linux-kernel - RE: [PATCH] scsi: fnic: Replace sgreset tag with max_tag

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Date:   Tue, 29 Aug 2023 02:44:13 +0000
From:   "Karan Tilak Kumar (kartilak)" <kartilak@...co.com>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>
CC:     "Sesidhar Baddela (sebaddel)" <sebaddel@...co.com>,
        "Arulprabhu Ponnusamy (arulponn)" <arulponn@...co.com>,
        "Dhanraj Jhawar (djhawar)" <djhawar@...co.com>,
        "Gian Carlo Boffa (gcboffa)" <gcboffa@...co.com>,
        "Masa Kai (mkai2)" <mkai2@...co.com>,
        "Satish Kharat (satishkh)" <satishkh@...co.com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi: fnic: Replace sgreset tag with max_tag_id

Thanks Martin.

Do I need to send out a patch request to apply this patch to 6.5/scsi-fixes?

Regards,
Karan

-----Original Message-----
From: Martin K. Petersen <martin.petersen@...cle.com> 
Sent: Friday, August 25, 2023 2:16 PM
To: Karan Tilak Kumar (kartilak) <kartilak@...co.com>
Cc: Sesidhar Baddela (sebaddel) <sebaddel@...co.com>; Arulprabhu Ponnusamy (arulponn) <arulponn@...co.com>; Dhanraj Jhawar (djhawar) <djhawar@...co.com>; Gian Carlo Boffa (gcboffa) <gcboffa@...co.com>; Masa Kai (mkai2) <mkai2@...co.com>; Satish Kharat (satishkh) <satishkh@...co.com>; jejb@...ux.ibm.com; martin.petersen@...cle.com; linux-scsi@...r.kernel.org; linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: fnic: Replace sgreset tag with max_tag_id


Karan,

> sgreset is issued with a scsi command pointer. The device reset code 
> assumes that it was issued on a hardware queue, and calls block 
> multiqueue layer. However, the assumption is broken, and there is no 
> hardware queue associated with the sgreset, and this leads to a crash 
> due to a null pointer exception.

Applied to 6.6/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering