date:   Fri, 22 Jul 2022 14:09:03 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Jason Yan <yanaijie@...wei.com>, martin.petersen@...cle.com,
        jejb@...ux.vnet.ibm.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        hare@...e.com, hch@....de,
        syzbot+d44b35ecfb807e5af0b5@...kaller.appspotmail.com
Subject: Re: [PATCH v2] scsi: fix WARNING in scsi_alloc_sgtables

On 7/19/22 19:51, 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.

Reviewed-by: Bart Van Assche <bvanassche@....org>