linux-kernel - Re: [PATCH] scsi: core: initialize cmd->cmnd before it is used

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Message-ID: <9115c893-3fcd-ae81-7422-723ae5370319@acm.org>
Date:   Tue, 2 Nov 2021 15:27:05 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Tadeusz Struk <tadeusz.struk@...aro.org>, dgilbert@...erlog.com,
        linux-scsi@...r.kernel.org
Cc:     Christoph Hellwig <hch@....de>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        syzbot+5516b30f5401d4dcbcae@...kaller.appspotmail.com
Subject: Re: [PATCH] scsi: core: initialize cmd->cmnd before it is used

On 11/2/21 3:22 PM, Tadeusz Struk wrote:
> Do you want me to send a patch with the check in scsi_fill_sghdr_rq()?
> I want to close the mentioned syzbot issue in 5.10. I can also do the
> back-porting if anything will be required.

Hi Tadeusz,

I think we need two patches: one for the SG_IO code that rejects SG_IO
requests if the CDB length is not valid and a second patch that removes
the code from scsi_lib.c for assigning the CDB length. Please let me
know if you would not have the time to work on this.

Bart.