linux-kernel - Re: [RFC PATCH] scsi: storvsc: Fix validation for unsolicited incoming packets

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Date:   Wed, 29 Sep 2021 15:55:48 +0200
From:   Andrea Parri <parri.andrea@...il.com>
To:     Haiyang Zhang <haiyangz@...rosoft.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Dexuan Cui <decui@...rosoft.com>
Subject: Re: [RFC PATCH] scsi: storvsc: Fix validation for unsolicited
 incoming packets

> > The patch looks good. But for readability, I'd suggested put the length
> > checks together like this:
> > 
> > 	u32 minlen = rqst_id ? sizeof(struct vstor_packet) -
> > 		stor_device->vmscsi_size_delta : VSTOR_MIN_UNSOL_PKT_SIZE;
> > 
> > 	if (pktlen < minlen) {
> > 		dev_err(&device->device,
> > 			   "Invalid pkt: id=%llu, len=%u, minlen=%u\n",
> > 			   rqst_id, pktlen, minlen);
> > 		continue;
> > 	}
> > 
> > Thanks.
> > 
> > Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> The tag was meant to be:
> Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>

Thank you, Haiyang.  I'll update as suggested.

  Andrea