linux-kernel - Re: [syzbot] [usb-storage?] divide error in isd200_ata

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Message-ID: <yq1cysi4obq.fsf@ca-mkp.ca.oracle.com>
Date: Mon, 26 Feb 2024 21:46:39 -0500
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: Alan Stern <stern@...land.harvard.edu>
Cc: Oliver Neukum <oneukum@...e.com>,
        syzbot
 <syzbot+28748250ab47a8f04100@...kaller.appspotmail.com>,
        bvanassche@....org, emilne@...hat.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        martin.petersen@...cle.com, syzkaller-bugs@...glegroups.com,
        tasos@...ossah.com, usb-storage@...ts.one-eyed-alien.net
Subject: Re: [syzbot] [usb-storage?] divide error in isd200_ata_command


Alan,

>> in isd200_scsi_to_ata() because it must not be called before
>> isd200_get_inquiry_data() has completed.
>
> It can't be; isd200_get_inquiry_data is called by
> isd200_Initialization during probe before any SCSI commands are
> transmitted.

How do we end up with bad inquiry data (or rather bad ATA ID data)?

-- 
Martin K. Petersen	Oracle Linux Engineering